A Low Profile Circularly Polarized Antenna based on Stepped Open-ended Slot Radiator

Authors

  • Ping Wang School of Communications and Information Engineering Chongqing University Posts and Telecommunications, Chongqing, 400065, China
  • Qi Wu School of Communications and Information Engineering Chongqing University Posts and Telecommunications, Chongqing, 400065, China
  • Yu Shao School of Communications and Information Engineering Chongqing University Posts and Telecommunications, Chongqing, 400065, China
  • Dong Huang Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences, 400714, China

Keywords:

Circularly polarized (CP) antenna, low profile, open-ended slotline, stepped slotline, feed network, wide band

Abstract

A compact wide band and low profile circularly polarized antenna is presented based on stepped open-ended slotline in this paper. The antenna is composed of four open-end-slotted patchs and a feed network. Four open-end-slotted patchs are sequentially rotated and vertically soldered on the ground plane of the feed network, and are excited by a wide band transition from strip-line to slot-line with short pin in antenna element. The CP radiation of the proposed antenna is realized by four output ports of the feed network which transmit four signals that have equal amplitude with quadrature phase difference (00, 900, 1800, and 2700). Simulation results are compared with the measurements, and a good agreement is obtained. The measured results show that the proposed antenna can provide broad impedance bandwidth of 73.4% (3.5 GHz–7.56 GHz) (reflection coefficient less than -10 dB), a maximum gain of 4.74 dBi, and a 3-dB axial ratio (AR) bandwidth of about 35.1% (3.65 GHz–5.2 GHz).

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Published

2019-08-01

How to Cite

Ping Wang, Qi Wu, Yu Shao, & Dong Huang. (2019). A Low Profile Circularly Polarized Antenna based on Stepped Open-ended Slot Radiator. The Applied Computational Electromagnetics Society Journal (ACES), 34(08), 1165–1171. Retrieved from https://journals.riverpublishers.com/index.php/ACES/article/view/8283

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