公开(公告)号：US20240204753A1

公开(公告)日：2024-06-20

申请号：US18068837

申请日：2022-12-20

Applicant: QUALCOMM Incorporated

Inventor： Peter GAZZERRO ,  Nitz SAPUTRA ,  Ashok SWAMINATHAN ,  Osama ELHADIDY ,  Bo YANG

IPC: H03H11/04 ,  H03M1/06 ,  H03M1/66 ,  H04B1/04

CPC classification number: H03H11/0461 ,  H03M1/0626 ,  H03M1/66 ,  H04B1/04

Abstract: Methods and apparatus for filtering a signal using a current-mode filter circuit implementing source degeneration. An example filter circuit generally includes an input node; an output node; a power supply node; a first transistor comprising a drain coupled to the input node; a second transistor comprising a drain coupled to the output node and comprising a gate coupled to a gate of the first transistor; a capacitive element coupled between the drain of the first transistor and the power supply node; a first resistive element coupled between the drain and the gate of the first transistor; a first source degeneration element coupled between a source of the first transistor and the power supply node; and a second source degeneration element coupled between a source of the second transistor and the power supply node.

公开(公告)号：US20230253990A1

公开(公告)日：2023-08-10

申请号：US17669178

申请日：2022-02-10

Applicant: QUALCOMM Incorporated

Inventor： Rahul SINGH ,  Bo YANG

IPC: H04B1/00 ,  H04B1/10 ,  H03H7/46 ,  H03F3/19

CPC classification number: H04B1/006 ,  H04B1/0089 ,  H04B1/1036 ,  H03H7/465 ,  H03F3/19 ,  H03H2250/00

Abstract: An aspect of the disclosure relates to a receiver, including: a low noise amplifier (LNA); and an input stage coupled to the LNA, wherein the input stage is configured to provide a first passband for a first signal across at least a portion of a first frequency band and a notch to substantially reject a second signal within the first frequency band or a second frequency band in accordance with a first mode of operation, and a second passband for the second signal across the second frequency band in accordance with a second mode of operation. In the first mode, the input stage includes a parallel L-C resonance frequency and an L-match impedance matching circuit. In the second mode, the input stage includes a modified bridge T-coil impedance matching circuit with substantially no electromagnetic coupling between the inductors of the circuit.

公开(公告)号：US20190190452A1

公开(公告)日：2019-06-20

申请号：US16005458

申请日：2018-06-11

Applicant: QUALCOMM Incorporated

Inventor： Bo YANG

IPC: H03D7/14

CPC classification number: H03D7/1466 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/165 ,  H03D2200/006 ,  H03D2200/0074 ,  H03D2200/0088 ,  H04B1/38

Abstract: A passive mixer may include an output coupled to a next stage circuit. The output may be coupled to baseband inputs via first switches. The passive mixer may further include a tunable capacitor bank. The tunable capacitor bank may be coupled via second switches to the baseband inputs.

公开(公告)号：US20240106466A1

公开(公告)日：2024-03-28

申请号：US17934495

申请日：2022-09-22

Applicant: QUALCOMM Incorporated

Inventor： Lai Kan LEUNG ,  Bo YANG ,  Osama ELHADIDY ,  Chiewcharn NARATHONG

IPC: H04B1/00 ,  H04B1/04

CPC classification number: H04B1/0067 ,  H04B1/04

Abstract: Methods and apparatus for transmitting wireless signals using multiple transmit chains that share hardware components to reduce transmitter circuit area. One example transmitter circuit for wireless communications generally includes a first transmit chain and a second transmit chain. The first transmit chain and the second transmit chain share a digital-to-analog converter (DAC). For certain aspects, the first transmit chain and the second transmit chain may also share a frequency synthesizer and/or a baseband processor.