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公开(公告)号：US20240223138A1
公开(公告)日：2024-07-04
申请号：US18301321
申请日：2023-04-17
发明人： Kyung Hee HONG , Yoshiyuki TONAMI , Kyujin CHOI , Suyeon HAN , Geunyong LEE , Seungchul PYO
CPC分类号： H03F3/245 , H03F1/083 , H04B1/0466 , H03F2200/451
摘要： A power amplifier overcurrent protection circuit is provided. The overcurrent protection circuit protects a power amplifier that receives a bias current from a bias circuit and amplifies an input radio frequency (RF) signal. The current protection circuit includes an envelope detector configured to detect an envelope for a first voltage corresponding to an input radio frequency (RF) signal, a first transistor configured to receive a value of the envelope through a control terminal of the first transistor and turn on based on the value of the envelope to sink a current from a first node of a bias circuit, and a second transistor connected between a power source and the first transistor and including a control terminal connected to the first node of the bias circuit.
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2.发明公开公开(公告)号：US20230216717A1
公开(公告)日：2023-07-06
申请号：US18146872
申请日：2022-12-27
CPC分类号： H04L27/20 , H03K19/20 , H04B1/16 , H04B1/0466 , H04L25/4902
摘要： An isolated driver device comprises a first semiconductor die and a second semiconductor die galvanically isolated from each other. The second semiconductor die includes a signal modulator circuit configured to modulate a carrier signal to produce a modulated signal encoding information. A galvanically isolated communication channel implemented in the first semiconductor die and the second semiconductor die is configured to transmit the modulated signal from the second semiconductor die to the first semiconductor die. The second semiconductor die includes: a fault detection circuit configured to detect electrical faults in the second semiconductor die; a logic circuit coupled to the fault detection circuit and configured to assert a modulation bypass signal in response to a fault being detected by the fault detection circuit; and modulation masking circuitry configured to force the modulated signal to a steady value over a plurality of periods of the carrier signal in response to the modulation bypass signal being asserted. The first semiconductor die includes a respective logic circuit sensitive to the modulated signal and configured to detect a condition where the modulated signal has a steady value over a plurality of periods of the carrier signal, and to assert a fault detection signal in response to the condition being detected.
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公开(公告)号：US20190074597A1
公开(公告)日：2019-03-07
申请号：US16032798
申请日：2018-07-11
IPC分类号： H01Q19/13 , H04B7/0408 , H04B1/10 , H04B1/3805 , H04B10/114 , H04B1/04 , H04B10/112 , H04B15/02
CPC分类号： H01Q19/132 , H04B1/0466 , H04B1/0475 , H04B1/1027 , H04B1/1081 , H04B1/3805 , H04B1/40 , H04B7/0408 , H04B10/1123 , H04B10/114 , H04B10/90 , H04B15/02 , H04B2001/3811
摘要： In accordance with one or more embodiments, a communication device includes a dual-band antenna array configured to communicate RF signals in an RF band and to communicate MMW signals in a MMW frequency band with a remote device. At least one transceiver is configured to generate the RF signals conveying a command to the remote device to transmit probe signals in the MMW frequency band, to receive the probe signals via the dual-band antenna in the MMW frequency band, and is initialized with first antenna beam steering parameters to facilitate a first antenna beam of the dual-band antenna array for the operation in the MMW frequency band. A controller is configured to generate the first antenna beam steering parameters based on the probe signals and to generate the control signal to switch the dual-band antenna array to the operation in the MMW frequency band after transmission of the RF signals.
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公开(公告)号：US10079583B2
公开(公告)日：2018-09-18
申请号：US15682918
申请日：2017-08-22
发明人： Hong-Lin Chu , Hsieh-Hung Hsieh , Tzu-Jin Yeh
CPC分类号： H03G3/3042 , G01R31/382 , H01M10/48 , H03F3/24 , H03F3/45183 , H03G3/001 , H04B1/0466 , H04B2001/0416
摘要： A circuit includes a first device between a first input node and an internal node, a second device between a second input node and the internal node, a third device between the internal node and ground, a fourth device between the internal node and an output node, and a fifth device between the output node and ground. The second and third devices generate a direct current (DC) voltage on the internal node by dividing a bias voltage on the second input node. The fourth device generates, from the DC voltage, a first component of an output voltage on the output node. The first and third devices generate a modulation signal on the internal node by dividing a radio frequency (RF) signal on the first input node. The fifth device rectifies the modulation signal to generate a second output voltage component.
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公开(公告)号：US10067171B2
公开(公告)日：2018-09-04
申请号：US15129746
申请日：2015-04-08
发明人： Conor O'Keeffe , Joe Moore
CPC分类号： G01R29/10 , H01Q1/00 , H04B1/0466 , H04B1/0483 , H04B17/102 , H04B17/104 , H04B17/12 , H04B17/14 , H04B17/19
摘要： An active antenna test system comprising an active antenna unit comprising: a test signal generator arranged to generate at least a first test signal and at least one second test signal; a plurality of transmitter modules operably coupled to the test signal generator wherein the plurality of transmitter modules are arranged to simultaneously process the first test signal and at least one second test signal to produce at least one radio frequency test signal therefrom; and at least one receiver module arranged to process one or more signals falling in at least one spectral band determined to be susceptible to intermodulation distortion products caused by the at least one radio frequency test signal being generated from the first test signal and at least one second test signal; and an intermodulation determination module operably coupled to the at least one receiver module and arranged to determine a first received intermodulation performance. A first transmitter module of the plurality of transmitter modules is operably uncoupled from the test signal generator and at least a first test signal and at least one second test signal re-applied to the remaining transmitter modules, such that the intermodulation determination module determines a second received intermodulation performance in order to determine an intermodulation distortion contribution of the first transmitter module therefrom.
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公开(公告)号：US20160248466A1
公开(公告)日：2016-08-25
申请号：US15053709
申请日：2016-02-25
发明人： Kendrick Hamilton , Seann Hamer , Peter Waskowic
IPC分类号： H04B1/40
CPC分类号： H04B1/0466
摘要： An RF redundancy switch for selecting and outputting an output signal from a plurality of source signals. The RF redundancy switch selects the output signal from the input RF signals based on measurement of at least one signal validity criteria for the plurality of source signals, by application of a signal selection function thereto. The output signal is switched any time that the RF redundancy switch, using the signal selection function, determines that a different source signal should become the output signal. The RF redundancy switch allows a user to set the signal selection function by an interface. A method of intelligent RF redundancy switching between a plurality of RF input signals is also disclosed.
摘要翻译： 一种用于从多个源信号中选择和输出输出信号的RF冗余开关。 基于对多个源信号的至少一个信号有效性标准的测量，RF冗余开关通过对其施加信号选择功能来选择来自输入RF信号的输出信号。 每当RF冗余开关使用信号选择功能确定不同的源信号应成为输出信号时，输出信号就被切换。 RF冗余开关允许用户通过接口设置信号选择功能。 还公开了一种在多个RF输入信号之间进行智能RF冗余切换的方法。
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公开(公告)号：US09189953B2
公开(公告)日：2015-11-17
申请号：US13717333
申请日：2012-12-17
申请人： Itron, Inc.
CPC分类号： G08C19/00 , G01R27/06 , H04B1/0458 , H04B1/0466 , H04B17/103 , H04W52/242
摘要： Techniques for dynamic power control of a radio of a utility data collection device (e.g., utility meter configured for wireless communications) are described that utilize a detection scheme applied to a Front End Module (FEM) in the utility data collection device. A utility data collection device measures a Voltage Standing Wave Ratio (VSWR) presented to the FEM during transmission. The result of this measurement allows the utility data collection device to dynamically control the input power to a FEM transmit portion. Utilizing these techniques, the utility data collection device can adjust to environmental changes and conditions experienced in the field.
摘要翻译： 描述了利用应用于公用事业数据收集装置中的前端模块（FEM）的检测方案的用于实用数据收集装置（例如，为无线通信配置的公用事业计量器）的无线电的动态功率控制的技术。 实用数据采集装置测量在传输期间呈现给FEM的电压驻波比（VSWR）。 该测量的结果允许公用事业数据收集装置动态地控制有限元发射部分的输入功率。 利用这些技术，公用事业数据采集装置可以适应现场所经历的环境变化和条件。
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8.发明授权公开(公告)号：US09002291B2
公开(公告)日：2015-04-07
申请号：US13572595
申请日：2012-08-10
申请人： Shaofeng Xu , Zhengxiang Ma , Siqing Ye , Wei Wang , Pengfei Luo
发明人： Shaofeng Xu , Zhengxiang Ma , Siqing Ye , Wei Wang , Pengfei Luo
CPC分类号： H04B1/0466 , H04B17/103
摘要： A standing wave detection method, a standing wave detection apparatus, and a base station are disclosed. The method includes collecting, a feedback signal from a feedback path of a base station which uses a baseband multi-tone signal as a transmission signal; performing calibration on the feedback signal by using stored calibration data to obtain a reflected signal in the feedback signal; and obtaining a standing wave detection value according to the transmission signal and the reflected signal that is in the feedback signal.
摘要翻译： 公开了驻波检测方法，驻波检测装置和基站。 该方法包括从使用基带多音调信号的基站的反馈路径收集反馈信号作为发送信号; 通过使用存储的校准数据对反馈信号执行校准以获得反馈信号中的反射信号; 并根据发送信号和反馈信号中的反射信号获得驻波检测值。
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公开(公告)号：US08620225B2
公开(公告)日：2013-12-31
申请号：US13124674
申请日：2009-11-02
申请人： Akihiro Kirisawa
发明人： Akihiro Kirisawa
IPC分类号： H04W74/00
CPC分类号： H04B1/0466
摘要： From an antenna provided in a transmitter for transmitting a radio signal, the radio signal is transmitted in such a manner of: detecting transmission power of a transmission signal outputted to the antenna; detecting reflection power of a reflection signal reflected from the antenna; integrating the difference between the transmission power and the reflection power at a timing of transmitting a preamble signal of the radio signal; comparing the difference value obtained by the integration with a predetermined threshold value, and outputting an alarm in the case where the result of the comparison is that the difference value obtained by the integration is smaller than the threshold value.
摘要翻译： 从设置在用于发送无线电信号的发射机中的天线，以下列方式发送无线电信号：检测输出到天线的发送信号的发送功率; 检测从天线反射的反射信号的反射功率; 在发送无线信号的前导码信号的定时，积分发送功率与反射功率之差; 将通过积分获得的差值与预定阈值进行比较，并且在比较结果是通过积分获得的差值小于阈值的情况下输出报警。
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公开(公告)号：US20110279931A1
公开(公告)日：2011-11-17
申请号：US13130776
申请日：2009-11-25
申请人： Masatsugu Nakamura
发明人： Masatsugu Nakamura
IPC分类号： H02H9/02
CPC分类号： H04M1/72522 , G01M3/16 , G01N27/223 , G06F1/1626 , G06F1/1635 , H04B1/0466 , H04M1/18
摘要： Disclosed is an electronic device capable of controlling a power supply interrupt according to the state of water leakage. A portable telephone (1) is equipped with a water leakage detection unit (60) that detects a physical quantity which changes according to the state of water leakage and a CPU (49) that interrupts a power supply in response to the detection result from the water leakage detection unit (60). When the electrostatic capacity detected by the water leakage detection unit (60) is greater than or equal to a threshold value A and less than a threshold value B, the CPU (49) continues to interrupt the power supply until a time T1 elapses, and when the electrostatic capacity detected by the water leakage detection unit (60) is equal to or greater than the threshold value B, said CPU continues to interrupt the power supply until a time T2 which is longer than the time T1 elapses.
摘要翻译： 公开了能够根据漏水状态来控制电源中断的电子装置。 便携式电话（1）配备有漏水检测单元（60），其检测根据漏水状态而变化的物理量，以及响应于来自所述检测结果的中断电源的CPU（49） 漏水检测单元（60）。 当由漏水检测单元（60）检测到的静电电容大于或等于阈值A且小于阈值B时，CPU（49）继续中断电源直到时间T1过去，并且 当由漏水检测单元（60）检测到的静电容量等于或大于阈值B时，所述CPU继续中断电源，直到经过时间T1的时间T2为止。
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