Skip to main content

A Frequency and Polarization Reconfigurable Circularly Polarized Antenna Using Active EBG Structure for Satellite Navigation

Liang, Bin, Sanz-Izquierdo, Benito, Parker, Edward A., Batchelor, John C. (2014) A Frequency and Polarization Reconfigurable Circularly Polarized Antenna Using Active EBG Structure for Satellite Navigation. IEEE Transactions on Antennas and Propagation, 63 (1). pp. 33-40. ISSN 0018-926X. (doi:10.1109/TAP.2014.2367537) (KAR id:46469)

PDF Publisher pdf
Language: English
Download (2MB) Preview
[img]
Preview
Official URL
http://dx.doi.org/10.1109/TAP.2014.2367537

Abstract

This paper presents a broadband frequency tunable and polarization reconfigurable circularly polarized (CP) antenna, using a novel active electromagnetic band gap (EBG) structure. The EBG surface employs identical metallic rectangular patch arrays on both sides of a thin substrate, but rotated by 90º from each other. The active bias circuits are also orthogonal for each surface, enabling the reflection phases for orthogonal incident waves to be tuned independently in a wide frequency range. By placing a wideband coplanar waveguide (CPW) fed monopole antenna above the EBG surface, and properly tuning the bias voltages across the varactors in each direction, CP waves can be generated at any desired frequency over a broad band. In accordance with simulations, the measured 3dB axial ratio (AR)bandwidth reaches 40% (1.03-1.54GHz), with good input matching(S11) and radiation patterns at six presented sampling frequencies. The polarization reconfigurability is verified by simulations and measurements, and shown to be capable of switching between left hand circular polarization (LHCP) and right hand circular polarization (RHCP).

Item Type: Article
DOI/Identification number: 10.1109/TAP.2014.2367537
Uncontrolled keywords: Electromagnetic band gap (EBG), varactor, reconfigurable, broadband antenna, circular polarization.
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering > TK7800 Electronics > TK7872.F5 Filters (electric)
Divisions: Faculties > Sciences > School of Engineering and Digital Arts > Broadband & Wireless Communications
Depositing User: John Batchelor
Date Deposited: 05 Jan 2015 14:38 UTC
Last Modified: 11 Feb 2020 04:06 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/46469 (The current URI for this page, for reference purposes)
Sanz-Izquierdo, Benito: https://orcid.org/0000-0001-7313-2520
Batchelor, John C.: https://orcid.org/0000-0002-5139-5765
  • Depositors only (login required):

Downloads

Downloads per month over past year