@inproceedings{guo2012tunable, title = {A tunable low-pass filter using a liquid-metal reconfigurable periodic defected ground structure}, author = {Guo, Shuyan and Lei, Bao Jun and Hu, Wenqi and Shiroma, Wayne A and Ohta, Aaron T}, booktitle = {Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International}, pages = {1--3}, organization = {IEEE}, year = {2012}, doi = {} }