公开(公告)号：US20240429599A1

公开(公告)日：2024-12-26

申请号：US18750150

申请日：2024-06-21

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jun Han LIM ,  Hong Yeol LEE ,  Jin Cheol JEONG ,  Dong Pil CHANG

IPC: H01Q3/26 ,  H04B17/12 ,  H04B17/21

Abstract: A calibration system of a phased array antenna is disclosed, including an antenna device comprising the phased array antenna, a measurement device configured to measure outputted signals from each radiating element arrayed in the phased array antenna to generate measured value data, and an analysis device configured to analyze the measured value data to generate and transmit analysis data to the antenna device, wherein the antenna device is configured to determine a phase offset to be applied to each radiating element based on the analysis data.

公开(公告)号：US20230353094A1

公开(公告)日：2023-11-02

申请号：US18156894

申请日：2023-01-19

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jinseok PARK ,  Seong Mo MOON ,  Byoung Sun LEE ,  Jun Han LIM ,  Dong Pil CHANG

IPC: H03D7/16

CPC classification number: H03D7/166

Abstract: An I/Q signal generating apparatus and phase shift apparatus using the same are provided, the I/Q signal generating apparatus including: a first resonance circuit whose one end is connected to a first input terminal and whose other end is connected to a first output terminal; and a second resonance circuit whose one end is connected to the other end of the first resonance circuit or a second input terminal, and whose other end is connected to a second output terminal, wherein the first resonance circuit and the second resonance circuit each include a resistor, a capacitor connected in parallel with the resistor, and an inductor connected in a form of a cross between the resistor and the capacitor.

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.