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公开(公告)号：US20210013833A1
公开(公告)日：2021-01-14
申请号：US17034099
申请日：2020-09-28
发明人： Sudipto Chakraborty
摘要： A variable-gain power amplifying technique includes generating, with a network of one or more reactive components included in an oscillator, a first oscillating signal, and outputting, via one or more taps included in the network of the reactive components, a second oscillating signal. The second oscillating signal has a magnitude that is proportional to and less than the first oscillating signal. The power amplifying technique further includes selecting one of the first and second oscillating signals to use for generating a power-amplified output signal, and amplifying the selected one of the first and second oscillating signals to generate the power-amplified output signal.
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公开(公告)号：US20190036558A1
公开(公告)日：2019-01-31
申请号：US16148891
申请日：2018-10-01
发明人： Sudipto Chakraborty
摘要： A circuit and apparatus for filtering harmful harmonics is disclosed. The circuit and apparatus include a power amplifier core that uses equally sized inverter based amplifiers. The amplifier core cells provide uniform load to all phases of a fundamental frequency to cancel all harmonics at an output. The power amplifier stages are driven into nonlinearity, and the combination of harmonics is performed at the output by varying series connected capacitors. The harmonic combination is performed at the output, leaving no further scope of nonlinearity in the signal chain.
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公开(公告)号：US20170288796A1
公开(公告)日：2017-10-05
申请号：US15627249
申请日：2017-06-19
发明人： Sudipto Chakraborty
摘要： A variable-gain power amplifying technique includes generating, with a network of one or more reactive components included in an oscillator, a first oscillating signal, and outputting, via one or more taps included in the network of the reactive components, a second oscillating signal. The second oscillating signal has a magnitude that is proportional to and less than the first oscillating signal. The power amplifying technique further includes selecting one of the first and second oscillating signals to use for generating a power-amplified output signal, and amplifying the selected one of the first and second oscillating signals to generate the power-amplified output signal.
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公开(公告)号：US09743354B2
公开(公告)日：2017-08-22
申请号：US14588629
申请日：2015-01-02
发明人： Sudipto Chakraborty
IPC分类号： H04W52/02
CPC分类号： H04W52/0229 , Y02D70/00
摘要： A wireless receiver includes a receiver mixer having at least two sets of switches connected to selectively pass a portion of a received RF signal to the mixer's output. Different sets of the switches are activated by different phases of a local oscillator to effect passing of different phases of the RF signal to the output. These outputs are combined in various ways to obtain operation of the main receiver and the wake up receiver modes at harmonically related carrier frequencies with as low as possible subharmonic multi-phase clock generation network. This can be used to detect a wake up signal with a very fast response time, minimal area overhead, minimal power usage, and equal loading to the local oscillator network providing the phases to the mixer to maintain excellent phase balance and precise harmonic selectivity.
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公开(公告)号：US09685907B2
公开(公告)日：2017-06-20
申请号：US14755462
申请日：2015-06-30
发明人： Sudipto Chakraborty
CPC分类号： H03B5/1212 , H03B5/1228 , H03B5/1265 , H03F3/211 , H03F3/213 , H03F3/245 , H03G1/0005 , H03G3/3042 , H04B2001/0416
摘要： A variable-gain power amplifying technique includes generating, with a network of one or more reactive components included in an oscillator, a first oscillating signal, and outputting, via one or more taps included in the network of the reactive components, a second oscillating signal. The second oscillating signal has a magnitude that is proportional to and less than the first oscillating signal. The power amplifying technique further includes selecting one of the first and second oscillating signals to use for generating a power-amplified output signal, and amplifying the selected one of the first and second oscillating signals to generate the power-amplified output signal.
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公开(公告)号：US20170149512A1
公开(公告)日：2017-05-25
申请号：US14946360
申请日：2015-11-19
摘要： An RF or other high frequency transceiver including a loopback reference channel for measurement of an absolute power level. A transmit channel in the transceiver includes a programmable power amplifier that can be controlled to operate at a selected power level, and a receive channel including a receive amplifier, mixers, filters, and analog-to-digital converters. The loopback reference channel includes a self-biased amplifier, followed by a series of buffers that generate a square wave from the received signal, and an attenuator applying an attenuation gain to the square wave. The transmit power at a programmed power level can be calculated from ratios of a measured power level of a transmitted signal as received by the receive channel to the measured power level of the transmitted signal using the loopback reference channel.
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公开(公告)号：US20170104508A1
公开(公告)日：2017-04-13
申请号：US15140979
申请日：2016-04-28
CPC分类号： H04B5/0031 , H04B5/0037
摘要： A method, receiver and system for isolated wireless data transfer are disclosed. The receiver includes a switching mixer connected to receive a data signal and a local oscillator signal and to output a mixed differential signal, a programmable gain amplifier using an operational transconductance amplifier (OTA) and resistive feedback, the OTA connected to receive the mixed differential signal and to provide an amplified differential signal to a polyphase filter, and an analog demodulator to demodulate the output of the polyphase filter and provide digital output.
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8.发明授权SoC transceiver with single ended/differential modes, tunable capacitor and latch 有权具有单端/差分模式的SoC收发器，可调谐电容器和锁存器公开(公告)号：US09331734B2
公开(公告)日：2016-05-03
申请号：US14740961
申请日：2015-06-16
CPC分类号： H04B1/401 , H03F3/24 , H04B1/0458 , H04B1/18 , H04B2001/0408
摘要： A system on a chip (SoC) includes a transceiver comprising a transmitter and a receiver, wherein at least one of the transmitter and receiver has a configurable portion that can be configured to operate in a single ended mode and in a differential mode. Two interface pins are provided for coupling the transceiver to an antenna via a matching network, wherein the two interface pins are shareably coupled to the transmitter and to the receiver. A tunable capacitor is coupled to differential signal lines of the configurable portion, wherein the tunable capacitor is configured to be tuned to optimize impedance matching of the configurable portion for each mode of operation.
摘要翻译： 芯片上的系统（SoC）包括收发器，其包括发射器和接收器，其中发射器和接收器中的至少一个具有可配置部分，其可被配置为以单端模式和差分模式操作。 提供两个接口引脚用于通过匹配网络将收发器耦合到天线，其中两个接口引脚可共享地耦合到发射器和接收器。 可调电容器耦合到可配置部分的差分信号线，其中可调谐电容器被配置为调整以优化每个操作模式的可配置部分的阻抗匹配。
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公开(公告)号：US09294061B2
公开(公告)日：2016-03-22
申请号：US14869643
申请日：2015-09-29
CPC分类号： H03G3/3042 , H03F1/02 , H03F3/24 , H04B1/04 , H04B1/0458 , H04B1/10 , H04B1/44 , H04B2001/0408 , H04B2001/045
摘要： A radio that includes a transceiver to transmit and receive RF signals. The transceiver including a transmitter, a transformer, and a receiver, the transformer is coupled to and shared between the transmitter and the receiver. A resonator is formed by the combination of the transformer and capacitive elements of the transmitter and receiver.
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公开(公告)号：US20160020743A1
公开(公告)日：2016-01-21
申请号：US14869643
申请日：2015-09-29
CPC分类号： H03G3/3042 , H03F1/02 , H03F3/24 , H04B1/04 , H04B1/0458 , H04B1/10 , H04B1/44 , H04B2001/0408 , H04B2001/045
摘要： A radio that includes a transceiver to transmit and receive RF signals. The transceiver including a transmitter, a transformer, and a receiver, the transformer is coupled to and shared between the transmitter and the receiver. A resonator is formed by the combination of the transformer and capacitive elements of the transmitter and receiver.
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