摘要
系统的接受天线主要包括:半波振子(偶极子)天线、八木天线、双环天线、菱形天线、X形天线、组合天线、天线阵等。在大系统中,各干线要经过长距离的电缆传输再进行分配,信号有较大的衰减,为确保用户仍有足够的电平,则要串入多个线路放大器。
The system＇s receiving antennas mainly include： half wave oscillator（ dipole） antenna,Yagi antenna,double loop antenna,diamond antenna,X antenna,combined antenna and antenna array. In large systems,trunks are distributed over long distances of cable transmission,and the signal is greatly attenuated. To ensure that the user still has sufficient levels,multiple trunk amplifiers must be connected in series.
作者
车凤玲
beEg-ling(Boli Broadcasting and Television Bureau,Boli 154500, China)
出处
《黑龙江科学》
2018年第9期130-131,共2页
Heilongjiang Science
关键词
无线电视系统
接受天线
信号传输
分配系统
Wireless television system
Receiving antenna
Signal transmission
Distribution system
