한국전자파학회:학술대회논문집 (Proceedings of the Korea Electromagnetic Engineering Society Conference)
- 한국전자파학회 2003년도 종합학술발표회 논문집 Vol.13 No.1
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- Pages.459-463
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- 2003
On the Necessity of Cavity-type Coupling Mechanism for obtaining Circular Polarization with Microstrip Patch Antenna
- Abegaonkar, Mahesh P. (Microwave and Antenna Laboratory (MAL) School of Electrical Engineering and Computer Science, Kyungpook National University) ;
- Cho, Young-Ki (Microwave and Antenna Laboratory (MAL) School of Electrical Engineering and Computer Science, Kyungpook National University)
- 발행 : 2003.11.15
초록
A circularly polarized microstrip patch antenna (MPA) using electromagnetic (EM) coupled fed method is analyzed in view of the two types of coupling mechanisms viz. cavity and parasitic type, proposed earlier. The patch-ground plane distance is varied in order to achieve the fore-mentioned types of couplings. For each case of patch-ground plane distance, the offset position of feedline is optimized for perfect matching and the boresight axial ratio (AR) is observed. It is seen that CP operation is possible only for cavity-type coupling (smaller patch-ground plane distances). The simulated results for the boresight AR for the two types of coupling mechanisms are presented.
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