[天线]Microstrip-line-fed Compact Microstrip Antenna with

In order to meet the requirement for mobile or personal communication YHI@Cj  
systems, microstrip antennas with reduced size and broadband operation are TbR!u:J  
of particular interest. Among various feeding mechanisms, the compact (
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broadband microstrip antennas directly matched to a 50Q microstrip line is v9l|MI15V  
also of importance, for its usefulness in integration with microwave ZvkBF9d  
integrated circuits. For this purpose, we present in this article several d1n*wVl  
related designs of microstrip antennas to broaden the operating bandwidth laGIu0s{  
and reduce the overall size of the antenna. These compact broadband |v= */
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designs are achieved using a chip-resistor loading [ 1-31, which effectively R;F z"
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lowers the resonant frequency of the microstrip antenna, improves the _rfGn,@BH  
antenna bandwidth. and eases the stringent tolerance of the impedance
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matching problem. In this study, details of the antenna designs using the H(ds  
chip-resistor loading are described. Experimental results of .. I2*\J)|f  
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