CN217546043U - Ka frequency channel frequency conversion receiving and dispatching subassembly - Google Patents
Ka frequency channel frequency conversion receiving and dispatching subassembly Download PDFInfo
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- CN217546043U CN217546043U CN202220731766.7U CN202220731766U CN217546043U CN 217546043 U CN217546043 U CN 217546043U CN 202220731766 U CN202220731766 U CN 202220731766U CN 217546043 U CN217546043 U CN 217546043U
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Abstract
The utility model relates to the technical field of electronic communication, and discloses a Ka frequency band frequency conversion transceiving component, which comprises a power supply processing circuit module, a digital control circuit module, a clock circuit module, a receiving down-conversion channel module and a transmitting up-conversion channel module; the power supply processing circuit module is connected with the digital control circuit module, the clock circuit module, the receiving down-conversion channel module and the transmitting up-conversion channel module through links; the power supply processing circuit module is used for providing different voltages for the digital control circuit module, the clock circuit module, the receiving down-conversion channel module and the transmitting up-conversion channel module; the clock circuit module is used for providing local oscillation signals for the receiving down-conversion channel module and the transmitting up-conversion channel module; the receiving down-conversion channel module is used for receiving radio frequency signals; and the transmitting up-conversion channel module is used for receiving the intermediate frequency signal sent by the down-conversion channel module and outputting a radio frequency signal.
Description
Technical Field
The utility model belongs to the technical field of the electronic communication technique and specifically relates to a Ka frequency channel frequency conversion receiving and dispatching subassembly.
Background
The performance of the frequency conversion transceiving component, which is a vital component of a wireless transceiving system, has a direct influence on the whole communication system. The radio frequency front end receiving and transmitting component mainly processes a high-frequency signal part between an antenna end and a digital processing module and is mainly divided into a receiving channel and a transmitting channel according to functions of the receiving channel, the receiving channel mainly functions to convert a high-frequency signal received by the antenna end into a low-frequency signal through down-conversion processing and deliver the low-frequency signal to the digital processing module, and the transmitting channel mainly functions to convert a baseband signal to be transmitted into a high-frequency signal through up-conversion processing and deliver the high-frequency signal to an antenna for transmission.
At present, the radio frequency front end receiving and transmitting assembly is widely applied to national defense engineering and mainly comprises Ka, ku and S frequency bands. The radio frequency integrated circuit field of the frequency band has been developed greatly in China, and all the equipment far leads us. Therefore, in the fields of wireless communication systems and radar systems of Ka frequency bands, the research and design work of the radio frequency front-end receiving and transmitting assembly with high performance, high index and low cost has great significance. Therefore, the application provides a Ka frequency band frequency conversion transceiving component.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a Ka frequency channel frequency conversion receiving and dispatching subassembly has high performance, high index, low-cost effect.
The utility model discloses a following technical scheme realizes: a Ka frequency band frequency conversion transceiving component comprises a power supply processing circuit module, a digital control circuit module, a clock circuit module, a receiving down-conversion channel module and a transmitting up-conversion channel module;
the power supply processing circuit module is in link connection with the digital control circuit module, the clock circuit module, the receiving down-conversion channel module and the transmitting up-conversion channel module;
the receiving down-conversion channel module comprises a primary receiving frequency conversion unit and a secondary receiving frequency conversion unit, and the primary receiving frequency conversion unit is connected with the secondary receiving frequency conversion unit through an amplifier;
the transmitting up-conversion channel module comprises a primary transmitting frequency conversion unit and a secondary transmitting frequency conversion unit, and the primary transmitting frequency conversion unit is connected with the secondary transmitting frequency conversion unit through an amplifier;
the power supply processing circuit module is used for providing different voltages for the digital control circuit module, the clock circuit module, the receiving down-conversion channel module and the transmitting up-conversion channel module;
the clock circuit module is used for providing local oscillation signals for the receiving down-conversion channel module and the transmitting up-conversion channel module;
the receiving down-conversion channel module is used for receiving radio-frequency signals, performing low-noise amplification processing on the radio-frequency signals, performing filtering processing and frequency conversion on the radio-frequency signals through the primary receiving frequency conversion unit and the secondary receiving frequency conversion unit, outputting intermediate-frequency signals after intermediate-frequency amplification, and sending the intermediate-frequency signals to the transmitting up-conversion channel module;
the transmitting up-conversion channel module is used for receiving the intermediate frequency signal sent by the receiving down-conversion channel module, and performing twice frequency conversion filtering and amplification on the intermediate frequency signal in a transmitting channel of the transmitting up-conversion channel module through the primary transmitting frequency conversion unit and the secondary transmitting frequency conversion unit to output a radio frequency signal.
In order to better realize the utility model, further, the receiving down-conversion channel module comprises the primary receiving frequency conversion unit, the secondary receiving frequency conversion unit, an image frequency filter, a numerical control attenuator, an amplifier D1, an amplifier D2 and an amplifier D3;
the primary receiving frequency conversion unit comprises a first receiving mixer, a filter IF _ R1 and a broadband synthesizer Lo _ R1, wherein the filter IF _ R1 and the broadband synthesizer Lo _ R1 are respectively connected with the first receiving mixer;
the secondary receiving frequency conversion unit comprises a second receiving mixer, a filter IF _ R2 and a broadband synthesizer Lo _ R2, and the filter IF _ R2 and the broadband synthesizer Lo _ R2 are respectively connected with the second receiving mixer;
and the amplifier D1 is sequentially connected with the image frequency filter, the primary receiving frequency conversion unit, the amplifier D2, the secondary receiving frequency conversion unit, the amplifier D3 and the digital control attenuator in a link way.
In order to better realize the utility model, further, the transmission up-conversion channel module comprises a primary transmission frequency conversion unit, a secondary transmission frequency conversion unit, a numerical control attenuator, a sideband filter, a broadband synthesizer Lo _ R2, an amplifier D4, an amplifier D5, an amplifier D6 and an amplifier D7;
the primary transmitting frequency conversion unit comprises a first transmitting mixer, a filter IF _ T1 and a broadband synthesizer Lo _ T1, wherein the filter IF _ T1 and the broadband synthesizer Lo _ T1 are respectively connected with the first transmitting mixer;
the second transmitting frequency conversion unit comprises a second transmitting mixer, a filter IF _ T2 and a broadband synthesizer Lo _ T2, the filter IF _ T2 and the broadband synthesizer Lo _ T2 are respectively connected with the second transmitting mixer;
and the numerical control attenuator is sequentially connected with the amplifier D4, the primary transmitting frequency conversion unit, the amplifier D5, the secondary transmitting frequency conversion unit, the amplifier D6 and the amplifier D7 in a link way.
In order to better implement the present invention, further, the amplifier D6 is a driving amplifier.
In order to better implement the present invention, further, the clock circuit module is respectively connected to the receiving down-conversion channel module and the transmitting up-conversion channel module;
the clock circuit module comprises a power divider, and is used for dividing received signals into four local oscillation signals through the power divider, and respectively sending the local oscillation signals to the broadband synthesizer Lo _ R1, the broadband synthesizer Lo _ R2, the broadband synthesizer Lo _ T1 and the broadband synthesizer Lo _ T2.
In order to better implement the present invention, further, the digital control circuit module includes an ARM chip with model number HWD32F103E-LQFP 64.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
(1) The utility model provides a Ka frequency channel frequency conversion receiving and dispatching subassembly with high performance, high index, low cost.
Drawings
The present invention will be further explained with reference to the following drawings and examples, and all the innovative ideas of the present invention shall be considered as the disclosure and the protection scope of the present invention.
Fig. 1 is the utility model provides a structure diagram between receiving down conversion channel module and the transmission up conversion channel module of Ka frequency channel frequency conversion receiving and dispatching subassembly.
Fig. 2 is the utility model provides a power supply processing circuit module's of Ka frequency channel frequency conversion receiving and dispatching subassembly schematic structure diagram.
Fig. 3 is a schematic structural diagram of a receiving down-conversion channel module of a Ka frequency band frequency conversion transceiving module according to the present invention.
Fig. 4 is the utility model provides a pair of Ka frequency channel frequency conversion transceiver module's transmission up-conversion channel module's structural schematic.
Fig. 5 is a schematic structural diagram of a clock circuit module of the Ka frequency band frequency conversion transceiving module provided by the present invention.
Fig. 6 is a schematic structural diagram of a digital control circuit module of the Ka frequency band frequency conversion transceiving module provided by the present invention.
Fig. 7 is a schematic structural diagram of a Ka frequency band frequency conversion transceiving module provided by the present invention.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments, and therefore should not be considered as limitations to the scope of protection. Based on the embodiments in the present invention, all other embodiments obtained by the staff of ordinary skill in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through an intermediary, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
as shown in fig. 1 to 7, the implementation principle of the Ka band frequency conversion transceiving module provided in this embodiment is as follows: the receiving down-conversion channel module receives signals, amplifies and filters the signals through image frequency, then carries out frequency conversion twice, and outputs required intermediate frequency signals through a numerical control attenuator; the transmitting up-conversion channel module transmits an intermediate frequency signal, performs numerical control attenuation amplification and filtering on the intermediate frequency signal, and outputs a radio frequency signal through twice frequency conversion.
Example 2:
in this embodiment, further optimization is performed on the basis of embodiment 1, as shown in fig. 3, the working principle of the receiving down-conversion channel module is as follows:
the receiving down-conversion channel module receives radio frequency signals of 27.5GHz to 31.5GHz input from an antenna, the radio frequency signals are subjected to low noise amplification and filtering processing after passing through a filter and an amplitude limiter, frequency conversion and intermediate frequency amplification are carried out, and finally signals with the central frequency of 2.6GHz and the bandwidths of 36MHz and 125MHz are output. The receiving down-conversion channel module comprises an amplifier, an intermediate frequency filter and a mixer. Specifically, the receiving down-conversion channel module includes a primary receiving frequency conversion unit and a secondary receiving frequency conversion unit, the primary receiving frequency conversion unit is connected with the secondary receiving frequency conversion unit through an amplifier, and the primary receiving frequency conversion unit includes a first receiving mixer, a filter IF _ R1 and a broadband synthesizer Lo _ R1. The secondary receiving frequency conversion unit comprises a second receiving mixer, a filter IF _ R2 and a broadband synthesizer Lo _ R2.
An amplifier:
the amplifier of the receive down-conversion channel module in this embodiment selects the low noise amplifier.
The first-stage amplifier of the receiving frequency conversion channel module is a low-noise amplifier, namely, the first amplifier D1 used for receiving signals for the first time is an HGC344 amplifier with the height of the Chinese traditional ocean, the noise coefficient is 1.9dB, and the gain is 20dB. The signal passes through a first amplifier D1 and then passes through an image frequency filter to a primary receiving frequency conversion unit.
The receiving frequency conversion channel module carries out first frequency mixing on a primary receiving frequency conversion unit:
the receiving frequency conversion channel module enables the radio frequency signals 27.5GHz to 31.5GHz to be finally frequency-converted to output 2.6GHz signals by adopting a twice frequency conversion mode, the local oscillation signals transmitted from the broadband synthesizer Lo _ R1 by the clock circuit module are received by first frequency mixing, and the local oscillation signals 21.5GHz to 25.5GHz and the radio frequency signals are mixed by the first frequency mixing to output intermediate frequency signals 6 GHz. The first receiving mixer in the primary receiving frequency conversion unit adopts HMC292, and the mixing gain is-9 dB. After the first time of frequency mixing, the corresponding intermediate frequency filter IF _ R1 is selected according to the output intermediate frequency signal for filtering, the intermediate frequency filter can effectively inhibit mixed frequency spurious and image frequency corresponding to the intermediate frequency, the amplified intermediate frequency filter enters a secondary receiving frequency conversion unit for second time of frequency mixing, a low local oscillator is also adopted in the second time of frequency mixing, and the second receiving frequency mixer adopts HMC787.
The receiving frequency conversion channel module carries out second frequency mixing on the secondary receiving frequency conversion unit:
the mixer adopted by the second mixing is HMC787, the isolation between the radio frequency signal and the local oscillation signal is 55dB, and the frequency conversion gain is-10 dB. In the second mixing, a local oscillation signal 3.4GHz transmitted by a broadband synthesizer Lo _ R2 is mixed with a 6GHz intermediate frequency signal by a clock circuit module, the 2.6GHz intermediate frequency signal is output, the output 2.6GHz intermediate frequency signal passes through two filters with different bandwidths through a switch, the bandwidths of the two filters are respectively 36MHz and 125MHz, the intermediate frequency signal is finally output after attenuation, amplification and filtering, wherein numerical control attenuation is respectively at the intermediate frequency output before primary mixing, and the numerical control attenuation at the intermediate frequency output is HMC792.
In addition, in this embodiment, the types of devices selected by the receiving frequency conversion channel module are all marked in fig. 3.
Other parts of this embodiment are the same as embodiment 1, and thus are not described again.
Example 3:
this embodiment is further optimized on the basis of the above embodiment 1 or 2, and as shown in fig. 4, the working principle of the transmit up-conversion channel module is as follows:
and the intermediate frequency signal passes through a transmitting channel of the transmitting up-conversion channel module, is subjected to frequency conversion filtering and amplification twice, and finally outputs a radio frequency signal of 17.7 to 21.2GHz. The transmitting up-conversion channel module comprises a primary transmitting frequency conversion unit and a secondary transmitting frequency conversion unit, and the primary transmitting frequency conversion unit is connected with the secondary transmitting frequency conversion unit through a fifth amplifier D5. The primary transmitting frequency conversion unit comprises a first transmitting mixer, a filter IF _ T1 and a broadband synthesizer Lo _ T1; the second-time transmitting frequency conversion unit comprises a second transmitting mixer, a filter IF _ T2 and a broadband synthesizer Lo _ T2.
And a fourth amplifier D4 of the transmitting up-conversion channel module adopts a low-noise amplifier, the fourth amplifier D4 is TQP3M9008, the gain of the amplifier is 20dB, and the noise coefficient is 1.3dB. After the signal is transmitted from the digital control attenuator, the signal enters a fourth amplifier D4 of the transmitting up-conversion channel module and is transmitted to the primary transmitting frequency conversion unit.
First mixing of the transmit up-conversion channel module:
the first mixing is carried out by mixing local oscillation signals of 2.6GHz and 4GHz at intermediate frequency to output 6.6GHz radio frequency signals, the first transmitting mixer adopts HMC787, the first mixing is consistent with the second receiving mixer of the receiving frequency conversion channel, the first mixing output signal of the transmitting frequency conversion channel module is 6.6GHz, the selected fifth amplifier D5 is PMA3-83LN +, the gain of the amplifier is 20dB, and the gain of the amplifier is 18dB.
And transmitting second mixing of the up-conversion channel module:
and performing second frequency mixing of the transmitting up-conversion channel module, performing up-conversion on a 6.6GHz signal and 11.1GHz to 14.6GHz local oscillation signals to output 17.7GHz to 21.2GHz radio-frequency signals, wherein a second transmitting frequency mixer adopted in the second frequency mixing is HMC773, and the frequency conversion gain is-10 dB.
The sixth amplifier D6 selected by the transmit up-conversion channel module is a driving amplifier:
in order to meet the index that the saturated output power of a transmitting channel is larger than or equal to 30dBm, a first-stage driving amplifier, namely a sixth amplifier D6, is added in front of a final-stage amplifier, namely a seventh amplifier D7, the selected driving amplifier is HMC442, the gain of the amplifier is 15dB, and the P-1 is 21dB.
The final amplifier selected by the transmit up-conversion channel module, namely a seventh amplifier D7:
the final amplifier, the seventh amplifier D7, ensures the saturated output power of the transmit channel, and is selected to be HMC998, the amplifier gain is 12dB, the P-1 power is 30dBm, and the saturated output power Psat is 33dBm.
In addition, in the present embodiment, the types of devices selected by the transmit up-conversion channel module are labeled in fig. 4.
Other parts of this embodiment are the same as those of embodiment 1 or 2, and thus are not described again.
Example 4:
in this embodiment, as shown in fig. 2, in the power supply processing design, the following steps are further optimized based on any one of embodiments 1 to 3: the module supplies power to be direct current 12V input, 12V conversion is carried out on different voltages required by the module, the emission reaches the requirement of a final-stage power amplifier by 15V, the saturation output is larger than or equal to 30dBm, the power amplifier output is about 32dBm, the power amplifier efficiency is about 26%, so the power consumption is about 7.5W, and a boosting power supply module larger than 30W is selected. Other power supplies output 12V through LTM4644 as 5.5V and 3.3V.
Other parts of this embodiment are the same as any of embodiments 1 to 3, and thus are not described again.
Example 5:
this embodiment is further optimized based on any one of the embodiments 1 to 4, and as shown in fig. 5, the clock circuit module provides a required local oscillator signal for frequency conversion. The receiving down-conversion channel module and the transmitting up-conversion channel module are two-time frequency conversion, so four local oscillation signals need to be output:
the reference signal enters an AD9910 DDS to be output as reference, the output signal is divided into four paths through a power divider, wherein the two paths are respectively supplied to a frequency synthesizer HMC830 to be used as reference, and 5.4GHz and 4GHz spot frequency signals are respectively output as intermediate frequency local oscillation signals of a receiving channel and a transmitting channel in a receiving down-conversion channel module and a transmitting up-conversion channel module.
And the other two paths are supplied to an LMX2594 for reference, and one path directly outputs 11.1Ghz to 14.6GHz signals through the LMX2594 to be used as local oscillation signals of a transmitting channel in a transmitting up-conversion channel module. And the other path of LMX2594 output signal obtains a local oscillation signal of a receiving channel in the receiving down-conversion channel module through frequency multiplication.
The LMX2594 is an ultra-low phase noise frequency synthesizer with a built-in VCO, the output frequency is 10 MHz-15 GHz, and the ultra-low phase noise frequency synthesizer can work in an integer mode and a decimal mode, and the HMC830 is a low phase noise frequency synthesizer with a built-in VCO, the output frequency is 25 MHz-3 GHz, and the ultra-low phase noise frequency synthesizer can work in the integer mode and the decimal mode.
Other parts of this embodiment are the same as any of embodiments 1 to 4, and thus are not described again.
Example 6:
in this embodiment, further optimization is performed on the basis of any one of the embodiments 1 to 5, and as shown in fig. 6, the control chip in the digital control circuit module selects a watson ARM chip HWD32F103E-LQFP64; the chip is provided with 51 general input/output IO ports, and the highest working frequency is 80MHz; timers, ADC, SPIs, I2Cs, USARTs and the like are supported to be used as external triggers.
Other parts of this embodiment are the same as any of embodiments 1 to 5, and thus are not described again.
The above, only the preferred embodiment of the present invention is not intended to be a limitation of the present invention in any form, and all the technical matters of the present invention are all within the protection scope of the present invention to any simple modification and equivalent changes made by the above embodiments.
Claims (6)
1. A Ka frequency band frequency conversion transceiving component is characterized by comprising a power supply processing circuit module, a digital control circuit module, a clock circuit module, a receiving down-conversion channel module and a transmitting up-conversion channel module; the power supply processing circuit module is in link connection with the digital control circuit module, the clock circuit module, the receiving down-conversion channel module and the transmitting up-conversion channel module; the receiving down-conversion channel module comprises a primary receiving frequency conversion unit and a secondary receiving frequency conversion unit, and the primary receiving frequency conversion unit is connected with the secondary receiving frequency conversion unit through an amplifier; the transmitting up-conversion channel module comprises a primary transmitting frequency conversion unit and a secondary transmitting frequency conversion unit, and the primary transmitting frequency conversion unit is connected with the secondary transmitting frequency conversion unit through an amplifier; the power supply processing circuit module is used for providing different voltages for the digital control circuit module, the clock circuit module, the receiving down-conversion channel module and the transmitting up-conversion channel module; the clock circuit module is used for providing local oscillation signals for the receiving down-conversion channel module and the transmitting up-conversion channel module; the receiving down-conversion channel module is used for receiving radio-frequency signals, performing low-noise amplification processing on the radio-frequency signals, performing filtering processing and frequency conversion on the radio-frequency signals through the primary receiving frequency conversion unit and the secondary receiving frequency conversion unit, outputting intermediate-frequency signals after intermediate-frequency amplification, and sending the intermediate-frequency signals to the transmitting up-conversion channel module; the transmitting up-conversion channel module is used for receiving the intermediate frequency signal sent by the receiving down-conversion channel module, and performing twice frequency conversion filtering and amplification on the intermediate frequency signal in a transmitting channel of the transmitting up-conversion channel module through the primary transmitting frequency conversion unit and the secondary transmitting frequency conversion unit to output a radio frequency signal.
2. The Ka band variable frequency transceiver module of claim 1, comprising:
the receiving down-conversion channel module comprises a primary receiving frequency conversion unit, a secondary receiving frequency conversion unit, an image frequency filter, a numerical control attenuator, a first amplifier D1, a second amplifier D2 and a third amplifier D3; the primary receiving frequency conversion unit comprises a first receiving mixer, a filter IF _ R1 and a broadband synthesizer Lo _ R1, wherein the filter IF _ R1 and the broadband synthesizer Lo _ R1 are respectively connected with the first receiving mixer;
the secondary receiving frequency conversion unit comprises a second receiving mixer, a filter IF _ R2 and a broadband synthesizer Lo _ R2, and the filter IF _ R2 and the broadband synthesizer Lo _ R2 are respectively connected with the second receiving mixer; and the first amplifier D1 is sequentially connected with the image frequency filter, the primary receiving frequency conversion unit, the second amplifier D2, the secondary receiving frequency conversion unit, the third amplifier D3 and the digital control attenuator in a link mode.
3. The Ka band variable frequency transceiver module of claim 1, comprising:
the transmitting up-conversion channel module comprises a primary transmitting frequency conversion unit, a secondary transmitting frequency conversion unit, a numerical control attenuator, a sideband filter, a broadband synthesizer Lo _ R2, a fourth amplifier D4, a fifth amplifier D5, a sixth amplifier D6 and a seventh amplifier D7;
the primary transmitting frequency conversion unit comprises a first transmitting mixer, a filter IF _ T1 and a broadband synthesizer Lo _ T1, wherein the filter IF _ T1 and the broadband synthesizer Lo _ T1 are respectively connected with the first transmitting mixer; the secondary transmitting frequency conversion unit comprises a second transmitting mixer, a filter IF _ T2 and a broadband synthesizer Lo _ T2, and the filter IF _ T2 and the broadband synthesizer Lo _ T2 are respectively connected with the second transmitting mixer;
the numerical control attenuator is sequentially connected with the amplifier D4, the primary transmitting frequency conversion unit, the fifth amplifier D5, the secondary transmitting frequency conversion unit, the sixth amplifier D6 and the seventh amplifier D7 in a link mode.
4. The Ka band variable frequency transceiver module of claim 3, wherein said sixth amplifier D6 is a driver amplifier.
5. A Ka band variable frequency transceiver module according to any one of claims 2 to 3, comprising: the clock circuit module is respectively connected with the receiving down-conversion channel module and the transmitting up-conversion channel module; the clock circuit module comprises a power divider, and is used for dividing received signals into four local oscillation signals through the power divider, and respectively sending the local oscillation signals to the broadband synthesizer Lo _ R1, the broadband synthesizer Lo _ R2, the broadband synthesizer Lo _ T1 and the broadband synthesizer Lo _ T2.
6. The Ka-band frequency conversion transceiving assembly of claim 1, wherein the digital control circuit module comprises an ARM chip of a model HWD32F103E-LQFP 64.
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| CN202220731766.7U CN217546043U (en) | 2022-03-31 | 2022-03-31 | Ka frequency channel frequency conversion receiving and dispatching subassembly |
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| CN202220731766.7U CN217546043U (en) | 2022-03-31 | 2022-03-31 | Ka frequency channel frequency conversion receiving and dispatching subassembly |
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