CN210744118U - Vehicle-mounted signal receiving phase-shifting synthesis network - Google Patents
Vehicle-mounted signal receiving phase-shifting synthesis network Download PDFInfo
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- CN210744118U CN210744118U CN201922276751.7U CN201922276751U CN210744118U CN 210744118 U CN210744118 U CN 210744118U CN 201922276751 U CN201922276751 U CN 201922276751U CN 210744118 U CN210744118 U CN 210744118U
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Abstract
The utility model discloses a vehicle-mounted signal reception phase shift synthesis network, put and switch filter network, numerical control attenuation including the low noise and enlarge the module and phase shift synthesis network, the low noise put and switch filter network receive poor signal from the antenna and carry out the filtering and enlarge, signal transmission after the filtering is enlargied carries out the attenuation to numerical control attenuation and enlarges the module and enlarge, the signal after the attenuation is enlargied with the signal move the phase shift synthesis network and handle the back output. The phase-shifting synthesis network is simple in structure, small in size, capable of tracking vehicle-mounted antenna signals and capable of outputting the signals subjected to phase-shifting synthesis to facilitate signal processing when applied to vehicle-mounted equipment. The difference signal received from the antenna is controlled by switch filtering, attenuation and amplification, and the sum signal is completed at the same time, so that the phase-shifting synthesis processing of the difference signal is realized and then the difference signal is output.
Description
Technical Field
The utility model belongs to the technical field of wireless communication, specifically speaking relates to a vehicle-mounted signal reception phase shift synthetic network.
Background
With the development of society and the progress of technology, people have stronger and stronger requirements on high-speed and large-capacity wireless communication, some current wireless communication technologies are limited by limited bandwidth and channel resources and are difficult to meet the requirements of people, and millimeter wave frequency bands have rich spectrum resources and can meet the requirements of high-speed wireless communication application. The unique technical advantages of the phased array technology can greatly improve the performance of the millimeter wave communication system.
The phase shifter is a control element for controlling a phase change of a signal, and is widely applied to a radar system, a microwave communication system, and a measurement system. The phase shifter is used as a core component of a phased array system and plays a critical role in the performance of the whole system.
The phase-shift synthesis is to process the received difference signal, output the phase-shift synthesized signal, and process the signal by a processor to realize the analysis of the signal. The traditional phase-shifting receiving network has a complex structure and a large volume, and is not suitable for vehicle-mounted communication equipment.
SUMMERY OF THE UTILITY MODEL
To foretell not enough among the prior art, the utility model provides a synthetic network of phase shift is received to on-vehicle signal, should move synthetic network simple structure phase, small in size uses on the mobile unit, can trail vehicle antenna signal, and the signal processing of being convenient for after the synthetic is moved to the output phase.
In order to achieve the above object, the utility model discloses a solution is: a vehicle-mounted signal receiving phase-shifting synthesis network comprises a low-noise amplification and switching filter network, a numerical control attenuation amplification module and a phase-shifting synthesis network, wherein the low-noise amplification and switching filter network receives a difference signal from an antenna and performs filtering amplification, the filtered and amplified signal is transmitted to the numerical control attenuation amplification module to be attenuated and amplified, the attenuated and amplified signal and a sum signal are output after phase-shifting synthesis processing is performed on the phase-shifting synthesis network, the intensity of the difference signal is-115 dBm to-25 dBm, the intensity of the sum signal is-66 dBm to 4dBm, and the intensity of the output signal after the phase-shifting synthesis processing is-70 dBm to 0 dBm.
The low-noise amplifier and switch filter network comprises a first switch filter component, wherein the input end of the first switch filter component receives a difference signal from an antenna, and the first switch filter component realizes selective filtering of the signal; the filtered signals are transmitted to a first low-noise amplifier for amplification, the output end of the first low-noise amplifier is connected with the input end of a temperature compensation attenuator, the temperature compensation attenuator attenuates the signals, and the attenuated signals are transmitted to a second amplifier for amplification; the output end of the second amplifier is connected with the input end of the first attenuator, and the first attenuator attenuates the input signal; the output end of the first attenuator is connected with the input end of the second switch filter component, the attenuated signals are filtered again through the second switch filter component, the filtered signals are transmitted to the second attenuator to be attenuated again, and the output end of the second attenuator is connected with the input end of the numerical control attenuation amplification module.
The digital control attenuation amplification module comprises a third amplifier, the input end of the third amplifier is connected with the output end of a second attenuator in the low-noise amplification and switch filter network, the signal attenuated by the second attenuator is input to the third amplifier for amplification, the output end of the third amplifier is connected with the output end of the digital control attenuator, and the digital control attenuator attenuates the amplified signal; the output end of the numerical control attenuator is connected with the input end of the fourth amplifier, the attenuated signals are amplified, and the amplified signals are input into the phase-shifting synthesis network and subjected to phase-shifting synthesis processing with the sum signal.
The phase-shifting synthesis network comprises a phase shifter, wherein the phase of a signal which is output by the output end of a fourth amplifier in the numerical control attenuation amplification module and subjected to attenuation amplification is shifted by the phase shifter, the output end of the phase shifter is connected with one input end of a combiner, the signal and the signal are firstly divided into two paths by a power divider after being connected into the phase-shifting synthesis network, one path of the signal is directly output as a demodulation signal, the other path of the signal is input into a fifth amplifier, the signal is input into the combiner after being amplified by the fifth amplifier, and the signal and a difference signal are synthesized in the combiner and then output. The demodulation and signal strength was-70 dBm to 0 dBm.
The receiving phase-shifting synthesis network also comprises a power module which supplies power for the low-noise amplifier and switch filter network, the numerical control attenuation amplifier module and the phase-shifting synthesis network.
The antenna and the low noise amplifier and switch filter network are also connected with a feed source, and the difference signal is received by the antenna and input into the low noise amplifier and switch filter network after passing through the feed source.
The utility model has the advantages that:
(1) the phase-shifting synthesis network is simple in structure, small in size, capable of tracking vehicle-mounted antenna signals and capable of outputting the signals subjected to phase-shifting synthesis to facilitate signal processing when applied to vehicle-mounted equipment.
(2) The difference signal received from the antenna is controlled by switch filtering, attenuation and amplification, and the sum signal is completed at the same time, so that the phase-shifting synthesis processing of the difference signal is realized and then the difference signal is output.
Drawings
FIG. 1 is a functional block diagram of a receive phase-shifting synthesis network according to the present invention;
fig. 2 is a schematic diagram of the receiving phase-shifting synthesis network of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1 and 2, a vehicle-mounted signal receiving phase-shifting synthesis network comprises a low-noise amplifying and switching filter network, a numerical control attenuation amplifying module and a phase-shifting synthesis network, wherein the low-noise amplifying and switching filter network receives a difference signal from an antenna and performs filtering amplification, the filtered and amplified signal is transmitted to the numerical control attenuation amplifying module to perform attenuation amplification, the attenuated and amplified signal and a sum signal are output after phase-shifting synthesis processing is performed on the phase-shifting synthesis network, the intensity of the difference signal is-115 dBm to-25 dBm, the intensity of the sum signal is-66 dBm to 4dBm, and the intensity of the output signal after the phase-shifting synthesis processing is-70 dBm to 0 dBm.
The low-noise amplifier and switch filter network comprises a first switch filter component, wherein the input end of the first switch filter component receives a difference signal from an antenna, and the first switch filter component realizes selective filtering of the signal; the filtered signals are transmitted to a first low-noise amplifier for amplification, the output end of the first low-noise amplifier is connected with the input end of a temperature compensation attenuator, the temperature compensation attenuator attenuates the signals, and the attenuated signals are transmitted to a second amplifier for amplification; the output end of the second amplifier is connected with the input end of the first attenuator, and the first attenuator attenuates the input signal; the output end of the first attenuator is connected with the input end of the second switch filter component, the attenuated signals are filtered again through the second switch filter component, the filtered signals are transmitted to the second attenuator to be attenuated again, and the output end of the second attenuator is connected with the input end of the numerical control attenuation amplification module.
The digital control attenuation amplification module comprises a third amplifier, the input end of the third amplifier is connected with the output end of a second attenuator in the low-noise amplification and switch filter network, the signal attenuated by the second attenuator is input to the third amplifier for amplification, the output end of the third amplifier is connected with the output end of the digital control attenuator, and the digital control attenuator attenuates the amplified signal; the output end of the numerical control attenuator is connected with the input end of the fourth amplifier, the attenuated signals are amplified, and the amplified signals are input into the phase-shifting synthesis network and subjected to phase-shifting synthesis processing with the sum signal.
The phase-shifting synthesis network comprises a phase shifter, wherein the phase of a signal which is output by the output end of a fourth amplifier in the numerical control attenuation amplification module and subjected to attenuation amplification is shifted by the phase shifter, the output end of the phase shifter is connected with one input end of a combiner, the signal and the signal are firstly divided into two paths by a power divider after being connected into the phase-shifting synthesis network, one path of the signal is directly output as a demodulation signal, the other path of the signal is input into a fifth amplifier, the signal is input into the combiner after being amplified by the fifth amplifier, and the signal and a difference signal are synthesized in the combiner and then output. The demodulation and signal strength was-70 dBm to 0 dBm.
The receiving phase-shifting synthesis network also comprises a power module which supplies power for the low-noise amplifier and switch filter network, the numerical control attenuation amplifier module and the phase-shifting synthesis network.
The antenna and the low noise amplifier and switch filter network are also connected with a feed source, and the difference signal is received by the antenna and input into the low noise amplifier and switch filter network after passing through the feed source.
The difference signal is selectively filtered by a switch filter assembly, and then is amplified, filtered, phase-shifted and the like to realize that the signal intensity ratio and the signal are smaller than 10dBm, and then is synthesized to output the signal with the signal intensity of-70 dBm-0 dBm, and the continuous reading gain of the difference signal is-6 dB-26 dB.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (7)
1. A vehicle-mounted signal receiving phase-shifting synthesis network is characterized in that: the low-noise amplifier and switch filter network receives a difference signal from an antenna and performs filtering amplification, the filtered and amplified signal is transmitted to the numerical control attenuation amplifier module for attenuation amplification, and the attenuated and amplified signal and a sum signal are output after being subjected to phase-shifting synthesis processing in the phase-shifting synthesis network.
2. The vehicle signal receiving phase-shifting synthesis network of claim 1, wherein: the low noise amplifier and switch filter network comprises a first switch filter component, wherein the input end of the first switch filter component receives a difference signal from an antenna and selects filtering; the filtered signals are transmitted to a first low-noise amplifier for amplification, the output end of the first low-noise amplifier is connected with the input end of a temperature compensation attenuator, the temperature compensation attenuator attenuates the signals, and the attenuated signals are transmitted to a second amplifier for amplification; the output end of the second amplifier is connected with the input end of the first attenuator, and the first attenuator attenuates the input signal; the output end of the first attenuator is connected with the input end of the second switch filter component, the attenuated signals are filtered again through the second switch filter component, the filtered signals are transmitted to the second attenuator to be attenuated again, and the output end of the second attenuator is connected with the input end of the numerical control attenuation amplification module.
3. The vehicle signal receiving phase-shifting synthesis network of claim 1, wherein: the digital control attenuation and amplification module comprises a third amplifier, the input end of the third amplifier is connected with the output end of the low-noise amplification and switch filter network and is used for amplifying the filtered and amplified signals, the output end of the third amplifier is connected with the output end of the digital control attenuator, and the digital control attenuator is used for attenuating the amplified signals; the output end of the numerical control attenuator is connected with the input end of the fourth amplifier, the attenuated signals are amplified, and the amplified signals are input into the phase-shifting synthesis network and subjected to phase-shifting synthesis processing with the sum signal.
4. The vehicle signal receiving phase-shifting synthesis network of claim 1, wherein: the phase-shifting synthesis network comprises a phase shifter, wherein the phase of a signal subjected to attenuation amplification and output by the numerical control attenuation amplification module is shifted by the phase shifter, the output end of the phase shifter is connected with one input end of the combiner, the signal is divided into two paths by the power divider after being connected into the phase-shifting synthesis network, one path of the signal is directly output as a demodulation signal, the other path of the signal is input into the fifth amplifier, the signal is input into the combiner after being amplified by the fifth amplifier, and the demodulation signal and the difference signal are synthesized in the combiner and then output.
5. The vehicle signal receiving phase-shifting synthesis network of claim 1, wherein: the receiving phase-shifting synthesis network also comprises a power module which supplies power for the low-noise amplifier and switch filter network, the numerical control attenuation amplifier module and the phase-shifting synthesis network.
6. The vehicle signal receiving phase-shifting synthesis network of claim 1, wherein: the antenna and the low noise amplifier and switch filter network are also connected with a feed source, and the difference signal is received by the antenna and input into the low noise amplifier and switch filter network after passing through the feed source.
7. The vehicle signal receiving phase-shifting synthesis network of claim 1, wherein: the intensity of the difference signal is-115 dBm-25 dBm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922276751.7U CN210744118U (en) | 2019-12-17 | 2019-12-17 | Vehicle-mounted signal receiving phase-shifting synthesis network |
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| CN201922276751.7U CN210744118U (en) | 2019-12-17 | 2019-12-17 | Vehicle-mounted signal receiving phase-shifting synthesis network |
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| CN210744118U true CN210744118U (en) | 2020-06-12 |
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