摘要
近十几年来,日本、欧洲和美洲等一些国家和地区相继发射了广播卫星,并开展了一系列Ku波段(12GHz)卫星直播(DBS)业务,促进了卫星电视接收技术的飞快发展,尤其是DBS平面天线的发展。本文介绍了DBS平面天线的基本原理、结构和特点。综述了DBS平面天线的技术现状和发展趋势,探讨了我国发展DBS平面天线的必要性和紧迫性。
Over past ten years, the Ku-band broadcasting satellites had been sent into orbit by some countries and regions such as Japan, Western Europe and Northern America, etc. Also, a series of business for Direct Broadcasting Satellite (DBS) had been carried out. Those situations have accelerated the development of the receiving techniques for television broadcast by satellites, especially, the development of the small-size planar antennas. This paper discusses the basic principle, construction and features of small-size planar antennas. This paper also gives some technical parameters of the small-size planar antenna developed both at home and abroad. On the basis of the microstrip antenna, this paper summarizes all sorts of small-size planar antennas presented at several countries. At last, this paper explores the necessity to develop small-size planar antenna in our country and proposed the current urgent task for us to do.
