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公开(公告)号：US20210104981A1
公开(公告)日：2021-04-08
申请号：US16592839
申请日：2019-10-04
Applicant: QUALCOMM Incorporated
Inventor： Gary Lee BROWN, JR. , Aleksandar Miodrag TASIC , Chirag Dipak PATEL
Abstract: A radio frequency (RF) front-end receiver having a passive mixer with feed-forward intermodulation distortion cancellation, or at least reduction. An example receiver generally includes a mixer having differential input terminals and differential output terminals and a baseband filter having inputs coupled to the differential output terminals of the mixer. The receiver also includes common-mode sensing circuitry coupled to the differential input terminals of the mixer and configured to sense a common-mode signal of a first differential signal present at the differential input terminals of the mixer. The receiver further includes a conversion circuit coupled to the common-mode sensing circuitry and configured to convert the common-mode signal to a second differential signal presented to the differential output terminals of the mixer and the inputs of the baseband filter.
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公开(公告)号：US20190097608A1
公开(公告)日：2019-03-28
申请号：US15712406
申请日：2017-09-22
Applicant: QUALCOMM Incorporated
Inventor： Timothy Donald GATHMAN , Lai Kan LEUNG , Chirag Dipak PATEL , Rajagopalan RANGARAJAN
CPC classification number: H03H11/08 , H03H11/0444 , H03H11/342 , H03H11/42 , H03H2011/0494 , H04B1/48 , H04B5/0012 , H04B5/0075
Abstract: Certain aspects of the present disclosure relate to multi-band filter architectures and methods for filtering signals using the multi-band filter architectures. One example multi-band filter generally includes a transconductance-capacitance (gm-C) filter and a reconfigurable load impedance coupled to an output of the gm-C filter, the reconfigurable load impedance comprising a first gyrator circuit coupled to a second gyrator circuit.
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公开(公告)号：US20180205413A1
公开(公告)日：2018-07-19
申请号：US15872695
申请日：2018-01-16
Applicant: QUALCOMM Incorporated
Inventor： Chirag Dipak PATEL , Lai Kan LEUNG , Zhang JIN , Chinmaya MISHRA , Ravi SRIDHARA , Youngchang YOON
Abstract: Various aspects described herein relate to low-loss multi-band multiplexing schemes for a wireless communications system, for example, a 5th Generation (5G) New Radio (NR) system. In an aspect, a multiplexer for multi-band wireless communications comprises at least one tuning component configured to transmit or receive at least one signal within a frequency band that is selected from a plurality of frequency bands. The multiplexer further comprises at least one combining component, communicatively coupled with the at least one tuning component, configured to transmit or receive the at least one signal within the selected frequency band. In an aspect, the at least one tuning component is integrated on a chip and the at least one combining component is not integrated on the chip.
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公开(公告)号：US20240214016A1
公开(公告)日：2024-06-27
申请号：US18145009
申请日：2022-12-21
Applicant: QUALCOMM Incorporated
Inventor： Chirag Dipak PATEL , Gary Lee BROWN, JR. , Rajagopalan RANGARAJAN , Mustafa KESKIN
Abstract: Aspects of the disclosure relate to devices, wireless communication apparatuses, methods, and other aspects of spur suppression in millimeter wave receivers. In one aspect a local oscillator (LO) source is coupled to a quadrature generation circuit having a first output for a first LO signal, and a second output for a second LO signal 90 degrees out of phase with the first LO signal. Each output is coupled to an LO driver, and outputs of the LO drivers a coupled at a first power connection to provide spur suppression associated with a phase difference between the first LO signal and the second LO signal. Similar connections are provided at outputs of first and second mixers for spur suppression.
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Patent Agency Ranking
公开(公告)号：US20220207428A1
公开(公告)日：2022-06-30
申请号：US17698700
申请日：2022-03-18
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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公开(公告)号：US20210105047A1
公开(公告)日：2021-04-08
申请号：US16595987
申请日：2019-10-08
Applicant: QUALCOMM Incorporated
Inventor： Chinmaya MISHRA , Marco VIGILANTE , Chirag Dipak PATEL , Bhushan Shanti ASURI , Rajagopalan RANGARAJAN
IPC: H04B7/0452 , H04B1/44 , H03F3/217 , H03F3/45
Abstract: A transformer-based antenna switching network includes a transformer having a secondary winding that extends between a first terminal and a second terminal. The first terminal couples to ground through a first switch and connects to a first antenna. The second terminal couples to ground through a second switch and connects to a second antenna.
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公开(公告)号：US20190296692A1
公开(公告)日：2019-09-26
申请号：US16054921
申请日：2018-08-03
Applicant: QUALCOMM Incorporated
Inventor： Chirag Dipak PATEL , Lai Kan LEUNG , Xinmin YU , Timothy Donald GATHMAN
Abstract: A switchable amplifier exhibits multiple modes of operation including a current mode and a voltage mode. The switchable amplifier includes a first transistor having a gate terminal coupled to a drain terminal, one or more second transistors having a gate terminal coupled to the gate terminal of the first transistor, a third transistor and a bias resistor across the third transistor. The third transistor is coupled between the gate terminal of the first transistor and the gate terminal of the one or more second transistors.
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公开(公告)号：US20190238117A1
公开(公告)日：2019-08-01
申请号：US16256733
申请日：2019-01-24
Applicant: QUALCOMM Incorporated
Inventor： Xinmin YU , Lai Kan LEUNG , Yunfei FENG , Chirag Dipak PATEL
Abstract: The present disclosure provides an apparatus that includes a first mixer circuit configured to convert between an RF signal and an IF signal based at least in part on an local oscillator (LO) signal. The first mixer circuit is electrically coupled to a first node that is configured to receive the LO signal and a first bias voltage, a second node that is configured to receive the RF signal or the IF signal, and a third node that is configured to provide the IF signal or the RF signal. The apparatus further includes a second mixer circuit electrically coupled to a fourth node configured to receive the LO signal and a second bias voltage, the second node, and the third node. The second bias voltage has a voltage level that is offset from the first bias voltage.
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公开(公告)号：US20180048271A1
公开(公告)日：2018-02-15
申请号：US15287674
申请日：2016-10-06
Applicant: QUALCOMM Incorporated
Inventor： Chirag Dipak PATEL , Sasha VUJCIC , Aleksandar Miodrag TASIC , Timothy GATHMAN , Wu-Hsin CHEN , Klaas VAN ZALINGE
CPC classification number: H03F3/19 , H03F1/086 , H03F1/26 , H03F3/195 , H03F3/3022 , H03F3/68 , H03F2200/111 , H03F2200/168 , H03F2200/264 , H03F2200/294 , H03F2200/372 , H03F2200/39 , H03F2200/429 , H03F2200/451 , H03F2200/61 , H03F2200/75 , H03H7/06 , H03H11/04 , H04W88/02
Abstract: A multi-stage low-noise amplifier (LNA) device with a band pass response includes a first LNA in series with a second LNA. The device further includes multiple outputs coupled to the second LNA. Each of the outputs is capable of being active at the same time. The device further includes a high pass filter coupled between the first LNA and the second LNA.
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