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Patent Agency Ranking
公开(公告)号：US20140044266A1
公开(公告)日：2014-02-13
申请号：US13922643
申请日：2013-06-20
Inventor： Sang Tae KIM , Yong Seok CHOI , Gwang Moon PARK , Seong Yun LEE , Haeng Sook RO , Mi Kyung SUK
IPC: G10K11/00
CPC classification number: G10K11/002 , H03D7/165
Abstract: The present invention provides a real-time noise reduction apparatus for a radio monitoring system, including a dual channel digitizing unit configured to convert signals, subject to frequency down-conversion and inputted to two channels, into digital signals and a Digital Signal Processor (DSP) configured to reduce noise from time sample regions of the signals, received from the dual channel digitizing unit, in a time domain using a correlation method between samples through the delayed feedback means.
Abstract translation: 本发明提供了一种用于无线电监测系统的实时降噪装置，包括双通道数字化单元，其被配置为将经过降频转换并被输入到两个通道的信号转换为数字信号，以及数字信号处理器 ），其被配置为使用通过所述延迟反馈装置的样本之间的相关方法在时域中从所述双通道数字化单元接收的信号的时间采样区域减少噪声。
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公开(公告)号：US20240113764A1
公开(公告)日：2024-04-04
申请号：US18319125
申请日：2023-05-17
Inventor： Gwang Moon PARK
CPC classification number: H04B7/0854 , H04B17/23 , H04B17/25
Abstract: A weak signal detection device for detecting a weak signal appearing intermittently with a level that is less than or equal to internal noise of a radio frequency (RF) receiving part may comprise: a cross-correlation spectrum processing part configured to generate a cross-correlation spectrum using a correlation between RF receiving channels; and a waveform combiner configured to generate an output spectrum having a spectrum persistent function by assigning weight values to a current waveform and a previous waveform of the cross-correlation spectrum.
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公开(公告)号：US20230066195A1
公开(公告)日：2023-03-02
申请号：US17710625
申请日：2022-03-31
Inventor： Byung Chan KIM , Kang Hee KIM , Haeng Sook RO , Gwang Moon PARK , Soo Ho SOHN , Ki Cheol TAE
IPC: H04L27/00
Abstract: In the present invention, in classifying modulation types of a plurality of modulation signals by using a classifier (an artificial neural network model based on machine learning), the classifier may classify the modulation types of the modulation signals by using pieces of I/Q data, sampled with one sampling frequency, as input data, and thus, may quickly classify the modulation signals.
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公开(公告)号：US20220381867A1
公开(公告)日：2022-12-01
申请号：US17691593
申请日：2022-03-10
Inventor： Kang Hee KIM , Byung Chan KIM , Haeng Sook RO , Gwang Moon PARK , Soo Ho SOHN , Ki Cheol TAE
Abstract: A directive direction finding apparatus may comprise: a directivity-enabled antenna array in which a constituent antenna or antenna subarray has directivity in the same direction; an RF/IF receiver connected to the directivity-enabled antenna array; a digital receiver connected to the RF/IF receiver; a direction finder connected to the digital receiver; a directivity control unit to control an operation of the directivity-enabled antenna array; and a transport/control interface connected to the direction finder and to manage control and operation of the directivity-enabled antenna array, the RF/IF receiver, the digital receiver, the direction finder and the directive control unit.
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公开(公告)号：US20170141482A1
公开(公告)日：2017-05-18
申请号：US15209951
申请日：2016-07-14
Inventor： Gwang Moon PARK , Haeng Sook RO , Sang In CHO , Yong Seok CHOI
Abstract: Disclosed are a variable antenna and an apparatus for detecting a radio signal. The variable antenna includes: a first receiving unit including at least one liquid metal antenna element; a second receiving unit including at least one liquid metal antenna element having a length different from a length of the first receiving unit; and a gain control unit configured to electrically adjust lengths of the liquid metal antenna elements for one of the first receiving unit and the second receiving unit according to the frequency of a received signal, wherein each antenna array realized by the liquid metal antenna elements of the first receiving unit and the second receiving unit is arranged in a single bay.
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