CN216086629U - Integrated broadband large-dynamic low-noise low-stray receiving assembly - Google Patents
Integrated broadband large-dynamic low-noise low-stray receiving assembly Download PDFInfo
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- CN216086629U CN216086629U CN202121204009.6U CN202121204009U CN216086629U CN 216086629 U CN216086629 U CN 216086629U CN 202121204009 U CN202121204009 U CN 202121204009U CN 216086629 U CN216086629 U CN 216086629U
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Abstract
The utility model discloses an integrated broadband large-dynamic low-noise low-stray receiving assembly, which comprises an external control port, a digital communication control module, a frequency source module and a frequency conversion module for radio frequency input and intermediate frequency output, wherein the frequency conversion module comprises a radio frequency switch filter bank and a frequency conversion circuit, and the radio frequency switch filter bank is electrically connected with the frequency conversion circuit; the digital communication control module and the frequency source module are both electrically connected with the frequency conversion module, the digital communication control module is respectively electrically connected with the radio frequency switch filter bank and the frequency conversion circuit, and the frequency source module is electrically connected with the frequency conversion circuit; the external control port is electrically connected with the digital communication control module, the digital communication control module is electrically connected with the frequency source module, and the broadband large dynamic range radio frequency input and the broadband small dynamic range intermediate frequency output are realized through the comprehensive frequency source design technology, the digital communication control technology and the radio frequency channel technology, so that the stray harmonic suppression capability of the assembly is enhanced.
Description
Technical Field
The utility model belongs to the technical field of radio frequency communication application, relates to a receiving device technology, and particularly relates to an integrated broadband large-dynamic low-noise low-stray receiving assembly.
Background
The integrated broadband large-dynamic low-noise low-stray receiving assembly comprises a frequency source module, a frequency conversion module, a digital communication control module and an external control port, and mainly converts a received radio frequency signal into an intermediate frequency signal for output.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an integrated broadband large-dynamic low-noise low-stray receiving assembly, which is used for solving the problems of insufficient dynamic range, poor stray harmonic suppression capability, insufficient sensitivity, large volume and heavy weight of the conventional receiving assembly.
The purpose of the utility model can be realized by the following technical scheme:
an integrated broadband large dynamic low noise low stray receiving assembly comprises an external control port, a digital communication control module and a frequency source module, wherein the external control port is electrically connected with the digital communication control module which is electrically connected with the frequency source module,
the frequency conversion module is used for radio frequency input and intermediate frequency output, and comprises a radio frequency switch filter bank and a frequency conversion circuit, wherein the radio frequency switch filter bank is electrically connected with the frequency conversion circuit;
the digital communication control module is respectively and electrically connected with the radio frequency switch filter bank and the frequency conversion circuit, and the frequency source module is electrically connected with the frequency conversion circuit.
Further, the radio frequency switch filter bank comprises a plurality of filters and a radio frequency switch;
the filters form a plurality of channels, one end of each filter is electrically connected with the output end of the frequency conversion circuit through the radio frequency switch, the other end of each filter is electrically connected with the input end of the equalizer through the radio frequency switch, and the output end of the equalizer is an intermediate frequency output end;
the digital communication end of the radio frequency switch is electrically connected with the digital communication control module or the digital communication end of the radio frequency switch is electrically connected with the component external control port.
Furthermore, the frequency conversion circuit comprises a first filter, a limiter, a numerical control attenuator, a low noise amplifier, a first mixer, a second filter, a first amplifier, a second mixer, a third filter, a second amplifier and an equalizer;
the input end of the first filter is a radio frequency input end, the output end of the first filter is electrically connected with the input end of the amplitude limiter, the output end of the amplitude limiter is electrically connected with the input end of the low noise amplifier through the numerical control attenuator, the output end of the low noise amplifier is electrically connected with the input end of the second filter through the first frequency mixer, the output end of the second filter is electrically connected with the input end of the second frequency mixer through the first amplifier, the output end of the second frequency mixer is electrically connected with the input end of the second amplifier through the third frequency mixer, the output end of the second amplifier is electrically connected with the input end of the equalizer through the radio frequency switch filter bank, and the output end of the equalizer outputs an intermediate frequency signal;
the digital control end of the numerical control attenuator is electrically connected with the digital communication control module or the digital control end of the numerical control attenuator is electrically connected with the external control port of the component;
the first mixer and the second mixer are both electrically connected with the frequency source module.
Furthermore, the frequency source module comprises a crystal oscillator, a power divider, a phase-locked loop, an amplifier and a fourth filter;
the input end of the power divider is electrically connected with the output end of the crystal oscillator, the output end of the power divider is electrically connected with the input end of the phase-locked loop, the output end of the phase-locked loop is electrically connected with the input end of a fourth filter through an amplifier, and the output end of the fourth filter is electrically connected with the input ends of a first frequency mixer and a second frequency mixer in the frequency conversion module respectively;
wherein, phase-locked loop SPI communication interface is connected with digital communication control module electricity.
Further, the digital communication control module comprises a single chip microcomputer or an FPGA.
Compared with the prior art, the utility model has the beneficial effects that:
the integrated broadband large-dynamic low-noise low-stray receiving assembly integrates a frequency source design technology, a digital communication control technology and a radio frequency channel technology, realizes broadband large-dynamic-range radio frequency input and broadband small-dynamic-range intermediate frequency output, enhances the stray harmonic suppression capability of the assembly, and has the advantages of high sensitivity, small size, light weight and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic block diagram of the circuit of the present invention;
FIG. 2 is a schematic diagram of the circuit structure of the present invention.
In the figure: 1. a frequency source module; 11. crystal oscillation; 12. a power divider; 13. a phase-locked loop; 14. an amplifier; 15. a fourth filter; 2. a frequency conversion module; 21. a first filter; 22. an amplitude limiter; 23. a numerical control attenuator; 24. a low noise amplifier; 25. a first mixer; 26. a second filter; 27. a first amplifier; 28. a second mixer; 29. a third filter; 210. a second amplifier; 211. a radio frequency switch filter bank; 212. an equalizer; 3. a digital communication control module; 4. an external control port.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Thus, the detailed description of the embodiments of the present invention provided in the following drawings is not intended to limit the scope of the utility model as claimed, but is merely representative of selected embodiments of the utility model.
Traditionally, the receiving assembly has the defects of insufficient dynamic range, poor stray harmonic suppression capability, insufficient sensitivity, large volume and heavy weight and the like.
In order to solve the technical problems, the application provides an integrated broadband large-dynamic low-noise low-stray receiving assembly, which comprises an external control port 4, a digital communication control module 3, a frequency source module 1 and a frequency conversion module 2 for radio frequency input and intermediate frequency output, wherein the frequency conversion module 2 comprises a radio frequency switch filter bank 211 and a frequency conversion circuit, and the radio frequency switch filter bank 211 is electrically connected with the frequency conversion circuit;
the digital communication control module 3 and the frequency source module 1 are both electrically connected with the frequency conversion module 2, the digital communication control module 3 is respectively electrically connected with the radio frequency switch filter bank 211 and the frequency conversion circuit, and the frequency source module 1 is electrically connected with the frequency conversion circuit;
the external control port 4 is electrically connected with the digital communication control module 3, and the digital communication control module 3 is electrically connected with the frequency source module 1.
Wherein, the big dynamic range radio frequency input broadband of broadband hangs down dynamic range intermediate frequency output, if directly export through the equalizer in frequency conversion module 2, the harmonic suppression of whole frequency conversion subassembly full frequency band within range can be relatively poor, because especially at the low frequency channel, its harmonic can fall in-band, if directly with a band pass filter, there is not the suppression effect to the harmonic of low frequency channel, introduce the radio frequency switch filter bank before the equalizer, with the frequency band segmentation processing, divide finely, can improve the interference killing feature of receiver greatly.
Based on the above description, the embodiment of the present invention provides an integrated broadband large dynamic low noise low stray receiving assembly as shown in fig. 1-2, wherein an output end of a digital communication control module 3 is electrically connected to a frequency source module 1 and a frequency conversion module 2, an input end of the digital communication control module is electrically connected to an external control end 4 of the assembly, an output end of the frequency source module 1 is electrically connected to an input end of the frequency conversion module 2, an input end of the frequency conversion module 2 is electrically connected to a radio frequency input end, and an output end of the frequency conversion module 2 is electrically connected to an intermediate frequency output end.
The frequency source module 1 comprises a crystal oscillator 11, a power divider 12, a phase-locked loop 13, an amplifier 14 and a fourth filter 15, wherein the input end of the power divider 12 is electrically connected with the output end of the crystal oscillator 11, the output end of the power divider is electrically connected with the input end of the phase-locked loop 13, the output end of the phase-locked loop 13 is electrically connected with the input end of the fourth filter 15 through the amplifier 14, the output end of the fourth filter 15 is electrically connected with the input ends of a first mixer 25 and a second mixer 28 in the frequency conversion module 2, and an SPI communication interface of the phase-locked loop 13 is electrically connected with the digital communication control module 3.
The frequency conversion module 2 comprises a first filter 21, a limiter 22, a numerical control attenuator 23, a low noise amplifier 24, a first mixer 25, a second filter 26, a first amplifier 27, a second mixer 28, a third filter 29, a second amplifier 210, a radio frequency switch filter bank 211 and an equalizer 212;
the input end of the first filter 21 is a radio frequency input end, the output end of the first filter is electrically connected with the input end of the amplitude limiter 22, the output end of the amplitude limiter 22 is electrically connected with the input end of the low noise amplifier 24 through the numerical control attenuator 23, the output end of the low noise amplifier 24 is electrically connected with the input end of the second filter 26 through the first mixer 25, the output end of the second filter 26 is electrically connected with the input end of the second mixer 28 through the first amplifier 27, the output end of the second mixer 28 is electrically connected with the input end of the second amplifier 210 through the third filter 29, the output end of the second amplifier 210 is electrically connected with the input end of the equalizer 212 through the radio frequency switch filter bank 211, and the output end of the equalizer 212 is an intermediate frequency output end;
the digital control attenuator 23 and the radio frequency switch are connected with the digital communication module 3 and the external control port 4 in two ways, wherein the first way is that the external control port 4 controls the digital communication module 3 and controls the digital control attenuator 23 and the radio frequency switch through the digital communication module 3;
in the other mode, the external control port 4 directly controls the numerical control attenuator 23 and the radio frequency switch;
in specific implementation, the digital control end of the numerical control attenuator 23 and the digital communication end of the radio frequency switch in the radio frequency switch filter bank 211 are electrically connected with the digital communication module 3, or the digital control end of the numerical control attenuator 23 and the digital communication end of the radio frequency switch in the radio frequency switch filter bank 211 are directly electrically connected with the external control port 4;
in specific implementation, the rf switch filter bank 211 includes a plurality of filters and rf switches;
the filters form a plurality of channels, one end of each filter is electrically connected with the output end of the frequency conversion circuit through the radio frequency switch, the other end of each filter is electrically connected with the input end of the equalizer 212 through the radio frequency switch, and the output end of the equalizer 212 is an intermediate frequency output end;
the digital communication control module 3 comprises a single chip microcomputer or an FPGA, and is electrically connected with the component external control end 4.
The disclosure, when embodied, comprises:
in the frequency source module, down-conversion of the receiving frequency is realized by two related local arrays, wherein the local array unit 1 is realized by a phase-locked circuit of the ADF5356, the crystal oscillator 11 is divided into two paths by two paths of power dividers, reference frequencies are respectively provided for the two ADFs 5356, and a proper loop filter is arranged and combined with a register configuration inside a phase-locked loop to configure a proper bandwidth and a proper phase margin of the loop filter, so that the phase-locked loop ADF5356 outputs a fixed frequency, and the frequency LO1 and the frequency LO2 are output after amplification and filtering to serve as local oscillation signals of a frequency conversion component. The crystal oscillator 11 adopted in the method is O11F-L419-100.00MHz
The second amplifier 27 of the frequency conversion module 2 realizes full-band full-dynamic-range saturation amplification, and the second amplifier 210 requires full-band full-dynamic-range linear amplification.
The whole assembly also has the characteristics of wide-band large dynamic radio frequency input and wide-band small dynamic range intermediate frequency output.
In order to reduce electromagnetic interference, a power supply, a digital communication control module 3 and a frequency source module 1 are independently integrated on one surface, a frequency conversion module 2 is independently integrated on the other surface, interference between channels is reduced by adding a partition wall, in order to avoid self-excitation of the components, the amplifier 14 is separately covered by a shielding cover, and good grounding of the partition wall, a substrate and a shell is ensured.
In order to realize the miniaturization and the light weight of the assembly, most of selected devices are bare chips, a double-sided integration mode is adopted, most of the devices are bare chips, and the inside of the assembly needs to be sealed, so that the cover plate is sealed in a laser sealing and welding mode.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The specific meanings of the above terms in the present invention can be understood in specific cases by those skilled in the art; the preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not exhaustive and do not limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims (7)
1. An integrated broadband large dynamic low noise low stray receiving assembly comprises an external control port (4), a digital communication control module (3) and a frequency source module (1), wherein the external control port (4) is electrically connected with the digital communication control module (3), the digital communication control module (3) is electrically connected with the frequency source module (1),
the frequency conversion module (2) is used for radio frequency input and intermediate frequency output, the frequency conversion module (2) comprises a radio frequency switch filter bank (211) and a frequency conversion circuit, and the radio frequency switch filter bank (211) is electrically connected with the frequency conversion circuit;
the digital communication control module (3) is respectively and electrically connected with the radio frequency switch filter bank (211) and the frequency conversion circuit, and the frequency source module (1) is electrically connected with the frequency conversion circuit.
2. The integrated wideband large dynamic low noise low spurious reception assembly according to claim 1, wherein said rf switch filter bank (211) comprises a plurality of filters and rf switches;
one end of each filter is electrically connected with the output end of the frequency conversion circuit through a radio frequency switch, the other end of each filter is electrically connected with the input end of the equalizer (212) through the radio frequency switch, and the output end of the equalizer (212) is an intermediate frequency output end;
the digital communication end of the radio frequency switch is electrically connected with the digital communication control module (3) or the digital communication end of the radio frequency switch is electrically connected with the component external control port.
3. The integrated broadband large dynamic low noise and low spurious reception assembly according to claim 1, wherein the frequency conversion circuit comprises a first filter (21), a limiter (22), a digitally controlled attenuator (23), a low noise amplifier (24), a first mixer (25), a second filter (26), a first amplifier (27), a second mixer (28), a third filter (29), a second amplifier (210), and an equalizer (212);
the input end of a first filter (21) is a radio frequency input end, the output end of the first filter (21) is electrically connected with the input end of a limiter (22), the output end of the limiter (22) is electrically connected with the input end of a low noise amplifier (24) through a numerical control attenuator (23), the output end of the low noise amplifier (24) is electrically connected with the input end of a second filter (26) through a first mixer (25), the output end of the second filter (26) is electrically connected with the input end of a second mixer (28) through a first amplifier (27), the output end of the second mixer (28) is electrically connected with the input end of a second amplifier (210) through a third filter (29), the output end of the second amplifier (210) is electrically connected with the input end of an equalizer (212) through a radio frequency switch filter bank (211), and the output end of the equalizer (212) outputs an intermediate frequency signal;
the digital control end of the numerical control attenuator (23) is electrically connected with the digital communication control module (3) or the digital control end of the numerical control attenuator (23) is electrically connected with the external control port of the component;
the first mixer (25) and the second mixer (28) are both electrically connected to the frequency source module (1).
4. The integrated broadband large dynamic low noise low spurious reception assembly according to claim 3, wherein the frequency source module (1) comprises a crystal oscillator (11), a power divider (12), a phase-locked loop (13), an amplifier (14) and a fourth filter (15);
the input end of the power divider (12) is electrically connected with the output end of the crystal oscillator (11), the output end of the power divider (12) is electrically connected with the input end of the phase-locked loop (13), the output end of the phase-locked loop (13) is electrically connected with the input end of a fourth filter (15) through an amplifier (14), and the output end of the fourth filter (15) is electrically connected with the input ends of a first mixer (25) and a second mixer (28) in the frequency conversion module (2) respectively;
the SPI communication interface of the phase-locked loop (13) is electrically connected with the digital communication control module (3).
5. The integrated broadband large dynamic low noise low spurious reception assembly according to claim 1, wherein the digital communication control module (3) comprises a single chip or an FPGA.
6. The integrated broadband large dynamic low noise and low stray reception assembly according to claim 1, wherein the digital communication control module (3) and the frequency source module (1) are integrated on one side, the frequency conversion module (2) is integrated on the other side, and a partition wall is arranged between the channels.
7. An integrated broadband large dynamic low noise low spurious reception assembly according to claim 4, characterized in that said amplifier (14) is arranged inside a shielded enclosure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121204009.6U CN216086629U (en) | 2021-05-31 | 2021-05-31 | Integrated broadband large-dynamic low-noise low-stray receiving assembly |
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| CN202121204009.6U CN216086629U (en) | 2021-05-31 | 2021-05-31 | Integrated broadband large-dynamic low-noise low-stray receiving assembly |
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| CN216086629U true CN216086629U (en) | 2022-03-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113364475A (en) * | 2021-05-31 | 2021-09-07 | 中国电子科技集团公司第四十三研究所 | Integrated broadband large-dynamic low-noise low-stray receiving assembly |
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2021
- 2021-05-31 CN CN202121204009.6U patent/CN216086629U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113364475A (en) * | 2021-05-31 | 2021-09-07 | 中国电子科技集团公司第四十三研究所 | Integrated broadband large-dynamic low-noise low-stray receiving assembly |
| CN113364475B (en) * | 2021-05-31 | 2024-07-12 | 中国电子科技集团公司第四十三研究所 | Integrated broadband large-dynamic low-noise low-spurious receiving assembly |
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