公开(公告)号：US10797647B1

公开(公告)日：2020-10-06

申请号：US16531596

申请日：2019-08-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mehran Mokhtari ,  Jongchan Kang ,  Ara Kurdoghlian ,  Daniel Kuzmenko ,  Emilio A. Sovero ,  Robert G. Nagele ,  Hasan Sharifi ,  Igal Bilik

IPC: H04B1/28 ,  H03D7/14 ,  H04B1/10

Abstract: A receiver apparatus is provided. The apparatus includes a single field effect transistor mixer comprising a gate, a source and a drain, wherein one of the source or the drain is configured to receive a first signal from a first low noise amplifier at a receiving frequency and another of the source or the drain is configured to output a second signal at an intermediate frequency to a second low noise amplifier; and a local oscillator configured to apply a third signal to the gate.

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

IPC: G01S7/03 ,  H01P1/202 ,  H01P5/18 ,  G01S13/93

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.

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.

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.

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

IPC: H04B1/00 ,  H04W4/02

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.

公开(公告)号：US10110247B1

公开(公告)日：2018-10-23

申请号：US15846839

申请日：2017-12-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Cynthia D Baringer ,  Mohiuddin Ahmed ,  Jongchan Kang ,  James Chingwei Li ,  Emilio A Sovero ,  Timothy J Talty

IPC: H03M7/00 ,  H03M3/00 ,  H04B17/20 ,  H03M1/02 ,  H04B1/16 ,  H04B1/08

Abstract: A method and apparatus for temperature compensation for data converters in a software defined radio. Specifically, the system and method are teach monitoring the temperature of critical signal processing components such as band pass filters, ADCs and DACs and retrieving modulator coefficients in response to the temperatures and the like. The modulator coefficients are then used to compensate for temperature changes, performance changes and the like.

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

IPC: H03H11/12 ,  H03J3/18 ,  H03J3/20

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.

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

IPC: H04B1/14 ,  H03M3/00 ,  H04B1/00 ,  G05D1/00 ,  H04L27/00 ,  H04W88/06 ,  H04W84/12

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.