2002 · 33 citations · 0 references
EngineeringElectrical EngineeringAntennasMicrowave EngineeringWireless CommunicationsAntenna DesignAntenna SimulationBroadband AntennasMicrostrip AntennasMicrowave AntennasPlanar AntennasAntenna Size Reduction TechniquesBandwidthEnsemble SimulationMicrostrip Patch AntennasMicrowave SubstratesMiniaturized AntennasPatch AntennasWideband Microstrip Antennas
In many applications in wireless communications, it is desirable to use microstrip patch antennas which are small in size but have bandwidths in excess of 10%. There are three common methods of reducing the patch size: (1) the use of microwave substrates with large permittivities; (2) the use of shorting walls; and (3) the use of shorting pins. When applied to the regular patch, the resulting small-size antenna usually has only a few percent bandwidth, not enough to meet the requirement of many applications. In this paper, we apply the three size reduction techniques to two wideband patch antennas - the U-slot patch and the L-probe patch. Simulation results using ENSEMBLE 6.0 are presented first, followed by some measured results.