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Design of circularly polarized stacked microstrip antennas

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4 Author(s)
Xin Zhang ; Nat. Lab. of Antennas & Microwave Technol., Xidian Univ., Xi''an ; Ze-Hong Yan ; Jun-Bo Jiang ; Yue Song

A simple technique is developed to improve the axial ratio (AR) bandwidth and quality of circularly polarized stacked microstrip antennas (CPSMAs) using a new C-type single feed. The proposed antenna has been optimized and fabricated, and the computed results agree very well with measurements. The antenna has a 3 dB AR bandwidth of 11.6%, gain is more than 8.2 dBi and the impedance bandwidth for VSWR less than 2 is 29%. The proposed feed optimization technique is useful for rapid design of circular polarized stacked microstrip antennas.

Published in:

Antennas, Propagation and EM Theory, 2008. ISAPE 2008. 8th International Symposium on

Date of Conference:

2-5 Nov. 2008