CN115242262A - Small multipurpose satellite-borne communication transceiving front-end device - Google Patents
Small multipurpose satellite-borne communication transceiving front-end device Download PDFInfo
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- CN115242262A CN115242262A CN202210876382.9A CN202210876382A CN115242262A CN 115242262 A CN115242262 A CN 115242262A CN 202210876382 A CN202210876382 A CN 202210876382A CN 115242262 A CN115242262 A CN 115242262A
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- 238000004891 communication Methods 0.000 title claims abstract description 34
- 238000005259 measurement Methods 0.000 claims abstract description 127
- 238000001914 filtration Methods 0.000 claims abstract description 33
- 238000012545 processing Methods 0.000 claims abstract description 7
- 230000010354 integration Effects 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 abstract description 2
- 238000003780 insertion Methods 0.000 description 9
- 230000037431 insertion Effects 0.000 description 9
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- 238000010586 diagram Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
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Abstract
The invention discloses a micro multipurpose satellite-borne communication transceiving front-end device which is used for sequentially filtering and amplifying signals received by a ground measurement and control transmitter and then outputting the signals from a ground antenna, and is also used for receiving a ground measurement and control front-end module which is used for filtering the signals of the ground antenna and then outputting the signals from a ground measurement and control receiver. The signal processing module is used for receiving the signal of the air antenna arranged on the air front end module and outputting the signal after filtering. And the Wi F i front-end module is used for filtering the signals received by the Wi F i receiving and transmitting component and then outputting the signals from the Wi F i antenna, and is also used for filtering the signals received by the Wi F i antenna and then outputting the signals from the Wi F i receiving and transmitting component. The invention has the advantages of small volume, low cost, low power consumption, simple and reliable structure, high integration level and the like. The modules are independent from each other, wireless interference among ground measurement and control communication, air-air communication and WiFi communication is effectively avoided, the quality of wireless signals of various functions is improved, and meanwhile, the aerospace radiation-resistant performance is good.
Description
Technical Field
The invention belongs to the field of inter-satellite communication, and particularly relates to a small multipurpose satellite-borne communication transmitting and receiving front-end device.
Background
According to the communication requirement of the service platform outside the cabin of the space station, a ground measurement and control communication wireless link, a space-air communication wireless link and a WiFi communication wireless link need to be established, and each functional signal needs to complete narrow-band filtering of a received signal and gating and amplification of a transmitted signal through a communication radio frequency front end. How to design, the wireless interference among ground measurement and control communication, air-to-air communication and WiFi communication is reduced to the minimum, and the quality of wireless signals with various functions is improved.
Disclosure of Invention
The invention aims to provide a micro multipurpose satellite-borne communication transceiving front-end device, which comprises a ground measurement and control front-end module, an empty front-end module and a WiFi front-end module;
the ground measurement and control front-end module comprises a ground measurement and control transmitter, a ground antenna and a ground measurement and control receiver, and is used for sequentially filtering and amplifying signals received by the ground measurement and control transmitter and then outputting the signals from the ground antenna, and also used for receiving signals of the ground antenna and outputting the signals from the ground measurement and control receiver after filtering;
the empty front-end module is used for receiving signals of empty antennas arranged on the empty front-end module, filtering and outputting the signals;
the WiFi front-end module comprises a WiFi transceiving component and a WiFi antenna, is used for outputting signals received by the WiFi transceiving component from the WiFi antenna after filtering, and is also used for outputting signals received by the WiFi antenna from the WiFi transceiving component after filtering.
Further preferably, the ground measurement and control front-end module further comprises a first measurement and control interface, a second measurement and control interface, a measurement and control filter, a measurement and control amplifier, a measurement and control duplexer and a measurement and control power divider, and the ground antenna comprises a first antenna and a second antenna;
the ground measurement and control transmitter is in signal connection with one end of the measurement and control filter through a first measurement and control interface; the other end of the measurement and control filter is in signal connection with one end of the measurement and control amplifier signal; the other end of the measurement and control amplifier is in signal connection with one end of the measurement and control duplexer; the measurement and control duplexer is also respectively connected with one end of the measurement and control power divider and the comparison and control receiver through a second measurement and control interface; the other end of the measurement and control power divider is in signal connection with the first antenna and the second antenna respectively.
The measurement and control filter is used for receiving and filtering signals received from the ground measurement and control transmitter; the measurement and control duplexer is used for sending the amplified signals to the measurement and control power divider and outputting the signals through the first antenna and the second antenna.
Further preferably, the first antenna and the second antenna are further configured to receive signals and input the signals to the measurement and control duplexer through the measurement and control power divider, and the measurement and control duplexer is configured to filter the signals and input the signals to the ground measurement and control receiver through the second measurement and control interface.
Further preferably, the air-space front-end module further includes an air-space switch, an air-space filter, and an air-space receiver, and the air-space antenna includes a third antenna and a fourth antenna;
and the air-air switch is respectively in signal connection with the third antenna, the fourth antenna and one end of the air-air filter, and the other end of the air-air filter is in signal connection with the air-air receiver.
Specifically, the third antenna and the fourth antenna are used for respectively receiving signals, and the air-to-air switch is used for switching and receiving a signal of one of the third antenna and the fourth antenna; and the air-space filter is used for receiving the signal output by the air-space switch, performing filtering processing and outputting the signal to the air-space receiver.
Further preferably, the WiFi front end module further includes a WiFi switch combination unit, a first WiFi filter, and a second WiFi filter; the WiFi transmitting and receiving component comprises a first WiFi transceiver, a second WiFi transceiver, a third WiFi transceiver and a fourth WiFi transceiver; the WiFi antenna comprises a fifth antenna and a sixth antenna;
one side of the WiFi switch combination unit is respectively in signal connection with the first WiFi transceiver, the second WiFi transceiver, the third WiFi transceiver and the fourth WiFi transceiver, and the other side of the WiFi switch combination unit is respectively in signal connection with one end of the first WiFi filter and one end of the second WiFi filter; the other end of the first WiFi filter is in signal connection with the fifth antenna, and the other end of the second WiFi filter is in signal connection with the sixth antenna.
The first WiFi transceiver, the second WiFi transceiver, the third WiFi transceiver and the fourth WiFi transceiver are respectively used for receiving signals;
the WiFi switch combination unit is used for switching and receiving signals of the first WiFi transceiver and the second WiFi transceiver or signals of the third WiFi transceiver and the fourth WiFi transceiver;
the first WiFi filter is used for receiving signals of the third WiFi transceiver and the fourth WiFi transceiver, filtering and processing the signals and outputting the signals to the fifth antenna;
the first WiFi filter is used for receiving signals of the first WiFi transceiver and the second WiFi transceiver, filtering the signals and outputting the signals to the sixth antenna.
Further preferably, the fifth antenna and the sixth antenna are also used for receiving signals;
the first WiFi filter is also used for receiving signals of the fifth antenna for filtering processing and inputting the signals to the third WiFi transceiver and the fourth WiFi transceiver through the WiFi switch combination switch;
the second WiFi filter is also used for receiving signals of the sixth antenna, filtering the signals, and inputting the signals to the first WiFi transceiver and the second WiFi transceiver through the WiFi switch combination switch.
The WiFi switch combination unit comprises a first WiFi switch chip and a second WiFi switch chip;
the V1 port of the first WiFi switch chip is electrically connected with the V3 port of the second WiFi switch chip and used for receiving an external switching instruction; the V2 port of the first WiFi switch chip is electrically connected with the V4 port of the second WiFi switch chip and used for receiving an external switching instruction;
the RF1 end of the first WiFi switch chip is electrically connected with the first WiFi filter, the RF2 end of the first WiFi switch chip is electrically connected with the first WiFi transceiver, and the RF3 end of the first WiFi switch chip is electrically connected with the second WiFi transceiver;
the RF4 end of the second WiFi switch chip is electrically connected with the second WiFi filter, the RF5 end of the second WiFi switch chip is electrically connected with the third WiFi transceiver, and the RF6 end of the second WiFi switch chip is electrically connected with the fourth WiFi transceiver.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:
the invention relates to a micro multipurpose satellite-borne communication transceiving front-end device which has the advantages of small volume, low cost, low power consumption, simple and reliable structure, high integration level and the like. The modules are independent from each other, wireless interference among ground measurement and control communication, air-air communication and WiFi communication is effectively avoided, the quality of wireless signals of various functions is improved, and meanwhile, the aerospace radiation-resistant performance is good.
Drawings
Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.
FIG. 1 is a block diagram of a small multipurpose satellite-borne communication transceiver front-end device according to an embodiment of the present invention;
fig. 2 is a block diagram of a WiFi switch combination unit according to an embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
The invention provides a small multipurpose satellite-borne communication transceiving front-end device, which is further described in detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims.
Examples
Referring to fig. 1 and fig. 2, the present embodiment provides a small-scale multipurpose satellite-borne communication transceiving front-end device, which can be divided into three modules, namely, a ground measurement and control front-end module, an air front-end module and a WiFi front-end module.
Referring to fig. 1, the ground measurement and control front-end module includes a ground measurement and control transmitter, a ground measurement and control receiver, a first measurement and control interface, a second measurement and control interface, a measurement and control filter, a measurement and control amplifier, a measurement and control duplexer, a measurement and control power divider, a first antenna, and a second antenna.
The ground measurement and control transmitter is in signal connection with one end of the measurement and control filter through the first measurement and control interface. The other end of the measurement and control filter is in signal connection with one end of the measurement and control amplifier signal. The other end of the measurement and control amplifier is in signal connection with one end of the measurement and control duplexer. The measurement and control duplexer is also respectively connected with one end of the measurement and control power divider and the comparison and control receiver through a second measurement and control interface. The other end of the measurement and control power divider is in signal connection with the first antenna and the second antenna respectively.
The signal from the first antenna and the second antenna is sent to the ground measurement and control receiver through the measurement and control power divider, the measurement and control duplexer and the second measurement and control interface in sequence. Meanwhile, signals from the ground measurement and control transmitter can be transmitted to the first antenna and the second antenna after sequentially passing through the first measurement and control interface, the measurement and control filter, the measurement and control amplifier, the measurement and control duplexer and the measurement and control power divider.
Specifically, the measurement and control power divider is configured to receive a signal from the first antenna or the second antenna and send the signal to the measurement and control duplexer, and the measurement and control power divider is configured to receive a signal from the measurement and control duplexer and send the signal to the first antenna and the second antenna. The measurement and control duplexer is used for filtering the signal from the measurement and control power divider and then sending the signal to the second measurement and control interface, and the measurement and control duplexer is used for filtering the signal from the measurement and control amplifier and then sending the signal to the measurement and control power divider. The measurement and control filter is used for filtering the signal from the first measurement and control interface and sending the signal to the measurement and control amplifier; the measurement and control amplifier is used for amplifying the signals from the measurement and control filter and then sending the signals to the measurement and control duplexer. Preferably, the insertion loss of the measurement and control power divider is less than 0.7dB, the insertion loss of the first measurement and control interface and the second measurement and control interface is less than 0.3dB, the receiving and transmitting isolation of the measurement and control duplexer is better than 70dBc, the insertion loss is less than 1dB, the receiving and transmitting bandwidth is 20MHz, the insertion loss of the measurement and control filter is less than 0.8dB, the bandwidth is 30MHz, the 55dBc is restrained at the positions of f0 +/-50 MHz, and the gain of the measurement and control amplifier is 17dB.
Referring to fig. 1, in the present embodiment, the null front-end module includes a null switch, a null filter, a null receiver, a third antenna, and a fourth antenna. And the air-air switch is respectively in signal connection with the third antenna, the fourth antenna and one end of the air-air filter, and the other end of the air-air filter is in signal connection with the air-air receiver.
Specifically, the signals from the third antenna and the fourth antenna are output to the space-air receiver through the space-air switch and the space-air filter. When the air-space switch responds to an external first switching instruction, receiving a signal from a third antenna and sending the signal to an air-space filter; and when the empty space switch responds to an external second switching instruction, the empty space switch receives a signal from the fourth antenna and sends the signal to the empty space filter. And the air-space filter filters the signal from the air-space switch and then sends the signal to the air-space receiver. Preferably, the insertion loss of the air-air switch is less than 0.7dB, the bandwidth of the air-air filter is 25MHz, the insertion loss is less than 0.9dB, f 0 60dBc was suppressed at 50 MHz.
Referring to fig. 1 and 2, the WiFi front end module includes a WiFi switch combination unit, a first WiFi filter, a second WiFi filter, a first WiFi transceiver, a second WiFi transceiver, a third WiFi transceiver, a fourth WiFi transceiver, a fifth antenna, and a sixth antenna. And the first WiFi filter and the second WiFi filter have the same design parameters.
One side of the WiFi switch combination unit is in signal connection with the first WiFi transceiver, the second WiFi transceiver, the third WiFi transceiver and the fourth WiFi transceiver respectively, and the other side of the WiFi switch combination unit is in signal connection with one end of the first WiFi filter and one end of the second WiFi filter respectively. The other end of the first WiFi filter is in signal connection with the fifth antenna, and the other end of the second WiFi filter is in signal connection with the sixth antenna.
The WiFi front-end module is a receiving and transmitting common-frequency time division multiplexing module, receives in a time division mode, and the first WiFi filter transmits signals from the fifth antenna to the third WiFi transceiver and the fourth WiFi transceiver after filtering and gating of the WiFi switch combination unit. And the second WiFi filter is used for filtering the signal from the sixth antenna and transmitting the signal to the first WiFi transceiver and the second WiFi transceiver after the signal is gated by the WiFi switch combination unit. And time division transmission is carried out, the WiFi switch combination unit gates signals of the third WiFi transceiver and the fourth WiFi transceiver to be transmitted to the fifth antenna through the first WiFi filter, and the WiFi switch combination unit gates signals of the first WiFi transceiver and the second WiFi transceiver to be transmitted to the sixth antenna through the second WiFi filter. The WiFi switch combination unit responds to an external third switching instruction to gate the first WiFi transceiver and the third WiFi transceiver, and the WiFi switch combination unit responds to an external fourth switching instruction to gate the second WiFi transceiver and the fourth WiFi transceiver. Preferably, the insertion loss of the WiFi switch combination unit is less than 0.8dB, the insertion loss of the first WiFi filter and the second WiFi filter is less than 1.1dB, the bandwidth is 80MHz, f is larger than the sum of the first and second bandwidth, and the second bandwidth is larger than the sum of the first and second bandwidth 0 60dBc was suppressed at 70 MHz.
Referring to fig. 2, in the present embodiment, the WiFi switch combining unit includes a first WiFi switch chip and a second WiFi switch chip. The V1 port of the first WiFi switch chip is electrically connected with the V3 port of the second WiFi switch chip and is used for receiving a third switching instruction; and the V2 port of the first WiFi switch chip is electrically connected with the V4 port of the second WiFi switch chip and is used for receiving a fourth switching instruction. The WiFi switch chip is selected from a model sky13377, a micro packaging mode and insertion loss of 0.4dB.
The first WiFi switch chip RF1 end is electrically connected with the first WiFi filter, the first WiFi switch chip RF2 end is electrically connected with the first WiFi transceiver, and the first WiFi switch chip RF3 end is electrically connected with the second WiFi transceiver. The RF4 end of the second WiFi switch chip is electrically connected with the second WiFi filter, the RF5 end of the second WiFi switch chip is electrically connected with the third WiFi transceiver, and the RF6 end of the second WiFi switch chip is electrically connected with the fourth WiFi transceiver. When the WiFi switch combination unit responds to a third switching instruction, the RF2 end of the first WiFi switch chip is communicated with the RF1 end, and the RF4 end of the second WiFi switch chip is communicated with the RF5 end, so that signal input or signal output of the first WiFi transceiver and the third WiFi transceiver is realized. When the WiFi switch combination unit responds to the fourth switching instruction, the RF3 end of the first WiFi switch chip is communicated with the RF1 end, and the RF4 end of the second WiFi switch chip is communicated with the RF6 end, so that signal input or signal output of the second WiFi transceiver and the fourth WiFi transceiver is realized.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.
Claims (10)
1. A micro multipurpose satellite-borne communication transceiving front-end device is characterized by comprising a ground measurement and control front-end module, an empty front-end module and a WiFi front-end module;
the ground measurement and control front-end module comprises a ground measurement and control transmitter, a ground antenna and a ground measurement and control receiver, and is used for sequentially filtering and amplifying signals received by the ground measurement and control transmitter and then outputting the signals from the ground antenna, and also used for receiving signals of the ground antenna and outputting the signals from the ground measurement and control receiver after filtering;
the air front end module is used for receiving signals of an air antenna arranged on the air front end module, filtering and outputting the signals;
the WiFi front-end module comprises a WiFi transceiving component and a WiFi antenna, and is used for outputting signals received by the WiFi transceiving component after filtering the signals and outputting the signals from the WiFi transceiving component after filtering the signals received by the WiFi antenna.
2. The small multipurpose satellite-borne communication transceiving front-end device according to claim 1, wherein the ground measurement and control front-end module further comprises a first measurement and control interface, a second measurement and control interface, a measurement and control filter, a measurement and control amplifier, a measurement and control duplexer and a measurement and control power divider, and the ground antenna comprises a first antenna and a second antenna;
the ground measurement and control transmitter is in signal connection with one end of the measurement and control filter through the first measurement and control interface; the other end of the measurement and control filter is in signal connection with one end of the measurement and control amplifier signal; the other end of the measurement and control amplifier is in signal connection with one end of the measurement and control duplexer; the measurement and control duplexer is also in signal connection with one end of the measurement and control power divider and the comparison and control receiver through the second measurement and control interface respectively; the other end of the measurement and control power divider is in signal connection with the first antenna and the second antenna respectively.
3. The small multipurpose spaceborne communication transceiving front-end device according to claim 2, wherein the measurement and control filter is used for receiving and filtering signals received from the ground measurement and control transmitter; the measurement and control amplifier is used for amplifying the filtered signals, and the measurement and control duplexer is used for sending the amplified signals into the measurement and control power divider and passing through the first antenna and the second antenna for output.
4. The small multipurpose satellite-borne communication transceiving front-end device according to claim 2, wherein the first antenna and the second antenna are further configured to receive signals and input the signals to a measurement and control duplexer through the measurement and control power divider, and the measurement and control duplexer is configured to filter the signals and input the signals to the ground measurement and control receiver through the second measurement and control interface.
5. The small multipurpose spaceborne communication transceiving front-end device according to claim 1, wherein the null front-end module further comprises a null switch, a null filter and a null receiver, and the null antenna comprises a third antenna and a fourth antenna;
the air-air switch is respectively in signal connection with the third antenna, the fourth antenna and one end of the air-air filter, and the other end of the air-air filter is in signal connection with the air-air receiver.
6. The small multipurpose satellite-borne communication transceiving front-end device according to claim 5, wherein the third antenna and the fourth antenna are configured to receive signals respectively, and the air-to-air switch is configured to switch and receive a signal of one of the third antenna and the fourth antenna; and the air-air filter is used for receiving the signals output by the air-air switch, filtering and outputting the signals to the air-air receiver.
7. The small multipurpose satellite-borne communication transceiving front-end device according to claim 1, wherein the WiFi front-end module further comprises a WiFi switch combination unit, a first WiFi filter, a second WiFi filter; the WiFi transceiving component comprises a first WiFi transceiver, a second WiFi transceiver, a third WiFi transceiver and a fourth WiFi transceiver; the WiFi antenna comprises a fifth antenna and a sixth antenna;
one side of the WiFi switch combination unit is respectively in signal connection with the first WiFi transceiver, the second WiFi transceiver, the third WiFi transceiver and the fourth WiFi transceiver, and the other side of the WiFi switch combination unit is respectively in signal connection with one end of the first WiFi filter and one end of the second WiFi filter; the other end of the first WiFi filter is in signal connection with the fifth antenna, and the other end of the second WiFi filter is in signal connection with the sixth antenna.
8. The small multi-purpose space-borne communication transceiver front-end device according to claim 7, wherein the first WiFi transceiver, the second WiFi transceiver, the third WiFi transceiver, and the fourth WiFi transceiver are each configured to receive signals;
the WiFi switch combination unit is used for switching and receiving signals of the first WiFi transceiver and the second WiFi transceiver or signals of the third WiFi transceiver and the fourth WiFi transceiver;
the first WiFi filter is used for receiving signals of the third WiFi transceiver and the fourth WiFi transceiver, filtering the signals and outputting the signals to the fifth antenna;
the first WiFi filter is configured to receive a signal pair of the first WiFi transceiver and the second WiFi transceiver, perform filtering processing, and output the signal pair to the sixth antenna.
9. The small multi-purpose space-borne communication transceiving front-end device according to claim 7, wherein the fifth antenna and the sixth antenna are further configured to receive signals;
the first WiFi filter is also used for receiving signals of the fifth antenna for filtering processing, and inputting the signals to the third WiFi transceiver and the fourth WiFi transceiver through the WiFi switch combination switch;
and the second WiFi filter is also used for receiving the signal of the sixth antenna, filtering and processing the signal, and inputting the signal to the first WiFi transceiver and the second WiFi transceiver through the WiFi switch combination switch.
10. A small multipurpose satellite-borne communication transceiving front-end device according to claim 7, wherein the WiFi switch combination unit comprises a first WiFi switch chip and a second WiFi switch chip;
the V1 port of the first WiFi switch chip is electrically connected with the V3 port of the second WiFi switch chip and used for receiving an external switching instruction; the V2 port of the first WiFi switch chip is electrically connected with the V4 port of the second WiFi switch chip and used for receiving an external switching instruction;
the RF1 end of the first WiFi switch chip is electrically connected with the first WiFi filter, the RF2 end of the first WiFi switch chip is electrically connected with the first WiFi transceiver, and the RF3 end of the first WiFi switch chip is electrically connected with the second WiFi transceiver;
the RF4 end of the second WiFi switch chip is electrically connected with the second WiFi filter, the RF5 end of the second WiFi switch chip is electrically connected with the third WiFi transceiver, and the RF6 end of the second WiFi switch chip is electrically connected with the fourth WiFi transceiver.
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| CN202210876382.9A CN115242262A (en) | 2022-07-25 | 2022-07-25 | Small multipurpose satellite-borne communication transceiving front-end device |
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| CN202210876382.9A CN115242262A (en) | 2022-07-25 | 2022-07-25 | Small multipurpose satellite-borne communication transceiving front-end device |
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| CN112614325A (en) * | 2020-12-07 | 2021-04-06 | 上海卫星工程研究所 | Separated microsatellite measurement and control system, method and medium |
| CN214205533U (en) * | 2021-02-04 | 2021-09-14 | 重庆两江卫星移动通信有限公司 | Device applied to satellite mobile Internet of things communication signal receiving and transmitting |
| CN113938156A (en) * | 2021-09-27 | 2022-01-14 | 青岛海信移动通信技术股份有限公司 | Signal channel switching method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107947828A (en) * | 2017-11-21 | 2018-04-20 | 湖南瓴星空间信息技术有限公司 | A kind of spaceborne things-internet gateway and Internet of Things communication means |
| CN112398506A (en) * | 2019-01-31 | 2021-02-23 | 上海微小卫星工程中心 | Satellite-ground/relay integrated measurement and control system |
| CN111600616A (en) * | 2020-07-10 | 2020-08-28 | 锐石创芯（深圳）科技有限公司 | Radio frequency front end architecture, antenna device and communication terminal |
| CN112614325A (en) * | 2020-12-07 | 2021-04-06 | 上海卫星工程研究所 | Separated microsatellite measurement and control system, method and medium |
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