Compact-size electronically steerable parasitic array radiator antenna

Liu, H, Gao, S and Loh, TH (2009) Compact-size electronically steerable parasitic array radiator antenna In: LAPC 2009, 2009-11-16 - 2009-11-17, Loughborough, UK.

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Abstract

In this paper, a compact electronically steerable parasitic array radiator (ESPAR) antenna that covers the frequency band from 2.4 GHz to 2.5 GHz is proposed. The top-disk-loaded monopole and folded monopole structure are employed to reduce the height of proposed ESPAR antenna. The height of top-disk-loaded monopole and folded monopole have been reduced to be lower than 1/8 wavelength, much smaller than 1/4 wavelength, i.e. the height of traditional ESPAR antenna. Furthermore, the distance between the driven element and parasitic elements, i.e. the radius of the ESPAR module, is also reduced. The proposed ESPAR module achieves a gain of 4.01 dBi and a front-back ratio of 13.9 dB despite its compactness. The beam forming is achieved by tuning the reactive load of the varactors series whose parasitic elements surround the central driven element.

Item Type:	Conference or Workshop Item (UNSPECIFIED)
Divisions :	Surrey research (other units)
Authors :	Name Email ORCID Liu, H Gao, S s.gao@surrey.ac.uk Loh, TH
Date :	16 November 2009
DOI :	10.1109/LAPC.2009.5352559
Depositing User :	Symplectic Elements
Date Deposited :	17 May 2017 11:18
Last Modified :	23 Jan 2020 16:41
URI:	http://epubs.surrey.ac.uk/id/eprint/830797

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