公开(公告)号：US10348412B1

公开(公告)日：2019-07-09

申请号：US15859339

申请日：2017-12-30

申请人： Nanjing University of Aeronautics and Astronautics

发明人： Min Xue ,  Yuqing Heng ,  Shilong Pan

IPC分类号： H04B10/548 ,  H04B10/50 ,  H04B10/077 ,  H04B10/40 ,  H04B10/07 ,  H04B10/60

摘要： An apparatus comprises an optical signal generator configured to provide a first radiation comprising a first nominal carrier frequency and a second nominal carrier frequency, and provide a second radiation comprising a third nominal carrier frequency and a fourth nominal carrier frequency; an optical to electrical converter coupled to the optical signal generator and configured to: generate a first electrical current based on the first radiation and the second radiation without the second radiation passing through the Device under Test (DUT); and generate a second electrical current based on the first radiation and the second radiation after the second radiation passes through the DUT; and a data processor configured to determine a transfer function of the DUT at the third nominal carrier frequency and the fourth nominal carrier frequency based on the first electrical current and the second electrical current.

公开(公告)号：US20190190614A1

公开(公告)日：2019-06-20

申请号：US15859339

申请日：2017-12-30

申请人： Nanjing University of Aeronautics and Astronautics

发明人： Min Xue ,  Yuqing Heng ,  Shilong Pan

IPC分类号： H04B10/548

CPC分类号： H04B10/548 ,  H04B10/07 ,  H04B10/077 ,  H04B10/0775 ,  H04B10/0779 ,  H04B10/40 ,  H04B10/50 ,  H04B10/505 ,  H04B10/60

摘要： An apparatus comprises an optical signal generator configured to provide a first radiation comprising a first nominal carrier frequency and a second nominal carrier frequency, and provide a second radiation comprising a third nominal carrier frequency and a fourth nominal carrier frequency; an optical to electrical converter coupled to the optical signal generator and configured to: generate a first electrical current based on the first radiation and the second radiation without the second radiation passing through the Device under Test (DUT); and generate a second electrical current based on the first radiation and the second radiation after the second radiation passes through the DUT; and a data processor configured to determine a transfer function of the DUT at the third nominal carrier frequency and the fourth nominal carrier frequency based on the first electrical current and the second electrical current.

公开(公告)号：US10761401B1

公开(公告)日：2020-09-01

申请号：US16668308

申请日：2019-10-30

申请人： Nanjing University of Aeronautics and Astronautics

发明人： Dan Zhu ,  Wenjuan Chen ,  Shilong Pan ,  Chenxu Xie ,  Jiang Liu

IPC分类号： G02F1/35 ,  G02F1/01

摘要： An apparatus includes a signal modulator configured to receive a radio frequency (RF) input signal having frequency bands and spanning a first frequency range within a second frequency range, and provide down-converted signals by converting each frequency band of the RF input signal down to a target frequency range. The apparatus further includes digital RF memories (DRFMs) configured to provide intermediate interfering signals by modulating at least one of the down-converted signals, and an interfering signal generator configured to provide up-converted signals by converting the intermediate interfering signals collectively up to a third frequency range, wherein the third frequency range is within the second frequency range, and provide an interfering RF output signal by combining the up-converted signals, wherein the interfering RF output signal spans the third frequency range.

公开(公告)号：US10205518B1

公开(公告)日：2019-02-12

申请号：US15854712

申请日：2017-12-26

申请人： Nanjing University of Aeronautics and Astronautics

发明人： Min Xue ,  Shilong Pan ,  Ting Qing ,  Shupeng Li ,  Yuqing Heng

IPC分类号： H04B10/07 ,  H04B10/40 ,  H04B10/50 ,  H04B10/60 ,  H04B10/077

摘要： An apparatus comprises an optical detecting signal generator configured to provide an optical spectrum comprising two frequency carriers, the two frequency carriers having two different nominal carrier frequencies, and the output port of the optical detecting signal generator being further configured to be coupled to a device under test (DUT); an optical to electrical converter configured to generate a first electrical current based on the optical spectrum without the optical spectrum passing through the DUT; and generate a second electrical current based on the optical spectrum after the optical spectrum passes through the DUT; and a data processor coupled to the optical to electrical converter, the data processor being configured to determine a transfer function of the DUT at an average of the two different nominal carrier frequencies based on the first electrical current and the second electrical current.

公开(公告)号：US20190028191A1

公开(公告)日：2019-01-24

申请号：US15854712

申请日：2017-12-26

申请人： Nanjing University of Aeronautics and Astronautics

发明人： Min Xue ,  Shilong Pan ,  Ting Qing ,  Shupeng Li ,  Yuqing Heng

IPC分类号： H04B10/077

摘要： An apparatus comprises an optical detecting signal generator configured to provide an optical spectrum comprising two frequency carriers, the two frequency carriers having two different nominal carrier frequencies, and the output port of the optical detecting signal generator being further configured to be coupled to a device under test (DUT); an optical to electrical converter configured to generate a first electrical current based on the optical spectrum without the optical spectrum passing through the DUT; and generate a second electrical current based on the optical spectrum after the optical spectrum passes through the DUT; and a data processor coupled to the optical to electrical converter, the data processor being configured to determine a transfer function of the DUT at an average of the two different nominal carrier frequencies based on the first electrical current and the second electrical current.