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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
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。
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公开(公告)号：WO2020086578A1
公开(公告)日：2020-04-30
申请号：PCT/US2019/057432
申请日：2019-10-22
Applicant: INNOPHASE, INC.
Inventor： TESTI, Nicolo
IPC: G04F10/00 , H04L27/227 , H03L7/099 , H03L7/091
Abstract: Systems and methods are described for determining a phase measurement difference between a received modulated signal and a local clock signal. An adjusted local clock phase measurement may be determined by subtracting, from the phase measurement difference, a phase correction that is based on the frequency difference between the modulator signal's carrier frequency and the local clock's frequency. A phase modulation value may be generated by scaling the adjusted local clock phase measurement. The scaling may be based on a ratio of the modulated signal's carrier frequency and the local clock's frequency. The phase correction may be based on (i) a count of periods of the modulated signal occurring between each corrected phase measurement and (ii) a difference between the carrier frequency and the local clock frequency.
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Patent Agency Ranking
公开(公告)号：WO2020072167A9
公开(公告)日：2020-04-09
申请号：PCT/US2019/049551
申请日：2019-09-04
Applicant: INNOPHASE, INC.
Inventor： TESTI, Nicolo , XU, Yang
Abstract: A low noise amplifier includes at least two variable gain amplifier stages, each variable gain amplifier configured to accept an input signal and to provide a load driving signal; a tunable bandpass filter connected as a load to each variable gain amplifier stage, wherein each bandpass filter includes a resonant tank, each resonant tank including an inductor, wherein each inductor of each resonant tank is oriented in orthogonal relation with respect to each respective longitudinal axis of each next inductor, the orthogonal relation of the respective longitudinal axes configured to reduce mutual coupling between the tunable bandpass filters; 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 as a function of a load driving signal; and, a controller circuit configured to tune each tunable bandpass filter.
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公开(公告)号：WO2020072167A2
公开(公告)日：2020-04-09
申请号：PCT/US2019/049551
申请日：2019-09-04
Applicant: INNOPHASE, INC.
Inventor： TESTI, Nicolo , XU, Yang
IPC: H03F1/26
Abstract: A low noise amplifier includes at least two variable gain amplifier stages, each variable gain amplifier configured to accept an input signal and to provide a load driving signal; a tunable bandpass filter connected as a load to each variable gain amplifier stage, wherein each bandpass filter includes a resonant tank, each resonant tank including an inductor, wherein each inductor of each resonant tank is oriented in orthogonal relation with respect to each respective longitudinal axis of each next inductor, the orthogonal relation of the respective longitudinal axes configured to reduce mutual coupling between the tunable bandpass filters; 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 as a function of a load driving signal; and, a controller circuit configured to tune each tunable bandpass filter.
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公开(公告)号：WO2020146408A1
公开(公告)日：2020-07-16
申请号：PCT/US2020/012607
申请日：2020-01-07
Applicant: INNOPHASE, INC.
Inventor： TESTI, Nicolo
Abstract: An example process includes reducing a quality factor of a first tunable bandpass filter, used, for example, in a low-noise amplifier stage of a polar receiver. A first wideband test signal centered at a desired center frequency of a second tunable bandpass filter is received. A frequency response of the second tunable bandpass filter to the first wideband test signal is estimated using a Fast Fourier Transform (FFT) signal processor. At least a resonant frequency or a quality factor of the second tunable bandpass filter are calibrated based at least in part on a portion of the estimated frequency response of the second tunable bandpass filter obtained from the FFT signal processor. Frequency response characteristics of the first tunable bandpass filter may be similarly tuned in accordance with the example process.
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公开(公告)号：WO2020072167A3
公开(公告)日：2020-04-09
申请号：PCT/US2019/049551
申请日：2019-09-04
Applicant: INNOPHASE, INC.
Inventor： TESTI, Nicolo , XU, Yang
Abstract: A low noise amplifier includes at least two variable gain amplifier stages, each variable gain amplifier configured to accept an input signal and to provide a load driving signal; a tunable bandpass filter connected as a load to each variable gain amplifier stage, wherein each bandpass filter includes a resonant tank, each resonant tank including an inductor, wherein each inductor of each resonant tank is oriented in orthogonal relation with respect to each respective longitudinal axis of each next inductor, the orthogonal relation of the respective longitudinal axes configured to reduce mutual coupling between the tunable bandpass filters; 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 as a function of a load driving signal; and, a controller circuit configured to tune each tunable bandpass filter.
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公开(公告)号：WO2018191448A1
公开(公告)日：2018-10-18
申请号：PCT/US2018/027222
申请日：2018-04-12
Applicant: INNOPHASE, INC.
Inventor： TESTI, Nicolo
IPC: G04F10/00
CPC classification number: G04F10/005
Abstract: Systems and methods are provided for converting time measurements to digital value representing phase. Such systems and methods use a ring oscillator to create a coarse measurement of the time difference between first and second rising edges of a modulated signal. A two-dimensional Vernier structure is used to create a fine resolution measurement of the error in the coarse measurement. The coarse and fine measurements are combined to calculate a digital time measurement. A digital time output is calculated as the difference in successive digital time measurements. An offset digital time output is calculated as a difference in a digital time output in relation to a carrier period offset. The offset digital time output is scaled and accumulated to calculate the integrated time signal. The integrated time signals are synchronized to the carrier frequency to output a series of final phase measurements.
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