Abstract
A recently developed compact planar Quasi-Landstorfer antenna is presented here. For this design, the reflector element was removed from the original Landstorfer antenna and the ground plane was modified to have the same behavior as the removed reflector element. By using the ground plane as a reflector, the overall size of the planar Landstorfer antenna was reduced by 44%. The smaller prototype Quasi-Landstorfer antenna presented here had a measured return loss of -42.7 dBi and measured gain of 6.6 dBi at the resonant frequency of 2.44 GHz. Furthermore, a Quasi-Landstorfer antenna design with an extended ground plane was also investigated and is presented. Simulations and measurements of a prototype antenna have shown that by adding conducting strips to the end of the ground plane, approximately 1 dBi of gain could be added without changing the overall dimensions. Throughout this work, it is shown that the measured values agree well with simulations.
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