公开(公告)号：WO2014151794A1

公开(公告)日：2014-09-25

申请号：PCT/US2014/026459

申请日：2014-03-13

Applicant: INNOPHASE, INC.

Inventor： TESTI, Nicolo ,  LI, Xi ,  ZHANG, Xuejun ,  XU, Yang

IPC: H03F1/26 ,  H03G3/30

CPC classification number: H03G3/008 ,  H03G1/0029 ,  H03G1/0088 ,  H03G5/14 ,  H03G5/24

Abstract: A low noise amplifier including a variable gain amplifier stage configured to accept an input signal and to provide a load driving signal; a tunable bandpass filter connected as a load to the variable gain amplifier stage, wherein the bandpass filter includes a cross-coupled transistor pair, and at least one cross-coupled compensation transistor pair biased in a subthreshold region configured to add a transconductance component when the load driving signal is of a magnitude large enough to decreases a transconductance of the cross-coupled transistor pair; and, a controller circuit configured to tune the bandpass filter. The filter can be tuned in respect to the frequency and the quality factor Q.

Abstract translation: 一种低噪声放大器，包括可变增益放大器级，其被配置为接受输入信号并提供负载驱动信号; 作为负载连接到可变增益放大器级的可调谐带通滤波器，其中所述带通滤波器包括交叉耦合晶体管对，以及偏置在亚阈值区域中的至少一个交叉耦合补偿晶体管对，其配置成当所述跨导分量 负载驱动信号的幅度足够大以减小交叉耦合晶体管对的跨导; 以及配置为调谐带通滤波器的控制器电路。 滤波器可以根据频率和质量因子Q进行调整。

公开(公告)号：WO2015030867A2

公开(公告)日：2015-03-05

申请号：PCT/US2014/030510

申请日：2014-03-17

Applicant: INNOPHASE, INC.

Inventor： XU, Yang ,  ZHANG, Xuejun

IPC: H03C3/02

CPC classification number: H04L25/03834 ,  H03M1/685 ,  H04L25/0384 ,  H04L27/34

Abstract: Single-bit transmitter modulator having a digital pulse shaping filter configured to shape data pulses of an inphase signal and quadrature signal; an upsampling filter configured to increase the sample rate of the inphase signal and quadrature signal; a sigma-delta modulator providing a one-bit inphase output signal and a one-bit quadrature output signal; an inphase low-order analog low pass filter coupling the one-bit inphase output signal to an inphase channel input of a quadrature modulator, and a quadrature low-order analog low pass filter coupling the one-bit quadrature output signal to a quadrature channel input of a quadrature modulator; and, wherein the quadrature modulator is connected to a carrier signal generator and is configured to generate an inphase and quadrature modulated carrier.

Abstract translation: 具有配置成形成同相信号和正交信号的数据脉冲的数字脉冲整形滤波器的单比特发射机调制器; 上采样滤波器，被配置为增加同相信号和正交信号的采样率; 提供一位同相输出信号和一位正交输出信号的Σ-Δ调制器; 同相低阶模拟低通滤波器，其将所述一位同相输出信号耦合到正交调制器的同相信道输入;以及正交低阶模拟低通滤波器，其将所述一位正交输出信号耦合到正交信道输入 的正交调制器; 并且其中正交调制器连接到载波信号发生器并且被配置成生成同相和正交调制载波。