Tsung-Hsien LinChen-En LiuChen-Chien LiuWei-Hou ChiuSung-Lin TsaiTSUNG-HSIEN LIN林宗賢2019-10-242019-10-242014https://scholars.lib.ntu.edu.tw/handle/123456789/428216Frequency tracing circuit and method thereofpatentUS Patent No. 8,824,615