WO2016180173A1

WO2016180173A1 - Transceiver device for satellite ground station, and satellite communications system

Info

Publication number: WO2016180173A1
Application number: PCT/CN2016/079587
Authority: WO
Inventors: 薛兵
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-07-16
Filing date: 2016-04-18
Publication date: 2016-11-17
Also published as: CN106357320A

Abstract

Disclosed is a transceiver device for a satellite ground station. The transceiver device comprises an antenna module and an integral radio frequency module. The antenna module comprises an antenna and a feed. The integral radio frequency module comprises a housing. The housing is provided with a connection portion connected to the feed. The housing is also provided with an intermediate-frequency reception signal N head, an intermediate-frequency transmit signal N head, and a power supply N head. An orthomode transducer, a reception filter, a transmit filter, a low-noise amplifier, a power amplifier, a first frequency-mixer and a second frequency-mixer are integrated in the housing. The first frequency-mixer is connected to the intermediate-frequency reception signal N head, and the second frequency-mixer is connected to the intermediate-frequency transmit signal N head. Also disclosed is a satellite communications system. Embodiments of the present invention improve convenience in upgrading and maintaining devices, reduce costs while devices are integrated, improve the reliability and scalability of a system, and achieve platformization.

Description

Satellite ground station transceiver and satellite communication system

Technical field

The invention relates to the field of satellite communications, and in particular to a satellite ground station transceiver device and a satellite communication system.

Background technique

Satellite communication refers to the communication between two or more ground stations by using artificial satellites as relay stations to forward or reflect radio signals. The satellite communication system mainly includes four components: satellite, ground main station, ground terminal and ground satellite control center. The satellite includes a transponder for receiving ground station signals, amplifying, mixing, and amplifying the small signals, and then transmitting them to the ground station; the ground satellite control center is used to monitor the satellite state and to orbit and attitude of the satellite. Control, power, etc.; the ground main station is equivalent to a HUB, on the one hand connected to the ground terminal through satellite relay, and on the other hand through the gateway to the Internet, its RF system includes transceiver module, frequency conversion module, power amplifier module The low-noise radio receiving module, the antenna module and the antenna servo module; the ground terminal may be a voice device such as a telephone, a data transceiver device such as a computer, a video image device such as a video camera, or a television set that receives a satellite television signal.

Traditional broadband satellite communication systems include outboard equipment and inboard equipment. Among them, the extra-vehicle equipment includes satellite, extra-vehicle antenna, RF indoor unit and low-noise amplifier; the cabin equipment includes modem, complex tap, voice interface, data and LAN interface, video image interface, satellite TV receiver, antenna servo Track devices and terminal devices.

The satellite earth station transceiver includes the extra-vehicle antenna, radio frequency outdoor unit, low noise amplifier, etc., and is mainly used for receiving or transmitting signals, and processing of signals between satellites and in-cabin equipment.

The premise of satellite communication system to achieve normal communication is that the antenna beam is aimed at the satellite (referred to as the star), and the satellite here generally refers to the synchronous earth satellite above the Earth's equator. Satellite communication system The terminal antenna is installed on the ship deck or on the top of the car, and the ship and the vehicle are constantly moving. Therefore, if the terminal antenna beam of the satellite communication system wants to always be aimed at the satellite, it is necessary to effectively isolate the swing and movement of the carrier. That is, an effective terminal antenna tracking system and mathematical model need to be established.

The current tracking methods mainly include pure mechanical tracking, pure phased array antenna electric tracking, and mechanical and electronic comprehensive tracking. Since the electronic tracking technology and the phased array antenna electric tracking technology are still immature on the one hand, and the cost is very expensive on the other hand, it is only used on a few military systems. Currently, the civil system mainly uses mechanical tracking technology.

In general, there are three basic parameters indicating the direction of the transmitting and receiving antennas: the azimuth angle indicating the direction position, the elevation angle indicating the spatial angle, and the polarization alignment angle for polarization matching. The calculation of azimuth and elevation is the basis of the mobile satellite system, and is also the two basic parameters of the initial star-to-satellite and tracking satellites; the polarization alignment angle is mainly to ensure the polarization of the antenna and the polarization of the satellite beam whenever and wherever. the same. Azimuth rotation, ie horizontal rotation, requires +/-300 degrees of rotation; polarization alignment, ie pitch rotation, requires +/- 90 degrees of rotation.

In a conventional satellite ground station transceiver, each device from the intermediate frequency single board to the feed of the antenna module is discretely connected and not integrated, each requiring a large number of cables or waveguide connections, complicated wiring, and poor reliability. During installation and maintenance, the construction is extremely inconvenient, and there are certain safety hazards; when upgrading the frequency band or the device needs to be repaired, it is often necessary to transport the whole device to a designated place for repair by a special person, which is not only time-consuming and laborious, but also increases the investment cost.

Summary of the invention

The embodiment of the invention provides an integrated and platformized satellite ground station transceiver device and a satellite communication system, aiming at improving the convenience of upgrading or maintaining the satellite ground station transceiver device, reducing the investment cost and improving the reliability of the system. And expandability, to achieve the platform of the system.

To achieve the above objective, an embodiment of the present invention provides a satellite ground station transceiver device, including an antenna module and an integrated radio frequency module. The antenna module includes an antenna and a feed; the integrated RF module includes a housing, and the housing is provided with a connecting portion connected to the feed, the shell The body also has an intermediate frequency receiving signal N head, an intermediate frequency transmitting signal N head, and a power source N head; the housing is internally integrated with an orthogonal mode converter connected to the feed, and is connected to the orthogonal mode converter. a receive filter and a transmit filter, a low noise amplifier coupled to the receive filter, a power amplifier coupled to the transmit filter, a first mixer coupled to the low noise amplifier, and the power a second mixer connected to the amplifier; the first mixer is connected to the N-frequency receiving signal N-head, and the second mixer is connected to the N-frequency transmitting signal N-head.

In the above solution, the connection portion of the integrated radio frequency module and the feed source are fixedly connected through a waveguide.

In the above solution, the satellite ground station transceiver device further includes an intermediate frequency transceiver module and a first combiner, wherein

The first combiner is provided with a first interface, the other end is provided with a second interface and a third interface, and the second interface is connected to the N-frequency receiving signal N of the integrated radio frequency module, and the third interface is The intermediate frequency transmitting signal of the integrated radio frequency module is connected to the N head;

The intermediate frequency transceiver module includes a second combiner, an intermediate frequency transmitting unit, and an intermediate frequency receiving unit, wherein the second combiner has a fourth interface at one end and a fifth interface and a sixth interface at the other end, the fourth The interface is connected to the first interface of the first combiner, the fifth interface is connected to the intermediate frequency transmitting unit, and the sixth interface is connected to the intermediate frequency receiving unit.

In the above solution, the first combiner and the second combiner respectively comprise a low frequency cavity filter, a high frequency cavity filter, two capacitors, and a capacitor is connected to the low frequency cavity. Another capacitor is coupled between the input and output of the filter and between the input and output of the high frequency cavity filter.

In the above solution, the first combiner and the second combiner have a transmission frequency band of 950-1450 MHz, and a receiving frequency band of 1650-2150 MHz.

In the above solution, the satellite ground station transceiver device further includes an antenna servo module, and the polarization motor of the antenna servo module drives the integrated radio frequency module to rotate together with the feed source, Aligned with polarization.

In addition, in order to achieve the above object, an embodiment of the present invention further provides a satellite communication system, including an indoor device and an outdoor device, where the outdoor device includes the satellite ground station transceiver device, and the indoor device includes a communication terminal and a satellite television receiving device. And the communication terminal is in communication with the satellite earth station transceiver; the satellite television receiving device is configured to receive a satellite television signal received by the satellite earth station transceiver.

In the above solution, the communication terminal includes a modulator, a demodulator, and a complex tap; the modulator is configured to modulate a signal transmitted from the terminal device to the satellite ground station transceiver; the demodulator is configured to Demodulating a signal transmitted from the satellite earth station transceiver to the terminal device; the complex tap includes a voice interface, a data and a LAN interface, and a video image interface, configured to transmit different types of terminal devices to receive or transmit signal.

In the above solution, the indoor device further includes an antenna servo control system configured to control the integrated module in the satellite ground station transceiver device and the feed source to rotate together to achieve polarization alignment.

The embodiment of the invention integrates a quadrature analog converter, a receiving and transmitting filter, a low noise amplifier, a power amplifier, a mixer and the like in a conventional satellite ground station transceiver device into an integrated radio frequency module; the integrated radio frequency module It is fixed with the feed of the antenna module and directly connected through the waveguide; the introduction of the combiner in the intermediate frequency single board saves the use of rotating joints and a large number of cables and waveguides. The embodiment of the invention improves the convenience of upgrading and maintaining the device, reduces the cost while integrating the device, improves the reliability and the scalability of the system, and only needs to be replaced when the satellite ground station upgrades the frequency band. The RF module and the feed source realize the platform of the system.

DRAWINGS

1 is an external view of an integrated radio frequency module in a first embodiment of a satellite earth station transceiver device according to the present invention;

2 is a schematic structural diagram of an integrated radio frequency module in a satellite ground station transceiver device according to an embodiment of the present invention;

3 is a schematic diagram of connection between a feed source and an integrated radio frequency module in a satellite ground station transceiver device according to an embodiment of the present invention;

4 is a schematic structural diagram of an intermediate frequency transceiver module in a satellite ground station transceiver device according to an embodiment of the present invention;

5 is a schematic diagram of functional modules of a satellite earth station transceiver device according to an embodiment of the present invention;

6 is a schematic structural diagram of a circuit of a first combiner or a second combiner in a satellite ground station transceiver device according to an embodiment of the present invention;

7 is a top plan view of a first combiner or a second combiner in a satellite ground station transceiver device according to an embodiment of the present invention;

8 is a side elevational view of a first combiner or a second combiner in a satellite ground station transceiver device according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a satellite communication system according to an embodiment of the present invention.

The implementation, functional features and advantages of the embodiments of the present invention will be further described with reference to the accompanying drawings.

detailed description

It is understood that the specific embodiments described herein are merely illustrative of the embodiments of the invention and are not intended to limit the invention.

The embodiment of the invention provides a satellite ground station transceiver device, which comprises an antenna module and an integrated radio frequency module, wherein the antenna module comprises an antenna and a feed. As shown in FIG. 1, an outline view of an integrated radio frequency module in a first embodiment of a satellite earth station transceiver apparatus according to the present invention is shown. The integrated radio frequency module includes a casing, and the casing is provided with a connecting portion 215 connected to the feed source, and the casing is further provided with an intermediate frequency receiving signal N head 213 and an intermediate frequency transmitting signal N head 214. , power supply N head 212.

As shown in FIG. 2, a schematic structural diagram of an integrated radio frequency module in a first embodiment of a satellite earth station transceiver apparatus according to the present invention is shown. An internal portion of the housing is integrated with the feed source 102 a quadrature analog converter 201, a receive filter 202 and a transmit filter 203 connected to the orthogonal mode converter 201, a low noise amplifier 204 connected to the receive filter 202, and a transmit filter 203 a power amplifier 205, a first mixer 206 connected to the low noise amplifier 204, a second mixer 208 connected to the power amplifier 205; the first mixer 206 and the intermediate frequency receiving signal The N head 213 is connected, and the second mixer 208 is connected to the intermediate frequency transmission signal N head 214.

The N head is the abbreviation of N series RF coaxial connector. The N series product is a threaded medium power connector with high reliability, strong vibration resistance, excellent mechanical and electrical performance, etc. RF coaxial cable is connected to radio equipment and instruments and ground transmitting systems in harsh vibration and environmental conditions. The IF receiving signal N header 213 is configured to transmit an intermediate frequency signal obtained after being transmitted from the satellite to the ground station, and is further configured to transmit a control signal; the intermediate frequency transmitting signal N header 214 is configured to transmit an intermediate frequency transmitting signal; The power supply N-head 212 supports a 24V power supply configured to provide power to the integrated radio frequency module.

The orthogonal mode converter 201 is coupled to the feed 102 via a waveguide and a polarization rotary joint configured to be driven by a polarization motor of the antenna servo module and to drive the feed 102 to rotate The waveguide includes a circular waveguide and a square waveguide, and the waveguide used in conjunction with the rotary joint is generally a square waveguide. The quadrature analog converter 201 is configured to separate the received signal and the transmitted signal from the signal received by the feed 102.

The transmit filter 203 and the receive filter 202 can filter the signal according to actual needs to obtain a signal of a desired frequency range. In this embodiment, the transmission signal processed by the transmission filter 203 has a frequency range of 14 GHz to 14.5 GHz, and the received signal processed by the reception filter 202 has a frequency range of 12.25 GHz to 12.75 GHz.

The intermediate frequency/control signal 210 includes both an intermediate frequency signal and a 22 KHz control signal. The 22 KHz control signal is configured to obtain the intermediate frequency received signal according to a reference frequency modulation of 10 MHz.

As can be seen from FIG. 2, in the downlink direction in which the satellite transmits the received signal to the antenna, after receiving the received signal, the antenna transmits the signal to the orthogonal mode converter 201 via the feed 102 of the antenna module. The mode converter 201 separates the received signal and obtains a signal in the receiving frequency range through the receiving filter 202. The signal is processed by the low noise amplifier 204 and input to the first mixer 206 together with the signal generated by the local oscillator. Obtaining an intermediate frequency signal, wherein the intermediate frequency signal is modulated by the first phase locked loop local oscillator 207 and a 22KHz control signal to obtain an output of the intermediate frequency receiving signal of the preset frequency band; and inputting the integrated antenna in the upward direction of the antenna transmitting signal to the satellite The intermediate frequency transmission signal of the radio frequency module is processed by the second mixer 208 and the second phase-locked loop local oscillator 209, and then subjected to power amplification and filter filtering to obtain a transmission signal in a transmission frequency range, and the transmission signal passes through The orthogonal mode converter 201 is then transmitted by the feed 102 to a satellite.

In the traditional satellite ground station transceiver device, the devices in the integrated RF module are distributed and not integrated, each requires a large number of cables or waveguide connections, complicated wiring, poor reliability, and extremely inconvenient for installation and maintenance. And there are certain security risks. In the satellite ground station transceiver device, the integrated radio frequency module according to the first embodiment of the present invention can not only realize the functions of the original related components, but also save a large number of cables and waveguides through integration, and reduce the device. The volume has achieved cost and space, and greatly improved the difficulty of construction, while improving the reliability of the equipment and the safety of construction.

In practical applications, when there is a problem with the satellite ground station transceiver, there are more cases where the components in the integrated RF module are faulty and need to be repaired or replaced. If the component fails and needs to be repaired or replaced, the current common practice is to transport the entire satellite ground station transceiver with component failure to the designated location for repair or replacement by a professional. This will not only take time and effort, but also increase the capital. If the satellite ground station transceiver device provided by the first embodiment of the present invention is used at this time, only the circuit board of the integrated radio frequency module is disassembled for maintenance, and then the circuit board can be directly replaced by air. Replace it at the fault site, or replace it directly with a field-replacement replacement board, which will save you time and effort, and The amount of funds invested.

Similarly, when upgrading the transceiving frequency bands supported by satellite terrestrial station transceivers (such as upgrading to Ku-band or Ka-band), the current practice is to replace the entire set of communication system equipment, which not only requires a lot of money, but also takes time and effort. The upgraded frequency band only needs to replace some components in the integrated radio frequency module and the feed 102. Therefore, the satellite ground station transceiver device provided by the second embodiment of the present invention only needs to replace the integration. The RF module and the feed 102, and the rotating joint connecting the integrated RF module and the feed 102 and the waveguide therein, not only save cost to maximize the protection of the customer's investment, but also greatly improve the modular design. The maintainability of the device, when the device has a problem, directly replace the failed module, making maintenance operations simple.

As shown in FIG. 3, a schematic diagram of a connection between a feed source 102 and an integrated radio frequency module 200 in a second embodiment of a satellite earth station transceiver device according to the present invention is shown. The integrated radio frequency module 200 is the integrated radio frequency module 200 as described in the first embodiment. In the second embodiment, the connecting portion 215 of the integrated radio frequency module 200 and the feed source 102 are fixedly connected by a waveguide. The waveguide is a waveguide in the feed 102, typically a circular waveguide. The integrated radio frequency module 200 and the feed source 102 fixed together can be detached or replaced as a whole from the satellite ground station transceiver device, thereby not only eliminating expensive polarized rotating joints and the like. The waveguide solves the problem that the waveguide is easily damaged and causes communication failure when the star rotates. When aligned with the satellite, the polarization motor of the antenna servo module drives the fixed integrated RF module 200 and the feed 102 together for polarization alignment, the rotation of which includes horizontal rotation and pitch rotation.

When the frequency band supported by the satellite ground station transceiver device is upgraded, the device provided by the second embodiment of the present invention can replace the integrated RF module 200 and the feed source 102, which saves time and labor, and saves the use. The cost of expensive polarized rotating joints also enables the platforming of satellite ground station transceivers.

Further, the present invention provides a third embodiment of a satellite earth station transceiver device, the implementation In an example, the satellite ground station transceiver device includes the integrated radio frequency module 200 as described in the first embodiment, and further includes an intermediate frequency transceiver module and a first combiner, wherein

One end of the first combiner is provided with a first interface, and the other end is provided with a second interface and a third interface, and the second interface is connected to the intermediate frequency receiving signal N head 213 of the integrated radio frequency module 200, and the third interface is The intermediate frequency transmitting signal N head 214 of the integrated radio frequency module 200 is connected;

As shown in FIG. 4, a schematic structural diagram of an intermediate frequency transceiver module in a third embodiment of a satellite earth station transceiver apparatus according to the present invention is shown. In the uplink direction in which the transmitting signal is transmitted to the satellite, the baseband IQ data is peak-shaved, and then the digital-to-analog converter 301 performs spectrum shifting, and the obtained digital intermediate frequency signal is converted into an analog intermediate frequency signal and then transmitted to the power through the transmitting RF link. The amplifier 305 amplifies, and then combines with the intermediate frequency control signal and the intermediate frequency power signal to form a signal through the second combiner 310, and outputs it; in the downstream direction of receiving the satellite transmission signal, the input from the second combiner 310 After the signal is separated by the multiplexer and received by the combiner, the signal is sequentially subjected to power amplification, analog down-conversion, and analog-to-digital conversion, and then digitally down-converted to obtain uplink baseband IQ data.

The intermediate frequency transceiver module 300 further includes a frequency tracking unit 308 configured to provide a fixed frequency of the local oscillator output; and a digital modulator connected to the digital to analog converter 301 and connected to the analog to digital converter 302 A digital demodulator configured to modulate or demodulate an input signal.

It is conceivable that there is a fourth embodiment, the satellite ground station transceiver device comprising the integrated RF module 200 and the feed 102 fixed together as described in the second embodiment, and the intermediate frequency transceiver module 300 and the connection station The integrated RF module 200 and the first combiner of the intermediate frequency transceiver module 300. Functional block diagram of the satellite ground station transceiver device in this embodiment As shown in FIG. 5, the antenna module 100, the integrated radio frequency module 200, the intermediate frequency transceiver module 300, the antenna servo module 400, and the first combiner 500 are included.

The IF transceiver module 300 of the third and fourth embodiments of the present invention adds a second combiner 310 to the existing IF board, and the second combiner 310 will be in the existing IF board. The intermediate frequency transmission signal line, the intermediate frequency receiving signal line, the intermediate frequency control signal line, and the intermediate frequency power signal line are combined into one signal line, and only one rotating joint is needed, which saves equipment compared with using multiple rotating joints in the existing intermediate frequency single board. The cost is simplified and the structure of the intermediate frequency transceiver module 300 is simplified. In addition, in terms of measurable, the IF transceiver board of the embodiment of the present invention can detect standing waves and power, report power alarms, and process alarms.

As shown in FIG. 6, a circuit configuration diagram of a first combiner 500 or a second combiner 310 in a third or fourth embodiment of a satellite earth station transceiver apparatus according to the present invention is shown. The first combiner 500 and the second combiner 310 respectively include a low frequency cavity filter 501, a high frequency cavity filter 503, two capacitors, and a capacitor 502 connected to the low frequency cavity filter. Between the input end and the output end of the 501, another capacitor 504 is connected between the input end and the output end of the high frequency cavity filter 503; the first combiner 500 and the second combiner The transmitting band of the device 310 is 950-1450 MHz, and the receiving frequency band is 1650-2150 MHz.

The first combiner 500 and the second combiner 310 combine the low frequency signal, the direct current power signal, and the control signal through the low frequency cavity filter 501 and the first capacitor 502 into one signal, and the high frequency signal and the direct current power signal are combined. The control signal is combined into a signal through the high frequency cavity filter 503 and the second capacitor 504, and then the combined two signals are combined into one signal; or

The input signal is separated into a signal output including a low frequency signal, a DC power signal, and a control signal through the low frequency cavity filter 501 and the first capacitor 502, and is separated by the high frequency cavity filter 503 and the second capacitor 504. A signal output including a high frequency signal, a DC power signal, and a control signal.

It should be noted that, in the third or fourth embodiment, the first combiner 500 and the second The circuit structure and shape of the combiner 310 are exactly the same. As shown in Fig. 7, a top plan view of the first combiner 500 or the second combiner 310 in the third or fourth embodiment is shown, and an external side view thereof is shown in Fig. 8.

In the third or fourth embodiment of the present invention, the transmitting frequency band is set to 950-1450 MHz, the receiving frequency band is set to 1650-2150 MHz, and the transmitting and receiving interval of 200 MHz reduces the design difficulty of the transceiver transceiver isolation degree, and can satisfy the isolation of the transmitting and receiving frequency. Degree requirements.

Further, the satellite earth station transceiver device in the second and fourth embodiments of the present invention further includes an antenna servo module 400, and the polarization motor of the antenna servo module 400 drives the integrated radio frequency module 200 and the feed source 102. Rotate together for polarization alignment.

Since the integrated radio frequency module 200 is fixed to the feed source 102 and directly connected through the waveguide of the feed source 102, when the antenna servo module 400 controls the feed source 102 to rotate the star, it is The polarized motor drives the integrated radio frequency module 200 and the feed 102 to rotate together to achieve an accurate star.

In the case where the integrated radio frequency module 200 and the feed source 102 are connected by a polarization rotating joint and a waveguide therein, the antenna servo module 400 of the satellite earth station transceiver device drives the pole by a polarized motor. The rotating joint is rotated to drive the feed 102 to rotate the star. By directly connecting the integrated radio frequency module 200 and the feed source 102, the cost of using the expensive polarized rotary joint is saved, and the widespread use of the satellite ground station transceiver device is promoted.

Correspondingly, an embodiment of the present invention further provides a satellite communication system, including an indoor device and an outdoor device. As shown in FIG. 9, a schematic structural diagram of a satellite communication system according to an embodiment of the present invention is shown. The outdoor device includes the above-mentioned satellite ground station transceiver device proposed by the embodiment of the present invention, the indoor device includes a communication terminal and a satellite television receiving device, and the communication terminal communicates with the satellite ground station transceiver device; The satellite television receiving device is configured to receive a satellite television signal received by the satellite earth station transceiver.

The communication terminal includes a modulator, a demodulator, and a complex tap; the modulator is configured to modulate a signal transmitted from the terminal device to the satellite earth station transceiver; the demodulator is configured to demodulate The satellite ground station transceiver device transmits a signal to the terminal device; the complex tap includes a voice interface, a data and a LAN interface, and a video image interface, and is configured to transmit signals received or transmitted by different types of terminal devices.

The indoor device further includes an antenna servo control system configured to control the integrated module in the satellite ground station transceiver device to rotate together with the feed source 102 to achieve polarization alignment.

In the case where the integrated radio frequency module 200 and the feed source 102 are connected by a polarization rotating joint and a waveguide therein, the antenna servo control system included in the indoor device is configured to control the connection in the satellite ground station transceiver device. The integrated radio frequency module 200 and the polarization rotating joint of the feed source 102 rotate to drive the feed source 102 to rotate the star.

In the satellite communication system of the embodiment of the present invention, the ground terminal device is connected to the complex resolver by using different communication interfaces, and then input to the integrated radio frequency module 200 through the modulator modulation signal, and finally passes through the feed 102. Transmitting a signal to the satellite; when transmitting the signal to the ground station, the antenna 101 of the satellite ground station transceiver receives the signal and transmits it to the feed 102, and then passes through the integrated RF module 200 for transmission to the satellite The demodulator demodulates the signal and finally communicates with the ground terminal device via different communication interfaces of the complex tap.

The satellite ground station transceiver device used in the satellite communication system provided by the embodiment of the invention realizes integration and platformization, which not only improves the convenience of system upgrade and maintenance, greatly reduces the cost, and also improves the reliability and the system. Scalability is conducive to promoting the wide application of satellite communication services.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Industrial applicability

The embodiment of the invention integrates a quadrature analog converter, a receiving and transmitting filter, a low noise amplifier, a power amplifier, a mixer and the like in a conventional satellite ground station transceiver device into an integrated radio frequency module; the integrated radio frequency module It is fixed with the feed of the antenna module and directly connected through the waveguide; the combiner is introduced into the intermediate frequency single board, which saves the use of rotating joints and a large number of cables and waveguides; thus, the convenience of upgrading and maintenance of the device is improved. When the device is integrated, the cost is reduced; the reliability and scalability of the system are improved, and when the satellite ground station upgrades the frequency band, only the integrated RF module and the feed need to be replaced, thereby realizing the platform of the system.

Claims

A satellite ground station transceiver device includes an antenna module, the antenna module includes an antenna and a feed, the satellite ground station transceiver device includes an integrated radio frequency module, and the integrated radio frequency module includes a casing, and the casing a connecting portion connected to the feed source is disposed on the casing, and the casing is further provided with an intermediate frequency receiving signal N head, an intermediate frequency transmitting signal N head, and a power source N head; and the casing is internally integrated with the feeding source a quadrature-mode converter, a receive filter and a transmit filter connected to the quadrature-mode converter, a low-noise amplifier connected to the receive filter, a power amplifier connected to the transmit filter, and a first mixer connected to the low noise amplifier, a second mixer connected to the power amplifier; the first mixer is connected to the N-frequency receiving signal N-head, and the second mixer The intermediate frequency transmission signal is connected to the N head.
The satellite earth station transceiver apparatus according to claim 1, wherein the connection portion of the integrated radio frequency module is fixedly coupled to the feed source via a waveguide.
The satellite earth station transceiver device according to claim 1 or 2, wherein the satellite earth station transceiver device further comprises an intermediate frequency transceiver module and a first combiner, wherein

The first combiner is provided with a first interface, the other end is provided with a second interface and a third interface, and the second interface is connected to the N-frequency receiving signal N of the integrated radio frequency module, and the third interface is The intermediate frequency transmitting signal of the integrated radio frequency module is connected to the N head;

The intermediate frequency transceiver module includes a second combiner, an intermediate frequency transmitting unit, and an intermediate frequency receiving unit, wherein the second combiner has a fourth interface at one end and a fifth interface and a sixth interface at the other end, the fourth The interface is connected to the first interface of the first combiner, the fifth interface is connected to the intermediate frequency transmitting unit, and the sixth interface is connected to the intermediate frequency receiving unit.
The satellite earth station transceiver apparatus according to claim 3, wherein said first combiner and said second combiner respectively comprise a low frequency cavity filter, a high frequency cavity filter, and two capacitors And a capacitor is connected between the input end and the output end of the low frequency cavity filter, and another capacitor is connected between the input end and the output end of the high frequency cavity filter.
The satellite earth station transceiver apparatus according to claim 4, wherein the first combiner and the second combiner have a transmission frequency band of 950-1450 MHz and a reception frequency band of 1650-2150 MHz.
A satellite earth station transceiver apparatus according to claim 2, wherein said satellite earth station transceiver further comprises an antenna servo module, said polarization motor of said antenna servo module driving said integrated radio frequency module together with said feed source Rotate for polarization alignment.
A satellite communication system comprising an indoor device and an outdoor device, the outdoor device comprising the satellite earth station transceiver device according to any one of claims 1-6, the indoor device comprising a communication terminal, a satellite television receiving device, The communication terminal communicates with the satellite earth station transceiver; the satellite television receiving device is configured to receive a satellite television signal received by the satellite earth station transceiver.
A satellite communication system according to claim 7, wherein said communication terminal comprises a modulator, a demodulator, a complex tap; said modulator being configured to modulate incoming from said terminal device to said satellite earth station transceiver a signal; the demodulator configured to demodulate a signal transmitted from the satellite earth station transceiver to the terminal device; the complex tap includes a voice interface, a data and LAN interface, a video image interface, configured to transmit Signals received or transmitted by different types of terminal devices.
The satellite communication system of claim 7 wherein said indoor device further comprises an antenna servo control system configured to control the integrated module in the satellite earth station transceiver to rotate with the feed to achieve polarization alignment.