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1. 发明授权

US11297575B2 System and method for low-power wireless beacon monitor 有权
公开(公告)号：US11297575B2
公开(公告)日：2022-04-05
申请号：US16900650
申请日：2020-06-12
申请人： Innophase, Inc.
发明人： Per Konradsson , Yang Xu
IPC分类号： H04W52/02 , H04W88/08 , H04W48/20
摘要： Selectively enabling an amplitude processing circuit and a phase processing circuit of a wireless station's polar receiver with respect to reception of a beacon signal. Such systems and methods may include sequentially demodulating symbols of the received beacon signal using at least the phase processing circuit to detect a traffic indication signal value in a data payload portion of the received beacon signal. Upon detecting a condition indicating no data traffic for the wireless station, the phase processing circuit may be turned off. The polar receiver may demodulate symbols of the received beacon signal and upon detecting a beacon preamble symbol sequence, shut off the amplitude processing circuit and set the amplitude to a fixed value. The phase processing circuit in conjunction with the fixed amplitude value may be used to demodulate symbols of the beacon signal.

2. 发明授权

US10826738B2 Systems and methods for maximizing power efficiency of a digital power amplifier in a polar transmitter 有权
公开(公告)号：US10826738B2
公开(公告)日：2020-11-03
申请号：US16241842
申请日：2019-01-07
申请人： Innophase Inc.
发明人： Jun Pan , Yang Xu
IPC分类号： H04L27/26 , H04L27/34 , H04L27/20 , H03F3/21 , H03B5/12
摘要： A polar transmitter including a digital power amplifier cell that includes a first circuit and an amplifier circuit. The first circuit is configured to receive a phase modulated carrier signal and to generate a PMOS control signal and an NMOS control signal such that the PMOS control signal and the NMOS control signal have different duty cycles. The amplifier circuit is configured to receive the PMOS control signal at a PMOS transistor and the NMOS control signal at an NMOS transistor. The first circuit is configured to align the PMOS control signal and the NMOS control signal with respect to one another such that a time that the NMOS transistor and the PMOS transistor of the amplifier circuit are simultaneously conducting is minimized. The amplifier circuit is configured to generate an amplified modulated carrier signal in response to the PMOS and NMOS control signals.

3. 发明申请

US20180287569A1 ADAPTIVE DIGITAL PREDISTORTION FOR POLAR TRANSMITTER 审中-公开
公开(公告)号：US20180287569A1
公开(公告)日：2018-10-04
申请号：US15654507
申请日：2017-07-19
申请人： Innophase, Inc.
发明人： Yang Xu , Sara Munoz Hermoso
IPC分类号： H03F1/32 , H04L27/36 , H03F1/02 , H03F3/20
CPC分类号： H03F1/3282 , H03F1/0261 , H03F1/3247 , H03F3/20 , H03F2200/451 , H04L27/361
摘要： A predistortion circuit receives an input polar signal to be transmitted, including an input amplitude signal and an input phase signal. The input polar signal is predistorted using at least one predistortion parameter selected from a lookup table. A phase-and-amplitude modulated radio-frequency signal is generated corresponding to the predistorted polar signal. A copy of the generated radio-frequency signal is provided to a polar receiver. The polar receiver is operated to generate, from the copy of the radio-frequency signal and without information relating to the generated transmit signal, a feedback polar signal including a feedback amplitude signal and a feedback phase signal. The feedback polar signal is compared to the input polar signal, the lookup table is updated in response to the comparison.

4. 发明授权

US09813033B2 System and method for inductor isolation 有权
公开(公告)号：US09813033B2
公开(公告)日：2017-11-07
申请号：US14846399
申请日：2015-09-04
申请人： Innophase Inc.
发明人： Nicolo Testi , Yang Xu
IPC分类号： H03F3/191 , H03F3/193 , H03F1/02 , H03F3/195 , H03F3/45
CPC分类号： H03F3/193 , H03F1/0261 , H03F3/191 , H03F3/195 , H03F3/45183 , H03F3/45188 , H03F3/45475 , H03F2200/294 , H03F2200/408 , H03F2200/451 , H03F2203/45138 , H03F2203/45246
摘要： An inductor isolation apparatus and method to reduce interaction between inductors on an integrated circuit.

5. 发明申请

US20170163273A1 WIDEBAND POLAR RECEIVER ARCHITECTURE AND SIGNAL PROCESSING METHODS 有权
公开(公告)号：US20170163273A1
公开(公告)日：2017-06-08
申请号：US14957134
申请日：2015-12-02
申请人： Innophase Inc.
发明人： Yang Xu , Sara Munoz Hermoso , Roc Berenguer Perez
IPC分类号： H03L7/24 , H04L27/22 , H04B1/16
CPC分类号： H03L7/24 , H03D3/007 , H03D2200/006 , H04L27/389
摘要： Wideband polar receivers and method of operation are described. A phase-modulated input signal is received at a polar receiver that includes an injection-locked oscillator. The injection-locked oscillator includes a plurality of injection points. Based on the frequency of the input signal, a particular Nth harmonic is selected, and the input signal is injected at the set of injection points corresponding to the selected Nth harmonic. The injection-locked oscillator generates an oscillator output signal, and the phase of the input signal is determined from the phase of the oscillator output signal. In some embodiments, the oscillator output signal is frequency-multiplied by N, mixed with the input signal, and filtered for use in amplitude detection. The input signal is decoded based on the phase and amplitude information.

6. 发明申请

US20170163272A1 WIDEBAND POLAR RECEIVER ARCHITECTURE AND SIGNAL PROCESSING METHODS 有权
公开(公告)号：US20170163272A1
公开(公告)日：2017-06-08
申请号：US14957131
申请日：2015-12-02
申请人： Innophase Inc.
发明人： Yang Xu , Sara Munoz Hermoso , Roc Berenguer Perez
IPC分类号： H03L7/24 , H04L27/22 , H04B1/16
CPC分类号： H03L7/24 , H04L27/22
摘要： Wideband polar receivers and method of operation are described. A phase-modulated input signal is received at a polar receiver that includes an injection-locked oscillator. The injection-locked oscillator includes a plurality of injection points. Based on the frequency of the input signal, a particular Nth harmonic is selected, and the input signal is injected at the set of injection points corresponding to the selected Nth harmonic. The injection-locked oscillator generates an oscillator output signal, and the phase of the input signal is determined from the phase of the oscillator output signal. In some embodiments, the oscillator output signal is frequency-multiplied by N, mixed with the input signal, and filtered for use in amplitude detection. The input signal is decoded based on the phase and amplitude information.

7. 发明申请

US20160072442A1 System and Method for Inductor Isolation 有权
标题翻译：电感隔离系统及方法
公开(公告)号：US20160072442A1
公开(公告)日：2016-03-10
申请号：US14846399
申请日：2015-09-04
申请人： Innophase Inc.
发明人： Nicolo Testi , Yang Xu
IPC分类号： H03F1/02 , H03F3/193 , H03H11/12
CPC分类号： H03F3/193 , H03F1/0261 , H03F3/191 , H03F3/195 , H03F3/45183 , H03F3/45188 , H03F3/45475 , H03F2200/294 , H03F2200/408 , H03F2200/451 , H03F2203/45138 , H03F2203/45246
摘要： An inductor isolation apparatus and method to reduce interaction between inductors on an integrated circuit.
摘要翻译：一种用于减少集成电路上的电感器之间的相互作用的电感器隔离装置和方法。

8. 发明申请

US20150222286A1 Apparatus and Method for Digital to Analog Conversion with Current Mirror Amplification 有权
标题翻译：用电流镜放大器进行数模转换的装置和方法
公开(公告)号：US20150222286A1
公开(公告)日：2015-08-06
申请号：US14173595
申请日：2014-02-05
申请人： Innophase, Inc.
发明人： Xuejun Zhang , Yang Xu
IPC分类号： H03M1/00 , G05F1/625 , H03M3/00 , H03F3/04 , H03M1/08
CPC分类号： H03M3/50 , G05F1/625 , G05F3/262 , H03F3/04 , H03M1/00 , H03M1/002 , H03M1/0854 , H03M1/742 , H03M1/747
摘要： A DAC using current mirrors suitable for use in a modulator. Embodiments include a current-generating circuit to provide an information signal; a bias current source; a current mirror having a mirror input transistor connected to the current generating circuit and the bias current source, and being driven by the bias current and the varying current signal and having a corresponding varying voltage signal at a control terminal; a signal shaping filter interposed between the mirror input transistor and an output mirror transistor configured to limit a bandwidth of the varying voltage signal; the output mirror transistor configured to generate a band-limited varying current signal and a mirrored bias current; and, a mirrored bias current reduction circuit connected to the output mirror transistor configured to reduce the mirrored bias current.
摘要翻译：使用适合用于调制器的电流镜的DAC。实施例包括提供信息信号的电流产生电路; 偏置电流源; 电流镜，其具有连接到电流产生电路和偏置电流源的反射镜输入晶体管，并由偏置电流和变化的电流信号驱动，并且在控制端处具有相应的变化电压信号; 插入在所述反射镜输入晶体管和被配置为限制所述变化的电压信号的带宽的输出镜像晶体管之间的信号整形滤波器; 所述输出镜晶体管被配置为产生带限变化电流信号和镜像偏置电流; 以及连接到输出镜晶体管的镜像偏置电流降低电路，被配置为减少镜像偏置电流。

9. 发明申请

US20140269999A1 Polar Receiver Signal Processing Apparatus and Methods 有权
标题翻译：极地接收机信号处理装置及方法
公开(公告)号：US20140269999A1
公开(公告)日：2014-09-18
申请号：US13839557
申请日：2013-03-15
申请人： INNOPHASE, INC.
发明人： Jian Cui , Sara Munoz Hermoso , Yang Xu
IPC分类号： H04L27/227
CPC分类号： H04L27/389 , H04L27/3818
摘要： A method of generating inphase and quadrature signals from a polar receiver providing a phase derivative signal and an envelope magnitude signal comprising receiving an estimated phase derivative signal; generating an estimated phase signal; mapping the estimated phase signal to an angular value; converting the estimated phase signal to an inphase signal and a quadrature signal based on the angular value; and, providing the inphase signal and quadrature signal to a demodulation circuit.
摘要翻译：一种从提供相位导数信号和包络幅度信号的极坐标接收机产生同相和正交信号的方法，包括接收估计的相位导数信号; 产生估计相位信号; 将估计的相位信号映射到角度值; 基于角度值将所估计的相位信号转换为同相信号和正交信号; 并向解调电路提供同相信号和正交信号。

10. 发明申请

US20140266454A1 LNA with Linearized Gain Over Extended Dynamic Range 有权
标题翻译： LNA具有线性化增益超过动态范围
公开(公告)号：US20140266454A1
公开(公告)日：2014-09-18
申请号：US13839462
申请日：2013-03-15
申请人： INNOPHASE, INC.
发明人： Nicolo Testi , Xi Li , Xuejun Zhang , Yang Xu
IPC分类号： H03G3/00
CPC分类号： H03G3/008 , H03G1/0029 , H03G1/0088 , H03G5/14 , H03G5/24
摘要： 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.
摘要翻译：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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