卫星广播如今已变为广播通信中主要的方法之一.世界各国都在努力为用户研制生产价格低廉的接收机和天线.其中,由集成电路构成的集成天线接收系统,省去了天线和接收机之间的许多连接法兰和传输线,具有很大的吸引力.地面接收系统性能的优劣是用接收天线的增益(G)和接收系统的等效噪声温度(T)的比值(’/全)来表征的。G/望称为地面站接收性奋能指数或品质因数。卫星地面站的口/少值可由分别六洲定的夭线增益 Nowadays, satellite broadcasting has become one of the main methods in broadcast communication.Every country in the world strives to develop low-cost receivers and antennas for users, among them, the integrated antenna receiving system composed of integrated circuits eliminates the need for antennas and reception The attractiveness of many connecting flanges and transmission lines between machines is demonstrated by the ratio of the gain of the receiving antenna (G) to the equivalent system noise temperature (T) of the receiving system (’/’ Full) to characterize. G / Hopefully referred to as Ground Station Receptive Activity Index or Quality Factor. The satellite ground station’s mouth / less value can be determined by the six Liuzhou antenna gain