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公开(公告)号：US20230048770A1
公开(公告)日：2023-02-16
申请号：US17403595
申请日：2021-08-16
Applicant: QUALCOMM Incorporated
Inventor： Gary Lee BROWN, JR. , Chirag Dipak PATEL
Abstract: Aspects of the disclosure relate to a radio frequency phase shifter. An example includes an amplification stage to produce an amplified voltage, the amplification stage having a first amplifier with a first input coupled to a first output of a hybrid coupler and a second amplifier with a complementary second input coupled to a complementary second output of the hybrid coupler. A vector modulation stage coupled to the amplification stage receives the amplified voltage and produces a modulated vector, the vector modulation stage has an in-phase section and a quadrature section to control the phase of the modulated vector in response to a phase control signal. A varactor coupled across the first input and the second input of the amplification stage adjusts the capacitance between the first input and the second input in response to a capacitance control signal.
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公开(公告)号：US20250096459A1
公开(公告)日：2025-03-20
申请号：US18471052
申请日：2023-09-20
Applicant: QUALCOMM Incorporated
Inventor： Roberto RIMINI , Udara FERNANDO , Chinmaya MISHRA , Chirag Dipak PATEL , Ahmad Bassil ZOUBI
Abstract: Certain aspects provide a method for wireless communication by a device. The method generally includes: transmitting a transmit signal via a first antenna; receiving a first receive signal via a second antenna and a second receive signal via a third antenna, the first receive signal and the second receive signal being associated with the transmit signal; generating a first phase-shifted signal via a first phase shifter based on the first receive signal, and a second phase-shifted signal via a second phase shifter based on the second receive signal; and combining the first phase-shifted signal and the second phase-shifted signal to generate a combined receive signal, wherein a phase-shift setting of at least one of the first phase shifter or the second phase shifter is controlled based on at least one of a mutual coupling component or a phase noise of the combined receive signal.
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3.发明公开公开(公告)号：US20240106474A1
公开(公告)日：2024-03-28
申请号：US17934455
申请日：2022-09-22
Applicant: QUALCOMM Incorporated
Inventor： Gary Lee BROWN, Jr. , Chirag Dipak PATEL , Prakash THOPPAY EGAMBARAM
Abstract: Methods and apparatus for calibration of a second-order input intercept point (IIP2) of a mixer, such as a mixer in a wireless receive chain. One example circuit for mixer IIP2 calibration generally includes a first receive chain comprising a first mixer and a single tone generator having an output coupled to an input of the first mixer and configured to generate a calibration signal having a single baseband tone. One example method of mixer IIP2 calibration generally includes generating a calibration signal comprising a single baseband tone, applying the calibration signal to an input of a mixer, such that the mixer generates a differential tone at an output of the mixer, and adjusting the mixer to minimize a power of the differential tone at the output of the mixer.
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公开(公告)号：US20250096747A1
公开(公告)日：2025-03-20
申请号：US18470039
申请日：2023-09-19
Applicant: QUALCOMM INCORPORATED
Inventor： Laya MOHAMMADI , Chirag Dipak PATEL , Chuan WANG , Bhushan Shanti ASURI
Abstract: A phase shifter having an input matching network, a vector modulator connected to the input matching network, the vector modulator configured to alter an amplitude of signals provided by the input matching network, bias networks coupled to outputs of the vector modulator, and a combining circuit connected to the outputs of the vector modulator, the combining circuit configured to generate a first phase (θ1) signal from the outputs of the vector modulator.
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公开(公告)号：US20250093486A1
公开(公告)日：2025-03-20
申请号：US18471153
申请日：2023-09-20
Applicant: QUALCOMM Incorporated
Inventor： Chinmaya MISHRA , Chirag Dipak PATEL , Roberto RIMINI , Udara FERNANDO , Ahmad Bassil ZOUBI
IPC: G01S13/42 , G01S13/02 , G01S13/524
Abstract: Certain aspects provide a method for object detection. The method generally includes: transmitting, via a first antenna, a transmit signal generated via a first transmit chain, the transmit signal being generated based on a mixer output signal; receiving a first receive signal via a first receive chain coupled to a second antenna, the first receive signal being associated with the transmit signal; generating, via a first phase shifter, a first phase-shifted signal based on an adjustment signal received via a signal path coupled to the first transmit chain, the adjustment signal being generated based on the mixer output signal; combining the first phase-shifted signal and the first receive signal to generated a combined receive signal, wherein a phase-shift setting of the first phase shifter is controlled based on at least one of a mutual coupling component or a phase noise of the combined receive signal.
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Patent Agency Ranking
公开(公告)号：US20210067099A1
公开(公告)日：2021-03-04
申请号：US16557961
申请日：2019-08-30
Applicant: QUALCOMM Incorporated
Inventor： Lai Kan LEUNG , Xinmin YU , Chirag Dipak PATEL , Rajagopalan RANGARAJAN
Abstract: In certain aspects, a receiver includes first amplifiers, wherein each one of the first amplifiers comprises an input and an output. The receiver also includes second amplifiers, wherein each one of the second amplifiers comprises an input and an output, and the outputs of the second amplifiers are coupled to a combining node. The receiver also includes transmission lines, wherein each one of the transmission lines is coupled between the output of a respective one of the first amplifiers and the input of a respective one of the second amplifiers. The receiver further includes a load coupled to the combining node, and receiver elements, wherein each one of the receiver elements comprises an input and an output, and the output of each one of the receiver elements is coupled to the input of a respective one of the first amplifiers.
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7.发明申请公开(公告)号：US20180048293A1
公开(公告)日：2018-02-15
申请号：US15352402
申请日：2016-11-15
Applicant: QUALCOMM Incorporated
Inventor： Timothy Donald GATHMAN , Ojas CHOKSI , Aleksandar Miodrag TASIC , Sasha VUJCIC , Chirag Dipak PATEL , Wu-Hsin CHEN , Klaas VAN ZALINGE
CPC classification number: H03H11/0427 , H03F3/19 , H03F2200/294 , H03F2200/451 , H03H11/126 , H03H2011/0483 , H03H2011/0488 , H04B1/0053 , H04B1/1036 , H04L5/0041 , H04W88/08
Abstract: A reconfigurable filter circuit has a first path including a transimpedance amplifier (TIA). The transimpedance amplifier has an input that receives an input current and an output that outputs a voltage. The reconfigurable filter circuit also includes a switchable feedback path. The switchable feedback path includes a first low-pass filter coupled to an output of the TIA. The switchable feedback path also includes a first switch to couple the feedback path to provide a feedback current to the first path resulting in a bandpass response in the output voltage when the switch is closed and a low-pass response in the output voltage when the switch is open.
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公开(公告)号：US20250096752A1
公开(公告)日：2025-03-20
申请号：US18470091
申请日：2023-09-19
Applicant: QUALCOMM INCORPORATED
Inventor： Chirag Dipak PATEL , Chinmaya MISHRA , Cheng TAO , Muhammad HASSAN
Abstract: A radio frequency integrated circuit (RFIC), including a power amplifier (PA) connected to an antenna through a first electromagnetic (EM) element, the PA configured to receive a transmit signal from a second EM element, a low noise amplifier (LNA) connected to the first EM element and the second EM element, the power amplifier and the LNA comprising separate amplifier cores, and wherein the first EM element comprises a first plurality of interwound windings occupying a first common area and the second EM element comprises a second plurality of interwound windings occupying a second common area.
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公开(公告)号：US20250038752A1
公开(公告)日：2025-01-30
申请号：US18783547
申请日：2024-07-25
Applicant: QUALCOMM Incorporated
Inventor： Jang Joon LEE , Aleksandar Miodrag TASIC , Prakash THOPPAY EGAMBARAM , Kyle David HOLLAND , Chih-Fan LIAO , Tomas O'SULLIVAN , Dhon-Gue LEE , Dongling PAN , Chirag Dipak PATEL , Yangchuan CHEN
Abstract: Certain aspects of the present disclosure are directed towards apparatus and techniques for receiver calibration. An example apparatus generally includes: a first receiver having a first oscillating signal generation circuit, an output of the first oscillating signal generation circuit being coupled to an input of a first splitter, wherein the first splitter has multiple outputs; a second receiver having a second oscillating signal generation circuit coupled to an LO input of each of a first plurality of mixers of the second receiver; and signal paths between the multiple outputs of the first splitter and signal inputs of the first plurality of mixers, respectively.
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公开(公告)号：US20240429906A1
公开(公告)日：2024-12-26
申请号：US18340239
申请日：2023-06-23
Applicant: QUALCOMM Incorporated
Inventor： Abdellatif BELLAOUAR , Chirag Dipak PATEL , Kevin Hsi-Huai WANG , Rajagopalan RANGARAJAN , Gurkanwal Singh SAHOTA , Arul BALASUBRAMANIYAN
Abstract: A phase shifter for a millimeter wave (mmW) communication system including an in phase variable gain amplifier (I VGA) and a quadrature VGA (Q VGA) configured to receive radio frequency (RF) signals, the I VGA and the Q VGA configured to provide a selectable output to primary sides of first and second electromagnetic (EM) elements, respectively, the first EM element configured to provide a single-ended I output and the second EM element configured to provide a single-ended Q output, and a hybrid quadrature generator (HQG) configured to receive the single-ended I output of the first EM element and the single-ended Q output of the second EM element, the HQG configured to provide a combined signal at a desired phase.
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