A size-reduced, broadband, bidirectional, circularly polarized antenna for potential application in WLAN, WiMAX, 4G, and 5G frequency bands

Mason Moore, Zabed Iqbal, Sungkyun Lim

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

A bidirectional, circularly polarized antenna with a miniaturized design and broadband capabilities is proposed for consideration in WLAN 2.4/3.65-GHz, WiMAX 2.3/2.5-GHz, 4G, and 5G frequency bands. The front side of the antenna consists of a hexagonal slot, a hexagonal patch, ten meander tips, and rectangular corner notches to achieve broad impedance and axial ratio bandwidth. The feedline on the backside of the antenna with accompanying shorting pin is offset to further increase the common bandwidth. Also, the four corners of the antenna substrate are removed to decrease the electrical size. The designed antenna is fabricated and measured to validate simulation results. From measured results the antenna has a −10-dB impedance bandwidth of 89.7% (1.60–4.20 GHz) and a 3-dB axial ratio bandwidth of 70.5% (1.80–3.76 GHz). The peak realized gain in the boresight direction is 3.65 dBi, which occurs at 1.88 GHz.

Original languageEnglish
Pages (from-to)1-11
Number of pages11
JournalProgress In Electromagnetics Research C
Volume114
DOIs
StatePublished - 2021

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