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公开(公告)号：US10979278B2
公开(公告)日：2021-04-13
申请号：US16957385
申请日：2018-12-29
发明人： Liuan Zhang , Yulin Tan , Ning Zhang , Jon Sweat Duster , Haigang Feng
IPC分类号： H04L27/38 , H03F1/32 , H04L27/227 , H04L27/36
摘要： The present disclosure provides a method for compensating an imbalance between an I path and a Q path of a receiver. The method includes: sending a cosine signal and a sine signal through a signal generator, transmitting the cosine signal and the sine signal in the I path and Q path respectively; calculating autocorrelation values of the I path and the Q path in the signal receiving direction; determining a comparison result of amplitudes of the cosine signal received by the I path and the sine signal received by the Q path according to the autocorrelation values; calculating an adjustment compensation value of an analog domain gain amplifier, and an amplitude value and a phase value in a digital domain according to the comparison result of amplitudes; and compensating and adjusting the signal according to the adjustment compensation value, the amplitude value and the phase value.
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22.发明申请公开(公告)号：US20200373964A1
公开(公告)日：2020-11-26
申请号：US16959437
申请日：2018-12-29
发明人： Liuan ZHANG , Ning ZHANG , Haigang FENG , Jon Sweat DUSTER , Yulin TAN
IPC分类号： H04B1/7107 , H04B1/04 , H04B1/00
摘要： The present disclosure provides a signal calibration method, apparatus and device generated based on an imbalance of I path and Q path. The method includes sending a cosine signal and a sine signal through a signal generator, transmitting the cosine signal and the sine signal in the I path and the Q path respectively, the cosine signal and the sine signal being configured to loop back to a signal receiving direction after passing through a transmitting amplifier; processing a signal obtained by a down converter in the signal receiving direction; performing a phase adjustment and an amplitude adjustment by adjusting the signal generator, gain amplifiers of I path and Q path analog domains, and a corresponding digital domain, so as to determine an appropriate phase cancellation value and an appropriate amplitude cancellation value for an image signal; and calibrating the image signal corresponding to the signal to be calibrated.
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公开(公告)号：US20200278944A1
公开(公告)日：2020-09-03
申请号：US16759626
申请日：2018-11-13
发明人： Yigao SHAO , Yulin TAN , Jon Sweat DUSTER , Ning ZHANG , Haigang FENG
摘要： The present disclosure provides a dual-edge triggered ring buffer and a communication system. The dual-edge triggered ring buffer includes a logic clock generation module and a data writing module. The logic clock generation module is configured to generate a corresponding first logic clock signal upon detecting an input of the trigger signal corresponding to the multiple first trigger signal input terminals, or to generate a corresponding second logic clock signal upon detecting an input of the trigger signal corresponding to the multiple second trigger signal input terminals. The data writing module is configured to write data output from the external system through the multiple corresponding input terminals according to the first logic clock signal or the second logic clock signal.
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