Dual stopband frequency selective surface by using half rings and slots

Abstract

In this letter, a novel technique is proposed to design a dual stopband frequency selective surface (FSS) by combining a bandpass filter with its complementary structure in series. It displays flexibility to control the stopband frequencies which is the most attractive feature of this design. The proposed FSS filter is also very easy to fabricate, consisting of a single metal layer on a dielectric layer. A theoretical equivalent circuit model is proposed to characterize the structure. Explanation of the proposed filter response based on analysis of the equivalent circuit is discussed in detail. It is shown that the frequency response of the proposed FSS is almost the same for different incident angles. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1136–1139, 2016

Convoluted Meander Line-Inspired Metallic Surface Filter for Bluetooth and WLAN Bands

“…Te polarization insensitivity of the FSS is highly desirable for practical applications, such as absorbers, refectors, polarization converters, AMC, and EM shielding beam shaping. Tis highly demanded characteristic of FSS is optimized and presented through the state of art by several researchers in [13][14][15][16][17][18][19][20][21][22]22].…”