A novel compact reconfigurable defected ground structure resonator on coplanar waveguide technology for filter applications

2010 ◽  
Author(s):  
H B El-Shaarawy ◽  
F Coccetti ◽  
R Plana
Keyword(s):  
Coplanar Waveguide ◽  
Defected Ground Structure ◽  
Ground Structure

scholarly journals Design of a 1×2 CPW Fractal Antenna Array on Plexiglas Substrate with Defected Ground Plane for Telecommunication Applications

2021 ◽  
Vol 11 (6) ◽  
pp. 7897-7903
Author(s):  
C. Ben Nsir ◽  
J. M. Ribero ◽  
C. Boussetta ◽  
A. Gharsallah
Keyword(s):  
Antenna Array ◽  
Coplanar Waveguide ◽  
Impedance Matching ◽  
Ground Plane ◽  
Systems Design ◽  
Fractal Antenna ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Telecommunication Systems ◽  
Attractive Candidate

In this paper, a fractal antenna array for telecommunication applications is presented. The proposed antenna array is realized on a Plexiglas substrate, has 1×2 radiating elements, and dimensions of 170mm×105mm. The antenna array is composed of two Koch Snowflake patches and is fed by a Coplanar Waveguide (CPW) transmission line. Radiating elements and the ground plane are printed on the top side of the substrate. Defected Ground Structure (DGS) technique is employed to enhance the bandwidth and improve the impedance matching. The proposed antenna array operates at two frequency bands, 1.08-1.32GHz covering the GPS band and 1.7-3.7GHz covering the GSM 1800/1900, UTMS, Bluetooth, LTE, and WiMAX bands. In addition, the antenna has a good performance with efficiency and peak gain of 82% and 6.3dB respectively. These characteristics allow the antenna to be an attractive candidate for telecommunication systems. Design and analysis of different structures were carried out with Ansys HFSS.

Design of a K Band MEMS Switch with CPW Defected Ground Structure

2013 ◽  
Vol 397-400 ◽  
pp. 1844-1849
Author(s):  
Zhong Liang Deng ◽  
Cai Hu Chen ◽  
Sen Fan ◽  
Hua Gong ◽  
Xiao Fei Sun
Keyword(s):  
Defect Structure ◽  
Return Loss ◽  
Coplanar Waveguide ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Beam Structure ◽  
Electromechanical Systems ◽  
Mems Switch ◽  
Ground Line ◽  
K Band

This paper presents a K band (18GHz-26.5GHz) shunt capacitive micro-electromechanical systems (MEMS) switch. This switch used the coplanar waveguide (CPW) Defected ground structure (DGS) which is made by etching defect structure in CPW ground line. Furthermore the beam structure of the proposed switch is composed of one girder and two supporting beams. The design of the switchs structure is benefit to the apart between the DC signal and AC signal. The simulated values of the isolation of the switch on off-states is-55 dB at18.9 GHz, and the return loss at K band is greater than-0.3 dB. The pull-in voltage of the switch is 13.3 V.

A spiral-shaped defected ground structure for coplanar waveguide

2002 ◽  
Vol 12 (9) ◽  
pp. 330-332 ◽  
Author(s):  
Jong-Sik Lim ◽  
Chul-Soo Kim ◽  
Young-Taek Lee ◽  
Dal Ahn ◽  
Sangwook Nam
Keyword(s):  
Coplanar Waveguide ◽  
Defected Ground Structure ◽  
Ground Structure

scholarly journals A Compact Wideband Dual-Polarized Antenna with Harmonic Suppression Using Nonuniform Defected Ground Structure

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Lana Damaj ◽  
Anne-Claire Lepage ◽  
Xavier Begaud
Keyword(s):  
Coplanar Waveguide ◽  
Stop Band ◽  
Harmonic Suppression ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Complete Structure ◽  
Harmonic Rejection ◽  
Compact Size ◽  
Dual Polarized ◽  
Band Characteristic

A wideband dual-polarized coplanar waveguide (CPW) fed antenna integrating a wide stop-band filter is presented. The designed filter is based on a nonuniform defected ground structure (DGS) in order to obtain a wide stop-band and a compact size. This filter is used to reject harmonics and spurious radiation arising from the RF front end. The complete structure (antenna and filter) has been optimized to have a compact size of0.6×0.6λ02(λ0being the free-space wavelength at the lowest operating frequency). The realized antenna operates in the frequency range between 2.7 GHz and 5.9 GHz (bandwidth of about 74%). The isolation between feeding ports is more than 18 dB. The complete structure has a wide stop-band characteristic (103%) for harmonic rejection. The simulated numerical results have been confirmed with measurements.

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