In this paper, a nearly perfect metamaterial absorber is proposed with enhanced bandwidth and polarization insensitive. The proposed unit cell structure consists of outer split ring and inner asterisk shaped resonators printed on FR4 dielectric substrate. The designed metamaterial absorber gives broad bandwidth of 2.01 GHz and peak absorptivity of 99.98 and 99.94 % at 19.4 and 19.8 GHz, respectively. The simulation results prove the polarization insensitive behavior of the structure for oblique and normal incidence of the polarized waves at angles of 25° and 85°, respectively. The effective parameter is retrieved and the field distributions are studied. This metamaterial absorber is well suited for K-band applications like radar and satellite communications for uses in weather radar, imaging radar and air traffic control. © Springer India 2016.

Ramya S

Department of Communication Engineering

School of Electronics Engineering

Vellore Campus

Srinivasa Rao Inabathini

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Bandwidth Enhanced Nearly Perfect Metamaterial Absorber for K-Band Applications

Lecture Notes in Electrical Engineering Microelectronics, Electromagnetics and Telecommunications

This article presents the design of microstrip bandstop filter for ultra-wideband applications using split ring resonator. The emerging interest and ease of design for split ring resonator using microstrip transmission line technology has lead to this research. In this paper, a compact bandstop filter is designed with single and double ring split ring resonator and is simulated using HFSS, the full wave electromagnetic simulator. This structure gives a wide stopband response. The increase in the number of rings in the split ring resonator gives a sharp cut off improving the stopband performance. Simulation results show that for the bandstop filter using double ring split ring resonator, the sharp cut off is increased to-38.5dB compared to the single ring of-34.8dB and to-23dB from-18.5dB. The microstrip bandstop filter designed using single and double ring split ring resonator with ultra-wideband of 6GHz can be used for short range ultra-high speed communications in the frequency range of 4.3 to 10.4GHz. The compact filter size is 6×6mm excluding the feed. © 2015 IEEE.

2015 International Conference on Communications and Signal Processing (ICCSP)

Design of compact ultra-wideband microstrip bandstop filter using split ring resonator

Applied Physics A

Bandwidth-enhanced dual-band dual-layer polarization-independent ultra-thin metamaterial absorber

Journal of Applied Physics

Triple band polarization-independent metamaterial absorber with bandwidth enhancement at X-band

An ultrathin and broadband metamaterial absorber using multi-layer structures

IEEE Transactions on Antennas and Propagation

RCS Reduction of Waveguide Slot Antenna With Metamaterial Absorber

Journal	Data powered by TypesetLecture Notes in Electrical Engineering Microelectronics, Electromagnetics and Telecommunications
Publisher	Data powered by TypesetSpringer India
ISSN	1876-1100
Open Access	No