Microstrip filter with defected ground structure: a close perspective

2013 ◽  
Vol 5 (5) ◽  
pp. 589-602 ◽  
Author(s):  
Arjun Kumar ◽  
Kartikeyan V. Machavaram
Keyword(s):  
Performance Enhancement ◽  
Detailed Account ◽  
Defected Ground Structure ◽  
Electromagnetic Bandgap ◽  
Ground Structure ◽  
Microstrip Filter ◽  
Comprehensive Review ◽  
Microstrip Filters ◽  
Microwave Components

This paper presents a close but a beginner's perspective and a comprehensive review of microstrip filters with defected ground structure (DGS). The concept of DGS is inspired by photonic/electromagnetic bandgap structures (EBG/PBG) and metamaterials that are employed in microwave components to achieve a variety of performance enhancement features. Modeling of DGS and metamaterials as an L-C equivalent lumped circuit is much simpler in comparison with complex EBGs/PBGs. In this review, we have given a detailed account of the microstrip filters using DGS.

scholarly journals DEFECTED GROUND COPLANAR MULTI-BAND-PASS MICROSTRIP FILTER

2021 ◽  
Vol 9 (1) ◽  
pp. 64-68
Author(s):  
Reena Pant, Rakesh Kumar Maurya, Pradyot Kala
Keyword(s):  
Ground Plane ◽  
Inductive Coupling ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Microstrip Filter ◽  
Coupling Technique ◽  
Filter Performance ◽  
Band Pass ◽  
5 Ghz ◽  
Good Agreement

This paper presents a combination of an inductive coupling technique and coplanar ground plane microstrip filter. Here, inductive coupling technique is used to overcome the unwanted radiation loss generated by the gap between the co-planar ground plane and the transmission line which improves filter characteristics. A defected ground structure (DGS) is integrated with the proposed filter to achieve a tri-bandpass characteristic (1.85, 3.53, and 5 GHz) without hampering the filter performance. The experimental results of the proposed filter are found in good agreement with simulated results.

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 A New Microstrip Filter Using CRLH Structure and Defected Ground Structure in Antenna Application

2014 ◽  
Vol 2014 ◽  
pp. 1-5
Author(s):  
Xin Cao ◽  
Zongxi Tang ◽  
Fei Wang ◽  
Yunqiu Wu ◽  
Biao Zhang
Keyword(s):  
Bandpass Filter ◽  
Resonance Mode ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Excellent Performance ◽  
Microstrip Filter ◽  
Left Handed ◽  
Measurement Results ◽  
Good Agreement ◽  
Interdigital Capacitors

A new microstrip bandpass filter using composite right/left-handed (CRLH) mushroom structure with interdigital capacitors and defected ground structure (DGS) is proposed. The proposed filter uses CRLH mushroom structure working at its first negative resonance mode to create the passband and DGS to increase rejection outside the passband. Simulation and measurement results are in good agreement, and low in-band insertion loss and great out-band rejection have been achieved. It is demonstrated that the combination of CRLH mushroom structure with interdigital capacitors and DGS has succeeded in achieving excellent performance. This new filter can be applied in transmitting and receiving antennas.

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