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Progress In Electromagnetics Research
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HIGH GAIN RECTANGULAR BROAD BAND MICROSTRIP ANTENNA WITH EMBEDDED NEGATIVE CAPACITOR AND CHIP RESISTOR

By A. Kaya

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Abstract:
Various communication systems require single radiating element operating in wide band. In this paper, a novel active integrated single microstrip antenna is proposed and its radiation pattern and gain performance is optimized with analysis. The reactive loading is provided by a negative capacitor section embedded within the patch. The active negative capacitor is made of a field-effect transistor that exhibits negative resistance as well as capacitance. It can, therefore, compensate the loss of an inductor. A microstrip patch operating at 10.5 GHz having 12.2% bandwidth has been utilized as a reference antenna. With the proposed antenna design, the antenna radiation pattern can be as large as about 1.5 times that of an antenna without reactive loading. In addition, it has been shown that active compensation significantly improves the matching level.

Citation:
A. Kaya, " high gain rectangular broad band microstrip antenna with embedded negative capacitor and chip resistor ," Progress In Electromagnetics Research, Vol. 78, 421-436, 2008.
doi:10.2528/PIER07100202
http://www.jpier.org/PIER/pier.php?paper=07100202

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