CN214228201U - X frequency channel up-conversion equipment - Google Patents
X frequency channel up-conversion equipment Download PDFInfo
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- CN214228201U CN214228201U CN202120133631.6U CN202120133631U CN214228201U CN 214228201 U CN214228201 U CN 214228201U CN 202120133631 U CN202120133631 U CN 202120133631U CN 214228201 U CN214228201 U CN 214228201U
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Abstract
The utility model discloses a frequency conversion equipment on X frequency channel, including single chip microcomputer control unit, single chip microcomputer control unit is connected with intermediate frequency filtering amplification unit respectively, local oscillator unit and inside and outside reference switch unit, inside and outside reference switch unit connects the local oscillator unit, local oscillator unit connection has frequency conversion filtering unit, intermediate frequency filtering amplification unit connects frequency conversion filtering unit, frequency conversion filtering unit is connected with output amplification filtering unit, single chip microcomputer control unit, intermediate frequency filtering amplification unit, local oscillator unit, inside and outside reference switch unit, frequency conversion filtering unit and output amplification filtering unit all connect the electrical unit. The characteristics of good amplitude-frequency response, good phase noise, good port matching degree, low irrelevant signal and in-band interference stray and high linear output are achieved, the gain is controllable, the work processing signal meets the 1KHz stepping unit and the like, and the controllability of the output signal is improved.
Description
Technical Field
The utility model relates to an up-conversion equipment's technical field particularly, relates to an X frequency channel up-conversion equipment.
Background
Satellite measurement and control is a ground system which is researched and developed by the nation to track, measure and control a spacecraft. The basic framework comprises various measurement and control equipment, such as a microwave radar, a Doppler velocimeter, optical equipment, a microwave unified system and the like. In the field of satellite space measurement and control, microwave up-conversion equipment is used for converting an intermediate frequency modulated signal (70MHz or 140MHz +/-18 MHz) into satellite communication uplink frequency, so that remote measurement and control of a ground measurement and control station on a satellite in space are realized. The performance of the up-conversion equipment directly influences the accuracy, high-speed tracking capability, fault detection capability and the like of the ground measurement and control station on the measurement and control satellite.
The up-conversion equipment is equipment for shifting a low-intermediate frequency signal frequency spectrum to a high-frequency radio frequency signal in the microwave field, mainly has the capacity of transmitting electromagnetic waves with specified frequency in space, and occupies a central position in the national defense and military field, the satellite measurement and control field and the satellite navigation positioning field. The local ground measurement and control station up-converts the processed low and medium frequency signals to be received by the space satellite, so that the communication technology between the ground station and the satellite is realized, wherein the up-conversion equipment plays a key role in the transmission distance requirement of communication information, the quality of the signals and the like.
When the up-conversion equipment is applied to satellite measurement and control, the up-conversion equipment has various stable and reliable performances. The up-conversion equipment used in the satellite measurement and control system has a wide enough frequency band to realize multi-angle and multi-range information expansion, a high enough precision frequency step to realize high-precision information sampling, and high enough power, phase noise, third-order intermodulation and other indexes to realize the communication and remote control technology between the satellite and the measurement and control station, but the existing up-conversion equipment is difficult to meet the requirements.
An effective solution to the problems in the related art has not been proposed yet.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem among the correlation technique, the utility model provides an X frequency channel up-conversion equipment can overcome prior art's the aforesaid not enough.
In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:
the utility model provides a frequency conversion equipment on X frequency channel, includes single chip microcomputer control unit, single chip microcomputer control unit is connected with intermediate frequency filtering amplification unit, local oscillator unit and interior outer switching unit that consults respectively, interior outer switching unit that consults connects the local oscillator unit, the local oscillator unit is connected with frequency conversion filtering unit, intermediate frequency filtering amplification unit connects frequency conversion filtering unit, frequency conversion filtering unit is connected with the output and amplifies filtering unit, single chip microcomputer control unit intermediate frequency filtering amplification unit the local oscillator unit interior outer switching unit that consults frequency conversion filtering unit and output and amplify filtering unit and all connect the electrical unit.
Further, the intermediate frequency filtering and amplifying unit comprises a pi-type attenuation network module P1, an LC filter L1, a numerical control attenuator At1, an amplifier A1, a pi-type attenuation network module P2, an amplifier A2 and an LTCC filter LT1 which are sequentially connected in series.
Further, the frequency conversion filtering unit comprises a mixer M1, a pi-type attenuation network module P4, a dielectric filter DF1, a pi-type attenuation network module P5, an amplifier A3, a dielectric filter DF2, a pi-type attenuation network module P6, an amplifier a4, a pi-type attenuation network module P7, a mixer M2 and a chip attenuator TC1 which are sequentially connected in series, and the LTCC filter LT1 is connected with the mixer M1 through a line provided with the pi-type attenuation network module P3.
Further, the output amplification filtering unit comprises a band-pass cavity filter D1, a chip attenuator TC2, an amplifier A5, a chip attenuator TC3, an amplifier A6 and a pi-type attenuation network module P8 which are sequentially connected in series.
Further, the single chip microcomputer control unit comprises a single chip microcomputer, the single chip microcomputer is respectively connected with an RS232 driving chip and a phase-locked loop, and the single chip microcomputer is further connected with the numerical control attenuator At 1.
Further, the local oscillation unit includes a first local oscillation module and a second local oscillation module, the first local oscillation module and the second local oscillation module are both connected to the single chip microcomputer, the first local oscillation module is connected to the frequency mixer M1, and the second local oscillation module is connected to the frequency mixer M2.
Further, the inside and outside reference switch unit divides ware SB1 including microwave switch, amplifier A7 and the merit of establishing ties in proper order, the microwave switch still is connected with 10MHZ crystal oscillator and 10MHZ input detector respectively, the microwave switch and 10MHZ input detector all connects the singlechip, ware SB1 is divided to the merit is connected with pi type decay network module P9 respectively and the phase-locked loop, the phase-locked loop is connected with loop filter, loop filter connects voltage controlled oscillator, voltage controlled oscillator is connected with merit and divides ware SB2, ware SB2 is divided to the merit is connected with merit respectively and divides ware SB3 and the phase-locked loop, ware SB3 is divided to the merit is connected respectively first local oscillator module with second local oscillator module.
Further, the power supply unit includes an LC filter circuit L2, the LC filter circuit L2 is respectively connected with a switch power supply K1 and a switch power supply K2, the switch power supply K1 is connected with an LC filter circuit L3, the LC filter circuit L3 is connected with a large-current low-noise voltage stabilizer Z1, the large-current low-noise voltage stabilizer Z1 is respectively connected with the intermediate frequency filtering and amplifying unit, the first local oscillator module, the frequency conversion and filtering unit and the voltage-controlled oscillator, the switch power supply K2 is connected with an LC filter circuit L4, the LC filter circuit L4 is respectively connected with a large-current low-noise voltage stabilizer Z2 and a low-dropout voltage stabilizer, the large-current low-noise voltage stabilizer Z2 is respectively connected with the output amplification filtering unit, the second local oscillator module and the internal and external reference switching unit, the low dropout regulator is respectively connected with the 10MHZ crystal oscillator, the phase-locked loop and the single-chip microcomputer control unit.
The utility model has the advantages that: by using the intermediate frequency filtering amplification unit, the phase-locked loop, the power supply unit, the single chip microcomputer control unit, the internal and external reference switching unit and the like, the characteristics of good amplitude-frequency response, good phase noise, good port matching degree, irrelevant signals, low in-band interference stray and high linear output are achieved, the gain is controllable, a work processing signal meets the 1KHz stepping unit and the like, and the controllability of an output signal is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and 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 these drawings without creative efforts.
Fig. 1 is a first schematic block diagram of an X-band up-conversion device according to an embodiment of the present invention;
fig. 2 is a schematic block diagram ii of an X-band up-conversion device according to an embodiment of the present invention;
fig. 3 is a schematic block diagram of an internal and external reference switching unit according to an embodiment of the present invention;
fig. 4 is a schematic block diagram of a single chip microcomputer control unit according to an embodiment of the present invention;
fig. 5 is a schematic block diagram of a power supply unit according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
As shown in FIGS. 1-5, according to the embodiment of the utility model a frequency conversion equipment on X frequency channel, including single chip microcomputer control unit, single chip microcomputer control unit is connected with intermediate frequency filtering amplification unit, local oscillator unit and interior external reference switch unit respectively, interior external reference switch unit connects the local oscillator unit, the local oscillator unit connection has frequency conversion filter unit, intermediate frequency filtering amplification unit connects frequency conversion filter unit, frequency conversion filter unit is connected with the output and amplifies filter unit, single chip microcomputer control unit intermediate frequency filtering amplification unit the local oscillator unit interior external reference switch unit frequency conversion filter unit and the output all connects electrical unit.
In a specific embodiment of the present invention, the intermediate frequency filtering and amplifying unit includes a pi-type attenuation network module P1, an LC filter L1, a digitally controlled attenuator At1, an amplifier a1, a pi-type attenuation network module P2, an amplifier a2, and an LTCC filter LT1, which are connected in series in sequence.
In a specific embodiment of the present invention, the frequency conversion filtering unit includes a mixer M1, a pi-type attenuation network module P4, a dielectric filter DF1, a pi-type attenuation network module P5, an amplifier A3, a dielectric filter DF2, a pi-type attenuation network module P6, an amplifier a4, a pi-type attenuation network module P7, a mixer M2 and a chip attenuator TC1, which are connected in series in sequence, and the LTCC filter LT1 is connected to the mixer M1 through a line provided with the pi-type attenuation network module P3.
In a specific embodiment of the present invention, the output amplifying and filtering unit includes a band-pass cavity filter D1, a chip attenuator TC2, an amplifier a5, a chip attenuator TC3, an amplifier a6 and a pi-type attenuation network module P8 connected in series in sequence.
The utility model discloses a concrete embodiment, the single chip microcomputer control unit includes the singlechip, the singlechip is connected with RS232 driver chip and phase-locked loop respectively, the singlechip is still connected numerical control attenuator At 1.
The utility model discloses a concrete embodiment, the local oscillator unit includes first local oscillator module and second local oscillator module, first local oscillator module with the singlechip is all connected to the second local oscillator module, first local oscillator module is connected mixer M1, the second local oscillator module is connected mixer M2.
The utility model discloses a concrete embodiment, inside and outside reference switch unit is including the microwave switch, amplifier A7 and the merit of establishing ties in proper order and divide ware SB1, the microwave switch still is connected with 10MHZ crystal oscillator and 10MHZ input detector respectively, the microwave switch and 10MHZ input detector all connects the singlechip, ware SB1 is divided to the merit is connected with pi type decay network module P9 respectively and the phase-locked loop, the phase-locked loop is connected with loop filter, loop filter is connected with voltage controlled oscillator, voltage controlled oscillator is connected with merit and divides ware SB2, ware SB2 is divided to the merit is connected with merit respectively and divides ware SB3 and the phase-locked loop, ware SB3 is divided to the merit is connected respectively first local oscillator module with second local oscillator module.
In a specific embodiment of the present invention, the power unit includes LC filter circuit L2, LC filter circuit L2 is connected with switching power supply K1 and switching power supply K2 respectively, switching power supply K1 is connected with LC filter circuit L3, LC filter circuit L3 is connected with large current low noise voltage stabilizer Z1, large current low noise voltage stabilizer Z1 is connected respectively the intermediate frequency filtering amplification unit, the first local oscillator module, the frequency conversion filter unit and the voltage controlled oscillator, switching power supply K2 is connected with LC filter circuit L4, LC filter circuit L4 is connected with large current low noise voltage stabilizer Z2 and low dropout voltage stabilizer respectively, large current low noise voltage stabilizer Z2 is connected respectively the output amplification filter unit, the second local oscillator module, the internal and external reference switching unit, the low dropout voltage stabilizer is connected respectively the 10MHZ crystal oscillator, The phase-locked loop and the singlechip control unit.
For the convenience of understanding the above technical solutions of the present invention, the above technical solutions of the present invention will be described in detail through specific use modes.
X frequency channel up-conversion equipment mainly used goes up processing to X frequency channel radio frequency signal, it includes intermediate frequency filtering amplification unit, frequency conversion filtering unit, output amplification filtering unit, inside and outside reference switching unit, single chip microcomputer control unit and electrical unit etc. its integrated level is high, small, the electromagnetic shield is good, convenient operation. The X-frequency-band up-conversion equipment mainly uses an enhanced single chip microcomputer in a single chip microcomputer control unit to support a remote communication function and a signal control function, and communication control can be realized by using a universal PC serial port (namely RS 232) for communication according to a standard communication standard by a control instruction.
The 70MHz signal input to the intermediate frequency filtering amplification unit is a modulated signal output by the preceding baseband unit, has an input power range of more than 40dB, and has linear undistorted amplification in the input power range after being amplified by the X-frequency band up-conversion equipment; within the whole radio frequency X frequency band with the bandwidth of 2GHz, the output of any frequency point can be realized, the frequency conversion unit is in the level of 1KHz, and the medium frequency bandwidth is 40 MHz.
The if filtering and amplifying unit may filter the input signal through the LC filter L1, and then perform power amplification.
The frequency conversion filtering unit is used for carrying out nonlinear intermodulation on an operating frequency entering from the outside and a carrier signal generated by the voltage-controlled oscillator, and filtering and inhibiting a generated combined signal, namely a double-sideband sum-difference signal, by a filter (comprising a dielectric filter DF1 and a dielectric filter DF 2) to select an output signal, and has the function of inhibiting and weakening an intermodulation irrelevant signal.
The output amplification filtering unit is used for carrying out amplitude amplification on the output signal subjected to frequency conversion by the preceding frequency conversion filtering unit and suppressing harmonic waves in the output signal. The chip attenuator and the amplifier adopt the series connection sequence of attenuation and amplification according to the level distribution, and the linear output range of the output amplification filtering unit is ensured.
The internal and external reference switching unit is used for automatically judging and selecting the internal and external 10M reference signals required by the up-conversion equipment of the X frequency band.
The singlechip control unit comprises a singlechip, the singlechip can control each functional unit (comprising an intermediate frequency filtering and amplifying unit, a frequency conversion filtering unit, an output amplifying and filtering unit, an internal and external reference switching unit and the like) and inquire the state, and the functions of a digital controllable integrated circuit, state inquiry, state report, remote communication and the like can be realized.
The power supply unit is used for converting input +12V direct-current voltage into internal required voltage after high-efficiency voltage conversion, and then filtering for multiple times so that the X-frequency-band up-conversion equipment can work normally. The +12V direct-current voltage becomes a power supply required by an internal unit with lower voltage through the switching power supplies K1 and K2, the switching power supplies K1 and K2 can generate low-frequency electromagnetic wave interference, and low-frequency noise waves are filtered by the LC filter circuits L3 and L4 and the large-current low-noise voltage regulators Z1 and Z2, so that the purity of working signals is ensured, and the signal quality is not influenced.
The up-conversion equipment of the X frequency band adopts a five-stage amplifier (namely, an amplifier A1-A5), a numerical control attenuator At1 is arranged At the front stage, the integral gain is more than 45dB, and the numerical control attenuator At1 is arranged in front of a first-stage amplifier (namely, an amplifier A1), so that the maximum output power of the last-stage amplifier (namely, an amplifier A5) in a linear region is ensured when a large signal is input.
The power output by the frequency source is large enough to ensure the normal performance of the up-conversion equipment in the X frequency band. The phase-locked loop is arranged in the X frequency band up-conversion equipment, so that crosstalk can be shielded, interference signals which have great influence on a signal path are avoided, and the performance of the X frequency band up-conversion equipment is ensured.
The internal and external reference switching unit, the intermediate frequency filtering and amplifying unit and the power supply unit are all provided with adaptive filters, so that no crosstalk is generated among all signals.
The intermediate frequency filtering and amplifying unit is added with proper attenuation behind the filter, so that the integral standing-wave ratio index of the frequency conversion equipment on the X frequency band can be ensured.
The internal and external reference switching unit performs internal and external switching after the 10MHz reference signal is subjected to power amplification by the amplifier A7, so that the power of the 10MHz signal output to the terminal baseband unit is not too small.
The link composed of amplifiers, digital attenuators and filters is affected by the amplitude-frequency response and standing wave of each device, and the overall amplitude-frequency response is poor, so that the pi-type attenuation network module is added between stages to improve the effect of the standing wave between stages.
When the satellite communication uplink frequency signal amplifying and filtering device is used specifically, the 70MHz intermediate frequency signal is filtered, attenuated and amplified by the intermediate frequency filtering and amplifying unit, then is converted into the satellite communication uplink frequency signal by the frequency conversion and filtering unit, and finally is amplified, filtered and output by the output amplifying and filtering unit.
To sum up, with the help of the above technical scheme of the utility model, can have in whole X frequency channel working signal, amplitude-frequency response is good, and phase noise is good, and the port matching degree is good, and irrelevant signal and in-band interference are stray low, high linear output, and the gain is controllable, and the work processing signal satisfies 1KHz step-by-step unit, and the suitability is strong, satisfies the high accuracy in the field of observing and controlling, and is small, but characteristics such as exclusive use also can adorn at quick-witted case complete machine use.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a frequency conversion equipment on X frequency channel, its characterized in that, includes single chip microcomputer control unit, single chip microcomputer control unit is connected with intermediate frequency filtering amplification unit, local oscillator unit and interior outer switching unit that consults respectively, interior outer switching unit that consults connects the local oscillator unit, the local oscillator unit is connected with frequency conversion filtering unit, intermediate frequency filtering amplification unit connects frequency conversion filtering unit, frequency conversion filtering unit is connected with the output and amplifies filtering unit, single chip microcomputer control unit intermediate frequency filtering amplification unit the local oscillator unit interior outer switching unit that consults frequency conversion filtering unit and the power supply unit is all connected to the output and amplifies filtering unit.
2. The X-band up-conversion device according to claim 1, wherein the intermediate frequency filtering amplification unit comprises a pi-type attenuation network module P1, an LC filter L1, a numerical control attenuator At1, an amplifier A1, a pi-type attenuation network module P2, an amplifier A2 and an LTCC filter LT1 which are connected in series in sequence.
3. The X-band up-conversion device according to claim 2, wherein the frequency conversion filtering unit comprises a mixer M1, a pi-type attenuation network module P4, a dielectric filter DF1, a pi-type attenuation network module P5, an amplifier A3, a dielectric filter DF2, a pi-type attenuation network module P6, an amplifier a4, a pi-type attenuation network module P7, a mixer M2 and a chip attenuator TC1, which are connected in series in sequence, and the LTCC filter LT1 is connected to the mixer M1 through a line provided with the pi-type attenuation network module P3.
4. The X-band up-conversion device according to claim 3, wherein the output amplification filtering unit comprises a band-pass cavity filter D1, a chip attenuator TC2, an amplifier A5, a chip attenuator TC3, an amplifier A6 and a pi-type attenuation network module P8 which are connected in series in sequence.
5. The X-band up-conversion device according to claim 4, wherein the single chip microcomputer control unit comprises a single chip microcomputer, the single chip microcomputer is respectively connected with an RS232 driving chip and a phase-locked loop, and the single chip microcomputer is further connected with the numerical control attenuator At 1.
6. The X-band up-conversion device according to claim 5, wherein the local oscillation unit comprises a first local oscillation module and a second local oscillation module, the first local oscillation module and the second local oscillation module are both connected to a single chip, the first local oscillation module is connected to the mixer M1, and the second local oscillation module is connected to the mixer M2.
7. The X-band up-conversion device according to claim 6, wherein the internal and external reference switching unit includes a microwave switch, an amplifier A7 and a power divider SB1 connected in series in sequence, the microwave switch is further connected with a 10MHZ crystal oscillator and a 10MHZ input detector respectively, the microwave switch and the 10MHZ input detector are both connected with the single chip microcomputer, the power divider SB1 is connected with a pi-type attenuation network module P9 and the phase-locked loop respectively, the phase-locked loop is connected with a loop filter, the loop filter is connected with a voltage-controlled oscillator, the voltage-controlled oscillator is connected with a power divider SB2, the power divider SB2 is connected with a power divider SB3 and the phase-locked loop respectively, and the power divider SB3 is connected with the first local oscillator module and the second local oscillator module respectively.
8. The X-band up-conversion apparatus according to claim 7, wherein the power unit comprises an LC filter circuit L2, the LC filter circuit L2 is connected with a switch power supply K1 and a switch power supply K2, the switch power supply K1 is connected with an LC filter circuit L3, the LC filter circuit L3 is connected with a large current low noise voltage regulator Z1, the large current low noise voltage regulator Z1 is connected with the IF filtering amplifying unit, the first local oscillation module, the frequency conversion filter unit and the voltage controlled oscillator, the switch power supply K2 is connected with an LC filter circuit L4, the LC filter circuit L4 is connected with a small current low noise voltage regulator Z2 and a large current low voltage difference voltage regulator Z2, the large current low noise voltage regulator Z2 is connected with the output amplifying filter unit, the second local oscillation module and the internal and external reference switching unit, the low dropout regulator is respectively connected with the 10MHZ crystal oscillator, the phase-locked loop and the single-chip microcomputer control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120133631.6U CN214228201U (en) | 2021-01-19 | 2021-01-19 | X frequency channel up-conversion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120133631.6U CN214228201U (en) | 2021-01-19 | 2021-01-19 | X frequency channel up-conversion equipment |
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| Publication Number | Publication Date |
|---|---|
| CN214228201U true CN214228201U (en) | 2021-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120133631.6U Active CN214228201U (en) | 2021-01-19 | 2021-01-19 | X frequency channel up-conversion equipment |
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| CN (1) | CN214228201U (en) |
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- 2021-01-19 CN CN202120133631.6U patent/CN214228201U/en active Active
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