CN210246748U - Ka intermediate frequency down-conversion module for microwave transceiver module - Google Patents
Ka intermediate frequency down-conversion module for microwave transceiver module Download PDFInfo
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- CN210246748U CN210246748U CN201922016796.0U CN201922016796U CN210246748U CN 210246748 U CN210246748 U CN 210246748U CN 201922016796 U CN201922016796 U CN 201922016796U CN 210246748 U CN210246748 U CN 210246748U
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Abstract
The utility model discloses a Ka intermediate frequency down-conversion module for a microwave transceiver module, which comprises a single-pole double-throw switch, a first amplifier, a first filter, a frequency mixer, a second filter, a second amplifier, a third filter and an attenuator which are connected in sequence; wherein the motionless end of single-pole double-throw switch is connected intermediate frequency joint test interface, Ka input channel respectively, and this vibration source subassembly is connected the mixer, and the output of attenuator is as the output of this Ka intermediate frequency down-conversion module and exports down conversion signal, and this down conversion module has reduced electronic component's use on prior art, greatly reduced manufacturing cost.
Description
Technical Field
The utility model relates to a microwave communication field especially is used for microwave transceiver module's Ka intermediate frequency down conversion module.
Background
The microwave receiving and transmitting system is a device for receiving, transmitting or switching microwave signals by means of an antenna feeder system, and is a main component of a microwave relay communication system; in some application fields, the microwave transceiver system not only includes a microwave receiving module and a microwave transmitting module, but also has a corresponding Ka band down-conversion module, for example, chinese patent application No. 201610015792.9 entitled Ka band multi-channel down-conversion device, which is used as a first attenuator, a first isolator, a first amplifier, a second isolator, a first cavity filter, a first mixer, a second cavity filter, a third isolator, a second amplifier, a second mixer, a third cavity filter, a fourth isolator, a third amplifier, a third mixer, a fifth isolator and a fourth cavity filter, which are connected in sequence to a signal channel of down-conversion processing; the stray rejection degree of the link is improved by adopting a four-stage cavity filter.
Along with the progress of science and technology, the user often wants electronic equipment's volume littleer and littleer, reaches the same or better technological effect with lower cost simultaneously, based on above-mentioned prior art, the utility model provides a more Ka down conversion module that accords with user's demand.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome prior art's is not enough, reduces electronic component's use when having the stray suppression effect of ideal for the manufacturing cost of product reduces, and then provides the Ka intermediate frequency down conversion module that is used for microwave transceiver module.
The purpose of the utility model is realized through the following technical scheme: the Ka intermediate frequency down-conversion module for the microwave transceiver module comprises a single-pole double-throw switch, a first amplifier, a first filter, a frequency mixer, a local oscillator source component, a second filter, a second amplifier, a third filter and an attenuator;
a first fixed end of the single-pole double-throw switch is connected with the intermediate frequency joint test interface, a second fixed end of the single-pole double-throw switch is connected with a Ka input channel, and a movable end of the single-pole double-throw switch is connected with the input end of the first amplifier;
the output end of the first amplifier is connected with the input end of the first filter;
the output end of the first filter is connected with the first input end of the mixer;
a second input end of the frequency mixer is connected with an output end of the local oscillator source component, and an output end of the frequency mixer is connected with an input end of the second filter;
the output end of the second filter is connected with the input end of the second amplifier;
the output end of the second amplifier is connected with the input end of the third filter;
the output end of the third filter is connected with the input end of the attenuator;
and the output end of the attenuator is used as the output end of the Ka intermediate frequency down-conversion module to output down-conversion signals.
Furthermore, the local oscillation source assembly comprises a frequency multiplier, a DDS signal generator, a fourth filter, a phase-locked loop circuit, a third amplifier and a fifth filter;
the input end of the frequency multiplier receives a clock signal, and the output end of the frequency multiplier is connected with the input end of the DDS signal generator;
the output end of the DDS signal generator is connected with the input end of the fourth filter;
the output end of the fourth filter is connected with the input end of the phase-locked loop circuit;
the output end of the phase-locked loop circuit is connected with the input end of the third amplifier;
the output end of the third amplifier is connected with the input end of a fifth filter;
and the output end of the fifth filter is used as the output end of the local oscillator source component to output a local oscillator signal to the second input end of the frequency mixer.
Furthermore, the phase-locked loop circuit comprises a phase discriminator, a charge pump, a sixth filter, an oscillator, a frequency divider and a seventh filter;
the first input end of the phase discriminator is used as the input end of the phase-locked loop circuit and is connected with the output end of the fourth filter, the second input end of the phase discriminator is connected with the output end of the frequency divider, and the output end of the phase discriminator is connected with the input end of the charge pump;
the output end of the charge pump is connected with the input end of the sixth filter;
the output end of the sixth filter is connected with the input end of the oscillator;
a first output end of the oscillator is used as an output end of the phase-locked loop circuit, and a second output end of the oscillator is connected with an input end of the seventh filter;
and the output end of the seventh filter is connected with the input end of the frequency divider.
Further, the first filter is a high-pass filter, the second filter is an LC band-pass filter, and the third filter is a low-pass filter.
Further, the fourth filter is a SAW band-pass filter, and the fifth filter is a band-pass cavity filter.
Further, the sixth filter and the seventh filter are both low-pass filters.
The utility model has the advantages of it is following:
1. compared with the prior art, the utility model only adopts three-stage filtering, and omits the use of an isolator, and still can achieve the ideal stray suppression effect;
2. under the condition that the stray suppression effect is not reduced, the use of electronic elements is reduced, so that the manufacturing cost of the product is greatly reduced.
Drawings
Fig. 1 is a circuit diagram of a Ka intermediate frequency down-conversion module according to the present invention;
fig. 2 is a circuit diagram of a local oscillator source assembly in the Ka intermediate frequency down conversion module of the present invention;
in the figure, 1-single-pole double-throw switch, 2-first amplifier, 3-first filter, 4-frequency mixer, 5-local oscillation source component, 6-second filter, 7-second amplifier, 8-third filter, 9-attenuator, 10-frequency multiplier, 11-DDS signal generator, 12-fourth filter, 13-third amplifier, 14-fifth filter, 15-phase discriminator, 16-charge pump, 17-sixth filter, 18-oscillator, 19-frequency divider and 20-seventh filter.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following description will clearly describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are 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 without creative work belong to the protection scope of the present invention.
The embodiment provides a Ka intermediate frequency down-conversion module for a microwave transceiver module, which includes a single-pole double-throw switch 1, a first amplifier 2, a first filter 3, a mixer 4, a local vibration source component 5, a second filter 6, a second amplifier 7, a third filter 8 and an attenuator 9; a first fixed end of the single-pole double-throw switch 1 is connected with an intermediate frequency joint test interface, a second fixed end of the single-pole double-throw switch 1 is connected with a Ka input channel, and a movable end of the single-pole double-throw switch 1 is connected with an input end of the first amplifier 2; the output end of the first amplifier 2 is connected with the input end of the first filter 3; the output end of the first filter 3 is connected with the first input end of the mixer 4; a second input end of the mixer 4 is connected to an output end of the local oscillation source component 5, and an output end of the mixer 4 is connected to an input end of the second filter 6; the output end of the second filter 6 is connected with the input end of the second amplifier 7; the output end of the second amplifier 7 is connected with the input end of the third filter 8; the output end of the third filter 8 is connected with the input end of the attenuator 9; and the output end of the attenuator 9 is used as the output end of the Ka intermediate frequency down-conversion module to output down-conversion signals.
The Ka intermediate frequency down-conversion module comprises two optional input ends which are respectively an intermediate frequency joint test interface of a panel and Ka channel input, a Ka wave band signal firstly passes through a first amplifier 2 after being input, the signal is amplified and then enters a first filter 3, namely a high-pass filter, for first filtering, the frequency of the Ka wave band signal is higher, and the first filter 3 can reduce a large amount of stray by using the high-pass filter; the signal after the first filtering and the local oscillation signal generated by the local oscillation source component 5 are mixed by the down-mixer 4 to generate an intermediate frequency signal, and the intermediate frequency signal passes through the second filter 6 (i.e., LC band pass filter), the second amplifier 7, the third filter 8 (i.e., low pass filter) and the attenuator 9 in sequence to finally output a corresponding signal.
The second filter 6 is an LC band-pass filter which determines the group delay index of the down-conversion channel, and the other devices are broadband devices, so that the group delay influence can be ignored.
The local vibration source component 5 comprises a frequency multiplier 10, a DDS signal generator 11, a fourth filter 12, a phase-locked loop circuit, a third amplifier 13 and a fifth filter 14; the input end of the frequency multiplier 10 receives a clock signal, and the output end thereof is connected with the input end of the DDS signal generator 11; the output end of the DDS signal generator 11 is connected to the input end of the fourth filter 12; the output end of the fourth filter 12 is connected to the input end of the phase-locked loop circuit; the output end of the phase-locked loop circuit is connected with the input end of the third amplifier 13; the output end of the third amplifier 13 is connected with the input end of a fifth filter 14; an output end of the fifth filter 14 serves as an output end of the local oscillator source assembly 5 to output a local oscillator signal to a second input end of the mixer 4; the fourth filter 12 is a SAW band pass filter, and the fifth filter 14 is a band pass cavity filter.
The phase-locked loop circuit comprises a phase detector 15, a charge pump 16, a sixth filter 17, an oscillator 18, a frequency divider 19 and a seventh filter 20; a first input end of the phase detector 15 serving as an input end of the phase-locked loop circuit is connected to the output end of the fourth filter 12, a second input end of the phase detector is connected to the output end of the frequency divider 19, and an output end of the phase detector is connected to the input end of the charge pump 16; the output end of the charge pump 16 is connected with the input end of the sixth filter 17; the output end of the sixth filter 17 is connected with the input end of the oscillator 18; a first output terminal of the oscillator 18 is used as an output terminal of the phase-locked loop circuit, and a second output terminal thereof is connected to an input terminal of the seventh filter 20; the output terminal of the seventh filter 20 is connected to the input terminal of the frequency divider 19, wherein the sixth filter 17 and the seventh filter 20 are both low-pass filters.
Claims (6)
1. The Ka intermediate frequency down-conversion module for the microwave transceiver module is characterized by comprising a single-pole double-throw switch, a first amplifier, a first filter, a mixer, a local oscillator source component, a second filter, a second amplifier, a third filter and an attenuator;
a first fixed end of the single-pole double-throw switch is connected with the intermediate frequency joint test interface, a second fixed end of the single-pole double-throw switch is connected with a Ka input channel, and a movable end of the single-pole double-throw switch is connected with the input end of the first amplifier;
the output end of the first amplifier is connected with the input end of the first filter;
the output end of the first filter is connected with the first input end of the mixer;
a second input end of the frequency mixer is connected with an output end of the local oscillator source component, and an output end of the frequency mixer is connected with an input end of the second filter;
the output end of the second filter is connected with the input end of the second amplifier;
the output end of the second amplifier is connected with the input end of the third filter;
the output end of the third filter is connected with the input end of the attenuator;
and the output end of the attenuator is used as the output end of the Ka intermediate frequency down-conversion module to output down-conversion signals.
2. The Ka intermediate frequency down-conversion module for a microwave transceiver module according to claim 1, wherein the local oscillator source assembly includes a frequency multiplier, a DDS signal generator, a fourth filter, a phase-locked loop circuit, a third amplifier, and a fifth filter;
the input end of the frequency multiplier receives a clock signal, and the output end of the frequency multiplier is connected with the input end of the DDS signal generator;
the output end of the DDS signal generator is connected with the input end of the fourth filter;
the output end of the fourth filter is connected with the input end of the phase-locked loop circuit;
the output end of the phase-locked loop circuit is connected with the input end of the third amplifier;
the output end of the third amplifier is connected with the input end of a fifth filter;
and the output end of the fifth filter is used as the output end of the local oscillator source component to output a local oscillator signal to the second input end of the frequency mixer.
3. The Ka intermediate frequency down-conversion module for a microwave transceiver module according to claim 2, wherein the phase-locked loop circuit comprises a phase detector, a charge pump, a sixth filter, an oscillator, a frequency divider, and a seventh filter;
the first input end of the phase discriminator is used as the input end of the phase-locked loop circuit and is connected with the output end of the fourth filter, the second input end of the phase discriminator is connected with the output end of the frequency divider, and the output end of the phase discriminator is connected with the input end of the charge pump;
the output end of the charge pump is connected with the input end of the sixth filter;
the output end of the sixth filter is connected with the input end of the oscillator;
a first output end of the oscillator is used as an output end of the phase-locked loop circuit, and a second output end of the oscillator is connected with an input end of the seventh filter;
and the output end of the seventh filter is connected with the input end of the frequency divider.
4. The Ka if down-conversion module of claim 1, wherein the first filter is a high pass filter, the second filter is an LC band pass filter, and the third filter is a low pass filter.
5. The Ka if down-conversion module of claim 2, wherein the fourth filter is a SAW band pass filter and the fifth filter is a band pass cavity filter.
6. The Ka intermediate frequency down-conversion module for a microwave transceiver module according to claim 3, wherein the sixth filter and the seventh filter are both low pass filters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922016796.0U CN210246748U (en) | 2019-11-20 | 2019-11-20 | Ka intermediate frequency down-conversion module for microwave transceiver module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922016796.0U CN210246748U (en) | 2019-11-20 | 2019-11-20 | Ka intermediate frequency down-conversion module for microwave transceiver module |
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| Publication Number | Publication Date |
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| CN210246748U true CN210246748U (en) | 2020-04-03 |
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| CN201922016796.0U Active CN210246748U (en) | 2019-11-20 | 2019-11-20 | Ka intermediate frequency down-conversion module for microwave transceiver module |
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- 2019-11-20 CN CN201922016796.0U patent/CN210246748U/en active Active
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