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Frequency agile small smart antenna

Liu, Haitao and Gao, Steven and Loh, Tian Hong (2010) Frequency agile small smart antenna. In: Proceedings of the Fourth European Conference on Antennas and Propagation. IEEE. ISBN 978-1-4244-6431-9. E-ISBN 978-84-7653-472-4. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:35818)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)

Abstract

In this paper, a frequency agile small smart antenna composed of a compact Electronically Steerable Passive Array Radiator (ESPAR) antenna is presented. The frequency agile range from 2.3GHz to 2.6GHz is examined in terms of return loss, antenna gain and radiation pattern. Proposed frequency agile smart antenna is electrically small in size. Tightly coupled top-disk loaded monopole and folded monopoles are used to reduce height of ESPAR antenna. The height of proposed ESPAR antenna is lower than 1/10 wavelength. The radius of proposed ESPAR antenna is smaller than 1/4 wavelength. Proposed antenna reports a maximum gain of 4.0dBi and a front-backratio about 12dB. Fluctuation of antenna gain over different frequencies is studied and presented in this paper. Beamforming can be achieved by tuning reactive loads in series with those parasitic folded monopoles surrounding centre driven top-disk loaded monopoles.

Item Type: Book section
Uncontrolled keywords: loaded antennas; radio frequency; varactors; parasitic capacitance; array signal processing; surface impendance; frequency conversion; antenna radiation patterns; antenna measurements; wavelength measurements
Subjects: T Technology
Divisions: Faculties > Sciences > School of Engineering and Digital Arts > Broadband & Wireless Communications
Depositing User: Tina Thompson
Date Deposited: 30 Oct 2013 13:58 UTC
Last Modified: 06 May 2020 03:08 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/35818 (The current URI for this page, for reference purposes)
Gao, Steven: https://orcid.org/0000-0002-7402-9223
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