公开(公告)号：US20220416737A1

公开(公告)日：2022-12-29

申请号：US17356424

申请日：2021-06-23

Applicant: QUALCOMM Incorporated

Inventor： Jeremy GOLDBLATT ,  Arul BALASUBRAMANIYAN ,  Chinmaya MISHRA ,  Damin CAO ,  Bhushan Shanti ASURI

IPC: H03F3/24 ,  H03G3/30 ,  G01R19/04 ,  H03F1/02 ,  H03F3/195 ,  H04B1/04

Abstract: A peak detector for a power amplifier is provided that includes a threshold voltage detector configured to pulse a detection current in response to an amplified output signal from the amplifier exceeding a peak threshold. A plurality of such peak detectors may be integrated with a corresponding plurality of power amplifiers in a transmitter. Should any peak detector assert an alarm signal or more than a threshold number of alarm signals during a given period, a controller reduces a gain for the plurality of power amplifiers.

公开(公告)号：US20240106490A1

公开(公告)日：2024-03-28

申请号：US17950299

申请日：2022-09-22

Applicant: QUALCOMM INCORPORATED

Inventor： Chinmaya MISHRA ,  Abdellatif BELLAOUAR ,  Damin CAO ,  Rajagopalan RANGARAJAN ,  Kevin Hsi-Huai WANG

IPC: H04B1/44 ,  H03F3/24 ,  H04B1/00

CPC classification number: H04B1/44 ,  H03F3/245 ,  H04B1/0067 ,  H03F2200/165 ,  H03F2200/171 ,  H03F2200/294 ,  H03F2200/451

Abstract: A transmit (TX) local oscillator (LO) leakage calibration circuit including a transceiver having a transmit portion and a receive portion, an interface circuit connected to the transmit portion and the receive portion, an impedance control circuit connected to a low noise amplifier (LNA) in the receive portion, the impedance control circuit configured to adjust an input impedance for the LNA, a power detector coupled to an output of the LNA, and a local oscillator cancellation element connected to the power detector, the local oscillator cancellation element configured to adjust an input to the transmit portion based on TX LO leakage detected by the power detector.

公开(公告)号：US20240396578A1

公开(公告)日：2024-11-28

申请号：US18323286

申请日：2023-05-24

Applicant: QUALCOMM Incorporated

Inventor： Damin CAO ,  Shrenik PATEL ,  Igor GUTMAN ,  Carl HARDIN ,  Varadarajan KACHII KADAMBI ,  Siddharth KAMATH

IPC: H04B1/04 ,  H04B17/12 ,  H04L27/36

Abstract: Aspects described herein include devices and methods for facilitating digital predistortion calibration. One aspect includes selecting a first transmission element from a plurality of transmission elements associated with a first antenna element of a plurality of antenna elements in an antenna array of the millimeter wave communication device, wherein the first transmission element is selected based on a gain setting for the first transmission element, selecting a reference transmission power for a test transmission from the first transmission element as part of a path searching operation of the millimeter wave communication device, determining a selected receive element of the plurality of receive elements based on a near field power measurement of the reference transmission power from the first transmission element using the selected receive element and a set of selection criteria, and setting a digital predistortion calibration setting using the reference transmission power and the near field power measurement.

公开(公告)号：US20230086058A1

公开(公告)日：2023-03-23

申请号：US17483191

申请日：2021-09-23

Applicant: QUALCOMM INCORPORATED

Inventor： Chinmaya MISHRA ,  Nikhil Anand MUTHYA ,  Damin CAO ,  Shrenik PATEL

IPC: H04B1/40 ,  H04W52/36 ,  H03F3/24 ,  H03G3/30

Abstract: A system for power amplifier control includes a processor, a memory in communication with the processor, wherein the processor and the memory are configured to simultaneously provide input signal strength of each of a plurality of power amplifiers in a millimeter wave (mmW) phased array system, determine an average input signal strength of the plurality of power amplifiers based on the provided input signal strengths using an analog-to-digital converter (ADC), determine a voltage headroom for the plurality of power amplifiers based on the determined average input signal strength, estimate a power backoff value based on the voltage headroom, and determine a gain control value based on the estimated power backoff value.

公开(公告)号：US20220311460A1

公开(公告)日：2022-09-29

申请号：US17211769

申请日：2021-03-24

Applicant: QUALCOMM Incorporated

Inventor： Meysam AZIN ,  Li LU ,  Anees HABIB ,  Chinmaya MISHRA ,  Damin CAO ,  Arul BALASUBRAMANIYAN ,  David Ta-hsiang LIN ,  Shuang ZHU ,  Dinesh Jagannath ALLADI

IPC: H04B1/04 ,  H03M1/46 ,  H03M3/00

Abstract: Aspects of the disclosure relate to an apparatus for wireless communication. The apparatus may include a set of power detectors configured to generate a set of analog signals related to a set of output signal power levels of a set of transmit chains of a transmitter, respectively; an analog summer; a set of switching devices configured to send a selected one or more of the set of analog signals to the analog summer, and substantially isolated unselected one or more of the set of power detectors from the analog summer, wherein the analog summer is configured to generate a cumulative analog signal based on a sum of the selected one or more of the set of analog signals; an analog-to-digital converter (ADC) configured to generate a digital signal based on the cumulative analog signal; and a controller configured to control the set of switching devices.