Ho J.-H.Cheng C.-C.Tsou N.-T.Chen C.-S.Shieh J.Lee C.-K.TZONG-LIN JAY SHIEHCHUIN-SHAN CHENWEN-JONG WU2019-11-272019-11-27200714244133389781424413331https://www.scopus.com/inward/record.uri?eid=2-s2.0-51349131992&doi=10.1109%2fISAF.2007.4393387&partnerID=40&md5=a351a110c8b8b36a7ee2afc3c2f857abhttps://scholars.lib.ntu.edu.tw/handle/123456789/433264Ultrasonic transmitters far field beam pattern altering with boundary conditions designconference paper10.1109/ISAF.2007.43933872-s2.0-51349131992