CN206585548U - A kind of device and receiver for realizing rf modulated signal processing - Google Patents
A kind of device and receiver for realizing rf modulated signal processing Download PDFInfo
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Abstract
A kind of device and receiver for realizing rf modulated signal processing, including：First low-noise amplifier is used for, and processing is amplified to the rf modulated signal received；Power distributing unit includes the second low-noise amplifier and RF switch of preset group number, for carrying out power distribution processing to the rf modulated signal for completing enhanced processing respectively by the low-noise amplifier of each group second and RF switch；Wherein, power distributing unit is integrated in radio frequency chip；Dependent processing unit is used for, and will complete the rf modulated signal of power distribution processing, carries out relevant treatment by the radio frequency interlock circuit of each signalling channel and/or system respectively.The utility model embodiment passes through the second low-noise amplifier and RF switch of the preset group number for corresponding to each signalling channel and/or system being integrated in radio frequency chip, on the premise of isolation is ensured, realize the power distribution processing of multiple signal channels and/or system, the size of circuit is reduced, the integrated level of circuit is improved.
Description
Technical Field
The present disclosure relates to, but not limited to, radio frequency communication technologies, and more particularly, to an apparatus and a receiver for processing a radio frequency modulated signal.
Background
In a radio frequency receiver, a low noise amplifier and a power divider are two main elements for processing a received radio frequency modulation signal; among them, a Low Noise Amplifier (LNA) is a first-stage gain stage circuit of a radio receiver, which must satisfy a plurality of performance requirements at the same time, and mainly includes: 1. radio frequency signals received by an antenna are generally very weak, and subsequent circuits (such as a mixer) of an LNA (low-noise amplifier) cannot achieve high gain and low noise, so that the LNA must meet certain gain requirements; 2. in order to improve the reliability of signal demodulation, the received signal needs to have a certain signal-to-noise ratio (SNR), which requires that the noise introduced by the LNA itself is as small as possible. In summary, the LNA design needs to compromise between Noise Figure (NF), gain, linearity, and power consumption, that is, under a certain power consumption limit, the LNA needs to obtain optimal noise performance and input matching, and simultaneously can satisfy the requirements of gain and linearity. Therefore, the design of the LNA is a difficult problem in the design of the rf circuit. A power splitter (power splitter for short) is a device that splits one path of input signal energy into two or more paths of output equal or unequal energy; conversely, a circuit for combining multiple signal energies into one output is called a combiner. Certain isolation degree should be guaranteed between output ports of one power divider. The power divider is generally divided into two-in-one (one input and two outputs), three-in-one (one input and three outputs), and the like according to the output.
Fig. 1 is a system architecture of a related art rf receiver, as shown in fig. 1, a rf modulated signal is received by an antenna (not shown) through an rf input port into a signal path; after a received radio frequency modulation signal is amplified by a Low Noise Amplifier (LNA) at the front end, the radio frequency modulation signal is further amplified by a radio frequency preamplifier (RFA) which is connected back to the inside of the chip through a power divider outside the chip, the signal amplified by the RFA is transmitted to a down converter (MIXER) for processing, channel selection is carried out on the intermediate frequency signal by an intermediate frequency Filter (IF Filter), and the intermediate frequency signal which needs to be demodulated in bandwidth is filtered; amplifying the filtered intermediate frequency signal by an adjustable gain amplifier (VGA), and providing the amplified intermediate frequency signal meeting the signal intensity requirement to an analog-to-digital converter (ADC), wherein the ADC converts the intermediate frequency signal from an analog signal to a digital signal; and the digital signal obtained by conversion is processed by a digital baseband.
In the above circuit structure, in order to ensure a certain degree of isolation between the output ports of the power divider, a ceramic power divider is generally selected, and the ceramic power divider cannot simultaneously process radio frequency modulation signals of multiple channels or multiple systems because of large gain attenuation.
SUMMERY OF THE UTILITY MODEL
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The embodiment of the utility model provides a realize device and receiver that radio frequency modulation signal handled can realize the processing of the radio frequency modulation signal of a plurality of passageways or system under the condition of guaranteeing the isolation.
The embodiment of the utility model provides a realize radio frequency modulation signal processing's device, include: the device comprises a first low noise amplifier, a power distribution unit and a related processing unit; wherein,
the first low noise amplifier is used for amplifying the received radio frequency modulation signal;
the power distribution unit comprises second low noise amplifiers and radio frequency switches corresponding to preset groups of signal channels and/or systems and is used for respectively carrying out power distribution processing on the radio frequency modulation signals subjected to amplification processing through the second low noise amplifiers and the radio frequency switches; wherein the power distribution unit is integrated in a radio frequency chip;
the relevant processing unit is used for respectively carrying out relevant processing on the radio frequency modulation signals subjected to the power distribution processing through the radio frequency relevant circuits of each signal channel and/or system.
Optionally, the power allocating unit is configured to perform power allocating processing, and includes:
and performing gain distribution and/or gain adjustment on the radio frequency modulation signal subjected to the amplification processing according to the signal channel and/or system parameters.
Optionally, the first low noise amplifier is integrated in the radio frequency chip.
Optionally, the relevant processing unit includes: a radio frequency preamplifier RFA, a down converter MIXER, an intermediate frequency filter, an adjustable gain amplifier VGA, and/or an analog-to-digital converter ADC corresponding to each signal channel and/or system.
Optionally, the relevant processing unit is specifically configured to:
the RF modulated signal having completed the power distribution process is subjected to correlation processing by RFA, MIXER, IF filter, VGA, and/or ADC corresponding to each signal channel and/or system.
On the other hand, the embodiment of the utility model provides a still provide a receiver, include above-mentioned device.
Compared with the related art, the technical scheme of the application comprises the following steps: the device comprises a first low noise amplifier, a power distribution unit and a related processing unit; the first low noise amplifier is used for amplifying the received radio frequency modulation signal; the power distribution unit comprises second low noise amplifiers and radio frequency switches corresponding to preset groups of signal channels and/or systems and is used for respectively carrying out power distribution processing on the radio frequency modulation signals subjected to amplification processing through the second low noise amplifiers and the radio frequency switches; the power distribution unit is integrated in the radio frequency chip; the relevant processing unit is used for respectively carrying out relevant processing on the radio frequency modulation signals subjected to the power distribution processing through the radio frequency relevant circuits of each signal channel and/or system. The embodiment of the utility model provides a through second low noise amplifier and the radio frequency switch of the predetermined group number corresponding to each signal channel and/or system of integration in radio frequency chip, under the prerequisite of guaranteeing the isolation, realized multichannel signal channel and/or system's power distribution and handled, reduced the size of circuit, promoted the integrated level of circuit.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention and not to limit the embodiments of the invention.
Fig. 1 is a system architecture of a related art rf receiver;
fig. 2 is a block diagram of an apparatus for implementing rf modulation signal processing according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a power distribution unit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following description of the embodiments of the present invention with reference to the accompanying drawings is needed to explain that the features in the embodiments and the embodiments of the present invention can be arbitrarily combined with each other without conflict.
Fig. 2 is a block diagram of a structure of an apparatus for implementing rf modulation signal processing according to an embodiment of the present invention, as shown in fig. 2, including: the device comprises a first low noise amplifier, a power distribution unit and a related processing unit; wherein,
the first low noise amplifier is used for amplifying the received radio frequency modulation signal;
optionally, the first low noise amplifier of the embodiment of the present invention is integrated in the radio frequency chip.
It should be noted that, because there is gain attenuation in the power divider among the correlation technique, consequently, the gain requirement of the low noise amplifier who amplifies the processing to receiving radio frequency modulation signal is higher, the embodiment of the utility model provides a carry out power distribution by integrated second low noise amplifier and the radio frequency switch in the radio frequency chip and handle, belong to active power distribution circuit structure, do not have gain attenuation, consequently, the embodiment of the utility model provides a gain requirement to first low noise amplifier correspondingly reduces. Additionally, the embodiment of the utility model provides an integrate first low noise amplifier in radio frequency chip, further reduced circuit design's complexity and circuit noise's influence, promoted radio frequency chip's integrated level, reduced radio frequency chip's cost and size.
The power distribution unit comprises second low noise amplifiers and radio frequency switches corresponding to preset groups of signal channels and/or systems and is used for respectively carrying out power distribution processing on the radio frequency modulation signals subjected to amplification processing through the second low noise amplifiers and the radio frequency switches; wherein the power distribution unit is integrated in a radio frequency chip;
it should be noted that, the embodiment of the present invention performs power distribution processing through the second low noise amplifiers and the radio frequency switches corresponding to the preset number of groups of each signal channel and/or system; the number of the second low noise amplifiers and the radio frequency switches can be determined according to the number of the signal channels and/or the number of the system, namely when the signal channels comprise a first number of signal channels, the embodiment of the utility model can be used for setting a first number of the second low noise amplifiers and the radio frequency switches; when a second number of systems are included, the embodiment of the utility model can be provided with a second number of groups of second low noise amplifiers and radio frequency switches; if the signal channels and the system are simultaneously contained, the number of the second low noise amplifier and the radio frequency switch can be determined by accumulating according to the number of the signal channels and the number of the system. The embodiment of the utility model provides a second low noise amplifier and the radio frequency switch of integration in the radio frequency chip do not have extra power consumption as active power divider; the radio frequency switch ensures the isolation between each signal channel and/or system, and the second low noise amplifier realizes the power distribution adjustment; in addition, the embodiment of the utility model provides a, second low noise amplifier and radio frequency switch are integrated in the radio frequency chip, have reduced circuit complexity, manufacturing cost and size, have promoted the integrated level of circuit; because the second low noise amplifier and the radio frequency switch have no gain attenuation, the power distribution processing of the radio frequency modulation signals of the multi-path signal channels and/or the system can be realized.
Fig. 3 is a schematic structural diagram of a power distribution unit according to an embodiment of the present invention, as shown in fig. 3, the power distribution unit is connected to a first low noise amplifier, each is connected to a second low noise amplifier of a signal channel or a system, a radio frequency switch is disposed before and after the circuit is accessed, and the number of paths of the second low noise amplifiers and the number of signal channels or systems form a one-to-one correspondence relationship. The radio frequency switch ensures the isolation of the system, and the second low noise amplifier can realize gain distribution and/or gain adjustment.
Optionally, the utility model provides a power distribution unit is used for carrying out power distribution and handles including:
and performing gain distribution and/or gain adjustment on the radio frequency modulation signal subjected to the amplification processing according to the signal channel and/or system parameters.
The relevant processing unit is used for respectively carrying out relevant processing on the radio frequency modulation signals subjected to the power distribution processing through the radio frequency relevant circuits of each signal channel and/or system.
Optionally, the embodiment of the present invention provides a related processing unit including: a radio frequency preamplifier (RFA), a down converter (MIXER), an intermediate frequency filter, a Variable Gain Amplifier (VGA), and/or an analog-to-digital converter (ADC) corresponding to each signal channel and/or system.
Optionally, the relevant processing unit is specifically configured to:
the RF modulated signal having completed the power distribution process is subjected to correlation processing by RFA, MIXER, IF filter, VGA, and/or ADC corresponding to each signal channel and/or system.
It should be noted that, the processing procedure after the power allocation is completed in the embodiment of the present invention is the same as the processing procedure of the receiver in the related art, and after the intermediate frequency analog signal is converted into the digital signal by the analog-to-digital converter, the signal processing is performed in the digital baseband according to the existing signal processing method.
The embodiment of the utility model provides a still provide a receiver, include: the device comprises a first low noise amplifier, a power distribution unit and a related processing unit; wherein,
the first low noise amplifier is used for amplifying the received radio frequency modulation signal;
optionally, the first low noise amplifier of the embodiment of the present invention is integrated in the radio frequency chip.
It should be noted that, because there is gain attenuation in the power divider among the correlation technique, consequently, the gain requirement of the low noise amplifier who amplifies the processing to receiving radio frequency modulation signal is higher, the embodiment of the utility model provides a carry out power distribution by integrated second low noise amplifier and the radio frequency switch in the radio frequency chip and handle, belong to active power distribution circuit structure, do not have gain attenuation, consequently, the embodiment of the utility model provides a gain requirement to first low noise amplifier correspondingly reduces. Additionally, the embodiment of the utility model provides an integrate first low noise amplifier in radio frequency chip, further reduced circuit design's complexity and circuit noise's influence, promoted radio frequency chip's integrated level, reduced radio frequency chip's cost and size.
The power distribution unit comprises second low noise amplifiers and radio frequency switches corresponding to preset groups of signal channels and/or systems and is used for respectively carrying out power distribution processing on the radio frequency modulation signals subjected to amplification processing through the second low noise amplifiers and the radio frequency switches; wherein the power distribution unit is integrated in a radio frequency chip;
it should be noted that, the embodiment of the present invention performs power distribution processing through the second low noise amplifiers and the radio frequency switches corresponding to the preset number of groups of each signal channel and/or system; the number of the second low noise amplifiers and the radio frequency switches can be determined according to the number of the signal channels and/or the number of the system, namely when the signal channels comprise a first number of signal channels, the embodiment of the utility model can be used for setting a first number of the second low noise amplifiers and the radio frequency switches; when a second number of systems are included, the embodiment of the utility model can be provided with a second number of groups of second low noise amplifiers and radio frequency switches; if the signal channels and the system are simultaneously contained, the number of the second low noise amplifier and the radio frequency switch can be determined by accumulating according to the number of the signal channels and the number of the system. The embodiment of the utility model provides a second low noise amplifier and the radio frequency switch of integration in the radio frequency chip do not have extra power consumption as active power divider; the radio frequency switch ensures the isolation between each signal channel and/or system, and the second low noise amplifier realizes the power distribution adjustment; in addition, the embodiment of the utility model provides a, second low noise amplifier and radio frequency switch are integrated in the radio frequency chip, have reduced circuit complexity, manufacturing cost and size, have promoted the integrated level of circuit; because the second low noise amplifier and the radio frequency switch have no gain attenuation, the power distribution processing of the radio frequency modulation signals of the multi-path signal channels and/or the system can be realized.
Optionally, the utility model provides a power distribution unit is used for carrying out power distribution and handles including:
and performing gain distribution and/or gain adjustment on the radio frequency modulation signal subjected to the amplification processing according to the signal channel and/or system parameters.
The relevant processing unit is used for respectively carrying out relevant processing on the radio frequency modulation signals subjected to the power distribution processing through the radio frequency relevant circuits of each signal channel and/or system.
Optionally, the embodiment of the present invention provides a related processing unit including: a radio frequency preamplifier (RFA), a down converter (MIXER), an intermediate frequency filter, a Variable Gain Amplifier (VGA), and/or an analog-to-digital converter (ADC) corresponding to each signal channel and/or system.
Optionally, the relevant processing unit is specifically configured to:
the RF modulated signal having completed the power distribution process is subjected to correlation processing by RFA, MIXER, IF filter, VGA, and/or ADC corresponding to each signal channel and/or system.
It should be noted that, the processing procedure after the power allocation is completed in the embodiment of the present invention is the same as the processing procedure of the receiver in the related art, and after the intermediate frequency analog signal is converted into the digital signal by the analog-to-digital converter, the signal processing is performed in the digital baseband according to the existing signal processing method.
Although the embodiments of the present invention are described above, the contents thereof are merely embodiments adopted to facilitate understanding of the technical aspects of the present invention, and are not intended to limit the present invention. Any person skilled in the art can make any modifications and changes in the form and details of the implementation without departing from the core technical solution disclosed in the present invention, but the scope of protection defined by the present invention must still be subject to the scope defined by the appended claims.
Claims (6)
1. An apparatus for implementing rf modulated signal processing, comprising: the device comprises a first low noise amplifier, a power distribution unit and a related processing unit; wherein,
the first low noise amplifier is used for amplifying the received radio frequency modulation signal;
the power distribution unit comprises second low noise amplifiers and radio frequency switches corresponding to preset groups of signal channels and/or systems and is used for respectively carrying out power distribution processing on the radio frequency modulation signals subjected to amplification processing through the second low noise amplifiers and the radio frequency switches; wherein the power distribution unit is integrated in a radio frequency chip;
the relevant processing unit is used for respectively carrying out relevant processing on the radio frequency modulation signals subjected to the power distribution processing through the radio frequency relevant circuits of each signal channel and/or system.
2. The apparatus of claim 1, wherein the power allocation unit is configured to perform power allocation processing and comprises:
and performing gain distribution and/or gain adjustment on the radio frequency modulation signal subjected to the amplification processing according to the signal channel and/or system parameters.
3. The apparatus of claim 1, wherein the first low noise amplifier is integrated in the radio frequency chip.
4. The apparatus according to any one of claims 1 to 3, wherein the correlation processing unit comprises: a radio frequency preamplifier RFA, a down converter MIXER, an intermediate frequency filter, an adjustable gain amplifier VGA, and/or an analog-to-digital converter ADC corresponding to each signal channel and/or system.
5. The apparatus according to claim 4, wherein the correlation processing unit is specifically configured to:
the RF modulated signal having completed the power distribution process is subjected to correlation processing by RFA, MIXER, IF filter, VGA, and/or ADC corresponding to each signal channel and/or system.
6. A receiver comprising the apparatus of any of claims 1-5.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106899317A (en) * | 2017-02-21 | 2017-06-27 | 和芯星通科技(北京)有限公司 | A kind of method for realizing rf modulated signal treatment, device and receiver |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106899317A (en) * | 2017-02-21 | 2017-06-27 | 和芯星通科技(北京)有限公司 | A kind of method for realizing rf modulated signal treatment, device and receiver |
| CN106899317B (en) * | 2017-02-21 | 2022-04-29 | 和芯星通科技(北京)有限公司 | Method, device and receiver for realizing radio frequency modulation signal processing |
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