Small Antenna with Stable Impedance and Circular Polarization

Soheyl Soodmand*, Mark A Beach, Kevin A Morris

*Corresponding author for this work

Research output: Contribution to conferenceConference Paperpeer-review

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Variations in antenna impedance with respect to frequency significantly reduces the isolation bandwidth in some modern 5G communication systems like In-Band Full Duplex (IBFD) transceivers. A frequency independent antenna with a core structure of equiangular Archimedean spiral is designed to achieve impedance stability in frequency domain. The antenna impedance at an ultra-wideband (UWB) frequency range of 1.5GHz to 4GHz is more smoothened in some design steps to achieve an stable impedance using electromagnetic absorbers, capacitive impedance tuning and modification techniques whilst this small antenna also has circular polarization, electromagnetic compatibility, and suitable radiation efficiency.
Original languageEnglish
Number of pages5
Publication statusPublished - 26 Mar 2021
Event15th European Conference on Antennas and Propagation (EuCAP) - Düsseldorf, Germany
Duration: 22 Mar 202126 Mar 2021


Conference15th European Conference on Antennas and Propagation (EuCAP)


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