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1. 发明授权

US09948347B2 Calibrating a transceiver circuit 有权
公开(公告)号：US09948347B2
公开(公告)日：2018-04-17
申请号：US14751439
申请日：2015-06-26
申请人： Lime Microsystems Ltd
发明人： Srdjan Milenkovic
IPC分类号： H04B1/38 , H04L5/16 , H04B1/40 , H04B17/11 , H04B17/21 , H04B17/12 , H04B17/00
CPC分类号： H04B1/40 , H04B17/0085 , H04B17/11 , H04B17/12 , H04B17/21
摘要： A method of calibrating a transceiver circuit including transmission circuitry for processing an input signal to produce an output signal including the input signal modulated onto a carrier signal, and reception circuitry arranged to take a modulated signal including a signal modulated onto a carrier signal and to output the signal demodulated from the carrier signal. The method includes: selectively coupling the transmission circuitry to the reception circuitry; introducing a reference signal into the transmission circuitry, the reference signal causing a plurality of components of different frequencies to be present in a calibration signal in the reception circuitry; measuring the power, and typically the received signal strength indication (RSSI) of the calibration signal including the plurality of components; and adjusting operation of the transmission and reception circuitry to increase the amplitude of a first set of the components relative to the amplitude of a second set of the components.

2. 发明授权

US09252818B2 Transmitter and receiver circuits 有权
标题翻译：发射机和接收机电路
公开(公告)号：US09252818B2
公开(公告)日：2016-02-02
申请号：US14085231
申请日：2013-11-20
申请人： Lime Microsystems Ltd
发明人： Srdjan Milenkovic , Robin Miller , Ebrahim Bushehri
IPC分类号： H04B1/38 , H04B1/00
CPC分类号： H04B1/0014 , H04B1/0007 , H04B1/403
摘要： An RF transceiver apparatus has transmitter circuitry receiving transmission signals at a transmitter baseband frequency and converting the signals to a transmission frequency, and receiver circuitry receiving signals at a reception frequency and converting to a receiver baseband frequency. A first digital local oscillator and a first mixer convert between the transmitter baseband frequency and a transmitter intermediate frequency. A second digital local oscillator and a second mixer convert between a receiver intermediate frequency and the receiver baseband frequency. A third mixer frequency receives a local oscillator signal for frequency conversion between the transmitter intermediate frequency and the transmission frequency. A fourth mixer frequency receives a local oscillator signal for frequency conversion between the reception frequency and the receiver intermediate frequency. A third local oscillator produces an RF oscillator signal to the third mixer and the fourth mixer to provide the local oscillator signal.
摘要翻译： RF收发器装置具有发射机电路，以发射机基带频率接收传输信号，并将信号转换为传输频率，接收机电路以接收频率接收信号并转换为接收机基带频率。第一数字本地振荡器和第一混频器在发射机基带频率和发射机中频之间进行转换。第二数字本地振荡器和第二混频器在接收机中频和接收机基带频率之间进行转换。第三混频器接收本地振荡器信号用于发射机中频和发射频率之间的频率转换。第四混频器在接收频率和接收机中频之间接收用于频率转换的本地振荡器信号。第三本地振荡器产生到第三混频器和第四混频器的RF振荡器信号以提供本地振荡器信号。

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