Printed dipole-like antennas with modified groundplane for wideband circular polarization

M. J. Ammann, X. L. Bao

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Small printed dipole-like antennas which provide circular polarization with wide axial-ratio bandwidths are presented. The first antenna is an asymmetrical dipole with a slitted ground plane which is fed by an L-shaped microstrip feedline using a via. The other antenna employs a pair of asymmetrical dipole arms which are located on opposite sides of the substrate and fed by a stepped microstrip line which connects to the shorter dipole arm. It also employs groundplane slits. By utilizing the combined orthogonal surface currents along the asymmetric arms and the microstrip line structure, circular polarization is realized. Measurements show the printed dipole antenna with a via can achieve a 23% axial-ratio bandwidth whereas the antenna without via can achieve 33.5% axial-ratio bandwidth.

Original languageEnglish
Title of host publication2010 Conference Proceedings - ICECom
Subtitle of host publication20th International Conference on Applied Electromagnetics and Communications
Publication statusPublished - 2010
Event20th International Conference on Applied Electromagnetics and Communications, ICECom 2010 - Dubrovnik, Croatia
Duration: 20 Sep 201023 Sep 2010

Publication series

Name2010 Conference Proceedings - ICECom: 20th International Conference on Applied Electromagnetics and Communications

Conference

Conference20th International Conference on Applied Electromagnetics and Communications, ICECom 2010
Country/TerritoryCroatia
CityDubrovnik
Period20/09/1023/09/10

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