公开(公告)号：US20190067774A1

公开(公告)日：2019-02-28

申请号：US16108514

申请日：2018-08-22

Applicant: RESEARCH COOPERATION FOUNDATION OF YEUNGNAM UNIVERSITY

Inventor： Jong Ryul YANG ,  Bo Yoon Yoo ,  Ha Neul Lee ,  Ju Hee Son

IPC: H01P5/18 ,  H01P1/38

Abstract: Disclosed is a quasi-circulator using an asymmetric directional coupler. The quasi-circulator using the asymmetric directional coupler according to an embodiment of the present invention may enhance a characteristic of isolating a transmitting signal from a receiving signal with the same characteristic as transmitting signal loss of a symmetric directional coupler in the related art by arranging impedance of each line of a directional coupler asymmetrically.

公开(公告)号：US20230400352A1

公开(公告)日：2023-12-14

申请号：US18125305

申请日：2023-03-23

Applicant: RESEARCH COOPERATION FOUNDATION OF YEUNGNAM UNIVERSITY

Inventor： Jong Ryul YANG

IPC: G01J1/44

CPC classification number: G01J1/44 ,  G01J2001/4446

Abstract: A receiver according to an embodiment is a terahertz band receiver including an antenna configured to receive a terahertz band signal reflected or transmitted from a measurement target, a detector configured to receive a differential signal including a first input signal VTHz and a second input signal −VTHz with phase difference of 180° to each other from the antenna to detect a voltage, and operate in a concurrent mode, and a buffer amplifier configured to amplify and output a signal detected by the detector.