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A Quasi Yagi Antenna Backed by a Metal Reflector

Author:
Melais, Sergio E.   Weller, Thomas M.  


Journal:
IEEE Transactions on Antennas and Propagation


Issue Date:
2008


Abstract(summary):

A Quasi Yagi antenna is presented that provides off-axis radiation when backed by a metal reflector. The off-axis radiation pattern is achieved by an increase in the substrate thickness beneath the antenna elements. At 2.4 GHz the antenna demonstrated a bandwidth of 190 MHz, beam tilt towards the end fire direction (theta = 42 degrees), maximum gain of 4.5 dB, and a radiation efficiency of 87%. The results of a study on bandwidth, gain and radiation pattern versus substrate thickness are presented herein. To the best of the authors' knowledge previous realization of this antenna over a ground plane has not been investigated.


Page:
3868-3872


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