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公开(公告)号：US11533075B1
公开(公告)日：2022-12-20
申请号：US17478163
申请日：2021-09-17
Applicant: QUALCOMM Incorporated
Inventor： Xinmin Yu , Bon-Hyun Ku , Yunfei Feng , Chuan Wang
Abstract: An apparatus includes a transformer including a first inductor, a second inductor, and a third inductor. The apparatus also includes a power amplifier having an output coupled to the first inductor, a low-noise amplifier having an input coupled to a first terminal of the third inductor, and a fourth inductor having a first terminal and a second terminal, wherein the second terminal of the fourth inductor is coupled to a second terminal of the third inductor. The apparatus also includes a switch coupled between the first terminal of the third inductor and the first terminal of the fourth inductor.
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公开(公告)号：US11283409B2
公开(公告)日：2022-03-22
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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公开(公告)号：US20200076387A1
公开(公告)日：2020-03-05
申请号：US16115475
申请日：2018-08-28
Applicant: Qualcomm Incorporated
Inventor： Timothy Donald Gathman , Chirag Dipak Patel , Lai Kan Leung , Xinmin Yu
Abstract: An apparatus is disclosed for complementary variable gain amplification. In an example aspect, the apparatus includes a variable gain amplifier that includes multiple amplifiers. The multiple amplifiers include at least one first amplifier and at least one second amplifier cascaded together in series. The first amplifier includes a first set of transistors having a first doping type. At least a portion of the first set of transistors is configured to implement a first current mirror. The second amplifier includes a second set of transistors having a second doping type. At least a portion of the second set of transistors is configured to implement a second current mirror. The second current mirror is coupled to the first current mirror.
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公开(公告)号：US10153934B1
公开(公告)日：2018-12-11
申请号：US15730040
申请日：2017-10-11
Applicant: QUALCOMM Incorporated
Inventor： Timothy Donald Gathman , Chirag Dipak Patel , Lai Kan Leung , Xinmin Yu , Rajagopalan Rangarajan
Abstract: In certain aspects, a circuit comprises a low noise amplifier (LNA) configured to receive a radio frequency (RF) signal, a first mixer coupled to the low noise amplifier (LNA), and a first trans-impedance filter coupled to the first mixer. The first trans-impedance filter comprises a tunable inductor and capacitor (LC) network configured to be a portion of a doubly terminated LC ladder filter and a trans-impedance amplifier (TIA) coupled to the tunable inductor and capacitor (LC) network. The circuit further comprises a second mixer coupled to the low noise amplifier (LNA) and a second trans-impedance filter coupled to the second mixer.
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公开(公告)号：US20180278277A1
公开(公告)日：2018-09-27
申请号：US15927022
申请日：2018-03-20
Applicant: QUALCOMM Incorporated
Inventor： Chirag Dipak Patel , Lai Kan Leung , Xinmin Yu , Timothy Donald Gathman , Ravi Sridhara
CPC classification number: H04B1/0067 , H03F1/223 , H03F1/42 , H03F1/565 , H03F3/193 , H03F3/245 , H03F3/72 , H03F2200/111 , H03F2200/451 , H03F2203/7209 , H04B1/005 , H04B1/719
Abstract: Devices and techniques are described to extract specific frequency band signals from a wide-band radio-frequency signal. A network entity may include an antenna for receiving the wide-band radio-frequency signal and may include a receiver circuit for processing the wide-band radio-frequency signal. The receiver circuit may include a transconductance amplifier and a plurality of single-band circuits. The transconductance amplifier may be configured to generate an amplified wide-band radio-frequency signal and send it to one or more of the single-band circuits. Each single-band circuit may be configured to extract a different frequency band signal from the amplified wide-band radio-frequency signal.
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Patent Agency Ranking
公开(公告)号：US11569555B2
公开(公告)日：2023-01-31
申请号：US16785440
申请日：2020-02-07
Applicant: Qualcomm Incorporated
Inventor： Chirag Dipak Patel , Xinmin Yu , Lai Kan Leung
Abstract: An apparatus is disclosed for phase-shifting signals. In example implementations, the apparatus includes a phase shifter. The phase shifter includes a first port, a second port, a vector modulator coupled to the first port, and a signal phase generator. The signal phase generator includes multiple amplifiers coupled between the vector modulator and the second port. The signal phase generator also includes multiple capacitors that couple the multiple amplifiers together to form a loop. Each respective capacitor of the multiple capacitors is coupled between a respective pair of consecutive amplifiers of the multiple amplifiers to form the loop.
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公开(公告)号：US20220311423A1
公开(公告)日：2022-09-29
申请号：US17211716
申请日：2021-03-24
Applicant: Qualcomm Incorporated
Inventor： Timothy Donald Gathman , Lai Kan Leung , Chirag Dipak Patel , Xinmin Yu , Rajagopalan Rangarajan
IPC: H03H11/22
Abstract: An example apparatus includes a polyphase transconductance-capacitor filter. The polyphase filter includes a DC bias voltage node, a plus in-phase filter unit, a minus in-phase filter unit, a plus quadrature-phase filter unit, and a minus quadrature-phase filter unit. Each filter unit respectively includes an input node, an output node, and a control node. The polyphase filter also includes a plus in-phase switch and a minus in-phase switch. The plus in-phase switch is coupled to the control node of the plus in-phase filter unit, the DC bias voltage node, and the input node of one or both of the plus quadrature-phase filter unit and the minus quadrature-phase filter unit. The minus in-phase switch is coupled to the control node of the minus in-phase filter unit, the DC bias voltage node, and the input node of one or both of the plus quadrature-phase filter unit and the minus quadrature-phase filter unit.
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公开(公告)号：US11316489B2
公开(公告)日：2022-04-26
申请号：US16557974
申请日：2019-08-30
Applicant: Qualcomm Incorporated
Inventor： Chirag Dipak Patel , Xinmin Yu , Lai Kan Leung
Abstract: An apparatus is disclosed for bidirectional variable gain amplification. In an example aspect, an apparatus comprises an antenna element of an antenna array and a wireless transceiver. The wireless transceiver comprises a transmit path coupled to the antenna element, a receive path coupled to the antenna element, and a phase shifter disposed in both the transmit path and the receive path. The phase shifter is configured to operate in an active mode and comprises a first bidirectional variable gain amplifier and a second bidirectional variable gain amplifier.
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公开(公告)号：US20210067118A1
公开(公告)日：2021-03-04
申请号：US16557974
申请日：2019-08-30
Applicant: Qualcomm Incorporated
Inventor： Chirag Dipak Patel , Xinmin Yu , Lai Kan Leung
Abstract: An apparatus is disclosed for bidirectional variable gain amplification. In an example aspect, an apparatus comprises an antenna element of an antenna array and a wireless transceiver. The wireless transceiver comprises a transmit path coupled to the antenna element, a receive path coupled to the antenna element, and a phase shifter disposed in both the transmit path and the receive path. The phase shifter is configured to operate in an active mode and comprises a first bidirectional variable gain amplifier and a second bidirectional variable gain amplifier.
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公开(公告)号：US10193497B2
公开(公告)日：2019-01-29
申请号：US15831370
申请日：2017-12-04
Applicant: QUALCOMM Incorporated
Inventor： Xinmin Yu , Timothy Donald Gathman , Lai Kan Leung
Abstract: Methods, systems, and devices for wireless communication are described for enhanced broadband operation of an active mixer. In an example, an apparatus may include an active mixer that converts between radio frequency (RF) signals and intermediate frequency (IF) signals based at least in part on an alternating current (AC) local oscillator (LO) signal, wherein a direct current (DC) current generated within the active mixer is dependent in part on a bias voltage and the AC LO signal. The apparatus may include a mixer biasing circuit that generates the bias voltage for the active mixer, a magnitude of the bias voltage having an inverse relationship to an amplitude of the AC LO signal.
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