科研之友
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摘要
In this article, a broadband unidirectional printed antenna with quad-folded dipoles for circularly polarized radiation is proposed. The antenna consists of a trapezoidal feed structure, an annular transmission line and quad-folded dipoles. An 80 x 80 mm(2) reflector is used to achieve unidirectional radiation. Measured results indicate that the proposed design achieves an impedance bandwidth of 37.1% (1.82-2.65 GHz) for the voltage standing wave ratio <2.0 and a 3 dB axial ratio bandwidth of 35% (1.84-2.62 GHz), covering the third-generation (3G, 1880-2125 MHz)/long-term evaluation (1880-2400 MHz)/wireless local area network (2400-2480 MHz) bands. An average gain of 6.3 dBic is obtained in the operating band.
- 出版日期2015-12
- 单位电子科技大学
