公开(公告)号：US20140354365A1

公开(公告)日：2014-12-04

申请号：US14461596

申请日：2014-08-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Peng Gao ,  Yongquan Chen ,  Bingxin Li ,  Christian Grewing

IPC: H03L1/02 ,  H03L5/00

CPC classification number: H03L1/023 ,  H03L5/00 ,  H03L7/099 ,  H03L2207/06

Abstract: A device for compensating temperature drift of a voltage controlled oscillator (VCO) is provided. The VCO has at least one varactor arranged for controlling an output frequency fOut of said VCO by applying a tuning voltage VTune and simultaneously applying a bias voltage VBias on a cathode and an anode of said at least one varactor, respectively. Said device comprises a monitoring circuit and a tuning circuit. Said monitoring circuit has an input arranged to receive said VTune and is arranged to monitor said VTune and further is arranged to activate said tuning circuit based on a value of said VTune, and said tuning circuit has an output connected to said anode and is arranged to output said VBias, wherein said tuning circuit further is arranged to tune said VCO by changing said VBias so as to compensate for a temperature drift of said VCO.

Abstract translation: 提供了用于补偿压控振荡器（VCO）的温度漂移的装置。 VCO具有至少一个变容二极管，用于通过施加调谐电压VTune来控制所述VCO的输出频率fOut，同时分别在所述至少一个变容二极管的阴极和阳极上施加偏置电压VBias。 所述装置包括监视电路和调谐电路。 所述监视电路具有被布置为接收所述VTune的输入，并且被布置成监视所述VTune，并且还被布置为基于所述VTune的值激活所述调谐电路，并且所述调谐电路具有连接到所述阳极的输出，并被布置为 输出所述VBias，其中所述调谐电路还被布置为通过改变所述VBias来调谐所述VCO，以便补偿所述VCO的温度漂移。