Dual-Polarized Frequency-Selective Surface With Two Transmission Zeros Based On Cascaded Ground Apertured Annular Ring Resonators

Keywords

Elliptic filtering; frequency-selective surface; thick metallic plate; transmission zero; wide bandwidth

Abstract

An easily assembled 3-D bandpass frequency-selective structure (FSS) is proposed, which exhibits quasi-elliptical bandpass filtering performance with two transmission poles in the passband and wide out-of-band rejection with two transmission zeros for both transverse electric (TE) and transverse magnetic (TM) polarizations. Each unit cell of the proposed FSS consists of back-to-back cascaded ground apertured annular ring resonators, while the ensemble transparent solid circular interior aperture between the resonators serves as a coupling structure, and then a resonator-coupler-resonator module is achieved. The operating principle for this FSS is also explained with the aid of an equivalent circuit model. Moreover, a parametric study is carried out and design guidelines for the proposed FSS are summarized. A design example is fabricated and the frequency responses of the FSS are tested. Measurements show that the frequency performance of the proposed FSS provides a passband with two transmission poles at around 7.2 and 7.9 GHz and a wide stopband with two transmission zeros at around 9.6 and 12.3 GHz under oblique incident wave at θ =0° and 40° for both TE and TM polarizations. This demonstrates that the proposed structure is an excellent candidate of high-performance dual-polarized FSS with wide stopband rejection.

Publication Date

8-1-2018

Publication Title

IEEE Transactions on Antennas and Propagation

Volume

66

Issue

8

Number of Pages

4077-4085

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/TAP.2018.2839898

Socpus ID

85047607756 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85047607756

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