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A Compact Broadband Cross-Shaped Circularly Polarized Planar Monopole Antenna with a Ground Plane Extension

Release time:2019-08-05

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Affiliation of Author(s):UESTC

Teaching and Research Group:CRFICS

Journal:IEEE Antennas and Wireless Propagation Letters

Key Words:Bandwidth , Broadband antennas , Antenna measurements , Impedance , Broadband communication , Antenn

Indexed by:Applied Research

Volume:17

Issue:2

Page Number:335-338

Translation or Not:no

Date of Publication:2018-01-04

This letter presents a new broadband circularly polarized (CP) planar monopole antenna with a simple structure and compact size. Broadband CP operation is achieved by vertically extending one side of the ground plane, while a cross-shaped monopole structure and the presence of a slot in the ground plane assure a broad impedance bandwidth. The antenna is successfully simulated, and a prototype is fabricated. Measurement results indicate that the 3 dB axial-ratio bandwidth is about 42.6% (2.6 GHz, 4.8-7.4 GHz), fully covered by a -10 dB impedance bandwidth of 55.5% (3.35 GHz, 4.36-7.71 GHz). Fur

annex:

9-2018.pdf

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