Design and characteristics of a sector/cosec/sup 2/ shaped beam microstrip antenna

Sector/cosec/sup 2/ shaped beam antennas are very common elements in radio relay links. Reflector antennas, with suitable feeds and shapes of the reflectors, are frequently used for that kind of applications. However, in order to take advantage of the characteristics of microstrip antennas such as low profile, reduced physical dimensions and low cost, it has been decided to design a microstrip antenna for the very same application. This paper describes the procedure that has been adopted in order to design this antenna. The effects of the mutual coupling in the feeding network of the antenna are pointed out.<
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