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A high-throughput communication satellite transponder and gateway station for distributed gateway stations

A technology of communication satellites and transponders, applied in electrical components, radio transmission systems, transmission systems, etc., can solve problems such as large protection bandwidth, cumbersome construction procedures, and waste of spectrum, and achieve increased total resources, reduced layout difficulty, and land use costs and infrastructure cost reduction effect

Active Publication Date: 2021-10-01
XIAN INSTITUE OF SPACE RADIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the physical bandwidth of the gateway station needs to be allocated to the user link and the feeder link separately, the protection bandwidth between the two links is relatively large, resulting in waste of spectrum
The number of gateway stations to be constructed mainly depends on the operator’s comprehensive consideration of economic costs and approval procedures. At present, the construction cost of a gateway station is about 100 million yuan and the construction procedures are cumbersome

Method used

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  • A high-throughput communication satellite transponder and gateway station for distributed gateway stations
  • A high-throughput communication satellite transponder and gateway station for distributed gateway stations
  • A high-throughput communication satellite transponder and gateway station for distributed gateway stations

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Effect test

Embodiment 1

[0039] A high-throughput communication satellite transponder for distributed gateway stations, the principle of which is: the transponder subsystem is composed of feeder link transponders, user link transponders and distributed gateway station transponders, wherein:

[0040] 1) User link transponder design: the uplink signal of the feeding beam passes through the preselector, low-noise amplification, and frequency converter to form a user beam signal, and then amplifies the power through the power amplifier, and sends the amplified signal to the designated user The transmit port of the beam antenna.

[0041] 2) Feed link transponder design: user beam uplink signal is sent to power amplifier for high power amplification after preselector, low noise amplification and frequency converter, and finally sent to feed antenna launch port after output filtering.

[0042] 3) Distributed gateway station transponder design: user beam uplink signal and distributed gateway station signal pa...

Embodiment 2

[0050] A high-throughput communication satellite transponder of a distributed gateway station, including a feeder link transponder, a user link transponder, a synthesizer B, a frequency converter C, and a duplexer A; as figure 2 shown.

[0051] The preselector A, low noise amplifier A, power divider A, combiner A, frequency converter A, filter A, power amplifier A, output filter A connected in sequence to the feeder link transponder;

[0052] The user link transponder includes a preselector B, a low noise amplifier B, a power splitter B, a frequency converter B, a duplexer B, a synthesizer D, a power amplifier B, and an output filter B connected in sequence;

[0053] One end of the output of the power divider A is connected to the frequency converter A, and the other end is connected to the synthesizer B, the frequency converter C, and the duplexer A in sequence, and then output to the synthesizer D.

[0054] The working bandwidth of the feeder link repeater is equal to the ...

Embodiment 3

[0056] like image 3 In the high-throughput satellite coverage area design, there are 24 user beams and 3 centralized gateway beams. Due to the limitation of the number of gateway stations and the physical bandwidth of gateway stations, the maximum uplink frequency resource of a centralized gateway station is 27.5-30GHz, and the downlink frequency resource is 17.7-20.2GHz. The frequency plan is as follows Figure 4 . The uplink frequency of the feed link is 27.5-29.5GHz, the downlink frequency is 19.2-20.2GHz, and the bandwidth of each beam is 500MHz; the uplink frequency of the user beam is 29.5-30GHz, the downlink frequency is 17.7-18.7GHz, and the bandwidth of each beam is 250MHz. To ensure that each user beam has sufficient downlink frequency resources, a gateway station manages up to 8 user beams.

[0057] At the same time, 24 user beams are designed to be managed by distributed gateway stations. The uplink frequency bandwidth of each beam is 500MHz, and the downlink f...

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Abstract

A high-throughput communication satellite transponder of a distributed gateway station and a gateway station belong to the technical field of communication satellite payloads. A channel preselector is designed at the receiving end of the distributed gateway station transponder, and the bandwidth covers the uplink frequency of the beam feeder link; a broadband low-noise amplifier is designed, and the performance is consistent with that of the centralized gateway station transponder; Hybrid bridge, the number of input ports of the hybrid bridge is consistent with the number of user beams of the distributed gateway station; a new local oscillator frequency converter is added to synthesize the uplink frequency of the feeder link into a broadband signal through the hybrid bridge; The converter splits the different user beam signals after the frequency converter, and adds a power amplifier with the same working bandwidth as the feeder link of the centralized gateway station transponder; adds an output filter after the power amplifier, and the bandwidth is the downlink frequency of the feeder link. The transponder and the gateway station of the present invention utilize space frequency resources to the greatest extent and improve the multiplexing efficiency of the feeder link.

Description

technical field [0001] The invention relates to a high-throughput communication satellite transponder of a distributed gateway station and the gateway station, belonging to the technical field of communication satellite payloads. Background technique [0002] Traditional high-throughput satellite systems are mainly composed of gateway stations, user terminals, satellites, and network control centers. The payload on the star is generally transparently forwarded by the centralized gateway station. Centralized transparent forwarding consists of two types of transponders: user link transponders and feeder link transponders. In essence, the user link is to reuse the frequency of user beams, and the feeder link is to reuse the frequency of gateway station beams. [0003] Under the condition of a certain satellite capability, the main contradictions that limit the increase of the capacity of centralized gateway stations for high-throughput satellites are concentrated in two point...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185
CPCH04B7/18517
Inventor 戚楠高鹏张睿奇郭红英周颖马海红谢阳李杰
Owner XIAN INSTITUE OF SPACE RADIO TECH
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