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公开(公告)号：US20210048508A1
公开(公告)日：2021-02-18
申请号：US16538498
申请日：2019-08-12
Applicant: GM Global Technology Operations LLC
Inventor： Mehran Mokhtari , Ara Kurdoghlian , Jongchan Kang , Daniel Kuzmenko , Emilio A. Sovero , Robert G. Nagele , Hasan Sharifi , Igal Bilik
Abstract: A radar system includes a transmit section to emit a transmit signal. A chip-based front-end portion of the transmit section increases a frequency of an input signal to produce an intermediate signal and amplifies signal strength of the intermediate signal to produce the transmit signal. The frequency of the input signal is in a range of 76 gigahertz (GHz) to 80 GHz. The radar system also includes a receive section to receive a reflected signal resulting from reflection of the transmit signal by an object.
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公开(公告)号：US10404293B2
公开(公告)日：2019-09-03
申请号：US15646409
申请日：2017-07-11
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Timothy J. Talty , Cynthia D. Baringer , Mohiuddin Ahmed , Jongchan Kang , Yen-Cheng Kuan , James Chingwei Li , Emilio A. Sovero
IPC: H04B1/10 , H04B1/00 , H04L27/26 , H04B7/0413 , H04W84/12
Abstract: A method and apparatus for dynamically modifying filter characteristics of a Delta-Sigma modulator to accommodate for Doppler shift. A transceiver in a wireless cellular communication system for adapt to changes in the RF carrier frequency for maintaining signal integrity by applying a pilot tone in calibration to determine a frequency shift response for a bandpass filter. During operation, the system is operative to determine a Doppler shift and to shift the bandpass filter in response.
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公开(公告)号：US10158344B2
公开(公告)日：2018-12-18
申请号：US15406338
申请日：2017-01-13
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Emilio A. Sovero , Jongchan Kang , Mohiuddin Ahmed , James Chingwei Li , Cynthia D. Baringer , Yen-Cheng Kuan , Timothy J. Talty
Abstract: A single-chip tunable bandpass filter is provided having a bandpass filter circuit with all tuning components for the bandpass filter circuit formed on the single-chip to provide a programmed center frequency for the tunable bandpass filter. The bandpass filter circuit may include, but is not limited to, a plurality of serially coupled singe stage biquad filter circuits coupled to an input formed on the single-chip and configured to provide a bandpass filtered output signal to an output formed on the single-chip. The bandpass filtered output may be provided by an output buffer formed on the single-chip. The single-chip includes at least one tuning input to receive data for tuning stored in a data register formed on the single-chip. The data register provides control bits to the tuning components that include a programmable resistor responsive to the control bits to vary the programmable resistor to adjust programmed center frequency.
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公开(公告)号：US09912348B1
公开(公告)日：2018-03-06
申请号：US15378689
申请日：2016-12-14
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Cynthia D. Baringer , Mohiuddin Ahmed , Jongchan Kang , Yen-Cheng Kuan , James Chingwei Li , Emilio A. Sovero , Timothy J. Talty
CPC classification number: H03M3/458 , G05D1/0088 , H03M3/396 , H03M3/398 , H03M3/424 , H03M3/46 , H04B1/0014 , H04B1/0017 , H04B1/0078 , H04L27/0008 , H04W84/12 , H04W88/06
Abstract: A wide bandwidth radio system designed to adapt to various global radio standards and, more particularly, to a radio receiver composed of a demodulator operative to work in a delta sigma mode and a Nyquist mode, and wherein a filter and feedback loop may utilized in response to the modulation mode of an RF signal.
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公开(公告)号：US09722647B2
公开(公告)日：2017-08-01
申请号：US15433991
申请日：2017-02-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Timothy J. Talty , Mohiuddin Ahmed , Cynthia D. Baringer , Yen-Cheng Kuan , James Chingwei Li , Hsuanyu Pan , Emilio A. Sovero
CPC classification number: H04B1/0475 , H03F3/24 , H03M1/0673 , H03M1/365 , H03M1/662 , H03M3/408 , H03M3/424 , H04B1/0007 , H04B1/1036 , H04B1/3822 , H04B1/40 , H04B2001/0408 , H04B2001/0425 , H04B2001/1063 , H04L1/0071
Abstract: A cellular radio architecture that includes a transceiver front-end circuit including an antenna and a switch module having a switching network that directs analog transmit signals to be transmitted to the antenna and receives receive signals from the antenna. The architecture further includes a receiver module having a separate signal channel for each of the signal paths in the multiplexer module, where each signal channel in the receiver module includes a receiver delta-sigma modulator that converts analog receive signals to a representative digital signal. The architecture also includes a transmitter module having a transmitter delta-sigma modulator for converting digital data bits to the transmit signals. The transmitter module includes a tunable bandpass filter and a power amplifier for amplifying the transmit signals before transmitting. The architecture also includes a calibration feedback and switch module that receives the amplified signals from the power amplifier.
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Patent Agency Ranking
6.发明授权公开(公告)号：US09698855B1
公开(公告)日：2017-07-04
申请号：US15433928
申请日：2017-02-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Timothy J. Talty , Cynthia D. Baringer , Mohiuddin Ahmed , James Chingwei Li , Yen-Cheng Kuan , Hsuanyu Pan , Emilio A. Sovero
IPC: H04B1/40 , H04B1/3822
CPC classification number: H04B1/0475 , H03F3/24 , H03M1/0673 , H03M1/365 , H03M1/662 , H03M3/408 , H03M3/424 , H04B1/0007 , H04B1/1036 , H04B1/3822 , H04B1/40 , H04B2001/0408 , H04B2001/0425 , H04B2001/1063 , H04L1/0071
Abstract: A cellular radio architecture that includes a receiver module having a delta-sigma modulator that includes a plurality of gm cells configured in stages, where each stage includes at least two gm cells and an LC filter circuit. The gm cells in each stage can be controlled to be active or inactive to convert, for example, the modulator from a fourth order modulator to a second order modulator to reduce power dissipation. Further, the gm cells can be controlled to optimize a dynamic range of the modulator and to redirect current from inactive cells to active cells in order to optimize power consumption.
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公开(公告)号：US11221395B2
公开(公告)日：2022-01-11
申请号：US16538498
申请日：2019-08-12
Applicant: GM Global Technology Operations LLC
Inventor： Mehran Mokhtari , Ara Kurdoghlian , Jongchan Kang , Daniel Kuzmenko , Emilio A. Sovero , Robert G. Nagele , Hasan Sharifi , Igal Bilik
IPC: G01S7/03 , G01S13/931 , H01P5/18 , H01P1/202
Abstract: A radar system includes a transmit section to emit a transmit signal. A chip-based front-end portion of the transmit section increases a frequency of an input signal to produce an intermediate signal and amplifies signal strength of the intermediate signal to produce the transmit signal. The frequency of the input signal is in a range of 76 gigahertz (GHz) to 80 GHz. The radar system also includes a receive section to receive a reflected signal resulting from reflection of the transmit signal by an object.
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公开(公告)号：US10211855B2
公开(公告)日：2019-02-19
申请号：US15407679
申请日：2017-01-17
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Cynthia D. Baringer , Mohiuddin Ahmed , Hsuanyu Pan , Yen-Cheng Kuan , James Chingwei Li , Emilio A. Sovero , Timothy J. Talty
Abstract: A apparatus for dynamically modifying filter characteristics of a delta-sigma modulator in order to receive and transmit radio frequency signals over a wide frequency range. The system is used for wide bandwidth radio system designed to adapt to various global radio standards and, more particularly, to a cellular radio architecture that employs a combination of a single circulator, programmable band-pass sampling radio frequency (RF) front-end and optimized digital baseband that is capable of supporting all current cellular wireless access protocol frequency bands.
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公开(公告)号：US20180102793A1
公开(公告)日：2018-04-12
申请号：US15286825
申请日：2016-10-06
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Timothy J. Talty , Mohiuddin Ahmed , Cynthia D. Baringer , Jongchan Kang , Yen-Cheng Kuan , James Chingwei Li , Emilio A. Sovero
CPC classification number: H04B1/0003 , H04B1/0032 , H04B1/0035 , H04B1/0039 , H04W84/12 , H04W88/06
Abstract: A method and apparatus for dynamically modifying filter characteristics of a Delta-Sigma modulator. The system is used for wide bandwidth radio system designed to adapt to various global radio standards and, more particularly, to a cellular radio architecture that employs a combination of a single circulator, programmable band-pass sampling radio frequency (RF) front-end and optimized digital baseband that is capable of supporting all current cellular wireless access protocol frequency bands.
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10.发明授权公开(公告)号：US09755677B2
公开(公告)日：2017-09-05
申请号：US15434000
申请日：2017-02-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Timothy J. Talty , Yen-Cheng Kuan , Cynthia D. Baringer , Mohiuddin Ahmed , James Chingwei Li , Hsuanyu Pan , Emilio A. Sovero
IPC: H04B1/16 , H04B1/10 , H04B1/3822
CPC classification number: H04B1/0475 , H03F3/24 , H03M1/0673 , H03M1/365 , H03M1/662 , H03M3/408 , H03M3/424 , H04B1/0007 , H04B1/1036 , H04B1/3822 , H04B1/40 , H04B2001/0408 , H04B2001/0425 , H04B2001/1063 , H04L1/0071
Abstract: A cellular radio architecture that includes a receiver module having a delta-sigma modulator that converts analog signals to digital signals and a Fast-Fourier transform (FFT) circuit that converts the digital signals to frequency spectrum signals. The architecture also includes a moving average circuit that smoothes out the frequency spectrum signals by applying a moving average to the signals. The architecture further includes a differentiator circuit that differentiates the frequency spectrum signals to make the signals linear, and a minimum finding circuit that converts the differentiated frequency spectrum signals into positive values for frequencies above a notch frequency in the differentiated signals and negative values for frequencies below the notch frequency in the differentiated signals. A transition between the positive and negative values is compared to a desired notch frequency value, and if the difference is greater than a predetermined threshold, an adaptive control circuit calibrates the modulator.
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