Journal of the Korean Institute of Telematics and Electronics D (전자공학회논문지D)
- Volume 34D Issue 1
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- Pages.1-7
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- 1997
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- 1226-5845(pISSN)
A circular microstrip antenna with a parasitic element
비여진 소자를 추가한 원형 마이크로스트립 안테나
Abstract
In this paper, several parasitic elements are added to the circular microstrip antenna in order to increase its bandwidth. Three kinds of parasitic elements such as cone, circular plate, and ring types are applied and input VSWRs, radiation patterns, and input impedances are measured. The optimal sizes of each parasitic element are obtianed and the variations of the bandwidth according to the height from the patch are also measured. In thid case of the ring type, the optimum bandwidth is obtained at the height of 10mm from the patch to the parasitic element. In the cases of conical and circular plate types, the maximum bandwidth is obtained at the hight of 45mm form the patch to the parasitic elements.
Keywords