用于家庭VHF-FM接收的自适应天线系统  

Adaptive antenna systems for domestic VHF--FM reception

作　　者：沙济彰[1] 

机构地区：[1]西安电子科技大学电子工程系

出　　处：《西安电子科技大学学报》1990年第4期101-107,共7页Journal of Xidian University

摘　　要：本文讨论了VHF-FM接收中的衰落现象,叙述了在一典型房间里对来自无线电台的场强进行的测量。然后提出了可与家庭无线电接收机联用、以改善VHF-FM接收质量的三种自适应天线系统。所阐述的方案是:监测选择系统、同相等增益合并器及混合式二元加权合并器。此外,还叙述了监测选择系统的设计、实现,并讨论了该系统的实验结果。The fading in VHF--FM reception is discussed and the measurcment of the field strength in a typical room from radio stations is described. Three types of adaptive antenna systems are presented for improving VHF--FM reception with a domestic radio receiver. The schemes described arc the monitored selection system, the cophasal equal--gain com- biner, and the mixed binary weighted combiner. In addition, the design and implementation of a monitored selection system is described and experimental results for this system are discussed.

关 键 词：VHF-FM 自适应 天线系统 接收天线 

分 类 号：TN827.2[电子电信—信息与通信工程]