论文信息 - Design of patch antenna with switchable circular polarization using a branched feed circuit

Design of patch antenna with switchable circular polarization using a branched feed circuit

A reconfigurable circularly polarized antenna is presented. The proposed antenna consists of a microstrip feed line, a ground plane with two slots, and a radiation patch. Bifurcating the microstrip feed line into two branches allows the polarization to be switched by opening and shorting the termination of the line using an anti-parallel diode pair. The design of the proposed feed structure for polarization-diversity operation is discussed, and switching between right- and left-handed circular polarization (CP) is demonstrated with cross-polarization discrimination of greater than 30 dB. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 1–4, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21246

Nagahisa Mita | Takeshi Fukusako | Naoki Kitamura

[1] D. Schaubert,et al. Analysis of an aperture coupled microstrip antenna , 1986 .

[2] Y. Rahmat-Samii,et al. A reconfigurable patch antenna using switchable slots for circular polarization diversity , 2002, IEEE Microwave and Wireless Components Letters.

[3] Huey-Ru Chuang,et al. 3-D FDTD design analysis of a 2.4-GHz polarization-diversity printed dipole antenna with integrated balun and polarization-switching circuit for WLAN and wireless communication applications , 2003 .

[4] R Matick,et al. Transmission Lines for Digital and Communication Networks , 1969 .

[5] N. Mita,et al. Polarization characteristics of patch antenna using in-plane and weakly biased ferrite substrate , 2004, IEEE Transactions on Antennas and Propagation.