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1.引言宽带卫星通讯系统要用高增益低噪声天线,因此电星系统选择了喇叭反射器天线。这种天线波束很窄,指向必须很精确。在4千兆赫时,指向偏离中心0.11°,接收讯号
1. Introduction Broadband satellite communication systems use high-gain, low-noise antennas, so electrical star systems have chosen the horn reflector antenna. This antenna beam is very narrow, pointing must be very accurate. At 4 GHz, point off 0.11 ° from the center and receive the signal