WO2016052786A1 - Wireless frequency transmitter and receiver supporting multi-frequency band - Google Patents

Wireless frequency transmitter and receiver supporting multi-frequency band Download PDF

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Publication number
WO2016052786A1
WO2016052786A1 PCT/KR2014/009328 KR2014009328W WO2016052786A1 WO 2016052786 A1 WO2016052786 A1 WO 2016052786A1 KR 2014009328 W KR2014009328 W KR 2014009328W WO 2016052786 A1 WO2016052786 A1 WO 2016052786A1
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Prior art keywords
frequency
signal
radio frequency
transmitter
receiver
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PCT/KR2014/009328
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French (fr)
Korean (ko)
Inventor
강상효
황순택
전용훈
이호연
Original Assignee
주식회사 케이엠더블유
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Priority to PCT/KR2014/009328 priority Critical patent/WO2016052786A1/en
Publication of WO2016052786A1 publication Critical patent/WO2016052786A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks

Definitions

  • the present invention relates to radio frequency transmitters and receivers, and more particularly to radio frequency transmitters and receivers that support multiple frequency bands.
  • each communication service method uses multiple frequency bands.
  • CDMA Code Division Multiple Access
  • GSM Global System for Mobile Communication
  • WCDMA Wide band code division multiple access
  • One embodiment of the present invention provides a radio frequency transmitter and a receiver capable of transmitting and receiving multiple frequency bands at the same time.
  • an embodiment of the present invention provides a radio frequency transmitter and receiver that supports multiple frequency bands that can reduce the manufacturing cost.
  • a radio frequency transmitter supporting multiple frequency bands includes: a digital analog signal converter for synthesizing a plurality of intermediate frequency signals to generate a synthesized intermediate frequency signal and outputting the signal through a single path; A mixer configured to receive the synthesized intermediate frequency signal through the single path and generate a synthesized radio frequency signal; And a transmitter configured to receive the synthesized radio frequency signal through the single path, filter each multi-frequency, and output the plurality of radio frequency signals. It may include.
  • the transmitter may include a plurality of transmission band pass filters of a multi band pass filter method.
  • the transmitter may include a plurality of local oscillators for generating LO frequency signals of different frequencies and supplying them to the mixer through a single path.
  • the transmitter may include a frequency combiner for synthesizing the LO frequency signals to generate a synthesized LO frequency signal and outputting the signal through the single path.
  • a frequency combiner for synthesizing the LO frequency signals to generate a synthesized LO frequency signal and outputting the signal through the single path.
  • the transmitter may adjust the separation distance between the plurality of radio frequency signals with the LO frequency signals.
  • a radio frequency receiver supporting multiple frequency bands includes: a receiver receiving a plurality of radio frequency signals, filtering for each of multiple frequencies, generating a synthesized radio frequency signal, and outputting the same through a single path; A mixer configured to receive the synthesized radio frequency signal through the single path and generate a synthesized intermediate frequency signal; And an analog-digital signal converter configured to receive the synthesized intermediate frequency signal through the single path to generate and output a plurality of intermediate frequency signals.
  • the receiver may include a plurality of reception band selection filters of a multiband pass filter method.
  • the receiver may include a plurality of local oscillators for generating LO frequency signals of different frequencies and supplying them to the mixer through a single path.
  • the receiver may include a frequency combiner that synthesizes the LO frequency signals to generate a synthesized LO frequency signal and outputs the signal through the single path.
  • a frequency combiner that synthesizes the LO frequency signals to generate a synthesized LO frequency signal and outputs the signal through the single path.
  • the receiver may adjust the separation distance between the plurality of intermediate frequency signals with the LO frequency signals.
  • a transmitter and a receiver supporting multiple frequency bands are mutually converted between a plurality of intermediate frequency signals and a synthesized intermediate frequency signal generated by combining the plurality of intermediate frequency signals into one signal.
  • a digital analog signal conversion unit capable of converting between the synthesized intermediate frequency signal and the synthesized radio frequency signal;
  • a wireless processor configured to perform mutual conversion between the synthesized radio frequency signal and a plurality of radio frequency signals.
  • the synthesized intermediate frequency signal and the synthesized radio frequency signal may be transmitted through a single path.
  • the wireless processing unit a transmitter including a plurality of transmission band pass filters of the multi-band pass filter method; And a receiver including a plurality of reception band selection filters of the multiband pass filter method.
  • said radio frequency transmitter and receiver may comprise a plurality of local oscillators for generating LO frequency signals of different frequencies and supplying them to said mixer via a single path.
  • the radio frequency transmitter and receiver may include a frequency combiner for synthesizing the LO frequency signals to generate a synthesized LO frequency signal and output the signal through the single path.
  • a frequency combiner for synthesizing the LO frequency signals to generate a synthesized LO frequency signal and output the signal through the single path.
  • the radio frequency transmitter and the receiver may adjust the separation distance between the plurality of intermediate frequency signals or the separation distance between the plurality of intermediate frequency signals with the LO frequency signals.
  • the radio frequency transmitter and receiver supporting the multi frequency band may transmit or receive the multi frequency band signals simultaneously through a simple signal transmission path.
  • a radio frequency transmitter and a receiver supporting multiple frequency bands can reduce manufacturing costs due to a simple signal transmission path.
  • FIG. 1 is an exemplary block diagram of a radio frequency transmitter and receiver supporting a typical multiple frequency band.
  • FIG. 2 is a block diagram of a radio frequency transmitter and receiver supporting multiple frequency bands according to an embodiment of the present invention.
  • FIG. 3 is an exemplary block diagram of a radio frequency transmitter supporting a typical multiple frequency band.
  • FIG. 4 is a block diagram of a radio frequency transmitter supporting multiple frequency bands according to an embodiment of the present invention.
  • FIG. 5 is a block diagram of a radio frequency transmitter supporting multiple frequency bands according to another embodiment of the present invention.
  • FIG. 6 is an exemplary block diagram of a radio frequency receiver supporting a typical multiple frequency band.
  • FIG. 7 is a block diagram of a radio frequency receiver supporting multiple frequency bands according to an embodiment of the present invention.
  • FIG. 8 is a block diagram of a radio frequency receiver supporting multiple frequency bands according to another embodiment of the present invention.
  • a radio frequency transmitter and a receiver 100 supporting a conventional multi-frequency band includes a multi-frequency band processor 1, a digital / analog signal converter 2, a radio signal processor 3, a plurality of It may include an antenna (4).
  • the multi-frequency band processing unit 1 may generate intermediate frequency signals (IF) and transmit the intermediate frequency signals (IF) to the digital / analog signal conversion unit 2 during radio frequency transmission.
  • a digital-to-analog converter (DAC) provided in the digital / analog signal converter 2 generates intermediate frequency signals of a plurality of preset service frequency bands. ) Can be delivered.
  • the multi-frequency band processing unit 1 may receive intermediate frequency signals from the digital / analog signal converter 2 when receiving a radio frequency.
  • intermediate frequency signals of multiple service frequency bands from analog to digital converters (ADC) 22 included in the digital / analog signal converter 2 are provided to each service band. Can be delivered through a delivery path provided by each.
  • ADC analog to digital converters
  • the digital-to-analog signal converter 2 may include a digital-to-analog converter 21 and an analog-to-digital converter 22.
  • the digital-to-analog signal converter 2 may convert a digital signal and an analog signal to each other at the time of radio frequency transmission or reception as needed. Can be.
  • the digital-to-analog converter 21 may convert the digital signals received from the multi-frequency band processing unit 1 into analog signals and transmit the digital signals to the wireless signal processing unit 3 during radio frequency transmission.
  • the digital-to-analog converter 21 converts digital intermediate frequency signals received from the multi-frequency band processor 1 into analog intermediate frequency signals and then includes a plurality of transmitters provided in the wireless signal processor 3.
  • the transmission may be transmitted to each of the transmitters 31: 31a, 31b, ..., 31n corresponding to the corresponding service band from among (31: 31a, 31b, ..., 31n).
  • the analog-to-digital converter 22 may receive analog signals from the radio signal processor 3, convert the analog signals into digital signals, and transmit the analog signals to the multi-frequency band processor 1.
  • the analog-to-digital converter 22 receives an analog received frequency signal from at least one of the plurality of receivers 32: 32a, 32b,..., 32n provided in the wireless signal processor 3.
  • the converted signal may be transferred to the multi-frequency band processing unit 1 after converting the intermediate frequency signals in the digital form.
  • the radio signal processor 3 may perform signal processing such as band pass filtering, up-conversion, down-conversion, gain amplification, and the like, for intermediate frequency signals and transmission frequency signals during a process of transmitting and receiving radio frequency signals.
  • the radio signal processor 3 may include a plurality of transmitters 31: 31 a, 31 b,..., 31 n corresponding to each of the intermediate frequency signals of the multi-service frequency band during radio frequency transmission.
  • the radio signal processor 3 may include a plurality of transmitters 31: 31 a, 31 b,..., 31 n corresponding to each of the intermediate frequency signals of the multi-service frequency band during radio frequency transmission.
  • at least one of the plurality of transmitters 31: 31a, 31b, ..., 31n is a multiple service frequency from the digital analog converter 21 provided in the digital analog signal converter 2.
  • Antennas corresponding to the respective transmission frequency bands of the plurality of antennas (4: 41a, 41b, ..., 41n) are received by receiving the intermediate frequency signals of the band, and performing the above-described signal processing to convert the transmission frequency signals. (4: 41a, 41b, ..., 41n).
  • the radio signal processor 3 may include a plurality of receivers 32: 32a, 32b,..., 32n respectively corresponding to the received frequency signals of the multiple service frequency band when receiving the radio frequency.
  • the radio signal processor 3 may include a plurality of receivers 32: 32a, 32b,..., 32n respectively corresponding to the received frequency signals of the multiple service frequency band when receiving the radio frequency.
  • the plurality of receivers 32: 32a, 32b, ..., 32n is received from one of the plurality of antennas 4: 41a, 41b, ..., 41n.
  • the received frequency signals may be received, converted into intermediate frequency signals by performing the above-described signal processing, and transmitted to the analog-to-digital converter 22 provided in the digital-to-analog signal converter 2.
  • FIGS. 3 and 6 A detailed description of the signal processing process will be given below with reference to FIGS. 3 and 6.
  • the plurality of antennas 4: 41a, 41b, ..., 41n may include one or more antennas 4: 41a, 41b, ..., 41n so as to correspond to the number of bands of the frequencies being serviced, respectively. .
  • the plurality of antennas 4: 41a, 41b,..., 41n may radiate a transmission frequency signal on a radio line in the state of an electromagnetic wave signal during radio frequency transmission.
  • a transmission frequency signal from which a radio signal processing is completed is received from at least one of the plurality of transmitters 31: 31a, 31b,. It can radiate.
  • the plurality of antennas 4: 41a, 41b,..., 41n may receive an electromagnetic wave signal on a wireless line (in the air) and transmit it as an electrical signal on a wire when receiving a radio frequency.
  • the antennas 4: 41a, 41b, ..., 41n when receiving a radio frequency signal, at least one of the antennas 4: 41a, 41b, ..., 41n receives an electromagnetic wave signal (transmission frequency signal) on a radio line, and receives the plurality of received transmission frequency signals.
  • the receiver 32: 32a, 32b, ..., 32n may transmit the signal to the receiver 32: 32a, 32b, ..., 32n connected to the antenna.
  • the radio frequency transmitter and receiver 100 supporting the conventional multi-frequency band described above includes a plurality of transmitters 31: 31a, 31b, ..., 31n corresponding to each service frequency band in order to service the multi-frequency band. It should further include a plurality of receivers 32: 32a, 32b, ..., 32n.
  • each additional frequency band that must be serviced requires the addition of a separate transmitter, receiver, and antenna.
  • the following describes a radio frequency transmitter and receiver supporting multiple frequency bands according to an embodiment of the present invention.
  • FIG. 2 is a block diagram of a radio frequency transmitter and a receiver supporting multiple frequency bands according to an embodiment of the present invention.
  • the radio signal processor 3 of the radio frequency transmitter and receiver 200 supporting multiple frequency bands may include a single transmitter 31 and a single transmitter 32. That is, the components are more concise than the radio signal processor 3 of the radio frequency transmitter and receiver 100 supporting the conventional multi-frequency band of FIG.
  • the wireless signal processor 3 includes a single transmitter including a plurality of band pass filters (BPFs) of a multi band pass filter (MBPF) method. 33) and a single receiver 34 including a plurality of band stop filters (BSFs) of the multi-band pass filter method. That is, since the radio frequency transmitter and receiver 200 supporting the multiple frequency bands according to an embodiment of the present invention may include a concise component, it may be more easily miniaturized and integrated than conventional products.
  • BPFs band pass filters
  • MBPF multi band pass filter
  • the radio frequency transmitter and receiver 200 supporting the multi-frequency band synthesizes the signals transmitted therein for each type and transmits them through a single path in the form of synthesized synthesized signals.
  • Method can be used. That is, the signal transmission path inside the transmitter and the receiver can be reduced by using the single path to the maximum.
  • each component of the radio frequency transmitter and receiver 200 supporting the multi-frequency band is the same as the detailed description of the component of FIG. Detailed description of the components will be omitted.
  • a radio frequency transmitter and a receiver 200 supporting a multi-frequency band may include a multi-frequency band processor 1, a digital / analog signal converter 2, and a radio signal processor ( 3), may include a plurality of antenna (4).
  • the digital / analog signal converter 2 includes a digital-to-analog converter 21 and an analog-to-digital converter 22.
  • the digital-to-analog converter 21 may receive intermediate frequency signals of a service frequency band in a digital format from the multi-frequency band processing unit 1 at the time of radio frequency transmission.
  • the received signals can be converted into intermediate frequency signals of the service frequency band in the analog format.
  • the digital-to-analog converter 21 may generate a synthesized intermediate frequency signal of an analog type, in which intermediate frequencies of multiple service frequency bands are synthesized at the time of radio frequency transmission, and include a single transmitter provided in the wireless signal processor 3. 33) can be delivered via a single path.
  • the analog-to-digital converter 22 may receive a synthesized transmission frequency signal of an analog format synthesized from a single receiver 34 included in the radio signal processing unit 3 through a single path. May be converted into intermediate frequency signals of multiple service frequency bands in a digital format and then transferred to the multiple frequency band processing unit 1.
  • the wireless signal processor 3 performs signal processing such as baseband filtering, up-conversion, down-conversion, and gain amplification for intermediate frequency signals and transmission frequency signals of multiple service bands during transmission and reception of a wireless signal. Can be done.
  • the wireless signal processor 3 includes a single transmitter 33 including a plurality of transmission bandpass filters of a multiband pass filter method and a single receiver 34 including a plurality of reception band selection filters of a multiband pass filter method. It may include.
  • the single transmitter 33 may perform signal processing on intermediate frequency signals of multiple service frequency bands.
  • the analog intermediate frequency signal synthesized from the digital / analog signal converter 2 may be received through a single path, and the received signal may be wirelessly processed. Thereafter, the signal-processed analog format synthesized transmission frequency signal may be transferred to a plurality of band pass filters through a single path.
  • the single receiver 34 may perform a signal processing process on received frequency signals of multiple service frequency bands. For example, a plurality of reception band selection filters receive transmission frequency signals of multiple service frequency bands, and the received signals are generated as synthesized reception frequency signals in a synthesized analog format to a single path to the digital analog signal conversion unit 2. Can be delivered via
  • the plurality of antennas 4: 41a, 41b,..., And 41n may include one or more antennas, which may correspond to the number of bands of frequencies to be serviced, respectively. And radiate or receive radio frequency signals.
  • antennas corresponding to bands that service transmission frequency signals received from a plurality of transmission bandpass filters of a single transmitter 33 are provided. It is possible to radiate transmission frequencies to a wireless line (in air) through (at least one antenna corresponding to a service frequency band of a plurality of antennas).
  • the plurality of antennas (4: 41a, 41b, ..., 41n) When the plurality of antennas (4: 41a, 41b, ..., 41n) receive a radio frequency signal, at least one of the plurality of antennas (4: 41a, 41b, ..., 41n) is a multiple service frequency from the radio line At least one of the transmission frequency signals of the band may be received, and the received radio frequency signals may be converted into electrical signals on a conductive line and transmitted to a plurality of reception band selection filters of a single receiver 34.
  • the multi-service frequency band may be signal processed through the wireless signal processor 3 including the single transmitter 31 and the single receiver 32. Therefore, a separate transmitter and receiver are not required every time a service frequency band is added, and only an antenna that can correspond to the additional service band is added, thereby supporting the additional service frequency band.
  • the transmitter and the receiver are not required to be additionally configured each time the service frequency band is added, it is possible to save the manufacturing cost of the product, the power consumption of the wireless communication system, the cost and time consumed for the maintenance.
  • a radio frequency transmitter 300 supporting a conventional multiple frequency band includes an intermediate frequency filter 302, a local oscillator 303, and a mixer 305 for each multiple frequency band. ), A low noise amplifier (LNA) 306, and a transmission frequency filter 307.
  • LNA low noise amplifier
  • a plurality of intermediate frequency filters 302: 302a, 302b, 302c, 302d for example, to support four different frequency bands, a plurality of intermediate frequency filters 302: 302a, 302b, 302c, 302d, a plurality of local oscillators 303: 303a, 303b, 303c, 303d, and a plurality of mixers ( 305: 305a, 305b
  • the intermediate frequency filter 302 receives an intermediate frequency signal (IF) 301 of a single service frequency band in a preset analog form from the digital-to-analog converter 21, and removes an unwanted wave from the received intermediate frequency signal 301. After filtering to remove spurious, the filtered intermediate frequency signal may be transferred to the mixer 305.
  • IF intermediate frequency signal
  • the local oscillator 303 may supply a Local Frequency (LO) signal 304 to the mixer 305.
  • LO Local Frequency
  • the mixer 305 uses the LO frequency signal 304 supplied from the local oscillator 303 to up-convert the filtered intermediate frequency signal received from the intermediate frequency filter 302 into a signal of a transmission frequency band. )can do.
  • the signal of the upconverted transmission frequency band may be transferred to the low noise amplifier 306.
  • the low noise amplifier 306 may amplify a gain while minimizing noise of a signal of a transmission frequency band received from the mixer 305, and then transfer the gain to the transmission frequency filter 307.
  • the transmission frequency filter 307 receives the amplified transmission frequency signal from the low noise amplifier 306, performs filtering to remove unnecessary frequency components from the received signal, and then performs a radio frequency signal (RF) 308. You can output Unnecessary frequency components removed here are as follows.
  • an image frequency which is a frequency in which the frequency components generated inside the radio frequency transmitter are introduced together during the frequency upconversion in the mixer 305, is generated unnecessarily. Since the transmission frequency filter 307 has a function as an image reject filter, it removes unnecessary image frequencies except for the transmission frequency signal to ensure the stability of the transmission frequency signal.
  • the transmission frequency filter 307 filters out only the transmission frequency band and removes unnecessary signals except for signals in the transmission frequency band.
  • the radio frequency transmitter 300 supporting the conventional multi-frequency band described above, in order to transmit the multi-frequency band, components of the radio frequency transmitter need to be additionally arranged as many as the number of service frequency bands to be transmitted. Therefore, in order to service multiple frequencies based on the above-described configuration of the conventional radio frequency transmitter 300, the manufacturing cost of the product increases due to components added as many as the number of service frequency bands, and the maintenance cost increases after installation. do.
  • a radio frequency transmitter 400 supporting multiple frequency bands according to an embodiment of the present invention includes an intermediate frequency filter 402, a local oscillator 403, a mixer 405, and a low noise amplifier 406. It may include a single transmitter 33 including a plurality of transmission band pass filters (31a, 31b, 31c, 31d) of the multi-band pass filter.
  • the intermediate frequency filter 402 synthesizes an analog form in which intermediate frequencies 401a, 401b, 401c, and 401d of multiple service frequency bands are synthesized from the digital-analog converter 21 provided in the digital-analog signal converter 21.
  • the synthesized intermediate frequency filtered by the mixer 405 after receiving the intermediate frequency signal 401 through a single path and performing filtering to remove spurious from the received synthesized intermediate frequency signal 401 in analog format. Signals can be delivered through a single path.
  • the local oscillator 302 can supply the LO frequency signal 404 to the mixer 405.
  • the mixer 405 up-converts the filtered synthesized intermediate frequency signal received from the intermediate frequency filter 402 to the synthesized transmit frequency signal of the transmission frequency band using the LO frequency signal 404 received from the local oscillator 403. do.
  • the upconverted composite transmit frequency signal may be delivered to the low noise amplifier 406 via a single path.
  • the low noise amplifier 406 may amplify the gain while minimizing the noise of the synthesized transmission frequency signal received from the mixer 405 and then transfer the gain to the single transmitter 31.
  • the single transmitter 33 may include a plurality of transmission band pass filters 31a, 31b, 31c, and 31d corresponding to service bands.
  • the single transmitter 33 receives the synthesized transmission frequency signal amplified from the low noise amplifier 304 through a single path, and transmits the plurality of transmission band pass filters 31a, 31b, 31c to the received synthesis transmission frequency signal.
  • Transmission band pass filters 31a, 31b, 31c, and 31d corresponding to respective service frequency bands of the 31d) may be output through the transmission path after filtering the transmission frequency of the corresponding service frequency band.
  • the plurality of band pass filters 31a, 31b, 31c, and 31d filter by service bands, and transmit the filtered transmission frequencies through a transmission path for each service frequency band to transmit a plurality of antennas (4: 41a, 41b, ..., 41n may be transmitted to the antennas 4: 41a, 41b, ..., 41n corresponding to the respective transmission frequency bands.
  • the radio frequency transmitter 400 supporting the multi-frequency band according to an embodiment of the present invention differs from the conventional radio frequency transmitter 300 described with reference to FIG. There is no need to add components to the radio frequency transmitter. Therefore, the manufacturing cost can be reduced, and the simple configuration that operates using the synthesized signal and the single path can save the power consumption during operation, compared to the conventional products, and reduce the post-installation operation and maintenance costs. have.
  • FIG. 5 is a block diagram of a radio frequency transmitter supporting multiple frequency bands according to another embodiment of the present invention.
  • the radio frequency transmitter 500 supporting the multi-frequency band according to another embodiment of the present invention is a radio frequency transmitter 400 supporting the multi-frequency band according to an embodiment of the present invention described in detail with reference to FIG. Compared with, there are two differences.
  • the radio frequency transmitter 400 supporting the multi-frequency band uses the single local oscillator 403 to finally output radio frequencies 407: 407a, 407b, 407c, and 407d.
  • the radio frequency transmitter 500 supporting the multi-frequency band uses the plurality of local oscillators 403: 403a, 403b, 403c, and 403d to generate different frequencies.
  • the separation distance between (407: 407a, 407b, 407c, and 407d) can be adjusted.
  • each component of the radio frequency transmitter 500 supporting the multi-frequency band is the same as the detailed description of the configuration of FIG. Detailed description thereof will be omitted.
  • a radio frequency transmitter 500 supporting multiple frequency bands includes an intermediate frequency filter 402 and a plurality of local oscillators 403: 403a and 403b generating different frequencies. 403c, 403d, a frequency combiner 408, a mixer 405, a low noise amplifier 406, a multiband pass filter type of a plurality of transmission bandpass filters 31a, 31b, 31c, 31d It may include a transmitter 33.
  • the plurality of local oscillators 403: 403a, 403b, 403c, and 403d respectively generate a plurality of LO frequency signals 404: 404a, 404b, 404c, and 404d having different frequencies, and generate the plurality of LO frequency signals. (404: 404a, 404b, 404c, 404d) may be passed to the frequency combiner (408).
  • the plurality of local oscillators 403: 403a, 403b, 403c, and 403d include four local oscillators to help the understanding of the radio frequency transmitter 500 supporting the multi-frequency band according to another embodiment, but is not limited thereto. And may additionally include a local oscillator as many as the number of intermediate frequencies of the multi-frequency band serving at least two or more maximum. That is, it may include as many local oscillators as the number of frequency bands output from the digital-to-analog converter 21.
  • the frequency combiner 408 receives and transmits a plurality of LO frequency signals 404: 404a, 404b, 404c, and 404d having different frequencies from the plurality of local oscillators 403: 403a, 403b, 403c, and 403d, respectively.
  • the received plurality of LO frequency signals 404: 404a, 404b, 404c, and 404d may be generated as one synthesized LO frequency signal 409.
  • the generated synthesized LO frequency signal 409 may be delivered to the mixer 303 via a single path.
  • the radio frequency transmitter 500 supporting the multiple frequency band according to another embodiment of the present invention described above is compared to the radio frequency signals outputting the radio frequency transmitter 400 supporting the multiple frequency band according to the embodiment.
  • the separation distance between frequencies of (407: 407a, 407b, 407c, and 407d) can be adjusted. Therefore, noise that may occur due to overlap between frequencies of the output radio frequency signals 407: 407a, 407b, 407c, and 407d can be prevented. This may increase the quality of the output radio frequency signals 407: 407a, 407b, 407c, and 407d.
  • the radio frequency transmitter 500 supporting the multi-frequency band according to another embodiment of the present invention transmits the multi-frequency band in the same manner as the radio frequency transmitter 400 supporting the multi-frequency band according to the embodiment There is no need to further arrange the components of the radio frequency transmitter as much as the service frequency band.
  • the following describes a conventional radio frequency receiver supporting a multi-frequency band in order to help the understanding of a radio frequency receiver supporting a multi-frequency band according to an embodiment of the present invention.
  • a radio frequency receiver 600 supporting a conventional multi-frequency band includes a band select filter (BSF) 601, a low noise amplifier (LNA) 602, and image removal.
  • BSF band select filter
  • LNA low noise amplifier
  • IRF Image Reject Filter
  • IRF Local Oscillator
  • Mixer 6
  • IF Amplifier 607
  • CSF Channel Select Filter
  • a plurality of band selection filters (601: 601a, 601b, 601c, 601d), a plurality of low noise amplifiers (602: 602a, 602b, 602c, 602d), and a plurality of image removals Filters 603: 603a, 603b, 603c, 603d, a plurality of local oscillators 604: 604a, 604b, 604c, 604d, a plurality of mixers 606: 606a, 606b, 606c, 606d, a plurality of intermediate frequency amplifiers ( 607: 607a, 607b, 607c, and 607d) and a plurality of channel selection filters 608: 608a, 608b, 608c, and 608d may be included for each frequency band.
  • the antenna 4 may receive an electromagnetic wave signal in the air, convert it into an electrical signal on a conductive wire, and transmit the converted electromagnetic signal to the band selection filter 601.
  • the band selection filter 601 may band pass filter only a desired frequency band from the received signal and then transmit the band pass filter to the low noise amplifier 304.
  • the low noise amplifier 304 may amplify the received reception frequency signal while suppressing amplification to noise and then amplify the received reception frequency signal to the image removal filter 402.
  • the image elimination filter 402 may pass the bandpass filtering once again before being introduced into the mixer 606 to be delivered to the mixer 606. have.
  • the image removal filter 402 may additionally remove the unwanted wave, and may isolate the receiving frequency stage and the intermediate frequency stage, thereby increasing the stability of the radio frequency receiver.
  • the local oscillator 604 may generate and supply the LO frequency signal 605 for frequency synthesis to the mixer 606.
  • the mixer 606 uses the LO frequency signal 605 supplied from the local oscillator 604 to frequency down-convert the received frequency signal received from the image rejection filter 603 into an intermediate frequency signal.
  • the down-converted intermediate frequency signal may be transmitted to the intermediate frequency amplifier 607.
  • the intermediate frequency amplifier 607 may amplify the gain while minimizing the noise of the intermediate frequency signal received from the mixer 606, and then transfer the gain to the channel selection filter 608.
  • the channel selection filter 608 receives the intermediate frequency signal amplified from the intermediate frequency amplifier 607 and filters the intermediate frequency of the desired service frequency band by performing bandpass filtering. In addition, unwanted waves can be removed together.
  • the filtered intermediate frequency signal may be transmitted to the analog-to-digital converter 22.
  • FIG. 7 is a block diagram of a radio frequency receiver supporting multiple frequency bands according to an embodiment of the present invention.
  • a radio frequency receiver 700 supporting multiple frequency bands may include a single receiver 34 including a plurality of reception band selection filters 32a, 32b, 32c, and 32d. have.
  • each component of the radio frequency receiver 700 supporting the multi-frequency band is the same as the detailed description of the component of FIG. Detailed description of the components will be omitted.
  • a radio frequency receiver 700 supporting multiple frequency bands includes a plurality of reception band selection filters 32a, 32b, 32c, and 32d of a multiband pass filter. It may include a single receiver 34, low noise amplifier 702, image rejection filter 703, local oscillator 704, mixer 706, intermediate frequency amplifier 707, channel selection filter 708 including have.
  • the plurality of receiving band selection filters 32a, 32b, 32c, and 32d of the single receiver 34 respectively receive radio frequency signals 407: 407a, 407b, 407c, and 407d received from the antennas 4, respectively. After filtering for each frequency band, the signal may be generated as one synthesized reception frequency signal and transferred to the low noise amplifier 702.
  • the plurality of reception band selection filters 32a, 32b, 32c, and 32d receive a plurality of antennas (4: 41a, 41b, ..., 41n) through a transmission path provided for each service band when receiving radio frequencies. Transmission frequency signals belonging to the multiple service bands may be received from at least one of the following.
  • the received signals are filtered for each service band through a plurality of reception band selection filters 32a, 32b, 32c, and 32d, and are again generated as a synthesized reception frequency of one synthesized multiple service frequency band, thereby providing low noise through a single path. May be passed to amplifier 702.
  • the radio frequency receiver 700 supporting the multi-frequency band according to an embodiment of the present invention differs from the conventional radio frequency receiver 600 described with reference to FIG. 6 as much as the service frequency band to receive the multi-frequency band. There is no need to add components to the radio frequency transmitter. Therefore, the manufacturing cost can be reduced, and the simple configuration that operates using the synthesized signal and the single path can save the power consumption during operation, compared to the conventional products, and reduce the post-installation operation and maintenance costs. have.
  • FIG. 8 is a block diagram of a radio frequency receiver supporting multiple frequency bands according to another embodiment of the present invention.
  • a radio frequency receiver 800 supporting multiple frequency bands according to another embodiment of the present invention is a radio frequency receiver 700 supporting multiple frequency bands according to an embodiment of the present invention described in detail with reference to FIG. Compared with, there are two differences.
  • a plurality of local oscillators 403: 403a, 403b, 403c, and 403d that generate LO frequency signals 404: 404a, 404b, 404c and 404d of different frequencies are used.
  • the radio frequency receiver 700 supporting the multi-frequency band uses the single local oscillator 704 to finally process intermediate frequencies 401: 401a, 401b, 401c, 401d. ) Is equal to the separation distance of radio frequencies 407: 407a, 407b, 407c, and 407d.
  • the radio frequency receiver 800 supporting the multiple frequency band uses a plurality of local oscillators 403: 403a, 403b, 403c, and 403d to generate different frequencies for final processing.
  • the separation distance between the intermediate frequencies 401: 401a, 401b, 401c, and 401d may be adjusted.
  • each component of the radio frequency receiver 800 supporting the multi-frequency band is the same as the detailed description of the component of FIG. Detailed description thereof will be omitted.
  • a radio frequency receiver 800 supporting multiple frequency bands includes a plurality of reception band selection filters 32a, 32b, 32c, and 32d of a multiband pass filter.
  • a mixer 706, an intermediate frequency amplifier 707, and a channel select filter 708 may be included.
  • the plurality of local oscillators 403: 403a, 403b, 403c, and 403d respectively generate a plurality of LO frequency signals 404: 404a, 404b, 404c, and 404d having different frequencies, and generate the plurality of LO frequency signals. (404: 404a, 404b, 404c, 404d) may be passed to the frequency combiner (408).
  • the plurality of local oscillators 403: 403a, 403b, 403c, and 403d include four local oscillators in order to help the understanding of the radio frequency receiver 800 supporting the multiple frequency bands according to the second embodiment.
  • the local oscillator may further include as many as the number of radio frequencies of the multi-frequency band serving at least two or more maximum. That is, it may include as many local oscillators as the number of frequency bands input to the analog-to-digital converter 22.
  • the frequency combiner 408 receives and transmits a plurality of LO frequency signals 404: 404a, 404b, 404c, and 404d having different frequencies from the plurality of local oscillators 403: 403a, 403b, 403c, and 403d, respectively.
  • the received plurality of LO frequency signals 404: 404a, 404b, 404c, and 404d may be generated as one synthesized LO frequency signal 409.
  • the generated synthesized LO frequency signal 409 may be delivered to the mixer 706 via a single path.
  • the radio frequency receiver 800 supporting the multi-frequency band according to another embodiment of the present invention described above is an intermediate frequency signal processed compared to the radio frequency receiver 700 supporting the multi-frequency band according to the embodiment.
  • the separation distance between frequencies of (401: 401a, 401b, 401c, and 401d) can be adjusted. Therefore, it is possible to prevent noise that may occur due to overlap between frequencies of the intermediate frequency signals 401: 401a, 401b, 401c, and 401d that are processed. This can improve the quality of the intermediate frequency signals 401: 401a, 401b, 401c, and 401d that are processed.
  • the radio frequency receiver 800 supporting the multi-frequency band according to another embodiment of the present invention transmits the multi-frequency band in the same manner as the radio frequency receiver 700 supporting the multi-frequency band according to the embodiment. There is no need to further arrange the components of the radio frequency transmitter as much as the service frequency band.
  • each functional unit may mean a functional and structural combination of hardware for performing the technical idea of the present invention and software for driving the hardware.
  • each functional unit may mean a logical unit of a predetermined code and a hardware resource for performing the predetermined code, and does not necessarily mean a physically connected code or a kind of hardware. It can be easily inferred by the average expert in the art.
  • Multi-Frequency Band Processing Unit 2 Digital / Analog Signal Converter
  • wireless signal processor 4 a plurality of antennas
  • intermediate frequency signal 302 intermediate frequency filter
  • mixer 306 low noise amplifier
  • mixer 406 low noise amplifier
  • radio frequency 408 frequency combiner
  • synthesized LO frequency signal 601 band select filter
  • 602 low noise amplifier 603: image rejection filter
  • mixer 606 mixer 607: intermediate frequency amplifier
  • channel selection filter 702 low noise amplifier
  • intermediate frequency amplifier 708 channel select filter

Abstract

The present invention relates to a wireless frequency transmitter and receiver which can comprise: a digital/analog signal converter that can mutually convert a plurality of intermediate frequency signals and a combined intermediate frequency signal which is a signal generated by combining of the plurality of intermediate frequency signals; a mixer that can mutually convert the combined intermediate frequency signal and a combined wireless frequency signal; and a wireless processing unit for mutually converting the combined wireless frequency signal and a plurality of wireless frequency signals.

Description

다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기Radio Frequency Transmitters and Receivers Supporting Multiple Frequency Bands
본 발명은 무선 주파수 송신기 및 수신기에 관한 것으로서, 더욱 자세하게는 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기에 관한 것이다. The present invention relates to radio frequency transmitters and receivers, and more particularly to radio frequency transmitters and receivers that support multiple frequency bands.
통상적으로 이동통신 서비스는 전세계 나라(지역)별로 각각 다른 통신 서비스 방식으로 제공되고 있으며, 각 통신 서비스 방식별로 다중 주파수 대역을 이용하고 있다. 예를 들어 CDMA(Code Division Multiple Access) 방식은 800MHz, 1800MHz의 주파수 대역을 이용하며 GSM(Global System for Mobile communication)방식은 850MHz, 9000MHz의 주파수대역과 1800MHz, 1900MHz의 주파수 대역을 이용하고 있다. WCDMA(Wide band Code Division Multiple Access) 방식은 850MHz, 19000MHz, 2000MHz의 주파수 대역(band)을 이용하고 있다. In general, mobile communication services are provided in different communication services for each country (region) of the world, and each communication service method uses multiple frequency bands. For example, the Code Division Multiple Access (CDMA) method uses a frequency band of 800 MHz and 1800 MHz, and the Global System for Mobile Communication (GSM) method uses a frequency band of 850 MHz and 9000 MHz and a frequency band of 1800 MHz and 1900 MHz. Wide band code division multiple access (WCDMA) scheme uses frequency bands of 850 MHz, 19000 MHz, and 2000 MHz.
한편, 이동통신 서비스 가입자가 여행이나 출장 등으로 인해 통신 서비스가 다른 지역에 가게 되면 가입된 이동통신 서비스를 제공받기에 어려움이 있었다. 이는 이전에 설치된 무선 이동국은 각 이동통신 서비스들 중 서비스받고자 하는 통신 서비스에 대응하는 단일 또는 두 개 정도의 주파수 대역의 신호를 이용하도록 구성되어있었기 때문이다. 따라서 이동통신 가입자들이 세계 각국 어디를 가든지 자신이 가입한 이동통신 서비스를 제공받을 수 있도록 이동국 관련 산업에서 다중 주파수 대역을 지원하는 기술을 개발 중이다. On the other hand, when the mobile communication service subscribers go to other areas due to travel or business trip, it is difficult to receive the subscribed mobile communication service. This is because a previously installed wireless mobile station is configured to use a signal of one or two frequency bands corresponding to a communication service of each mobile communication service. Therefore, the mobile station-related industry is developing a technology that supports multiple frequency bands so that mobile subscribers can receive their mobile communication services wherever they go in the world.
상기 어려움을 해결하고자 종래에는 가변 듀플렉서, 각종 스위치, 스위치를 제어하는 제어부가 포함하여 구성되는 무선 주파수 송신기 및 수신기 개발하여 다중 주파수 대역을 지원하는 기술의 발전이 이루어져 왔다. 하지만, 상기 구성은 스위치 제어를 위한 별도의 제어부가 필요하고, 무선 주파수 송신기 및 수신기에 각각 구비된 스위치를 정밀하게 제어해야 하는 어려움이 있었다. In order to solve the above problems, the development of a radio frequency transmitter and a receiver including a variable duplexer, various switches, and a controller for controlling a switch has been developed. However, the configuration requires a separate control unit for the switch control, there is a difficulty in precisely controlling the switches provided in the radio frequency transmitter and the receiver, respectively.
또한, 안테나에서 무선 주파수 송신기 및 수신기 말단까지 각 서비스 주파수 대역 별로 다른 서비스 주파수 대역 신호 전달 경로와 독립된 신호 전달 경로가 구비되어야 했다. In addition, a signal transmission path independent of another service frequency band signal transmission path for each service frequency band from the antenna to the radio frequency transmitter and the receiver terminal had to be provided.
또한, 각 신호 전달 경로 상에 신호 처리 과정을 담당하는 각종 부품들이 배치 구성되었다. In addition, various components in charge of signal processing are arranged on each signal transmission path.
상기와 같은 구성 때문에 송수신하는 주파수 대역의 개수가 증가 될수록 제품의 제조 단가가 증가하는 어려움이 있었다. Due to the configuration described above, as the number of frequency bands transmitted and received increases, manufacturing cost of the product increases.
또한, 제품 설치 후 장비 운용 중에 고장 발생시 작업자가 유지 보수에 어려움이 있었다. In addition, there was a difficulty in maintaining the operator when a failure occurred during the operation of the equipment after installation of the product.
본 발명의 일 실시 예는 다중 주파수 대역을 동시에 송신 및 수신이 할 수 있는 무선 주파수 송신기 및 수신기를 제공한다.One embodiment of the present invention provides a radio frequency transmitter and a receiver capable of transmitting and receiving multiple frequency bands at the same time.
또한, 본 발명의 일 실시 예는 제조 비용을 절감할 수 있는 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기를 제공한다.In addition, an embodiment of the present invention provides a radio frequency transmitter and receiver that supports multiple frequency bands that can reduce the manufacturing cost.
본 발명의 일 측면에 따르면, 다중 주파수 대역을 지원하는 무선 주파수 송신기는, 복수 개의 중간 주파수 신호들을 합성하여 합성 중간 주파수 신호를 생성하고, 단일 경로를 통해 출력하는 디지털 아날로그 신호 변환기; 상기 합성 중간 주파수 신호를 상기 단일 경로를 통해 전달받아 합성 무선 주파수 신호를 생성하는 믹서; 및 상기 합성 무선 주파수 신호를 상기 단일 경로를 통해 전달받아 다중 주파수 별로 필터링하고, 복수 개의 무선 주파수 신호들로 출력하는 송신기; 를 포함할 수 있다.According to an aspect of the present invention, a radio frequency transmitter supporting multiple frequency bands includes: a digital analog signal converter for synthesizing a plurality of intermediate frequency signals to generate a synthesized intermediate frequency signal and outputting the signal through a single path; A mixer configured to receive the synthesized intermediate frequency signal through the single path and generate a synthesized radio frequency signal; And a transmitter configured to receive the synthesized radio frequency signal through the single path, filter each multi-frequency, and output the plurality of radio frequency signals. It may include.
바람직하게는, 상기 송신기는, 멀티밴드패스필터 방식의 복수 개의 송신용 밴드패스필터들을 포함할 수 있다.Preferably, the transmitter may include a plurality of transmission band pass filters of a multi band pass filter method.
바람직하게는, 상기 송신기는, 서로 다른 주파수의 LO주파수 신호들을 생성하여 상기 믹서로 단일 경로를 통해 공급하는 복수 개의 국부발진기들을 포함할 수 있다.Preferably, the transmitter may include a plurality of local oscillators for generating LO frequency signals of different frequencies and supplying them to the mixer through a single path.
바람직하게는, 상기 송신기는, 상기 LO주파수 신호들을 합성하여 합성 LO주파수 신호를 생성하고, 상기 단일 경로를 통해 출력하는 주파수결합기를 포함할 수 있다.Preferably, the transmitter may include a frequency combiner for synthesizing the LO frequency signals to generate a synthesized LO frequency signal and outputting the signal through the single path.
바람직하게는, 상기 송신기는, 상기 LO주파수 신호들로 상기 복수 개의 무선 주파수 신호들 간의 이격 거리를 조절할 수 있다.Preferably, the transmitter may adjust the separation distance between the plurality of radio frequency signals with the LO frequency signals.
본 발명의 다른 측면에 따르면, 다중 주파수 대역을 지원하는 무선 주파수 수신기는, 복수 개의 무선 주파수 신호들을 전달받아 다중 주파수 별로 필터링하고, 합성 무선 주파수 신호로 생성하여 단일 경로를 통해 출력하는 수신기; 상기 합성 무선 주파수 신호를 상기 단일 경로를 통해 전달받아 합성 중간 주파수 신호를 생성하는 믹서; 및 상기 합성 중간 주파수 신호를 상기 단일 경로를 통해 전달받아 복수 개의 중간 주파수 신호들을 생성하고, 출력하는 아날로그 디지털 신호 변환기를 포함할 수 있다.According to another aspect of the present invention, a radio frequency receiver supporting multiple frequency bands includes: a receiver receiving a plurality of radio frequency signals, filtering for each of multiple frequencies, generating a synthesized radio frequency signal, and outputting the same through a single path; A mixer configured to receive the synthesized radio frequency signal through the single path and generate a synthesized intermediate frequency signal; And an analog-digital signal converter configured to receive the synthesized intermediate frequency signal through the single path to generate and output a plurality of intermediate frequency signals.
바람직하게는, 상기 수신기는, 멀티밴드패스필터 방식의 복수 개의 수신용 밴드선택필터들을 포함할 수 있다.Preferably, the receiver may include a plurality of reception band selection filters of a multiband pass filter method.
바람직하게는, 상기 수신기는, 서로 다른 주파수의 LO주파수 신호들을 생성하여 상기 믹서로 단일 경로를 통해 공급하는 복수 개의 국부발진기들을 포함할 수 있다.Preferably, the receiver may include a plurality of local oscillators for generating LO frequency signals of different frequencies and supplying them to the mixer through a single path.
바람직하게는, 상기 수신기는, 상기 LO주파수 신호들을 합성하여 합성 LO주파수 신호를 생성하고, 상기 단일 경로를 통해 출력하는 주파수결합기를 포함할 수 있다.Preferably, the receiver may include a frequency combiner that synthesizes the LO frequency signals to generate a synthesized LO frequency signal and outputs the signal through the single path.
바람직하게는, 상기 수신기는, 상기 LO주파수 신호들로 상기 복수 개의 중간 주파수 신호들 간의 이격 거리를 조절할 수 있다.Preferably, the receiver may adjust the separation distance between the plurality of intermediate frequency signals with the LO frequency signals.
본 발명의 또 다른 측면에 따르면, 다중 주파수 대역을 지원하는 송신기 및 수신기는, 복수 개의 중간 주파수 신호들과 상기 복수 개의 중간 주파수 신호들이 하나의 신호로 합성되어 생성된 합성 중간 주파수 신호 간의 상호 변환할 수 있는 디지털 아날로그 신호 변환부; 상기 합성 중간 주파수 신호와 합성 무선 주파수 신호 간의 상호 변환할 수 있는 믹서; 및 상기 합성 무선 주파수 신호와 복수 개의 무선 주파수 신호들 간의 상호 변환을 수행하는 무선 처리부를 포함할 수 있다.According to another aspect of the present invention, a transmitter and a receiver supporting multiple frequency bands are mutually converted between a plurality of intermediate frequency signals and a synthesized intermediate frequency signal generated by combining the plurality of intermediate frequency signals into one signal. A digital analog signal conversion unit; A mixer capable of converting between the synthesized intermediate frequency signal and the synthesized radio frequency signal; And a wireless processor configured to perform mutual conversion between the synthesized radio frequency signal and a plurality of radio frequency signals.
바람직하게는, 상기 합성 중간 주파수 신호와 상기 합성 무선 주파수 신호는 단일 경로를 통해 전달할 수 있다.Preferably, the synthesized intermediate frequency signal and the synthesized radio frequency signal may be transmitted through a single path.
바람직하게는, 상기 무선 처리부는, 멀티밴드패스필터 방식의 복수 개의 송신용 밴드패스필터들을 포함하는 송신기; 및 멀티밴드패스필터 방식의 복수 개의 수신용 밴드선택필터들을 포함하는 수신기를 포함할 수 있다.Preferably, the wireless processing unit, a transmitter including a plurality of transmission band pass filters of the multi-band pass filter method; And a receiver including a plurality of reception band selection filters of the multiband pass filter method.
바람직하게는, 상기 무선 주파수 송신기 및 수신기는, 서로 다른 주파수의 LO주파수 신호들을 생성하여 상기 믹서로 단일 경로를 통해 공급하는 복수 개의 국부발진기들을 포함할 수 있다.Advantageously, said radio frequency transmitter and receiver may comprise a plurality of local oscillators for generating LO frequency signals of different frequencies and supplying them to said mixer via a single path.
바람직하게는, 상기 무선 주파수 송신기 및 수신기는, 상기 LO주파수 신호들을 합성하여 합성 LO주파수 신호를 생성하고, 상기 단일 경로를 통해 출력하는 주파수결합기를 포함할 수 있다.Preferably, the radio frequency transmitter and receiver may include a frequency combiner for synthesizing the LO frequency signals to generate a synthesized LO frequency signal and output the signal through the single path.
바람직하게는, 무선 주파수 송신기 및 수신기는, 상기 LO주파수 신호들로 상기 복수 개의 중간 주파수 신호들 간의 이격 거리 또는 상기 복수 개의 중간 주파수 신호들 간의 이격 거리를 조절할 수 있다. Preferably, the radio frequency transmitter and the receiver may adjust the separation distance between the plurality of intermediate frequency signals or the separation distance between the plurality of intermediate frequency signals with the LO frequency signals.
상술한 바와 같이, 본 발명의 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기는 단순한 신호 전달 경로를 통해 동시에 다중 주파수 대역 신호들을 송신 또는 수신할 수 있다. As described above, the radio frequency transmitter and receiver supporting the multi frequency band according to the embodiment of the present invention may transmit or receive the multi frequency band signals simultaneously through a simple signal transmission path.
또한, 본 발명의 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기는 단순한 신호 전달 경로로 인해 제조 비용을 절감할 수 있다. In addition, a radio frequency transmitter and a receiver supporting multiple frequency bands according to an embodiment of the present invention can reduce manufacturing costs due to a simple signal transmission path.
또한, 본 발명의 실시 예에 따른 상기 단순한 신호 전달 경로로 인해 설치 후, 유지 보수 시 소요되는 비용 및 시간을 줄일 수 있다. In addition, due to the simple signal transmission path according to an embodiment of the present invention, after installation, cost and time required for maintenance can be reduced.
도 1은 통상적인 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기의 일 예시 블록도. 1 is an exemplary block diagram of a radio frequency transmitter and receiver supporting a typical multiple frequency band.
도 2는 본 발명의 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기의 블록도. 2 is a block diagram of a radio frequency transmitter and receiver supporting multiple frequency bands according to an embodiment of the present invention.
도 3은 통상적인 다중 주파수 대역을 지원하는 무선 주파수 송신기의 일 예시 블록도. 3 is an exemplary block diagram of a radio frequency transmitter supporting a typical multiple frequency band.
도 4는 본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기의 블록도. 4 is a block diagram of a radio frequency transmitter supporting multiple frequency bands according to an embodiment of the present invention.
도 5는 본 발명의 다른 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기의 블록도. 5 is a block diagram of a radio frequency transmitter supporting multiple frequency bands according to another embodiment of the present invention.
도 6은 통상적인 다중 주파수 대역을 지원하는 무선 주파수 수신기의 일 예시 블록도. 6 is an exemplary block diagram of a radio frequency receiver supporting a typical multiple frequency band.
도 7은 본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기의 블록도. 7 is a block diagram of a radio frequency receiver supporting multiple frequency bands according to an embodiment of the present invention.
도 8은 본 발명의 다른 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기의 블록도. 8 is a block diagram of a radio frequency receiver supporting multiple frequency bands according to another embodiment of the present invention.
후술하는 본 발명에 대한 상세한 설명은, 본 발명이 실시될 수 있는 특정 실시 예를 예시로서 도시하는 첨부 도면을 참조한다. 이들 실시 예는 당업자가 본 발명을 실시할 수 있기에 충분하도록 상세히 설명된다. 본 발명의 다양한 실시 예는 서로 다르지만 상호 배타적일 필요는 없음이 이해되어야 한다. 예를 들어, 여기에 기재되어 있는 특정 형상, 구조 및 특성은 일 실시 예에 관련하여 본 발명의 사상 및 범위를 벗어나지 않으면서 다른 실시 예로 구현될 수 있다. 또한, 각각의 개시된 실시 예 내의 개별 구성요소의 위치 또는 배치는 본 발명의 사상 및 범위를 벗어나지 않으면서 변경될 수 있음이 이해되어야 한다. 따라서, 후술하는 상세한 설명은 한정적인 의미로서 취하려는 것이 아니며, 본 발명의 범위는 적절하게 설명된다면 그 청구항들이 주장하는 것과 균등한 모든 범위와 더불어 첨부된 청구항에 의해서만 한정된다. 도면에서 유사한 참조부호는 여러 측면에 걸쳐서 동일하거나 유사한 기능을 지칭한다. DETAILED DESCRIPTION OF THE INVENTION The following detailed description of the invention refers to the accompanying drawings that show, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It is to be understood that the various embodiments of the invention are different, but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention with respect to one embodiment. In addition, it is to be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. Accordingly, the following detailed description is not to be taken in a limiting sense, and the scope of the present invention is defined only by the appended claims, along with the full range of equivalents to which such claims are entitled. Like reference numerals in the drawings refer to the same or similar functions throughout the several aspects.
이하, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 본 발명을 용이하게 실시할 수 있도록 하기 위하여, 본 발명의 바람직한 실시 예들에 관하여 첨부된 도면을 참조하여 상세히 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.
먼저, 본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기의 이해를 돕기 위하여 통상적인 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기에 대하여 설명한다. First, to help the understanding of a radio frequency transmitter and a receiver supporting a multi-frequency band according to an embodiment of the present invention, a radio frequency transmitter and a receiver supporting a conventional multi-frequency band will be described.
도 1은 통상적인 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기의 일 예시 블록도이다. 도 1을 참조하면, 통상적인 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기(100)는 다중 주파수 대역 처리부(1), 디지털/아날로그 신호 변환부(2), 무선 신호 처리부(3), 복수 개의 안테나(4)를 포함할 수 있다.1 is an exemplary block diagram of a radio frequency transmitter and receiver supporting a typical multiple frequency band. Referring to FIG. 1, a radio frequency transmitter and a receiver 100 supporting a conventional multi-frequency band includes a multi-frequency band processor 1, a digital / analog signal converter 2, a radio signal processor 3, a plurality of It may include an antenna (4).
다중 주파수 대역 처리부(1)는 무선 주파수 송신 시, 중간 주파수 신호(IF: Intermediate Frequency) 들을 생성하여 디지털/아날로그 신호 변환부(2)로 전달할 수 있다. 예를 들어, 무선 주파수 신호 송신 시, 미리 설정된 다중의 서비스 주파수 대역의 중간 주파수 신호들을 발생시켜 디지털/아날로그 신호 변환부(2)에 구비된 디지털-아날로그 변환기(DAC: Digtal to Analog Convertor)(21)로 전달할 수 있다.The multi-frequency band processing unit 1 may generate intermediate frequency signals (IF) and transmit the intermediate frequency signals (IF) to the digital / analog signal conversion unit 2 during radio frequency transmission. For example, when transmitting a radio frequency signal, a digital-to-analog converter (DAC) provided in the digital / analog signal converter 2 generates intermediate frequency signals of a plurality of preset service frequency bands. ) Can be delivered.
또한, 다중 주파수 대역 처리부(1)는 무선 주파수 수신 시, 디지털/아날로그 신호 변환부(2)로부터 중간 주파수 신호들을 전달받을 수 있다. 예를 들어, 무선 주파수 수신 시, 디지털/아날로그 신호 변환부(2)에 구비된 아날로그-디지털 변환기(ADC: Analog to Digtal Convertor)(22)로부터 다중의 서비스 주파수 대역의 중간 주파수 신호들을 각 서비스 대역별로 구비된 전달 경로를 통해 전달받을 수 있다.In addition, the multi-frequency band processing unit 1 may receive intermediate frequency signals from the digital / analog signal converter 2 when receiving a radio frequency. For example, when receiving a radio frequency, intermediate frequency signals of multiple service frequency bands from analog to digital converters (ADC) 22 included in the digital / analog signal converter 2 are provided to each service band. Can be delivered through a delivery path provided by each.
디지털/아날로그 신호 변환부(2)는 디지털-아날로그 변환기(21)와 아날로그-디지털 변환기(22)를 포함할 수 있으며, 무선 주파수 송신 시 또는 수신 시 디지털 신호와 아날로그 신호를 필요에 따라서 상호 변환할 수 있다.The digital-to-analog signal converter 2 may include a digital-to-analog converter 21 and an analog-to-digital converter 22. The digital-to-analog signal converter 2 may convert a digital signal and an analog signal to each other at the time of radio frequency transmission or reception as needed. Can be.
디지털-아날로그 변환기(21)는 무선 주파수 송신 시, 다중 주파수 대역 처리부(1)에서 전달받은 디지털 신호들을 아날로그 신호들로 변환하고 무선 신호 처리부(3)로 전달할 수 있다. 예를 들어 디지털-아날로그 변환기(21)는 다중 주파수 대역 처리부(1)로부터 전달받은 디지털 형태의 중간 주파수 신호들을 아날로그 형태의 중간 주파수 신호들로 변환 후 무선 신호 처리부(3)에 구비된 복수 개의 송신기(31: 31a, 31b, ... , 31n) 중 해당 서비스 대역에 대응하는 각각의 송신기(31:31a,31b,...,31n)로 전달할 수 있다.The digital-to-analog converter 21 may convert the digital signals received from the multi-frequency band processing unit 1 into analog signals and transmit the digital signals to the wireless signal processing unit 3 during radio frequency transmission. For example, the digital-to-analog converter 21 converts digital intermediate frequency signals received from the multi-frequency band processor 1 into analog intermediate frequency signals and then includes a plurality of transmitters provided in the wireless signal processor 3. The transmission may be transmitted to each of the transmitters 31: 31a, 31b, ..., 31n corresponding to the corresponding service band from among (31: 31a, 31b, ..., 31n).
아날로그-디지털 변환기(22)는 무선 주파수 수신 시, 무선 신호 처리부(3)로부터 아날로그 신호들을 전달받아 디지털 신호들로 변환하고 다중 주파수 대역 처리부(1)로 전달할 수 있다. 예를 들어 아날로그-디지털 변환기(22)는 무선 신호 처리부(3)에 구비된 복수 개의 수신기(32:32a,32b,...,32n) 중 적어도 어느 하나로부터 아날로그 형태의 수신 주파수 신호를 전달받고, 전달받은 신호를 디지털 형태의 중간 주파수 신호들 변환 후 다중 주파수 대역 처리부(1)로 전달할 수 있다. When receiving the radio frequency, the analog-to-digital converter 22 may receive analog signals from the radio signal processor 3, convert the analog signals into digital signals, and transmit the analog signals to the multi-frequency band processor 1. For example, the analog-to-digital converter 22 receives an analog received frequency signal from at least one of the plurality of receivers 32: 32a, 32b,..., 32n provided in the wireless signal processor 3. The converted signal may be transferred to the multi-frequency band processing unit 1 after converting the intermediate frequency signals in the digital form.
무선 신호 처리부(3)는 무선 주파수 신호를 송수신하는 과정 중 중간 주파수 신호들 및 송신 주파수 신호들을 대상으로 대역통과 필터링, 상향 변환, 하향 변환, 이득 증폭 등의 신호 처리 과정을 실시할 수 있다.The radio signal processor 3 may perform signal processing such as band pass filtering, up-conversion, down-conversion, gain amplification, and the like, for intermediate frequency signals and transmission frequency signals during a process of transmitting and receiving radio frequency signals.
또한, 무선 신호 처리부(3)는 무선 주파수 송신 시, 다중 서비스 주파수 대역의 중간 주파수 신호 별로 각각 대응되는 복수 개의 송신기(31:31a,31b,...,31n)를 포함할 수 있다. 예를 들어 무선 주파수 송신시, 복수 개의 송신기(31:31a,31b,...,31n) 중 적어도 어느 하나는 디지털 아날로그 신호 변환부(2)에 구비된 디지털 아날로그 변환기(21)로부터 다중 서비스 주파수 대역의 중간 주파수 신호들을 전달받고, 상기 설명된 신호 처리 과정을 실시하여 송신 주파수 신호들로 변환하여 복수 개의 안테나(4:41a,41b,...,41n) 중 각 송신 주파수 대역에 대응되는 안테나(4:41a,41b,...,41n)로 전달할 수 있다.In addition, the radio signal processor 3 may include a plurality of transmitters 31: 31 a, 31 b,..., 31 n corresponding to each of the intermediate frequency signals of the multi-service frequency band during radio frequency transmission. For example, at the time of radio frequency transmission, at least one of the plurality of transmitters 31: 31a, 31b, ..., 31n is a multiple service frequency from the digital analog converter 21 provided in the digital analog signal converter 2. Antennas corresponding to the respective transmission frequency bands of the plurality of antennas (4: 41a, 41b, ..., 41n) are received by receiving the intermediate frequency signals of the band, and performing the above-described signal processing to convert the transmission frequency signals. (4: 41a, 41b, ..., 41n).
또한, 무선 신호 처리부(3)는 무선 주파수 수신 시, 다중 서비스 주파수 대역의 수신 주파수 신호 별로 각각 대응되는 복수 개의 수신기(32:32a,32b,...,32n)를 포함할 수 있다. 예를 들어 무선 주파수 수신 시, 복수 개의 수신기(32:32a,32b,...,32n) 중 적어도 어느 하나는 복수 개의 안테나(4:41a,41b,...,41n) 중 어느 하나로부터 수신된 수신 주파수 신호들을 전달받고, 상기 설명된 신호 처리 과정을 실시하여 중간 주파수 신호들로 변환하여 디지털 아날로그 신호 변환부(2)에 구비된 아날로그 디지털 변환기(22)로 전달할 수 있다. 상기 신호 처리 과정에 대한 자세한 설명은 하기에서 도 3 및 도 6을 참조하여 자세히 설명하기로 한다.In addition, the radio signal processor 3 may include a plurality of receivers 32: 32a, 32b,..., 32n respectively corresponding to the received frequency signals of the multiple service frequency band when receiving the radio frequency. For example, at the time of radio frequency reception, at least one of the plurality of receivers 32: 32a, 32b, ..., 32n is received from one of the plurality of antennas 4: 41a, 41b, ..., 41n. The received frequency signals may be received, converted into intermediate frequency signals by performing the above-described signal processing, and transmitted to the analog-to-digital converter 22 provided in the digital-to-analog signal converter 2. A detailed description of the signal processing process will be given below with reference to FIGS. 3 and 6.
복수 개의 안테나(4:41a,41b,...,41n)는 서비스하는 주파수의 대역 수에 따라 각각 대응할 수 있도록 하나 이상의 안테나(4:41a,41b,...,41n)를 포함할 수 있다.The plurality of antennas 4: 41a, 41b, ..., 41n may include one or more antennas 4: 41a, 41b, ..., 41n so as to correspond to the number of bands of the frequencies being serviced, respectively. .
또한, 복수 개의 안테나(4:41a,41b,...,41n)는 무선 주파수 송신 시, 송신 주파수 신호를 전자기파 신호 상태로 무선 선로 상에 방사할 수 있다. 예를 들어 무선 주파수 신호 송신 시, 복수 개의 송신기(31:31a,31b,...,31n) 중 적어도 어느 하나로부터 무선 신호 처리 과정이 완료된 송신 주파수 신호를 전달받아 전자기파 신호 상태로 무선 선로 상에  방사할 수 있다.In addition, the plurality of antennas 4: 41a, 41b,..., 41n may radiate a transmission frequency signal on a radio line in the state of an electromagnetic wave signal during radio frequency transmission. For example, when transmitting a radio frequency signal, a transmission frequency signal from which a radio signal processing is completed is received from at least one of the plurality of transmitters 31: 31a, 31b,. It can radiate.
또한, 복수 개의 안테나(4:41a,41b,...,41n)는 무선 주파수 수신 시, 무선 선로(공기 중) 상의 전자기파(electronmagnetic wave) 신호를 수신하여 도선 상의 전기적 신호로 전달할 수 있다. 예를 들어 무선 주파수 신호 수신 시, 안테나(4:41a,41b,...,41n) 중 적어도 어느 하나는 무선 선로 상의 전자기파 신호(송신 주파수 신호)를 수신하고, 수신된 송신 주파수 신호들을 복수 개의 수신기(32:32a,32b,...,32n) 중 해당 신호를 수신한 안테나와 도선 상으로 연결되어있는 수신기(32:32a,32b,...,32n)로 전달할 수 있다.In addition, the plurality of antennas 4: 41a, 41b,..., 41n may receive an electromagnetic wave signal on a wireless line (in the air) and transmit it as an electrical signal on a wire when receiving a radio frequency. For example, when receiving a radio frequency signal, at least one of the antennas 4: 41a, 41b, ..., 41n receives an electromagnetic wave signal (transmission frequency signal) on a radio line, and receives the plurality of received transmission frequency signals. The receiver 32: 32a, 32b, ..., 32n may transmit the signal to the receiver 32: 32a, 32b, ..., 32n connected to the antenna.
상기 설명된 통상적인 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기(100)는 다중 주파수 대역을 서비스하기 위해서는 서비스 주파수 대역 당 대응 되는 복수 개의 송신기(31:31a,31b,...,31n)와 복수 개의 수신기(32:32a,32b,...,32n)들을 추가로 포함해야 한다. The radio frequency transmitter and receiver 100 supporting the conventional multi-frequency band described above includes a plurality of transmitters 31: 31a, 31b, ..., 31n corresponding to each service frequency band in order to service the multi-frequency band. It should further include a plurality of receivers 32: 32a, 32b, ..., 32n.
또한, 서비스해야 하는 주파수 대역을 추가할 때마다 별도의 송신기, 수신기 및 안테나를 함께 추가해야 한다. In addition, each additional frequency band that must be serviced requires the addition of a separate transmitter, receiver, and antenna.
또한, 서비스 주파수 대역이 추가될 때마다 별도로 추가 구성되는 송신기 및 수신기로 인해 제품의 제조비용, 무선 통신 시스템의 전력 소모량, 유지 보수에 소모되는 비용과 시간이 증가하게 되는 어려움이 있다. In addition, there is a difficulty in increasing the manufacturing cost of the product, the power consumption of the wireless communication system, the cost and time consumed by the maintenance due to the transmitter and the receiver are additionally configured each time the service frequency band is added.
다음은 본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기에 대하여 설명한다.The following describes a radio frequency transmitter and receiver supporting multiple frequency bands according to an embodiment of the present invention.
도 2는 본 발명의 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기의 블록도이다. 2 is a block diagram of a radio frequency transmitter and a receiver supporting multiple frequency bands according to an embodiment of the present invention.
본 발명의 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기(200)를 상기 도 1을 참조하여 자세히 설명된 통상적인 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기(100)와 비교하면 다음과 같은 세 가지 점이 상이하다. Comparing the radio frequency transmitter and receiver 200 supporting the multiple frequency band according to an embodiment of the present invention with the radio frequency transmitter and receiver 100 supporting the conventional multi-frequency band described in detail with reference to FIG. There are three differences.
첫째, 본 발명의 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기(200)의 무선 신호 처리부(3)는 단일 송신기(31)와 단일 송신기(32)를 포함할 수 있다. 즉, 상기 도 1의 통상적인 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기(100)의 무선 신호 처리부(3)에 비해 구성부가 간결하다.First, the radio signal processor 3 of the radio frequency transmitter and receiver 200 supporting multiple frequency bands according to an embodiment of the present invention may include a single transmitter 31 and a single transmitter 32. That is, the components are more concise than the radio signal processor 3 of the radio frequency transmitter and receiver 100 supporting the conventional multi-frequency band of FIG.
둘째, 상기 구성부를 간결하게 하기 위해 무선 신호 처리부(3)는 멀티밴드패스필터(MBPF: Multi Band Pass Filter)방식의 복수 개의 송신용 밴드패스필터(BPF: Band Pass Filter) 들을 포함하는 단일 송신기(33)와 멀티밴드패스필터 방식의 복수 개의 수신용 밴드선택필터(BSF:Band Stop Filter, Band Select Filter)들을 포함 하는 단일 수신기(34)를 포함할 수 있다. 즉, 본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기(200)는 간결한 구성부를 포함할 수 있으므로, 종래의 제품들보다 용이하게 소형화 및 집적화할 수 있다. Second, in order to simplify the component, the wireless signal processor 3 includes a single transmitter including a plurality of band pass filters (BPFs) of a multi band pass filter (MBPF) method. 33) and a single receiver 34 including a plurality of band stop filters (BSFs) of the multi-band pass filter method. That is, since the radio frequency transmitter and receiver 200 supporting the multiple frequency bands according to an embodiment of the present invention may include a concise component, it may be more easily miniaturized and integrated than conventional products.
셋째, 본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기(200)는 내부에서 전달되는 신호들을 각각 종류별로 합성한 후, 합성된 합성 신호 형태로 단일 경로를 통해 전달시키는 방법을 사용할 수 있다. 즉, 상기 단일 경로를 최대한 사용하여 송신기 및 수신기 내부의 신호 전달 경로를 줄 일 수 있다.Third, the radio frequency transmitter and receiver 200 supporting the multi-frequency band according to an embodiment of the present invention synthesizes the signals transmitted therein for each type and transmits them through a single path in the form of synthesized synthesized signals. Method can be used. That is, the signal transmission path inside the transmitter and the receiver can be reduced by using the single path to the maximum.
이하 본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기(200)의 각 구성부의 상세한 설명은 상기 설명된 세 가지를 제외하고 상기 도 1의 구성부의 상세한 설명과 동일하므로 동일한 구성부에 대한 상세한 설명은 생략한다. Hereinafter, the detailed description of each component of the radio frequency transmitter and receiver 200 supporting the multi-frequency band according to an embodiment of the present invention is the same as the detailed description of the component of FIG. Detailed description of the components will be omitted.
도 2를 참조하면, 본 발명의 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기(200)는 다중 주파수 대역 처리부(1), 디지털/아날로그 신호 변환부(2), 무선 신호 처리부(3), 복수 개의 안테나(4)를 포함할 수 있다.2, a radio frequency transmitter and a receiver 200 supporting a multi-frequency band according to an embodiment of the present invention may include a multi-frequency band processor 1, a digital / analog signal converter 2, and a radio signal processor ( 3), may include a plurality of antenna (4).
하기에는 합성된 주파수 신호들이 입/출력되는 디지털/아날로그 신호 변환부(2), 단일 송신기(33)와 단일 수신기(34)로 포함하는 무선 신호 처리부(3)에 대하여 자세히 설명한다. Hereinafter, the digital / analog signal conversion unit 2 into which the synthesized frequency signals are input / output, and the wireless signal processing unit 3 including the single transmitter 33 and the single receiver 34 will be described in detail.
디지털/아날로그 신호 변환부(2)는 디지털-아날로그 변환기(21)와 아날로그-디지털 변환기(22)를 포함한다. The digital / analog signal converter 2 includes a digital-to-analog converter 21 and an analog-to-digital converter 22.
디지털-아날로그 변환기(21)는 무선 주파수 송신 시, 다중 주파수 대역 처리부(1)로부터 디지털 형식의 서비스 주파수 대역의 중간 주파수 신호들을 전달받을 수 있다. 전달받은 신호들을 아날로그 형식의 서비스 주파수 대역의 중간 주파수 신호들로 변환할 수 있다.The digital-to-analog converter 21 may receive intermediate frequency signals of a service frequency band in a digital format from the multi-frequency band processing unit 1 at the time of radio frequency transmission. The received signals can be converted into intermediate frequency signals of the service frequency band in the analog format.
또한, 디지털-아날로그 변환기(21)는 무선 주파수 송신 시, 다중 서비스 주파수 대역의 중간 주파수들이 합성된 아날로그 형식의 합성 중간 주파수 신호를 생성할 수 있으며, 무선 신호 처리부(3)에 구비된 단일 송신기(33)로 단일 경로를 통해 전달할 수 있다. In addition, the digital-to-analog converter 21 may generate a synthesized intermediate frequency signal of an analog type, in which intermediate frequencies of multiple service frequency bands are synthesized at the time of radio frequency transmission, and include a single transmitter provided in the wireless signal processor 3. 33) can be delivered via a single path.
아날로그-디지털 변환기(22)는 무선 주파수 수신 시, 무선 신호 처리부(3)에 구비된 단일 수신기(34)로부터 합성된 아날로그 형식의 합성 송신 주파수 신호를 단일 경로를 통해 전달받을 수 있으며, 전달받은 신호를 디지털 형식의 다중의 서비스 주파수 대역의 중간 주파수 신호들로 변환한 후 다중 주파수 대역 처리부(1)로 전달할 수 있다. When receiving the radio frequency, the analog-to-digital converter 22 may receive a synthesized transmission frequency signal of an analog format synthesized from a single receiver 34 included in the radio signal processing unit 3 through a single path. May be converted into intermediate frequency signals of multiple service frequency bands in a digital format and then transferred to the multiple frequency band processing unit 1.
무선 신호 처리부(3)는 무선 신호를 송신 및 수신하는 과정 중에서 다중 서비스 대역의 중간 주파수 신호들과 송신 주파수 신호들을 대상으로 기저대역통과 필터링, 상향 변환, 하향 변환, 이득 증폭 등의 신호 처리 과정을 수행할 수 있다. The wireless signal processor 3 performs signal processing such as baseband filtering, up-conversion, down-conversion, and gain amplification for intermediate frequency signals and transmission frequency signals of multiple service bands during transmission and reception of a wireless signal. Can be done.
무선 신호 처리부(3)는 멀티밴드패스필터 방식의 복수 개의 송신용 밴드패스필터들을 포함하는 단일 송신기(33)와 멀티밴드패스필터 방식의 복수 개의 수신용 밴드선택필터들을 포함하는 단일 수신기(34)를 포함할 수 있다.The wireless signal processor 3 includes a single transmitter 33 including a plurality of transmission bandpass filters of a multiband pass filter method and a single receiver 34 including a plurality of reception band selection filters of a multiband pass filter method. It may include.
단일 송신기(33)는 무선 주파수 송신 시, 다중 서비스 주파수 대역의 중간 주파수 신호들을 대상으로 신호 처리과정을 실시할 수 있다. 예를 들어 디지털/아날로그 신호 변환부(2)로부터 합성된 아날로그 형식의 합성 중간 주파수 신호를 단일 경로를 통해 전달받고, 전달받은 신호를 무선 신호 처리할 수 있다. 그 후, 상기 신호 처리된 아날로그 형식의 합성 송신 주파수 신호를 단일 경로를 통해 복수 개의 밴드패스필터들로 전달할 수 있다. When transmitting a radio frequency, the single transmitter 33 may perform signal processing on intermediate frequency signals of multiple service frequency bands. For example, the analog intermediate frequency signal synthesized from the digital / analog signal converter 2 may be received through a single path, and the received signal may be wirelessly processed. Thereafter, the signal-processed analog format synthesized transmission frequency signal may be transferred to a plurality of band pass filters through a single path.
단일 수신기(34)는 무선 주파수 수신 시, 다중 서비스 주파수 대역의 수신 주파수 신호들을 대상으로 신호 처리과정을 실시할 수 있다. 예를 들어 복수 개의 수신용 밴드선택필터로부터 다중 서비스 주파수 대역의 송신 주파수 신호들을 수신하고, 수신된 신호들은 합성된 아날로그 형식의 합성 수신 주파수 신호로 생성하여 디지털 아날로그 신호 변환부(2)로 단일 경로를 통해 전달할 수 있다. When receiving a radio frequency, the single receiver 34 may perform a signal processing process on received frequency signals of multiple service frequency bands. For example, a plurality of reception band selection filters receive transmission frequency signals of multiple service frequency bands, and the received signals are generated as synthesized reception frequency signals in a synthesized analog format to a single path to the digital analog signal conversion unit 2. Can be delivered via
복수 개의 안테나(4:41a,41b,...,41n)는 안테나(4:41a,41b,...,41n)는 서비스하는 주파수의 대역 수에 따라 각각 대응할 수 있는 하나 이상의 안테나를 포함할 수 있으며, 무선 주파수 신호를 방사 또는 수신할 수 있다. The plurality of antennas 4: 41a, 41b,..., And 41n may include one or more antennas, which may correspond to the number of bands of frequencies to be serviced, respectively. And radiate or receive radio frequency signals.
복수 개의 안테나(4:41a,41b,...,41n)는 무선 주파수 신호 송신 시, 단일 송신기(33)의 복수 개의 송신용 밴드패스필터로부터 전달받은 송신 주파수 신호들을 서비스하는 대역 별로 대응하는 안테나(복수 개의 안테나 중 서비스 주파수 대역에 대응되는 적어도 하나의 안테나)를 통해 송신 주파수들을 무선 선로(공기 중)로 방사할 수 있다. When the plurality of antennas 4: 41a, 41b,..., 41n transmit radio frequency signals, antennas corresponding to bands that service transmission frequency signals received from a plurality of transmission bandpass filters of a single transmitter 33 are provided. It is possible to radiate transmission frequencies to a wireless line (in air) through (at least one antenna corresponding to a service frequency band of a plurality of antennas).
복수 개의 안테나(4:41a,41b,...,41n)는 무선 주파수 신호 수신 시, 복수 개의 안테나(4:41a,41b,...,41n) 중 적어도 어느 하나는 무선 선로로부터 다중 서비스 주파수 대역의 송신 주파수 신호들 중 적어도 하나를 수신하고, 수신된 무선 주파수 신호들을 도선 상의 전기적 신호로 변환하여 단일 수신기(34)의 복수 개의 수신용 밴드선택필터로 전달할 수 있다. When the plurality of antennas (4: 41a, 41b, ..., 41n) receive a radio frequency signal, at least one of the plurality of antennas (4: 41a, 41b, ..., 41n) is a multiple service frequency from the radio line At least one of the transmission frequency signals of the band may be received, and the received radio frequency signals may be converted into electrical signals on a conductive line and transmitted to a plurality of reception band selection filters of a single receiver 34.
상기 설명된 본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기(200) 상기 도 1을 참조하여 설명된 통상적인 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기(100)와는 달리 다중 서비스 주파수 대역을 단일 송신기(31)와 단일 수신기(32)를 포함하는 무선 신호 처리부(3)를 통해 신호 처리할 수 있다. 따라서 서비스 주파수 대역을 추가할 때마다 별도의 송신기, 수신기가 필요하지 않고, 추가되는 서비스 대역에 대응할 수 있는 안테나만 추가되면, 추가되는 서비스 주파수 대역을 지원할 수 있다.The radio frequency transmitter and receiver 200 supporting the multi-frequency band according to an embodiment of the present invention described above and the radio frequency transmitter and receiver 100 supporting the conventional multi-frequency band described with reference to FIG. Alternatively, the multi-service frequency band may be signal processed through the wireless signal processor 3 including the single transmitter 31 and the single receiver 32. Therefore, a separate transmitter and receiver are not required every time a service frequency band is added, and only an antenna that can correspond to the additional service band is added, thereby supporting the additional service frequency band.
또한, 상기 서비스 주파수 대역이 추가될 때마다 별도로 추가 구성되는 송신기 및 수신기가 요구되지 않으므로 제품의 제조비용, 무선 통신 시스템의 전력 소모량, 유지 보수에 소모되는 비용과 시간을 절약할 수 있다. In addition, since the transmitter and the receiver are not required to be additionally configured each time the service frequency band is added, it is possible to save the manufacturing cost of the product, the power consumption of the wireless communication system, the cost and time consumed for the maintenance.
도 3은 통상적인 다중 주파수 대역을 지원하는 무선 주파수 송신기의 일 예시 블록 구성도이다. 도 3을 참조하면, 통상적인 다중 주파수 대역을 지원하는 무선 주파수 송신기(300)는 다중 주파수 대역 별로 중간 주파수 필터(302), 국부발진기(LO: Local Oscillator)(303), 믹서(Mixer)(305), 저잡음 증폭기(LNA: Low Noise Amp)(306), 송신 주파수 필터(307)를 포함할 수 있다.3 is an exemplary block diagram of a radio frequency transmitter supporting a typical multiple frequency band. Referring to FIG. 3, a radio frequency transmitter 300 supporting a conventional multiple frequency band includes an intermediate frequency filter 302, a local oscillator 303, and a mixer 305 for each multiple frequency band. ), A low noise amplifier (LNA) 306, and a transmission frequency filter 307.
예를 들어 4개의 서로 다른 주파수 대역을 지원하기 위해서는 복수 개의 중간 주파수 필터(302:302a,302b,302c,302d), 복수 개의 국부발진기(303:303a,303b,303c,303d), 복수 개의 믹서(305:305a,305b,305c,305d), 복수 개의 저잡음 증폭기(306:306a,306b,306c,306d), 복수 개의 송신 주파수 필터(307: 307a,307b,307c,307d)를 각 주파수 대역 별로 포함할 수 있다.For example, to support four different frequency bands, a plurality of intermediate frequency filters 302: 302a, 302b, 302c, 302d, a plurality of local oscillators 303: 303a, 303b, 303c, 303d, and a plurality of mixers ( 305: 305a, 305b, 305c, 305d), a plurality of low noise amplifiers 306: 306a, 306b, 306c, 306d, and a plurality of transmission frequency filters 307: 307a, 307b, 307c, 307d for each frequency band. Can be.
중간 주파수 필터(302)는 디지털-아날로그 변환기(21)로부터 미리 설정된 아날로그 형태의 단일 서비스 주파수 대역의 중간 주파수 신호(IF)(301)를 전달받고, 전달받은 중간 주파수 신호(301)에서 불요파(Spurious)를 제거하는 필터링을 수행한 후 믹서(305)로 필터링된 중간 주파수 신호를 전달할 수 있다. The intermediate frequency filter 302 receives an intermediate frequency signal (IF) 301 of a single service frequency band in a preset analog form from the digital-to-analog converter 21, and removes an unwanted wave from the received intermediate frequency signal 301. After filtering to remove spurious, the filtered intermediate frequency signal may be transferred to the mixer 305.
국부발진기(303)는 믹서(305)로 LO주파수(LO: Local Frequency) 신호(304)를 공급할 수 있다. The local oscillator 303 may supply a Local Frequency (LO) signal 304 to the mixer 305.
믹서(305)는 국부발진기(303)로부터는 공급받은 LO주파수 신호(304)를 사용하여 중간 주파수 필터(302)에서 전달받은 필터링된 중간 주파수 신호를 송신 주파수 대역의 신호로 주파수 상향 변환(Up conversion)할 수 있다. 상향 변환된 송신 주파수 대역의 신호는 저잡음 증폭기(306)로 전달될 수 있다. The mixer 305 uses the LO frequency signal 304 supplied from the local oscillator 303 to up-convert the filtered intermediate frequency signal received from the intermediate frequency filter 302 into a signal of a transmission frequency band. )can do. The signal of the upconverted transmission frequency band may be transferred to the low noise amplifier 306.
저잡음 증폭기(306)는 믹서(305)로부터 전달받은 송신 주파수 대역의 신호의 잡음(Noise)을 최소화하면서 이득(Gain) 증폭한 후 송신 주파수 필터(307)로 전달할 수 있다. The low noise amplifier 306 may amplify a gain while minimizing noise of a signal of a transmission frequency band received from the mixer 305, and then transfer the gain to the transmission frequency filter 307.
송신 주파수 필터(307)는 저잡음 증폭기(306)로부터 증폭된 송신 주파수 신호를 전달받고, 전달받은 신호에서 다시 불필요한 주파수 성분들을 제거하는 필터링을 수행한 후 무선 주파수 신호(RF: Radio Frequency)(308)를 출력할 수 있다. 여기서 제거되는 불필요한 주파수 성분들은 다음과 같다. The transmission frequency filter 307 receives the amplified transmission frequency signal from the low noise amplifier 306, performs filtering to remove unnecessary frequency components from the received signal, and then performs a radio frequency signal (RF) 308. You can output Unnecessary frequency components removed here are as follows.
첫째, 믹서(305)에서 주파수 상향 변환 중에 무선 주파수 송신기 내부에서 생성된 주파수 성분이 함께 유입되어 불필요하게 생성되는 주파수인 이미지 주파수(image frequency)이다. 송신 주파수 필터(307)는 이미지 주파수 제거 필터(image reject filter)로서 기능을 가지므로 송신 주파수 신호를 제외한 불필요한 이미지 주파수(image frequency)를 제거하여 송신 주파수 신호의 안정성을 보장한다. First, an image frequency, which is a frequency in which the frequency components generated inside the radio frequency transmitter are introduced together during the frequency upconversion in the mixer 305, is generated unnecessarily. Since the transmission frequency filter 307 has a function as an image reject filter, it removes unnecessary image frequencies except for the transmission frequency signal to ensure the stability of the transmission frequency signal.
둘째, 저잡음 증폭기(306)의 증폭 과정에서 생성되는 불요파(Spurious)이다. 송신 주파수 필터(307)는 송신 주파수 대역의 신호를 제외한 불필요한 신호를 제거하면서 송신 주파수 대역만을 걸러내어 출력한다. Second, spurious is generated during the amplification of the low noise amplifier 306. The transmission frequency filter 307 filters out only the transmission frequency band and removes unnecessary signals except for signals in the transmission frequency band.
이상 설명된 통상적인 다중 주파수 대역을 지원하는 무선 주파수 송신기(300)의 경우 다중 주파수 대역의 송신을 위해서는 무선 주파수 송신기의 구성부들을 송신하고자 하는 서비스 주파수 대역 개수만큼 추가 배열해야 한다. 따라서 상기 설명된 통상적인 무선 주파수 송신기(300)의 구성을 바탕으로 다중 주파수를 서비스하기 위해서는 서비스 주파수 대역 개수만큼 추가되는 구성부들로 인해 제품의 제조가격이 상승하고, 설치 후 유지 보수 비용이 증가하게 된다. In the case of the radio frequency transmitter 300 supporting the conventional multi-frequency band described above, in order to transmit the multi-frequency band, components of the radio frequency transmitter need to be additionally arranged as many as the number of service frequency bands to be transmitted. Therefore, in order to service multiple frequencies based on the above-described configuration of the conventional radio frequency transmitter 300, the manufacturing cost of the product increases due to components added as many as the number of service frequency bands, and the maintenance cost increases after installation. do.
도 4는 본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기의 블록도이다. 도 4를 참조하면, 본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기(400)는 중간 주파수 필터(402), 국부발진기(403), 믹서(405), 저잡음 증폭기(406), 멀티밴드패스필터 방식의 복수 개의 송신용 밴드패스필터들(31a,31b,31c,31d )을 포함하는 단일 송신기(33)를 포함할 수 있다.4 is a block diagram of a radio frequency transmitter supporting multiple frequency bands according to an embodiment of the present invention. 4, a radio frequency transmitter 400 supporting multiple frequency bands according to an embodiment of the present invention includes an intermediate frequency filter 402, a local oscillator 403, a mixer 405, and a low noise amplifier 406. It may include a single transmitter 33 including a plurality of transmission band pass filters (31a, 31b, 31c, 31d) of the multi-band pass filter.
중간 주파수 필터(402)는 디지털-아날로그 신호 변환기(21)에 구비된 디지털-아날로그 변환기(21)로부터 다중 서비스 주파수 대역의 중간 주파수들(401a,401b,401c,401d)이 합성된 아날로그 형식의 합성 중간 주파수 신호(401)를 단일 경로를 통해 전달받고, 전달받은 아날로그 형식의 합성 중간 주파수 신호(401)에서 불요파(Spurious)를 제거하는 필터링을 수행한 후 믹서(405)로 필터링된 합성 중간 주파수 신호를 단일 경로를 통해 전달할 수 있다. The intermediate frequency filter 402 synthesizes an analog form in which intermediate frequencies 401a, 401b, 401c, and 401d of multiple service frequency bands are synthesized from the digital-analog converter 21 provided in the digital-analog signal converter 21. The synthesized intermediate frequency filtered by the mixer 405 after receiving the intermediate frequency signal 401 through a single path and performing filtering to remove spurious from the received synthesized intermediate frequency signal 401 in analog format. Signals can be delivered through a single path.
국부발진기(302)는 믹서(405)로 LO주파수 신호(404)를 공급할 수 있다.The local oscillator 302 can supply the LO frequency signal 404 to the mixer 405.
믹서(405)는 국부발진기(403)로부터는 전달받은 LO주파수 신호(404)를 사용하여 중간 주파수 필터(402)에서 전달받은 필터링된 합성 중간 주파수 신호를 송신 주파수 대역의 합성 송신 주파수 신호로 상향 변환한다. 상향 변환된 합성 송신 주파수 신호는 단일 경로를 통해 저잡음 증폭기(406)로 전달될 수 있다. The mixer 405 up-converts the filtered synthesized intermediate frequency signal received from the intermediate frequency filter 402 to the synthesized transmit frequency signal of the transmission frequency band using the LO frequency signal 404 received from the local oscillator 403. do. The upconverted composite transmit frequency signal may be delivered to the low noise amplifier 406 via a single path.
저잡음 증폭기(406)는 믹서(405)로부터 전달받은 합성 송신 주파수 신호의 잡음을 최소화하면서 이득 증폭한 후 단일 송신기(31)로 전달할 수 있다.The low noise amplifier 406 may amplify the gain while minimizing the noise of the synthesized transmission frequency signal received from the mixer 405 and then transfer the gain to the single transmitter 31.
단일 송신기(33)는 서비스 대역 별로 대응되는 복수 개의 송신용 밴드패스필터들(31a,31b,31c,31d)을 포함할 수 있다. The single transmitter 33 may include a plurality of transmission band pass filters 31a, 31b, 31c, and 31d corresponding to service bands.
단일 송신기(33)는 저잡음 증폭기(304)로부터 증폭된 합성 송신 주파수 신호를 단일 경로를 통해 전달받고, 전달받은 합성 송신 주파수 신호를 대상으로 복수 개의 송신용 밴드패스필터들(31a,31b,31c,31d) 중 각 서비스 주파수 대역 별로 대응하는 송신용 밴드패스필터들(31a,31b,31c,31d)은 각각 해당 서비스 주파수 대역의 송신 주파수를 필터링한 후 전달 경로를 통해 출력할 수 있다. 이때, 복수 개의 밴드패스필터들(31a,31b,31c,31d)은 서비스 대역 별로 필터링을 하고, 필터링이 완료된 송신 주파수들을 각 서비스 주파수 대역 별 전달 경로를 통해 복수 개의 안테나(4:41a,41b,...,41n) 중 각각의 송신 주파수 대역에 대응되는 안테나(4:41a,41b,...,41n)로 전달할 수 있다.The single transmitter 33 receives the synthesized transmission frequency signal amplified from the low noise amplifier 304 through a single path, and transmits the plurality of transmission band pass filters 31a, 31b, 31c to the received synthesis transmission frequency signal. Transmission band pass filters 31a, 31b, 31c, and 31d corresponding to respective service frequency bands of the 31d) may be output through the transmission path after filtering the transmission frequency of the corresponding service frequency band. In this case, the plurality of band pass filters 31a, 31b, 31c, and 31d filter by service bands, and transmit the filtered transmission frequencies through a transmission path for each service frequency band to transmit a plurality of antennas (4: 41a, 41b, ..., 41n may be transmitted to the antennas 4: 41a, 41b, ..., 41n corresponding to the respective transmission frequency bands.
상기 본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기(400) 상기 도 3을 참조하여 설명된 통상적인 무선 주파수 송신기(300)와 달리 다중 주파수 대역의 송신하기 위해서 서비스 주파수 대역만큼 무선 주파수 송신기의 구성부들을 추가할 필요가 없다. 따라서 제조 단가를 절감할 수 있으며, 합성 된 신호와 단일 경로를 사용하여 동작하는 간단한 구성으로, 운용 시 소비전력을 종래의 제품들보다 절약할 수 있으며, 설치 후 운용 및 유지보수 비용을 절감할 수 있다. The radio frequency transmitter 400 supporting the multi-frequency band according to an embodiment of the present invention differs from the conventional radio frequency transmitter 300 described with reference to FIG. There is no need to add components to the radio frequency transmitter. Therefore, the manufacturing cost can be reduced, and the simple configuration that operates using the synthesized signal and the single path can save the power consumption during operation, compared to the conventional products, and reduce the post-installation operation and maintenance costs. have.
도 5는 본 발명의 다른 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기의 블록도이다. 5 is a block diagram of a radio frequency transmitter supporting multiple frequency bands according to another embodiment of the present invention.
본 발명의 다른 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기(500)는 상기 도 4를 참조하여 자세히 설명된 본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기(400)와 비교하면 다음과 같은 두 가지 점이 상이하다. The radio frequency transmitter 500 supporting the multi-frequency band according to another embodiment of the present invention is a radio frequency transmitter 400 supporting the multi-frequency band according to an embodiment of the present invention described in detail with reference to FIG. Compared with, there are two differences.
첫째, 단일 국부발진기(403) 대신에 서로 다른 주파수의 LO주파수 신호들(404:404a,404b,404c,404d)을 생성하는 복수 개의 국부발진기(403:403a,403b, 403c,403d)를 사용한다. 예를 들어 상기 본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기(400)는 단일 국부발진기(403)를 사용하여 최종 출력되는 무선 주파수들(407:407a,407b,407c,407d) 간의 이격 거리가 중간 주파수들(401:401a,401b,401c,401d)의 이격 거리와 동일하다. 하지만, 다른 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기(500)는 서로 다른 주파수를 생성하는 복수 개의 국부발진기(403:403a,403b, 403c,403d)를 사용하여 최종 출력되는 무선 주파수들(407:407a,407b,407c,407d) 간의 이격 거리를 조절할 수 있다.First, instead of a single local oscillator 403, a plurality of local oscillators 403: 403a, 403b, 403c, and 403d that generate LO frequency signals 404: 404a, 404b, 404c and 404d of different frequencies are used. . For example, the radio frequency transmitter 400 supporting the multi-frequency band according to an embodiment of the present invention uses the single local oscillator 403 to finally output radio frequencies 407: 407a, 407b, 407c, and 407d. ) Is equal to the separation distance of the intermediate frequencies (401: 401a, 401b, 401c, 401d). However, the radio frequency transmitter 500 supporting the multi-frequency band according to another embodiment uses the plurality of local oscillators 403: 403a, 403b, 403c, and 403d to generate different frequencies. The separation distance between (407: 407a, 407b, 407c, and 407d) can be adjusted.
둘째, 주파수결합기(408)를 통해 상기 복수 개의 국부발진기(403:403a,403b, 403c,403d)에서 생성되는 서로 다른 주파수의 LO주파수 신호들(404:404a,404b,404c,404d)을 하나의 합성 LO주파수 신호(409)로 생성하여 단일 경로로 전달할 수 있다.Second, LO frequency signals 404: 404a, 404b, 404c, 404d of different frequencies generated by the plurality of local oscillators 403: 403a, 403b, 403c, and 403d through the frequency combiner 408. It can be generated as a composite LO frequency signal 409 and delivered in a single path.
이하 본 발명의 다른 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기(500)의 각 구성부의 상세한 설명은 상기 설명된 두 가지를 제외하고 상기 도 4의 구성부의 상세한 설명과 동일하므로 동일한 구성부에 대한 상세한 설명은 생략한다. Hereinafter, the detailed description of each component of the radio frequency transmitter 500 supporting the multi-frequency band according to another embodiment of the present invention is the same as the detailed description of the configuration of FIG. Detailed description thereof will be omitted.
도 5를 참조하면, 본 발명의 다른 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기(500)는 중간 주파수 필터(402), 서로 다른 주파수를 생성하는 복수 개의 국부발진기(403:403a,403b, 403c,403d), 주파수결합기(408), 믹서(405), 저잡음 증폭기(406), 멀티밴드패스필터 방식의 복수 개의 송신용 밴드패스필터들(31a,31b,31c,31d)을 포함하는 단일 송신기(33)를 포함할 수 있다.Referring to FIG. 5, a radio frequency transmitter 500 supporting multiple frequency bands according to another embodiment of the present invention includes an intermediate frequency filter 402 and a plurality of local oscillators 403: 403a and 403b generating different frequencies. 403c, 403d, a frequency combiner 408, a mixer 405, a low noise amplifier 406, a multiband pass filter type of a plurality of transmission bandpass filters 31a, 31b, 31c, 31d It may include a transmitter 33.
하기에는 복수 개의 국부발진기(403:403a,403b, 403c,403d)와 주파수결합기(408)에 대하여 자세히 설명한다.Hereinafter, the plurality of local oscillators 403: 403a, 403b, 403c, and 403d and the frequency combiner 408 will be described in detail.
복수 개의 국부발진기(403:403a,403b, 403c,403d)는 각각 서로 다른 주파수를 갖는 복수 개의 LO주파수 신호들(404:404a,404b,404c,404d)을 생성하고, 생성된 복수 개의 LO주파수 신호들(404:404a,404b,404c,404d)을 주파수결합기(408)로 전달할 수 있다. 여기서 다른 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기(500)의 이해를 돕기 위하여 복수 개의 국부발진기(403:403a,403b,403c,403d)는 네 개의 국부발진기들을 포함하였지만, 이에 한정되지 않고 최소 두 개 이상에서 최대 서비스하는 다중 주파수 대역의 중간 주파수의 개수만큼의 추가로 국부발진기를 포함할 수 있다. 즉, 디지털-아날로그 변환기(21)에서 출력되는 주파수 밴드의 개수만큼의 국부발진기들을 포함할 수 있다.The plurality of local oscillators 403: 403a, 403b, 403c, and 403d respectively generate a plurality of LO frequency signals 404: 404a, 404b, 404c, and 404d having different frequencies, and generate the plurality of LO frequency signals. (404: 404a, 404b, 404c, 404d) may be passed to the frequency combiner (408). Here, the plurality of local oscillators 403: 403a, 403b, 403c, and 403d include four local oscillators to help the understanding of the radio frequency transmitter 500 supporting the multi-frequency band according to another embodiment, but is not limited thereto. And may additionally include a local oscillator as many as the number of intermediate frequencies of the multi-frequency band serving at least two or more maximum. That is, it may include as many local oscillators as the number of frequency bands output from the digital-to-analog converter 21.
주파수 결합기(408)는 복수 개의 국부발진기(403:403a,403b, 403c,403d)로부터 각각 서로 다른 주파수를 갖는 복수 개의 LO주파수 신호들(404:404a,404b,404c,404d)을 전달받고, 전달받은 복수 개의 LO주파수 신호들(404:404a,404b,404c,404d)을 하나의 합성 LO주파수 신호(409)로 생성할 수 있다. 생성된 합성 LO주파수 신호(409)는 믹서(303)로 단일 경로를 통해 전달될 수 있다. The frequency combiner 408 receives and transmits a plurality of LO frequency signals 404: 404a, 404b, 404c, and 404d having different frequencies from the plurality of local oscillators 403: 403a, 403b, 403c, and 403d, respectively. The received plurality of LO frequency signals 404: 404a, 404b, 404c, and 404d may be generated as one synthesized LO frequency signal 409. The generated synthesized LO frequency signal 409 may be delivered to the mixer 303 via a single path.
이상 설명된 본 발명의 다른 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기(500)는 상기 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기(400)에 비해 출력되는 무선 주파수 신호들(407:407a,407b,407c,407d)의 주파수간 이격 거리를 조절할 수 있다. 따라서 출력되는 무선 주파수 신호들(407:407a,407b,407c,407d)의 주파수간 중첩으로 발생할 수 있는 노이즈를 방지할 수 있다. 이는 출력되는 무선 주파수 신호들(407:407a,407b,407c,407d)의 품질을 높일 수 있다. The radio frequency transmitter 500 supporting the multiple frequency band according to another embodiment of the present invention described above is compared to the radio frequency signals outputting the radio frequency transmitter 400 supporting the multiple frequency band according to the embodiment. The separation distance between frequencies of (407: 407a, 407b, 407c, and 407d) can be adjusted. Therefore, noise that may occur due to overlap between frequencies of the output radio frequency signals 407: 407a, 407b, 407c, and 407d can be prevented. This may increase the quality of the output radio frequency signals 407: 407a, 407b, 407c, and 407d.
또한, 본 발명의 다른 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기(500)는 상기 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 송신기(400)와 동일하게 다중 주파수 대역의 송신하기 위해서 서비스 주파수 대역만큼 무선 주파수 송신기의 구성부들을 추가 배열할 필요가 없다.In addition, the radio frequency transmitter 500 supporting the multi-frequency band according to another embodiment of the present invention transmits the multi-frequency band in the same manner as the radio frequency transmitter 400 supporting the multi-frequency band according to the embodiment There is no need to further arrange the components of the radio frequency transmitter as much as the service frequency band.
다음은 본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기의 이해를 돕기 위하여 통상적인 다중 주파수 대역을 지원하는 무선 주파수 수신기에 대하여 설명한다.The following describes a conventional radio frequency receiver supporting a multi-frequency band in order to help the understanding of a radio frequency receiver supporting a multi-frequency band according to an embodiment of the present invention.
도 6은 통상적인 다중 주파수 대역을 지원하는 무선 주파수 수신기의 일 예시 블록도이다. 도 6을 참조하면, 통상적인 다중 주파수 대역을 지원하는 무선 주파수 수신기(600)는 밴드선택필터(BSF:Band Select Filter)(601), 저잡음 증폭기(LNA: Low Noise Amp)(602), 이미지제거필터(IRF: Image Reject Filter)(603), 국부발진기(Local Oscillator)(604), 믹서(Mixer)(606), 중간 주파수 증폭기(IF amplifier)(607), 채널선택필터(CSF: channel Select Filter)(608)를 포함할 수 있다.6 is an exemplary block diagram of a radio frequency receiver supporting a typical multiple frequency band. Referring to FIG. 6, a radio frequency receiver 600 supporting a conventional multi-frequency band includes a band select filter (BSF) 601, a low noise amplifier (LNA) 602, and image removal. Image Reject Filter (IRF) (603), Local Oscillator (604), Mixer (606), IF Amplifier (607), Channel Select Filter (CSF) 608 may be included.
예를 들어 4개의 서로 다른 주파수 대역을 지원하기 위해서는 복수 개의 밴드선택필터 (601:601a,601b,601c,601d), 복수 개의 저잡음 증폭기(602:602a,602b,602c,602d), 복수 개의 이미지제거필터(603:603a,603b,603c,603d), 복수 개의 국부발진기(604: 604a,604b,604c,604d), 복수 개의 믹서(606:606a,606b,606c,606d), 복수 개의 중간 주파수 증폭기(607: 607a,607b,607c,607d), 복수 개의 채널선택필터(608:608a,608b,608c,608d)를 각 주파수 대역 별로 포함할 수 있다.For example, to support four different frequency bands, a plurality of band selection filters (601: 601a, 601b, 601c, 601d), a plurality of low noise amplifiers (602: 602a, 602b, 602c, 602d), and a plurality of image removals Filters 603: 603a, 603b, 603c, 603d, a plurality of local oscillators 604: 604a, 604b, 604c, 604d, a plurality of mixers 606: 606a, 606b, 606c, 606d, a plurality of intermediate frequency amplifiers ( 607: 607a, 607b, 607c, and 607d) and a plurality of channel selection filters 608: 608a, 608b, 608c, and 608d may be included for each frequency band.
먼저, 안테나(4)는 공기 중의 전자기파 신호를 수신하여 도전 상의 전기적 신호로 변환시켜 밴드선택필터(601)로 전달할 수 있다.First, the antenna 4 may receive an electromagnetic wave signal in the air, convert it into an electrical signal on a conductive wire, and transmit the converted electromagnetic signal to the band selection filter 601.
밴드선택필터(601)는 전달받은 신호에서 원하는 주파수 대역만을 대역통과(band pass) 필터링한 후 저잡음 증폭기(304)로 전달할 수 있다.The band selection filter 601 may band pass filter only a desired frequency band from the received signal and then transmit the band pass filter to the low noise amplifier 304.
저잡음 증폭기(304)는 전달받은 수신 주파수 신호를 잡음까지 증폭되는 것은 억제하면서 초대한 증폭한 후, 증폭이 완료된 수신 주파수 신호를 이미지제거필터(402)로 전달할 수 있다. The low noise amplifier 304 may amplify the received reception frequency signal while suppressing amplification to noise and then amplify the received reception frequency signal to the image removal filter 402.
이미지제거필터(402)는 전달받은 증폭된 신호 중 이미지 주파수(image frequency)가 존재하면 노이즈 성분으로 작용할 수 있으므로 믹서(606)로 유입되는 전에 다시 한번 대역통과 필터링을 하여 믹서(606)로 전달할 수 있다. Since the image removal filter 402 may act as a noise component when an image frequency is present among the amplified signals received, the image elimination filter 402 may pass the bandpass filtering once again before being introduced into the mixer 606 to be delivered to the mixer 606. have.
또한, 상기 이미지제거필터(402)는 부가적으로 불요파도 함께 제거할 수 있으며, 수신 주파수 단과 중간 주파수 단을 격리시켜 무선 주파수 수신기의 안정성을 높이는 역할을 할 수 있다. In addition, the image removal filter 402 may additionally remove the unwanted wave, and may isolate the receiving frequency stage and the intermediate frequency stage, thereby increasing the stability of the radio frequency receiver.
국부발진기(604)는 믹서(606)로 주파수 합성을 위한 LO주파수 신호(605)를 생성하여 공급할 수 있다.The local oscillator 604 may generate and supply the LO frequency signal 605 for frequency synthesis to the mixer 606.
믹서(606)는 국부발진기(604)로부터 공급되는 LO주파수 신호(605)를 사용하여 이미지제거필터(603)에서 전달받은 수신 주파수 신호를 중간 주파수 신호로 주파수 하향 변환(dowm conversion)한다. 하향 변환된 중간 주파수 신호는 중간 주파수 증폭기(607)로 전달될 수 있다. The mixer 606 uses the LO frequency signal 605 supplied from the local oscillator 604 to frequency down-convert the received frequency signal received from the image rejection filter 603 into an intermediate frequency signal. The down-converted intermediate frequency signal may be transmitted to the intermediate frequency amplifier 607.
중간 주파수 증폭기(607)는 믹서(606)로부터 전달받은 중간 주파수 신호의 잡음을 최소화하면서 이득 증폭한 후 채널선택필터(608)로 전달할 수 있다. The intermediate frequency amplifier 607 may amplify the gain while minimizing the noise of the intermediate frequency signal received from the mixer 606, and then transfer the gain to the channel selection filter 608.
채널선택필터(608)는 중간 주파수 증폭기(607)로부터 증폭된 중간 주파수 신호를 전달받고, 대역통과 필터링을 하여 원하는 서비스 주파수 대역의 중간 주파수를 걸러낼 수 있다. 부가적으로 불요파도 함께 제거될 수 있다. 필터링이 완료된 중간 주파수 신호는 아날로그-디지털 변환기(22) 전달될 수 있다. The channel selection filter 608 receives the intermediate frequency signal amplified from the intermediate frequency amplifier 607 and filters the intermediate frequency of the desired service frequency band by performing bandpass filtering. In addition, unwanted waves can be removed together. The filtered intermediate frequency signal may be transmitted to the analog-to-digital converter 22.
이상 설명된 통상적인 다중 주파수 대역을 지원하는 무선 주파수 수신기(600)의 경우 다중 주파수 대역의 수신을 위해서는 무선 주파수 수신기의 구성부들을 수신하고자 하는 서비스 주파수 대역 개수만큼 추가 배열해야 한다. 따라서 상기 통상적인 다중 주파수 대역을 지원하는 무선 주파수 수신기(600)의 구성을 바탕으로 다중 주파수 대역을 서비스하기 위해서는 서비스 주파수 대역 개수만큼 추가되는 구성부들로 인해 제품의 제조가격이 상승하고, 설치 후 유지 보수 비용이 증가하게 된다.In the case of the conventional radio frequency receiver 600 supporting the multi-frequency band described above, in order to receive the multi-frequency band, components of the radio frequency receiver need to be additionally arranged as many as the number of service frequency bands to be received. Therefore, in order to service the multiple frequency bands based on the configuration of the radio frequency receiver 600 supporting the conventional multi-frequency band, the manufacturing price of the product increases due to the number of components added to the service frequency band, and is maintained after installation. The cost of repairs will increase.
도 7은 본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기의 블록도이다.7 is a block diagram of a radio frequency receiver supporting multiple frequency bands according to an embodiment of the present invention.
본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기(700)와 상기 도 6을 참조하여 자세히 설명된 통상적인 다중 주파수 대역을 지원하는 무선 주파수 수신기(600)와 다음과 같은 점이 상이하다. The following points are different from the radio frequency receiver 700 supporting the multi-frequency band according to an embodiment of the present invention and the radio frequency receiver 600 supporting the conventional multi-frequency band described in detail with reference to FIG. 6. Do.
본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기(700)는 복수 개의 수신용 밴드선택필터들(32a,32b,32c,32d)을 포함하는 단일 수신기(34)를 포함할 수 있다.A radio frequency receiver 700 supporting multiple frequency bands according to an embodiment of the present invention may include a single receiver 34 including a plurality of reception band selection filters 32a, 32b, 32c, and 32d. have.
이하 본 발명의 본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기(700)의 각 구성부의 상세한 설명은 상기 설명된 점을 제외하고 상기 도 6의 구성부의 상세한 설명과 동일하므로 동일한 구성부에 대한 상세한 설명은 생략한다. Hereinafter, the detailed description of each component of the radio frequency receiver 700 supporting the multi-frequency band according to an embodiment of the present invention is the same as the detailed description of the component of FIG. Detailed description of the components will be omitted.
도 7을 참조하면, 본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기(700)는 멀티밴드패스필터 방식의 복수 개의 수신용 밴드선택필터들(32a,32b,32c,32d)을 포함하는 단일 수신기(34), 저잡음 증폭기(702), 이미지제거필터(703), 국부발진기(704), 믹서(706), 중간 주파수 증폭기(707), 채널선택필터 (708)를 포함할 수 있다.Referring to FIG. 7, a radio frequency receiver 700 supporting multiple frequency bands according to an embodiment of the present invention includes a plurality of reception band selection filters 32a, 32b, 32c, and 32d of a multiband pass filter. It may include a single receiver 34, low noise amplifier 702, image rejection filter 703, local oscillator 704, mixer 706, intermediate frequency amplifier 707, channel selection filter 708 including have.
하기에는 복수 개의 수신용 밴드선택필터들(32a,32b,32c,32d)을 포함하는 단일 수신기(34)에 대하여 자세히 설명한다. Hereinafter, a single receiver 34 including a plurality of reception band selection filters 32a, 32b, 32c, and 32d will be described in detail.
단일 수신기(34)의 복수 개의 수신용 밴드선택필터들(32a,32b,32c,32d)은 안테나(4) 들로부터 수신된 무선 주파수 신호들(407:407a,407b,407c,407d)을 각각의 주파수 대역 별로 필터링한 후, 다시 하나의 합성된 수신 주파수 신호로 생성하여 저잡음 증폭기(702)로 전달할 수 있다. 예를 들어 복수 개의 수신용 밴드선택필터(32a,32b,32c,32d)는 무선 주파수 수신 시, 서비스 대역 별로 구비된 전달 경로를 통해 복수 개의 안테나(4:41a,41b,...,41n) 중 적어도 어느 하나로부터 다중 서비스 대역에 속하는 송신 주파수 신호들을 전달받을 수 있다. 전달받은 신호들을 복수 개의 수신용 밴드선택필터(32a,32b,32c,32d)들을 통해 서비스 대역 별로 필터링을 하고, 다시 하나의 합성된 다중 서비스 주파수 대역의 합성 수신 주파수로 생성하여 단일 경로를 통해 저잡음 증폭기(702)로 전달할 수 있다. The plurality of receiving band selection filters 32a, 32b, 32c, and 32d of the single receiver 34 respectively receive radio frequency signals 407: 407a, 407b, 407c, and 407d received from the antennas 4, respectively. After filtering for each frequency band, the signal may be generated as one synthesized reception frequency signal and transferred to the low noise amplifier 702. For example, the plurality of reception band selection filters 32a, 32b, 32c, and 32d receive a plurality of antennas (4: 41a, 41b, ..., 41n) through a transmission path provided for each service band when receiving radio frequencies. Transmission frequency signals belonging to the multiple service bands may be received from at least one of the following. The received signals are filtered for each service band through a plurality of reception band selection filters 32a, 32b, 32c, and 32d, and are again generated as a synthesized reception frequency of one synthesized multiple service frequency band, thereby providing low noise through a single path. May be passed to amplifier 702.
상기 본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기(700) 상기 도 6을 참조하여 설명된 통상적인 무선 주파수 수신기(600)와 달리 다중 주파수 대역의 수신하기 위해서 서비스 주파수 대역만큼 무선 주파수 송신기의 구성부들을 추가할 필요가 없다. 따라서 제조 단가를 절감할 수 있으며, 합성 된 신호와 단일 경로를 사용하여 동작하는 간단한 구성으로, 운용 시 소비전력을 종래의 제품들보다 절약할 수 있으며, 설치 후 운용 및 유지보수 비용을 절감할 수 있다. The radio frequency receiver 700 supporting the multi-frequency band according to an embodiment of the present invention differs from the conventional radio frequency receiver 600 described with reference to FIG. 6 as much as the service frequency band to receive the multi-frequency band. There is no need to add components to the radio frequency transmitter. Therefore, the manufacturing cost can be reduced, and the simple configuration that operates using the synthesized signal and the single path can save the power consumption during operation, compared to the conventional products, and reduce the post-installation operation and maintenance costs. have.
도 8은 본 발명의 다른 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기의 블록도이다. 8 is a block diagram of a radio frequency receiver supporting multiple frequency bands according to another embodiment of the present invention.
본 발명의 다른 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기 (800)는 상기 도 7을 참조하여 자세히 설명된 본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기(700)와 비교하면 다음과 같은 두 가지 점이 상이하다. A radio frequency receiver 800 supporting multiple frequency bands according to another embodiment of the present invention is a radio frequency receiver 700 supporting multiple frequency bands according to an embodiment of the present invention described in detail with reference to FIG. Compared with, there are two differences.
첫째, 단일 국부발진기(704) 대신에 서로 다른 주파수의 LO주파수 신호들(404:404a,404b,404c,404d)을 생성하는 복수 개의 국부발진기(403:403a,403b, 403c,403d)를 사용한다. 예를 들어 상기 본 발명의 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기(700)는 단일 국부발진기(704)를 사용하여 최종 처리되는 중간 주파수들(401:401a,401b,401c,401d) 간의 이격 거리가 무선 주파수들(407:407a,407b,407c,407d)의 이격 거리와 동일하다. 하지만, 본 발명의 제2 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기(800)는 서로 다른 주파수를 생성하는 복수 개의 국부발진기(403:403a,403b, 403c,403d)를 사용하여 최종 처리되는 중간 주파수들(401:401a,401b,401c,401d) 간의 이격 거리를 조절할 수 있다.First, instead of a single local oscillator 704, a plurality of local oscillators 403: 403a, 403b, 403c, and 403d that generate LO frequency signals 404: 404a, 404b, 404c and 404d of different frequencies are used. . For example, the radio frequency receiver 700 supporting the multi-frequency band according to an embodiment of the present invention uses the single local oscillator 704 to finally process intermediate frequencies 401: 401a, 401b, 401c, 401d. ) Is equal to the separation distance of radio frequencies 407: 407a, 407b, 407c, and 407d. However, the radio frequency receiver 800 supporting the multiple frequency band according to the second embodiment of the present invention uses a plurality of local oscillators 403: 403a, 403b, 403c, and 403d to generate different frequencies for final processing. The separation distance between the intermediate frequencies 401: 401a, 401b, 401c, and 401d may be adjusted.
둘째, 주파수결합기(408)을 통해 상기 복수 개의 국부발진기(403:403a,403b, 403c,403d)에서 생성되는 서로 다른 주파수의 LO주파수 신호들(404:404a,404b,404c,404d)을 하나의 합성 LO주파수 신호(409)로 생성하여 단일 경로로 전달할 수 있다.Second, LO frequency signals 404: 404a, 404b, 404c, 404d of different frequencies generated by the plurality of local oscillators 403: 403a, 403b, 403c, and 403d through the frequency combiner 408. It can be generated as a composite LO frequency signal 409 and delivered in a single path.
이하 본 발명의 다른 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기(800)의 각 구성부의 상세한 설명은 상기 설명된 두 가지를 제외하고 상기 도 7의 구성부의 상세한 설명과 동일하므로 동일한 구성부에 대한 상세한 설명은 생략한다. Hereinafter, the detailed description of each component of the radio frequency receiver 800 supporting the multi-frequency band according to another embodiment of the present invention is the same as the detailed description of the component of FIG. Detailed description thereof will be omitted.
도 8을 참조하면, 본 발명의 다른 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기(800)는 멀티밴드패스필터 방식의 복수 개의 수신용 밴드선택필터들(32a,32b,32c,32d)을 포함하는 단일 수신기(34), 저잡음 증폭기(702), 이미지제거필터(703), 서로 다른 주파수를 생성하는 복수 개의 국부발진기(403:403a,403b, 403c,403d), 주파수결합기(408), 믹서(706), 중간 주파수 증폭기(707), 채널선택필터 (708)를 포함할 수 있다. Referring to FIG. 8, a radio frequency receiver 800 supporting multiple frequency bands according to another embodiment of the present invention includes a plurality of reception band selection filters 32a, 32b, 32c, and 32d of a multiband pass filter. A single receiver 34, a low noise amplifier 702, an image rejection filter 703, a plurality of local oscillators (403: 403a, 403b, 403c, 403d) to generate different frequencies, frequency combiner 408, A mixer 706, an intermediate frequency amplifier 707, and a channel select filter 708 may be included.
하기에는 복수 개의 국부발진기(403:403a,403b, 403c,403d)와 주파수결합기(408)에 대하여 자세히 설명한다.Hereinafter, the plurality of local oscillators 403: 403a, 403b, 403c, and 403d and the frequency combiner 408 will be described in detail.
복수 개의 국부발진기(403:403a,403b, 403c,403d)는 각각 서로 다른 주파수를 갖는 복수 개의 LO주파수 신호들(404:404a,404b,404c,404d)을 생성하고, 생성된 복수 개의 LO주파수 신호들(404:404a,404b,404c,404d)을 주파수결합기(408)로 전달할 수 있다. 여기서 제 2 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기(800)의 이해를 돕기 위하여 복수 개의 국부발진기(403:403a,403b, 403c,403d)는 네 개의 국부발진기들을 포함하였지만, 이에 한정되지 않고 최소 두 개 이상에서 최대 서비스하는 다중 주파수 대역의 무선 주파수의 개수만큼의 추가로 국부발진기를 포함할 수 있다. 즉, 아날로그-디지털 변환기(22)로 입력되는 주파수 밴드의 개수만큼의 국부발진기들을 포함할 수 있다.The plurality of local oscillators 403: 403a, 403b, 403c, and 403d respectively generate a plurality of LO frequency signals 404: 404a, 404b, 404c, and 404d having different frequencies, and generate the plurality of LO frequency signals. (404: 404a, 404b, 404c, 404d) may be passed to the frequency combiner (408). Here, the plurality of local oscillators 403: 403a, 403b, 403c, and 403d include four local oscillators in order to help the understanding of the radio frequency receiver 800 supporting the multiple frequency bands according to the second embodiment. In addition, the local oscillator may further include as many as the number of radio frequencies of the multi-frequency band serving at least two or more maximum. That is, it may include as many local oscillators as the number of frequency bands input to the analog-to-digital converter 22.
주파수 결합기(408)는 복수 개의 국부발진기(403:403a,403b, 403c,403d)로부터 각각 서로 다른 주파수를 갖는 복수 개의 LO주파수 신호들(404:404a,404b,404c,404d)을 전달받고, 전달받은 복수 개의 LO주파수 신호들(404:404a,404b,404c,404d)을 하나의 합성 LO주파수 신호(409)로 생성할 수 있다. 생성된 합성 LO주파수 신호(409)는 믹서(706)로 단일 경로를 통해 전달될 수 있다.The frequency combiner 408 receives and transmits a plurality of LO frequency signals 404: 404a, 404b, 404c, and 404d having different frequencies from the plurality of local oscillators 403: 403a, 403b, 403c, and 403d, respectively. The received plurality of LO frequency signals 404: 404a, 404b, 404c, and 404d may be generated as one synthesized LO frequency signal 409. The generated synthesized LO frequency signal 409 may be delivered to the mixer 706 via a single path.
이상 설명된 본 발명의 다른 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기(800)는 상기 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기(700)에 비해 처리되는 중간 주파수 신호들(401:401a,401b,401c,401d)의 주파수간 이격 거리를 조절할 수 있다. 따라서 처리되는 중간 주파수 신호들(401:401a,401b,401c,401d)의 주파수간 중첩으로 발생할 수 있는 노이즈를 방지할 수 있다. 이는 처리되는 중간 주파수 신호들(401:401a,401b,401c,401d)의 품질을 높일 수 있다. The radio frequency receiver 800 supporting the multi-frequency band according to another embodiment of the present invention described above is an intermediate frequency signal processed compared to the radio frequency receiver 700 supporting the multi-frequency band according to the embodiment. The separation distance between frequencies of (401: 401a, 401b, 401c, and 401d) can be adjusted. Therefore, it is possible to prevent noise that may occur due to overlap between frequencies of the intermediate frequency signals 401: 401a, 401b, 401c, and 401d that are processed. This can improve the quality of the intermediate frequency signals 401: 401a, 401b, 401c, and 401d that are processed.
또한, 본 발명의 다른 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기(800)는 상기 일 실시 예에 따른 다중 주파수 대역을 지원하는 무선 주파수 수신기(700)와 동일하게 다중 주파수 대역의 송신하기 위해서 서비스 주파수 대역만큼 무선 주파수 송신기의 구성부들을 추가 배열할 필요가 없다.In addition, the radio frequency receiver 800 supporting the multi-frequency band according to another embodiment of the present invention transmits the multi-frequency band in the same manner as the radio frequency receiver 700 supporting the multi-frequency band according to the embodiment. There is no need to further arrange the components of the radio frequency transmitter as much as the service frequency band.
한편, 상기 장치의 각각의 구성요소들은 기능 및 논리적으로 분리될 수 있음을 나타나기 위해 별도로 도면에 표시한 것이며, 물리적으로 반드시 별도의 구성요소이거나 별도의 코드로 구현되는 것을 의미하는 것은 아니다.On the other hand, the respective components of the device are separately shown in the drawings to indicate that they can be functionally and logically separated, and do not necessarily mean that they are physically separate components or implemented in separate code.
그리고 본 명세서에서 각 기능부(또는 모듈)라 함은, 본 발명의 기술적 사상을 수행하기 위한 하드웨어 및 상기 하드웨어를 구동하기 위한 소프트웨어의 기능적, 구조적 결합을 의미할 수 있다. 예컨대, 상기 각 기능부는 소정의 코드와 상기 소정의 코드가 수행되기 위한 하드웨어 리소스의 논리적인 단위를 의미할 수 있으며, 반드시 물리적으로 연결된 코드를 의미하거나, 한 종류의 하드웨어를 의미하는 것은 아님은 본 발명의 기술분야의 평균적 전문가에게는 용이하게 추론될 수 있다.In this specification, each functional unit (or module) may mean a functional and structural combination of hardware for performing the technical idea of the present invention and software for driving the hardware. For example, each functional unit may mean a logical unit of a predetermined code and a hardware resource for performing the predetermined code, and does not necessarily mean a physically connected code or a kind of hardware. It can be easily inferred by the average expert in the art.
이상과 같이 본 발명에서는 구체적인 구성 요소 등과 같은 특정 사항들과 한정된 실시 예 및 도면에 의해 설명되었으나 이는 본 발명의 보다 전반적인 이해를 돕기 위해서 제공된 것일 뿐, 본 발명은 상기의 실시 예에 한정되는 것은 아니며, 본 발명이 속하는 분야에서 통상적인 지식을 가진 자라면 이러한 기재로부터 다양한 수정 및 변형이 가능하다.In the present invention as described above has been described by the specific embodiments, such as specific components and limited embodiments and drawings, but this is only provided to help a more general understanding of the present invention, the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations are possible from these descriptions.
따라서, 본 발명의 사상은 설명된 실시 예에 국한되어 정해져서는 아니 되며, 후술하는 특허청구범위뿐 아니라 이 특허청구범위와 균등하거나 등가적 변형이 있는 모든 것들은 본 발명 사상의 범주에 속한다고 할 것이다.Accordingly, the spirit of the present invention should not be limited to the described embodiments, and all of the equivalents and equivalents of the claims, as well as the appended claims, will belong to the scope of the present invention. .
[부호의 설명] [ Description of the Code ]
1: 다중 주파수 대역 처리부 2: 디지털/아날로그 신호 변환부1: Multi-Frequency Band Processing Unit 2: Digital / Analog Signal Converter
3: 무선 신호 처리부 4: 복수 개의 안테나3: wireless signal processor 4: a plurality of antennas
21: 디지털-아날로그 변환기 22: 아날로그-디지털 변환기21: digital to analog converter 22: analog to digital converter
31: 복수 개의 송신기 32: 복수 개의 수신기31: multiple transmitters 32: multiple receivers
33: 단일 송신기 34: 단일 수신기33: single transmitter 34: single receiver
301: 중간 주파수 신호 302: 중간 주파수 필터301: intermediate frequency signal 302: intermediate frequency filter
303: 국부발진기 304: LO주파수 신호303: local oscillator 304: LO frequency signal
305: 믹서 306: 저잡음 증폭기305: mixer 306: low noise amplifier
307: 송신 주파수 필터 308: 무선 주파수 신호307: transmission frequency filter 308: radio frequency signal
401: 합성 중간 주파수 402: 중간 주파수 필터401: synthetic intermediate frequency 402: intermediate frequency filter
403: 국부발진기 404: LO주파수 신호403: local oscillator 404: LO frequency signal
405: 믹서 406: 저잡음 증폭기405: mixer 406: low noise amplifier
407: 무선 주파수 408: 주파수결합기407: radio frequency 408: frequency combiner
409: 합성 LO주파수 신호 601: 밴드선택필터409: synthesized LO frequency signal 601: band select filter
602: 저잡음 증폭기 603: 이미지제거필터602: low noise amplifier 603: image rejection filter
604: 국부발진기 605: LO주파수 신호604: local oscillator 605: LO frequency signal
606: 믹서 607: 중간 주파수 증폭기606: mixer 607: intermediate frequency amplifier
608: 채널선택필터 702: 저잡음 증폭기608: channel selection filter 702: low noise amplifier
703: 이미지제거필터 704: 국부발진기703: image removal filter 704: local oscillator
705: LO주파수 신호 706: 믹서705: LO frequency signal 706: mixer
707: 중간 주파수 증폭기 708: 채널선택필터707: intermediate frequency amplifier 708: channel select filter

Claims (16)

  1. 복수 개의 중간 주파수 신호들을 합성하여 합성 중간 주파수 신호를 생성하고, 단일 경로를 통해 출력하는 디지털 아날로그 신호 변환기;A digital analog signal converter for synthesizing a plurality of intermediate frequency signals to generate a synthesized intermediate frequency signal and outputting the signal through a single path;
    상기 합성 중간 주파수 신호를 상기 단일 경로를 통해 전달받아 합성 무선 주파수 신호를 생성하는 믹서; 및A mixer configured to receive the synthesized intermediate frequency signal through the single path and generate a synthesized radio frequency signal; And
    상기 합성 무선 주파수 신호를 상기 단일 경로를 통해 전달받아 다중 주파수 별로 필터링하고, 복수 개의 무선 주파수 신호들로 출력하는 송신기;A transmitter for receiving the synthesized radio frequency signal through the single path and filtering for multiple frequencies and outputting a plurality of radio frequency signals;
    를 포함하는 다중 주파수 대역을 지원하는 무선 주파수 송신기.Radio frequency transmitter supporting multiple frequency bands including a.
  2. 제1항에 있어서, 상기 송신기는, The method of claim 1, wherein the transmitter,
    멀티밴드패스필터 방식의 복수 개의 송신용 밴드패스필터들을 포함하는 다중 주파수 대역을 지원하는 무선 주파수 송신기.A radio frequency transmitter supporting a multi frequency band including a plurality of transmission band pass filters of a multi band pass filter method.
  3. 제1항에 있어서, 상기 송신기는, The method of claim 1, wherein the transmitter,
    서로 다른 주파수의 LO주파수 신호들을 생성하여 상기 믹서로 단일 경로를 통해 공급하는 복수 개의 국부발진기들을 포함하는 다중 주파수 대역을 지원하는 무선 주파수 송신기.12. A radio frequency transmitter supporting multiple frequency bands comprising a plurality of local oscillators for generating LO frequency signals of different frequencies and feeding them to the mixer via a single path.
  4. 제3항에 있어서, 상기 송신기는,The method of claim 3, wherein the transmitter,
    상기 LO주파수 신호들을 합성하여 합성 LO주파수 신호를 생성하고, 상기 단일 경로를 통해 출력하는 주파수결합기를 포함하는 다중 주파수 대역을 지원하는 무선 주파수 송신기.And generating a synthesized LO frequency signal by synthesizing the LO frequency signals and outputting the synthesized LO frequency signal through the single path.
  5. 제4항에 있어서, 상기 송신기는,The method of claim 4, wherein the transmitter,
    상기 LO주파수 신호들로 상기 복수 개의 무선 주파수 신호들 간의 이격 거리를 조절할 수 있는 다중 주파수 대역을 지원하는 무선 주파수 송신기.And a multiple frequency band capable of adjusting a separation distance between the plurality of radio frequency signals with the LO frequency signals.
  6. 복수 개의 무선 주파수 신호들을 전달받아 다중 주파수 별로 필터링하고, 합성 무선 주파수 신호로 생성하여 단일 경로를 통해 출력하는 수신기;A receiver for receiving a plurality of radio frequency signals, filtering for multiple frequencies, generating a synthesized radio frequency signal, and outputting the same through a single path;
    상기 합성 무선 주파수 신호를 상기 단일 경로를 통해 전달받아 합성 중간 주파수 신호를 생성하는 믹서; 및A mixer configured to receive the synthesized radio frequency signal through the single path and generate a synthesized intermediate frequency signal; And
    상기 합성 중간 주파수 신호를 상기 단일 경로를 통해 전달받아 복수 개의 중간 주파수 신호들을 생성하고, 출력하는 아날로그 디지털 신호 변환기를 포함하는 다중 주파수 대역을 지원하는 무선 주파수 수신기.And an analog-digital signal converter configured to receive the synthesized intermediate frequency signal through the single path to generate and output a plurality of intermediate frequency signals.
  7. 제6항에 있어서, 상기 수신기는, The method of claim 6, wherein the receiver,
    멀티밴드패스필터 방식의 복수 개의 수신용 밴드선택필터들을 포함하는 다중 주파수 대역을 지원하는 무선 주파수 수신기.A radio frequency receiver supporting a multiple frequency band including a plurality of reception band selection filters of a multiband pass filter method.
  8. 제6항에 있어서, 상기 수신기는, The method of claim 6, wherein the receiver,
    서로 다른 주파수의 LO주파수 신호들을 생성하여 상기 믹서로 단일 경로를 통해 공급하는 복수 개의 국부발진기들을 포함하는 다중 주파수 대역을 지원하는 무선 주파수 수신기.A radio frequency receiver supporting a multiple frequency band comprising a plurality of local oscillators for generating LO frequency signals of different frequencies and supplying them to the mixer through a single path.
  9. 제8항에 있어서, 상기 수신기는,The method of claim 8, wherein the receiver,
    상기 LO주파수 신호들을 합성하여 합성 LO주파수 신호를 생성하고, 상기 단일 경로를 통해 출력하는 주파수결합기를 포함하는 다중 주파수 대역을 지원하는 무선 주파수 수신기.And a frequency combiner for synthesizing the LO frequency signals to generate a synthesized LO frequency signal and outputting the LO signal.
  10. 제9항에 있어서, 상기 수신기는,The method of claim 9, wherein the receiver,
    상기 LO주파수 신호들로 상기 복수 개의 중간 주파수 신호들 간의 이격 거리를 조절할 수 있는 다중 주파수 대역을 지원하는 무선 주파수 수신기.And a multiple frequency band capable of adjusting the separation distance between the plurality of intermediate frequency signals with the LO frequency signals.
  11. 복수 개의 중간 주파수 신호들과 상기 복수 개의 중간 주파수 신호들이 하나의 신호로 합성되어 생성된 합성 중간 주파수 신호 간의 상호 변환할 수 있는 디지털 아날로그 신호 변환부;A digital analog signal converting unit capable of converting a plurality of intermediate frequency signals and a synthesized intermediate frequency signal generated by combining the plurality of intermediate frequency signals into one signal;
    상기 합성 중간 주파수 신호와 합성 무선 주파수 신호 간의 상호 변환할 수 있는 믹서; 및A mixer capable of converting between the synthesized intermediate frequency signal and the synthesized radio frequency signal; And
    상기 합성 무선 주파수 신호와 복수 개의 무선 주파수 신호들 간의 상호 변환을 수행하는 무선 처리부를 포함하는 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기.And a radio processor configured to perform mutual conversion between the synthesized radio frequency signal and a plurality of radio frequency signals.
  12. 제11항에 있어서, 상기 합성 중간 주파수 신호와 상기 합성 무선 주파수 신호는12. The method of claim 11, wherein the composite intermediate frequency signal and the composite radio frequency signal are
    단일 경로를 통해 전달되는 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기.Radio frequency transmitters and receivers that support multiple frequency bands carried over a single path.
  13. 제11항에 있어서, 상기 무선 처리부는, The method of claim 11, wherein the wireless processing unit,
    멀티밴드패스필터 방식의 복수 개의 송신용 밴드패스필터들을 포함하는 송신기; 및A transmitter including a plurality of transmission band pass filters of a multi band pass filter method; And
    멀티밴드패스필터 방식의 복수 개의 수신용 밴드선택필터들을 포함하는 수신기를 포함하는 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기.A radio frequency transmitter and receiver supporting multiple frequency bands including a receiver including a plurality of reception band selection filters of a multiband pass filter method.
  14. 제11항에 있어서, 상기 무선 주파수 송신기 및 수신기는, The method of claim 11, wherein the radio frequency transmitter and receiver,
    서로 다른 주파수의 LO주파수 신호들을 생성하여 상기 믹서로 단일 경로를 통해 공급하는 복수 개의 국부발진기들을 포함하는 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기.A radio frequency transmitter and receiver supporting multiple frequency bands comprising a plurality of local oscillators for generating LO frequency signals of different frequencies and supplying them to the mixer through a single path.
  15. 제14항에 있어서, 상기 무선 주파수 송신기 및 수신기는,The method of claim 14, wherein the radio frequency transmitter and receiver,
    상기 LO주파수 신호들을 합성하여 합성 LO주파수 신호를 생성하고, 상기 단일 경로를 통해 출력하는 주파수결합기를 포함하는 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기.And a frequency combiner configured to synthesize the LO frequency signals to generate a synthesized LO frequency signal and output the synthesized LO frequency signal.
  16. 제15항에 있어서, 무선 주파수 송신기 및 수신기는,The method of claim 15, wherein the radio frequency transmitter and receiver,
    상기 LO주파수 신호들로 상기 복수 개의 중간 주파수 신호들 간의 이격 거리 또는 상기 복수 개의 중간 주파수 신호들 간의 이격 거리를 조절할 수 있는 다중 주파수 대역을 지원하는 무선 주파수 송신기 및 수신기.And a multiple frequency band capable of adjusting the separation distance between the plurality of intermediate frequency signals or the separation distance between the plurality of intermediate frequency signals with the LO frequency signals.
PCT/KR2014/009328 2014-10-02 2014-10-02 Wireless frequency transmitter and receiver supporting multi-frequency band WO2016052786A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110268774A (en) * 2017-01-20 2019-09-20 谐振公司 Use the communication control processor of multiple band transmission block filter
CN115913122A (en) * 2023-01-09 2023-04-04 北京思信飞扬信息技术股份有限公司 Method and system for generating radio frequency signal

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6529488B1 (en) * 1998-08-18 2003-03-04 Motorola, Inc. Multiple frequency allocation radio frequency device and method
US20060067426A1 (en) * 2004-09-28 2006-03-30 Maltsev Alexander A Multicarrier transmitter and methods for generating multicarrier communication signals with power amplifier predistortion and linearization
US20120044975A1 (en) * 2010-08-19 2012-02-23 Industrial Technology Research Institute Multi-carrier receiver, multi-carrier transmitter and multi-carrier transceiver system
US8374570B2 (en) * 2004-12-10 2013-02-12 Maxlinear, Inc. Harmonic reject receiver architecture and mixer
EP1492228B1 (en) * 2003-06-24 2014-01-08 Northrop Grumman Systems Corporation Multi-mode multi-amplifier architecture

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6529488B1 (en) * 1998-08-18 2003-03-04 Motorola, Inc. Multiple frequency allocation radio frequency device and method
EP1492228B1 (en) * 2003-06-24 2014-01-08 Northrop Grumman Systems Corporation Multi-mode multi-amplifier architecture
US20060067426A1 (en) * 2004-09-28 2006-03-30 Maltsev Alexander A Multicarrier transmitter and methods for generating multicarrier communication signals with power amplifier predistortion and linearization
US8374570B2 (en) * 2004-12-10 2013-02-12 Maxlinear, Inc. Harmonic reject receiver architecture and mixer
US20120044975A1 (en) * 2010-08-19 2012-02-23 Industrial Technology Research Institute Multi-carrier receiver, multi-carrier transmitter and multi-carrier transceiver system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110268774A (en) * 2017-01-20 2019-09-20 谐振公司 Use the communication control processor of multiple band transmission block filter
CN110268774B (en) * 2017-01-20 2021-06-04 谐振公司 Communication receiver using multi-band transmission blocking filter
CN115913122A (en) * 2023-01-09 2023-04-04 北京思信飞扬信息技术股份有限公司 Method and system for generating radio frequency signal

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