@inproceedings{593075aeaf9745799e2b0a1705d27e57,
title = "Design of a miniaturized branch line coupler using common defected ground structure",
abstract = "A design of size-reduced 90° branch line coupler (BLC) is described in this work. A common defected ground structure (CDGS) is adopted to design the coupler. Common DGS patterns are realized on the common ground plane of double-sided microstrip lines of which ground planes are attached to each other back-to-back. The CDGS patterns play a great role in size-reduction of microwave circuits. As an example, a BLC is designed, fabricated and measured at 1GHz for the verification of the size-reduction using CDGS. The size of the fabricated coupler is less than 50\% of the normal one without any critical degradation in performances. The measured S-parameters well agree with the simulation results.",
author = "Jongsik Lim and Jaehoon Lee and Yuckhwan Jeon and Kyunghoon Kwon and Han, \{Sang Min\} and Dal Ahn and Yongchae Jeong",
year = "2012",
doi = "10.1109/APS.2012.6348906",
language = "English",
isbn = "9781467304627",
series = "IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)",
booktitle = "2012 IEEE International Symposiumon Antennas and Propagation, APSURSI 2012 - Proceedings",
note = "Joint 2012 IEEE International Symposium on Antennas and Propagation and USNC-URSI National Radio Science Meeting, APSURSI 2012 ; Conference date: 08-07-2012 Through 14-07-2012",
}