An Interpretative Study on Circularly Polarized Patch Antenna Using Artificial Ground Structure

作者：Maruyama Sotaro^*; Fukusako Takeshi

来源：IEEE Transactions on Antennas and Propagation, 2014, 62(11): 5919-5924.

DOI：10.1109/TAP.2014.2357431

• Artificial ground structure (AGS)
• artificial magnetic conductor (AMC)
• axial ratio
• broadband antenna
• circular polarization
• matching
• microstrip patch antenna
• polarizer

This communication presents some interpretative studies on a circularly polarized broadband patch antenna using an artificial ground structure (AGS). This patch antenna has a broadband characteristics in both impedance and axial ratio, which are more than 20% and 40%, respectively. The principle to expand the 3-dB axial ratio characteristics is discussed using a combination of circularly polarized patch antenna and an AGS polarizer. Furthermore, a broadband matching method using an extended outer conductor of coaxial cable is discussed. The mechanism of the matching structure is also discussed.

• 出版日期2014-11