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A compact broadband circularly polarized slot antenna with two linked rectangular slots and an inverted-F feed line

Release time:2019-08-08

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Affiliation of Author(s):UESTC

Teaching and Research Group:CRFICS

Journal:IEEE Transactions on Antennas and Propagation

Key Words:Bandwidth , Broadband antennas , Slot antennas , Antenna feeds , Microstrip antennas

Indexed by:Applied Research

Document Code:10.1109/TAP.2018.2867020

Volume:66

Issue:12

Page Number:7374-7377

Translation or Not:no

Date of Publication:2018-11-05

In this communication, a broadband circularly polarized slot antenna with an inverted-F-shaped microstrip feed line and two linked rectangular slots in the ground plane is proposed. This antenna offers a wide 3 dB axial ratio (AR) bandwidth in a compact size (previously proposed slot antennas with a similar AR bandwidth are almost double in size) without employing vias or other passive components. Measured AR bandwidth is 83.5% (4.3 and 3-7.3 GHz) which is completely overlapped by the measured S 11 bandwidth of 92.6% (5 and 2.9-7.9 GHz).

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