摘要
卫星通信中使用的上变频器是卫星地面站的重要设备之一,其作用是完成从中频信号到射频信号的转换。这一功能看似简单,但卫星通信中使用的上变频器的结构模式及其本振频率的选择都是十分讲究的,这也决定了这类上变频器有其独特之处。简要介绍了上变频器的结构模式,着重介绍了二次变频模式,讨论了采用二次变频模式的原因和本振频率的选择以及上变频器的通用性等问题。
The up-converter used on satellite communication is one of the most significant devices on satellite earth station. It is applied in the conversion from intermediate frequency signal to radio frequency signal. Such function seems simple. However, selections of both structural pattern and local frequency of the up-converter are extremely deliberate and sophisticated, and thereby they determine the uniqueness of this type of up-con- verter. This article concisely introduces the structure of the conversion. Moreover, it discusses the reason of application cy and the universality of the up-converter. up-converter, and emphasizes the pattern of dual of dual conversion, the selection of local frequen-
作者
高彤鼎
虢亦农
GAO Tongding GUO Yinong(Shandong Broadcast and TV Station, Ji＇nan 250014, China Shandong Electronic Information Products Inspection Institute, Ji＇nan 250014, China)
出处
《中国有线电视》
2017年第1期48-50,共3页
China Digital Cable TV
关键词
上变频器
结构
本振频率
up-converter
structure
local frequency
