公开(公告)号：US10454523B1

公开(公告)日：2019-10-22

申请号：US16162098

申请日：2018-10-16

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sungil Kim ,  Jung Min Park ,  Minje Song ,  Minhyup Song ,  Jae-Sik Sim ,  Joon Tae Ahn

IPC: H04B1/7156 ,  H04B1/7136 ,  H04B7/0413 ,  G02B6/12

Abstract: A radio frequency signal generation device may include an optical comb generator configured to generate an optical comb signal including a plurality of first wavelength signals having different wavelengths; a pulse shaper configured to attenuate remaining wavelength signals excluding a plurality of second wavelength signals among the plurality of first wavelength signals; an optical-electronic converter configured to generate a radio frequency signal including a carrier frequency signal from the plurality of second wavelength signals outputted from the pulse shaper; and a pulse shaping controller configured to control the pulse shaper such that a carrier frequency of the carrier frequency signal varies according to a frequency hopping pattern.

公开(公告)号：US10763969B2

公开(公告)日：2020-09-01

申请号：US16439294

申请日：2019-06-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sungil Kim ,  Jung Min Park ,  Minje Song ,  Minhyup Song ,  Jae-Sik Sim ,  Joon Tae Ahn

IPC: H04B10/04 ,  H04B10/508 ,  H04B10/564 ,  H04L25/03

Abstract: An embodiment of the inventive concept includes an optical signal generating circuit, a controlling circuit, a waveform shaping circuit, and an output circuit. The optical signal generating circuit generates a first optical signal including pulses. The controlling circuit generates a control signal indicating a first pulse to be attenuated in magnitude among the pulses. The waveform shaping circuit attenuates a magnitude of the first pulse based on the control signal and the first optical signal, and generates a second optical signal including pulses corresponding to the pulses included in the first optical signal and the first pulse having the attenuated magnitude. The output circuit outputs an electric signal of bands corresponding to differences between frequencies of the pulses included in the second optical signal based on the second optical signal. A band corresponding to the first pulse among the bands of the electric signal is adjusted as the magnitude of the first pulse is attenuated.

公开(公告)号：US20240200927A1

公开(公告)日：2024-06-20

申请号：US18528198

申请日：2023-12-04

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Minhyup Song ,  Minje Song ,  Joon Tae Ahn ,  Taehyun Lee ,  Seungyoung Lim ,  Young Jin Jung ,  Gyu Dong Choi

IPC: G01B9/02001

CPC classification number: G01B9/02008 ,  G01B11/02

Abstract: Provided is an optical self-heterodyne detection system. The system includes a light source configured to generate light, a photodetector configured to detect the light, a programmable filter provided between the photodetector and the light source, and an electrical spectrum analyzer connected to the photodetector and configured to analyze a frequency and wavelength of the light using a detection signal of the photodetector. The light source may include a frequency comb light source.