Wideband microstrip leaky-wave antenna and its feeding system

摘要

A wideband microstrip leaky-wave antenna, comprising a plurality of sections of antenna. Each section of antenna includes a major part of microstrip antenna, each of which has different and continuous width parameters and is connected serially by the way in which the width parameters of major part of microstrip are decreasing. Each band of each antenna's section constructs a continuous antenna's band. In addition, To prevent characteristic of bandwidth from limiting, the antenna can include a wideband feeding system. The wideband feeding system comprises at least one conductor-backed coplaner strips connected to major part of wideband antenna, a balun connected to the conductor-backed coplaner strip, and an input microstrip connected to the balun. The input microstrip is utilized for energy input, then transmitting energy to the end of the section antenna through the conductor-backed coplaner strip and the balun.