Miniaturized lowpass and bandstop filters using controlled coupling of open-loop-ring defected ground structure

2010 ◽  
Vol 52 (11) ◽  
pp. 2575-2578 ◽  
Author(s):  
A. Boutejdar ◽  
A. Omar
Keyword(s):  
Open Loop ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Loop Ring ◽  
Bandstop Filters

scholarly journals Investigation on Microstrip Filters with CSRR Defected Ground Structure

2016 ◽  
Vol 5 (2) ◽  
pp. 28
Author(s):  
A. Kumar ◽  
R. Patel ◽  
M. V. Kartikeyan
Keyword(s):  
Split Ring Resonator ◽  
Dual Band ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Design Studies ◽  
Complementary Split Ring Resonator ◽  
Microstrip Filters ◽  
Low Pass ◽  
Bandstop Filters ◽  
High Rejection

This paper consists the design studies of complementary split ring resonator (CSRR) defected ground structure (DGS) microstrip filter with low insertion loss in the passband and high rejection in stopband with a comparison of various CSRR-DGS structure has been proposed. Various parameters of microstrip filters have been studied with CSRR-DGS such as roll off rate, bandwidth, effective inductance and capacitance. On the basis of these studies, microstrip low-pass, bandpass and dual-band bandstop filters have been designed and realized with enhanced properties of filters.

scholarly journals Design and Fabrication of a Novel Quadruple-Band Monopole Antenna Using a U-DGS and Open-Loop-Ring Resonators

2017 ◽  
Vol 6 (3) ◽  
pp. 59 ◽  
Author(s):  
A. Boutejdar ◽  
M. Challal ◽  
S. D. Bennani ◽  
F. Mouhouche ◽  
K. Djafri
Keyword(s):  
Patch Antenna ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Open Loop ◽  
Ring Resonators ◽  
Area Network ◽  
Defected Ground Structure ◽  
Total Size ◽  
Antenna Structure ◽  
Loop Ring

In this Article, a novel quadruple-band microstrip patch antenna is proposed for the systems operating at quad-band applications. The antenna structure is composed of modified rectangular patch antenna with a U-shaped defected ground structure (DGS) unit and two parasitic elements (open-loop-ring resonators) to serve as a coupling-bridge. The proposed antenna with a total size of 31×33 mm2 is fabricated and tested. The measured result indicates that the designed antenna has impedance bandwidths for 10 dB return loss reach about 180 MHz (4.4–4.58 GHz), 200 MHz (5.4–5.6 GHz), 1100 MHz (7.2–8.3 GHz), and 700 MHz (9.6–10.3 GHz), which meet the requirements of the wireless local area network (WLAN), worldwide interoperability for microwave access (WiMAX), C and X bands applications. Good agreement is obtained between measurement and simulation results.

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