2007 IEEE MTT-S International Microwave Symposium, IMS 2007, page. 67 - 70, 2007-06
2008 Global Symposium on Millimeter Waves, GSMM 2008, page. 108 - 110, 2008-04
2009 14th OptoElectronics and Communications Conference, OECC 2009, 2009-07