volume | PIER Journals

Abstract

A novel CPW-fed circular polarized slot printed monopole antenna for 5G application is presented. The proposed slot monopole antenna occupies a small area of 0.23λ_o x 0.35λ_o x 0.019λ_o, and the wavelength has been obtained for the center frequency of 3.4 GHz to 3.8 GHz range. First, two square slots are inserted on either side of the feed line and to provide two orthogonal electric fields, a spiral stub is embedded in one of the slots. In order to improve the axial ratio bandwidth of the proposed antenna, it is possible to etch another spiral stub on the other side of the feed line. The proposed antenna provides circular polarized radiation such that the reflection coefficient bandwidth (below -10 dB) is about 1.4 GHz (from 2.9 GHz to 4.3 GHz) or 38.89%, and the axial ratio bandwidth below 3 dB is about 400 MHz, from 3.4 GHz to 3.8 GHz. This is 11.1% at center frequency of 3.6 GHz. This antenna covers the useful frequency bandwidth for 5G application. Simulation and measurement results are presented.

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Dr. Seyyedeh Faezeh Seyyedrezaei

Dr. Hamid Reza Hassani

Dr. Maryam Farahani

Dr. Sajad Mohammad-Ali-Nezhad