公开(公告)号：US20230216468A1

公开(公告)日：2023-07-06

申请号：US17945212

申请日：2022-09-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jun Han LIM ,  Seong Mo MOON ,  Jin Sek PARK ,  Dong Pil CHANG

IPC: H03H7/18

CPC classification number: H03H7/18

Abstract: Disclosed is a dual-band phase shifter in which series/parallel resonance circuits are applied to a polyphase filter to implement a phase shifter, which is a core block of a multi-channel RFIC for implementing a phased array antenna system. The dual-band phase shifter may be configured by converting a capacitor (C) of an LC circuit or a CL circuit in the RFIC into a series resonance circuit and converting an inductor (L) thereof into a parallel resonance circuit, so that a signal generator operating in one frequency band can operate in a dual-band.