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公开(公告)号：US20170256860A1
公开(公告)日：2017-09-07
申请号：US15060687
申请日：2016-03-04
Inventor： DaHan Liao
IPC: H01Q13/08
CPC classification number: H01Q13/085 , H01Q13/08
Abstract: A Vivaldi antenna having an upper conductor and a lower conductor. A signal connector feed is attached to a rear end of the conductors while each conductor includes a curved flare section extending forwardly for the reception or transmission of the signal. Each conductor includes elliptical loading section or sections disposed around its flare section to enhance performance of the antenna by improving the front to back ratio as well as other factors for the antenna.
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公开(公告)号：US20180074179A1
公开(公告)日：2018-03-15
申请号：US14748272
申请日：2015-06-24
Inventor： DaHan Liao
CPC classification number: G01S13/06 , G01S7/282 , G01S7/285 , G01S7/414 , G01S13/106 , G01S13/26 , G01S13/885 , G01S13/887
Abstract: A radar system for detecting a target containing electronic components. The radar system includes a radiofrequency transmitter which generates a radar signal at a fundamental frequency. A modulator modulates the radar signal at a modulation frequency and the modulated radar signal is coupled to a transmission antenna. A receiver receives an echo from the radar signal. A filter isolates the harmonics of the fundamental frequency from the echo and a demodulator then compares the phase of the harmonics of the echo with the phase of the harmonics of the radar signal and generates an output signal representative thereof. An imaging algorithm receives the output signal and creates a two-dimensional image of the received echo and then displays that image on a display.
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公开(公告)号：US10186783B2
公开(公告)日：2019-01-22
申请号：US15060687
申请日：2016-03-04
Inventor： DaHan Liao
IPC: H01Q13/08
Abstract: A Vivaldi antenna having an upper conductor and a lower conductor. A signal connector feed is attached to a rear end of the conductors while each conductor includes a curved flare section extending forwardly for the reception or transmission of the signal. Each conductor includes elliptical loading section or sections disposed around its flare section to enhance performance of the antenna by improving the front to back ratio as well as other factors for the antenna.
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公开(公告)号：US20150084811A1
公开(公告)日：2015-03-26
申请号：US14032387
申请日：2013-09-20
Inventor： Gregory J. Mazzaro , Kelly D. Sherbondy , DaHan Liao
CPC classification number: G01S13/04 , G01S13/106 , G01S13/343 , G01S13/87 , G01S13/885 , G01V3/12
Abstract: A radar assembly for linear and nonlinear radar transmission and reception comprising a signal generator; at least one filter operatively connected to the signal generator; a transmitter operatively connected to the at least one filter for transmitting radar signals; a receiver operative to receiving received signals comprising linear and nonlinear responses from the reflected transmitted signals; the receiver comprising a first channel for processing the linear response of the received signal; a second channel for the processing the nonlinear response of the received signal; at least one switch operative to select one of the first or second channels; at least one high pass filter operatively connected to the second channel to attenuate the linear response; at least one amplifier to amplify the nonlinear response; and at least one display operatively connected to both the first and second channels for displaying both linear and nonlinear responses.
Abstract translation: 一种用于线性和非线性雷达传输和接收的雷达组件，包括信号发生器; 至少一个滤波器可操作地连接到信号发生器; 可操作地连接到所述至少一个滤波器以用于发射雷达信号的发射机; 接收器，用于从所述反射的发射信号中接收包括线性和非线性响应的接收信号; 所述接收机包括用于处理所接收信号的线性响应的第一信道; 用于处理所述接收信号的非线性响应的第二信道; 至少一个开关，用于选择所述第一或第二通道之一; 至少一个高通滤波器可操作地连接到第二通道以衰减线性响应; 至少一个放大器来放大非线性响应; 以及可操作地连接到第一和第二通道两者的至少一个显示器，用于显示线性和非线性响应。
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