In this paper, an approach is taken to reduce the size and suppress harmonics of rat race coupler with the help of Circular defected ground structure. The reduction in size is possible due to the lowering of resonant frequency which in turn is a result of slow wave effect. The proposed structure is additionally able to make the response as a wide band. The two parameters of CDGS are modeled rigorously to obtain the achieved response. First, the conventional rat race coupler is studied and later the effect of CDGS on the same structure is analyzed. © 2016 IEEE.

Shambavi K

Department of Communication Engineering

School of Electronics Engineering

Vellore Campus

Bayaskar S

Brahme D

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

2016 International Conference on Global Trends in Signal Processing, Information Computing and Communication (ICGTSPICC)

An Ultra wide Band pass filter which operates from 3.45-10.35 GHz is designed and presented. The proposed filter consists of short circuited shunt stubs and circular shaped defected ground structures (CDGS). The CDGS acts as a low pass filter which rejects higher order frequencies whereas the short circuited shunt stubs act as a high pass filter. CDGS also suppresses the harmonic and improves the frequency response characteristics of the filter. © 2014 IEEE.

2014 International Conference on Computer Communication and Informatics

Design of band pass filter with circular defected ground structure for UWB application

2015 IEEE 15th Mediterranean Microwave Symposium (MMS)

Impact of defected ground structures on the bandwidth of branch line hybrids

IEEE Microwave and Wireless Components Letters

Miniaturized ring coupler of arbitrary reduced size

IEEE Transactions on Microwave Theory and Techniques

A design of the low-pass filter using the novel microstrip defected ground structure

Compact rat race coupler with harmonic suppression using Circular defected ground structure (CDGS)

Journal	Data powered by Typeset2016 International Conference on Global Trends in Signal Processing, Information Computing and Communication (ICGTSPICC)
Publisher	Data powered by TypesetIEEE
Open Access	0