Miniaturization technique for forward-wave directional couplers by using open stubs and patterned ground structures

S.-K. HsuC.-C. TsengTZONG-LIN WU2018-09-102018-09-102014-11http://scholars.lib.ntu.edu.tw/handle/123456789/388739Miniaturization technique for forward-wave directional couplers by using open stubs and patterned ground structuresconference paper2-s2.0-84988220889