Varactor-tunable frequency selective surface with an embedded bias network

doi:10.1088/1674-1056/22/9/094103

Abstract A new technique for designing a varactor-tunable frequency selective surface (FSS) with an embedded bias network is proposed and experimentally verified. The proposed FSS is based on a square-ring slot FSS. The frequency tuning is achieved by inserting varactor diodes between the square mesh and each unattached square patch. The square mesh is divided into two parts for biasing the varactor diodes. Full-wave numerical simulations show that a wide tuning range can be achieved by changing the capacitances of these loaded varactors. Two homo-type samples using fixed lumped capacitors are fabricated and measured using a standard waveguide measurement setup. Excellent agreement between the measured and simulated results is demonstrated.

Keywords: frequency selective surface varactor diodes embedded bias network

Received: 01 September 2012
Revised: 07 November 2012
Accepted manuscript online:

PACS:	41.20.Jb	(Electromagnetic wave propagation; radiowave propagation)
	78.20.Ci	(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
	84.40.Az	(Waveguides, transmission lines, striplines)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 60901029, 61172148, and 60925005) and the Natural Science Foundation of Shaanxi Province, China (Grant No. 2011JQ8040).

Corresponding Authors: Lin Bao-Qin
E-mail: aflbq@sina.com

Cite this article:

Lin Bao-Qin (林宝勤), Qu Shao-Bo (屈绍波), Tong Chuang-Ming (童创明), Zhou Hang (周航), Zhang Heng-Yang (张衡阳), Li Wei (李伟) Varactor-tunable frequency selective surface with an embedded bias network 2013 Chin. Phys. B 22 094103

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