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

IPC: G06N20/00 ,  G06N7/02 ,  G06F40/30 ,  G06N5/02

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.

公开(公告)号：US20220190950A1

公开(公告)日：2022-06-16

申请号：US17124368

申请日：2020-12-16

Applicant: QUALCOMM Incorporated

Inventor： Lai Kan LEUNG ,  Aleksandar Miodrag TASIC ,  Francesco GATTA ,  Chiewcharn NARATHONG ,  Kyle David HOLLAND

IPC: H04K3/00 ,  H03F3/19 ,  H03M1/12

Abstract: The disclosure relates to an apparatus including a receiver configured to process a radio frequency (RF) signal to generate a baseband signal; a radio frequency (RF) jammer detector configured to generate a signal indicative of whether an RF jammer is present at an input of the receiver; and a receiver bias circuit configured to generate a supply voltage for the receiver based on the RF jammer indication signal. In another aspect, the apparatus includes constant gain bias circuit to maintain the gain of the receiver constant in response to changes in the supply voltage. In other aspects, the receiver bias circuit may suspend the generating of the supply voltage based on the RF jammer indication signal if the power level of the target received signal is above a threshold. In other aspects, the receiver bias circuit changes the supply voltage during cyclic prefix (CP) intervals between downlink intervals.

公开(公告)号：US20210367576A1

公开(公告)日：2021-11-25

申请号：US17322647

申请日：2021-05-17

Applicant: QUALCOMM INCORPORATED

Inventor： Lai Kan LEUNG ,  Aleksandar Miodrag TASIC ,  Chiewcharn NARATHONG

IPC: H03H7/01 ,  H04L25/03 ,  H03F3/189

Abstract: A programmable filter includes a first programmable filter instance comprising a first adjustable active inductance capacitively coupled to a signal receive path, the capacitive coupling comprising at least one adjustable capacitance, the adjustable active inductance and the at least one adjustable capacitance configurable to provide a filter response at a first selected frequency, and a second programmable filter instance comprising a second adjustable active inductance capacitively coupled to the signal receive path, the capacitive coupling comprising at least one adjustable capacitance, the second adjustable active inductance and the at least one adjustable capacitance configurable to provide a filter response at a second selected frequency.

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

IPC: H03F1/02 ,  H03F1/32 ,  H03F3/45 ,  G05F1/56 ,  G05F3/26

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.

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

IPC: H03H11/04 ,  H04B1/40 ,  H03D7/14

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.