专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US10164593B1 Accurate, low-power power detector circuits and related methods using programmable reference circuitry 有权
公开(公告)号：US10164593B1
公开(公告)日：2018-12-25
申请号：US15697940
申请日：2017-09-07
申请人： Silicon Laboratories Inc.
发明人： Navin Harwalkar , John M. Khoury
IPC分类号： H03G3/20 , H02M1/00 , H02M3/156 , G05F1/10 , H03M1/66
摘要： Embodiments of power detector circuits and related methods to compensate for undesired DC offsets generated within power detector circuits are disclosed. Input signals having input frequencies are received and converted to a magnitude signal, and reference signals are also generated. The magnitude signal may include a DC component proportional to a power of the input signal along with undesired DC offsets. The reference signal may include a DC component proportional to a power of at least one input reference signal along with undesired DC offsets. To compensate for errors introduced by the DC offsets, a programmable digital input signal is determined in a calibration mode and then applied to reference circuitry in a normal mode to compensate for the DC offsets. For the calibration mode, a difference between the magnitude signal and the reference signal is compared to a threshold value to generate a power detection output signal.

2. 发明申请

US20180351593A1 Apparatus for Radio-Frequency Receiver with Reduced Power Consumption and Associated Methods 审中-公开
公开(公告)号：US20180351593A1
公开(公告)日：2018-12-06
申请号：US15609412
申请日：2017-05-31
申请人： Silicon Laboratories Inc.
发明人： Navin Harwalkar , Arup Mukherji , John M. Khoury
IPC分类号： H04B1/16 , H03H7/01 , H03D7/14 , H03F3/189 , H03G1/00
CPC分类号： H04B1/16 , H03D7/14 , H03F3/189 , H03F2200/144 , H03F2200/165 , H03F2200/21 , H03F2200/294 , H03F2200/451 , H03G1/0005 , H03H7/0153
摘要： An apparatus includes a radio-frequency (RF) receiver. The RF receiver includes a single-balanced passive mixer driven by the output of a low noise amplifier (LNA) and a passive filter driven by an output of the single-balanced passive mixer. The RF receiver further includes a programmable gain amplifier (PGA) having an input resistance that generates noise, where the PGA is driven by an output of the passive filter, and the noise generated by the input resistance of the PGA is suppressed.

3. 发明授权

US10063203B1 Accurate, low-power power detector circuits and related methods 有权
公开(公告)号：US10063203B1
公开(公告)日：2018-08-28
申请号：US15697859
申请日：2017-09-07
申请人： Silicon Laboratories Inc.
发明人： Navin Harwalkar , John M. Khoury
IPC分类号： G05F1/67 , H02M1/00 , H02M3/156 , H03G3/20 , H03M1/66
CPC分类号： H03G3/20 , G05F1/67 , H02M3/156 , H02M2001/0022 , H03G3/3052 , H03G3/3068 , H03M1/66
摘要： Embodiments of power detector circuits and related methods to compensate for undesired DC offsets generated within power detector circuits are disclosed. Input signals having input frequencies are received and converted to a magnitude signal, and reference signals are also generated. The magnitude signal may include a DC component proportional to a power of the input signal along with undesired DC offsets. The reference signal may include a DC component proportional to a power of at least one input reference signal along with undesired DC offsets. To compensate for errors introduced by the DC offsets, a DC offset calibration signal or a gain are determined in a calibration mode and then applied in a normal mode to compensate for the DC offsets. For the calibration mode, a difference between the magnitude signal and the reference signal is compared to a threshold value to generate a power detection output signal.

4. 发明申请

US20160149604A1 Image Rejection Calibration With A Passive Network 有权
标题翻译：被动网络图像拒绝校准
公开(公告)号：US20160149604A1
公开(公告)日：2016-05-26
申请号：US14549910
申请日：2014-11-21
申请人： Silicon Laboratories Inc.
发明人： John M. Khoury , Navin Harwalkar
IPC分类号： H04B1/16 , H04L27/06 , H04B1/10
CPC分类号： H04L27/06 , G01R19/2506 , G01R23/165 , H04B1/0021 , H04B2001/0416
摘要： In one aspect, an apparatus includes: a mixer to receive a radio frequency (RF) signal and downconvert the RF signal into a second frequency signal; an amplifier coupled to the mixer to amplify the second frequency signal; an image rejection (IR) circuit coupled to the programmable gain amplifier (PGA) to orthogonally correct a gain and a phase of the amplified second frequency signal to output a corrected amplified second frequency signal; and a complex filter to filter the corrected amplified second frequency signal.
摘要翻译：一方面，一种装置包括：混合器，用于接收射频（RF）信号，并将RF信号下变频为第二频率信号; 耦合到所述混频器以放大所述第二频率信号的放大器; 耦合到所述可编程增益放大器（PGA）的正交校正放大的第二频率信号的增益和相位以输出校正的放大的第二频率信号的图像抑制（IR）电路; 以及用于对经校正的放大后的第二频率信号进行滤波的复数滤波器。

5. 发明授权

US10141971B1 Transceiver circuit having a single impedance matching network 有权
公开(公告)号：US10141971B1
公开(公告)日：2018-11-27
申请号：US15815920
申请日：2017-11-17
申请人： Silicon Laboratories Inc.
发明人： Mohamed Elkholy , Ayman Shafik , Yang Gao , Arup Mukherji , Navin Harwalkar
IPC分类号： H04B1/40 , H04B7/26 , H04B1/04 , H04B1/48
摘要： Embodiments of transceiver circuits disclosed herein include a first amplifier coupled to receive signals from an antenna during a receive (RX) mode of the transceiver circuit, a second amplifier coupled to transmit signals to the antenna during a transmit (TX) mode of the transceiver circuit, and a single impedance matching network coupled to the antenna and directly connected to a shared node to which the first and second amplifiers are directly connected. The single impedance matching network is configured to transform an impedance of the antenna into a resistance at the shared node. A control circuit is coupled to control the impedance transformation of the single impedance matching network, so as to provide a first resistance at the shared node during RX mode and a second resistance at the shared node during TX mode, wherein the second resistance is different from the first resistance.

6. 发明授权

US09960756B1 Bypass techniques to protect noise sensitive circuits within integrated circuit chips 有权
公开(公告)号：US09960756B1
公开(公告)日：2018-05-01
申请号：US15367560
申请日：2016-12-02
申请人： Silicon Laboratories Inc.
发明人： Navin Harwalkar
IPC分类号： H03K5/1252 , H05K1/02 , H03F3/195 , H01L23/66
CPC分类号： H03K5/1252 , H01L23/64 , H01L23/66 , H03F1/223 , H03F3/195 , H03F2200/114 , H03F2200/294 , H03F2200/372 , H03F2200/451 , H03K19/00346 , H05K1/0216 , H05K1/023 , H05K1/0243 , H05K3/328 , H05K2203/049
摘要： Bypass techniques are provided herein to protect noise sensitive circuits from both internal and external noise sources. According to one embodiment, an integrated circuit (IC) chip may include a noise sensitive circuit coupled between a power supply pad and a first ground pad of the IC chip. In order to protect the first ground pad of the noise sensitive circuit, two distinct bypass paths are provided to route noise current around the noise sensitive circuit. Each bypass path terminates in its own ground pad (e.g., a second ground pad and third ground pad), which is separate from the first ground pad of the noise sensitive circuit.

7. 发明申请

US20150111514A1 HIGH PERFORMANCE, LOW COST RECEIVER FRONT END 有权
标题翻译：高性能，低成本接收机前端
公开(公告)号：US20150111514A1
公开(公告)日：2015-04-23
申请号：US14057404
申请日：2013-10-18
申请人： Silicon Laboratories Inc.
发明人： Navin Harwalkar , Tim Stroud , Dan Kasha
IPC分类号： H04B1/12
CPC分类号： H04B1/123 , H04B1/18
摘要： A radio frequency (RF) receiver front end includes an RF attenuator for receiving an RF input signal and a low noise amplifier (LNA). In one form, the LNA provides a differential output signal and includes a first polarity amplifier and a plurality of second polarity amplifiers. The first polarity amplifier has an input terminal coupled to the output of the RF attenuator, an output terminal for providing a first component of the differential RF output signal, and has a first input impedance. Each of the plurality of second polarity amplifiers has an input terminal coupled to the output of said RF attenuator, and an output terminal. The output terminals of said plurality of second polarity amplifiers are coupled together and form a second component of the differential RF output signal. Each of the plurality of second polarity amplifiers has a second input impedance higher than the first input impedance.
摘要翻译：射频（RF）接收机前端包括用于接收RF输入信号的RF衰减器和低噪声放大器（LNA）。在一种形式中，LNA提供差分输出信号，并且包括第一极性放大器和多个第二极性放大器。第一极性放大器具有耦合到RF衰减器的输出的输入端，用于提供差分RF输出信号的第一分量的输出端，并具有第一输入阻抗。多个第二极性放大器中的每一个具有耦合到所述RF衰减器的输出的输入端和输出端。所述多个第二极性放大器的输出端子耦合在一起并形成差分RF输出信号的第二分量。多个第二极性放大器中的每一个具有高于第一输入阻抗的第二输入阻抗。

8. 发明授权

US10469295B2 Image rejection calibration with a passive network 有权
公开(公告)号：US10469295B2
公开(公告)日：2019-11-05
申请号：US15798590
申请日：2017-10-31
申请人： Silicon Laboratories Inc.
发明人： John M. Khoury , Navin Harwalkar
IPC分类号： H04L27/06 , H04B1/00 , G01R19/25 , G01R23/165 , H04B1/04
摘要： In one aspect, an apparatus includes: a mixer to receive a radio frequency (RF) signal and downconvert the RF signal into a second frequency signal; an amplifier coupled to the mixer to amplify the second frequency signal; an image rejection (IR) circuit coupled to the programmable gain amplifier (PGA) to orthogonally correct a gain and a phase of the amplified second frequency signal to output a corrected amplified second frequency signal; and a complex filter to filter the corrected amplified second frequency signal.

9. 发明申请

US20180054337A1 Image Rejection Calibration With A Passive Network 审中-公开
公开(公告)号：US20180054337A1
公开(公告)日：2018-02-22
申请号：US15798590
申请日：2017-10-31
申请人： Silicon Laboratories Inc.
发明人： John M. Khoury , Navin Harwalkar
IPC分类号： H04L27/06 , H04B1/00 , G01R19/25 , G01R23/165 , H04B1/04
CPC分类号： H04L27/06 , G01R19/2506 , G01R23/165 , H04B1/0021 , H04B2001/0416
摘要： In one aspect, an apparatus includes: a mixer to receive a radio frequency (RF) signal and downconvert the RF signal into a second frequency signal; an amplifier coupled to the mixer to amplify the second frequency signal; an image rejection (IR) circuit coupled to the programmable gain amplifier (PGA) to orthogonally correct a gain and a phase of the amplified second frequency signal to output a corrected amplified second frequency signal; and a complex filter to filter the corrected amplified second frequency signal.

10. 发明授权

US09190975B2 Receiver chip with multiple independent loop-through paths 有权
标题翻译：具有多个独立环通路径的接收器芯片
公开(公告)号：US09190975B2
公开(公告)日：2015-11-17
申请号：US14040000
申请日：2013-09-27
申请人： SILICON LABORATORIES INC.
发明人： Dan B. Kasha , Russell Croman , Mike R. May , Mark W. May , Navin Harwalkar , Tim Stroud
IPC分类号： H04B1/00 , H03G3/30
CPC分类号： H03G3/3052
摘要： A radio receiver and method of operating the same are disclosed. In one embodiment, the radio receiver may include a RF receive path configured to convey a first radio signal within a first band to a radio tuning circuit. The RF receive path may be controllable using a first AGC circuit. The radio receiver may also include a loop-through path configured to convey a second radio signal within a second band between an input and an output of the radio receiver. The second band may be different from the first band. The loop-through path may be controllable using a second AGC circuit.
摘要翻译：公开了一种无线电接收机及其操作方法。在一个实施例中，无线电接收机可以包括被配置为将第一频带内的第一无线电信号传送到无线电调谐电路的RF接收路径。 RF接收路径可以使用第一AGC电路来控制。无线电接收机还可以包括循环路径，其被配置为在无线电接收机的输入和输出之间的第二频带内传送第二无线电信号。第二频带可以不同于第一频带。可以使用第二AGC电路来控制环通路径。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式