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  • 李几超.某Ku频段卫星通信系统的设计[J].电讯技术,2012,52(5): - .    [点击复制]
  • LI Ji-chao.Design of a Ku band satellite communications system[J].,2012,52(5): - .   [点击复制]
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某Ku频段卫星通信系统的设计
李几超
0
(中国西南电子技术研究所,成都 610036)
摘要:
为了让两个地面站通过卫星链路进行无线通信,设计了一个Ku频段卫星通信系统 ,数据速率是512 kbit/s~4.096 Mbit/s,速率可调步进1 bit/s。选取了一 种较简洁的Ku频段地面 站设计方案,信道的本振为固定点频,调制解调器的中频范围是950~1 450 MHz。对卫 星通信 链 路功率进行了预算。地面站的组成设备,如调制解调器、低噪声放大器、上变频单元、下变 频单元等均选用成熟的商用货架产品,降低了设计风险和成本。本系统研制周期短,通信稳 定可靠,得到了用户的认可。
关键词:  卫星通信  链路功率预算  低噪声放大器  上变频单元  下变频 单元
DOI:
基金项目:
Design of a Ku band satellite communications system
LI Ji-chao
()
Abstract:
To realize communication between two ground stations via satellite wireless link,a Ku band satellite communications sys tem is designed.The data rate range is 512 kbit/s ~4.096 Mbit/s in 1 bit/s step. A relatively simple design is selected for the ground station. The local oscilla tor(LO) of channel has a fixed frequen cy synthesizer.The intermediate frequency(IF) range of modem is 950 ~1 450 MHz. Satellite link power is budgeted. The ground station is composed of modem,low noise amplifier(LNA),block up conv erter s(BUCs),block down converters(BDCs),which are off-the-shelf products so that th e design ris k and cost is reduced.The communica tion system is featured by short development cycle,sta ble and reliable communication.It has been authorized by users.
Key words:  satellite communications  link power budget  low noise amplifier(LNA)  block u p converters(BUC)  block down converters(BDC)
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