@article{paperid:1032895,
author = {Pourzadi, Aref and Attari, Amir Reza and Majedi, Mohammad Saeed},
title = {A Directivity-Enhanced Directional Coupler Using Epsilon Negative Transmission Line},
journal = {IEEE Transactions on Microwave Theory and Techniques},
year = {2012},
volume = {60},
number = {11},
month = {November},
issn = {0018-9480},
pages = {3395--3402},
			numpages = {7},
keywords = {Directional coupler; directivity; even/odd modes; metamaterial; epsilon negative transmission line},
}