公开(公告)号：US12176939B2

公开(公告)日：2024-12-24

申请号：US17324378

申请日：2021-05-19

Applicant: QUALCOMM INCORPORATED

Inventor： Jinbo Li ,  Sean Joel Lyn ,  Ara Bicakci

IPC: H04B1/40 ,  H04B1/04 ,  H04B1/26 ,  H04L5/14 ,  H04L25/02 ,  H04Q11/04

Abstract: A transceiver circuit includes transmit circuitry comprising a transmit baseband filter and a driver amplifier having an output coupled to a power amplifier, receive circuitry comprising a low noise amplifier and a receive baseband filter, mixer circuitry and a magnetic circuit, wherein the mixer circuitry and the magnetic circuit are coupled between the transmit baseband filter and the driver amplifier, and are further coupled between the low noise amplifier and the receive baseband filter, wherein the mixer circuitry and the magnetic circuit are shared between the transmit circuitry and the receive circuitry in a time division duplexing (TDD) communication system.

公开(公告)号：US20210258023A1

公开(公告)日：2021-08-19

申请号：US17179264

申请日：2021-02-18

Applicant: Qualcomm Incorporated

Inventor： Sean Joel Lyn ,  Cheng-Han Wang ,  Hye Jin Song ,  Sang-Oh Lee

IPC: H04B1/00 ,  H04B1/04

Abstract: Apparatuses and methods are disclosed regarding a multiband transmitter. In an example aspect, an apparatus for processing signals for wireless transmission includes a wireless interface device. The wireless interface device includes an upconverter, a tunable filter, and a driver amplifier. The upconverter has an output and is configured to upconvert a baseband frequency to a radio frequency based on a local oscillator signal. The tunable filter has an input and an output; the input of the tunable filter is coupled to the output of the upconverter. The driver amplifier has an input; the input of the driver amplifier is coupled to the output of the tunable filter.

公开(公告)号：US11616517B2

公开(公告)日：2023-03-28

申请号：US17179264

申请日：2021-02-18

Applicant: Qualcomm Incorporated

Inventor： Sean Joel Lyn ,  Cheng-Han Wang ,  Hye Jin Song ,  Sang-Oh Lee

IPC: H04B1/00 ,  H04B1/04

Abstract: Apparatuses and methods are disclosed regarding a multiband transmitter. In an example aspect, an apparatus for processing signals for wireless transmission includes a wireless interface device. The wireless interface device includes an upconverter, a tunable filter, and a driver amplifier. The upconverter has an output and is configured to upconvert a baseband frequency to a radio frequency based on a local oscillator signal. The tunable filter has an input and an output; the input of the tunable filter is coupled to the output of the upconverter. The driver amplifier has an input; the input of the driver amplifier is coupled to the output of the tunable filter.

公开(公告)号：US11600916B2

公开(公告)日：2023-03-07

申请号：US17164494

申请日：2021-02-01

Applicant: QUALCOMM Incorporated

Inventor： Sean Joel Lyn ,  Cheng-Han Wang ,  Hye Jin Song ,  Hai Huang ,  Sang-Oh Lee

IPC: H01Q7/00 ,  H01P5/10 ,  H01Q1/50

Abstract: An area-efficient balun and a method for signal processing using such a balun. One example balun generally includes a winding and a clamping circuit. The winding is formed by a coiled trace including a first portion having a first trace width and a second portion having a second trace width, the second trace width being narrower than the first trace width. The clamping circuit has a first terminal and a second terminal, the first terminal of the clamping circuit being coupled to the first portion of the coiled trace.

公开(公告)号：US10411652B2

公开(公告)日：2019-09-10

申请号：US15909840

申请日：2018-03-01

Applicant: QUALCOMM Incorporated

Inventor： Yu-Ching Yeh ,  Sean Joel Lyn ,  Cheng-Han Wang ,  Roger Brockenbrough

IPC: H03F3/45 ,  H03F1/02 ,  H03F3/24 ,  H03F3/195 ,  H03F3/193

Abstract: An amplifier may include a first transistor. The amplifier may also include a second transistor coupled to the first transistor in an output stage of the amplifier. The amplifier may also include a level shift resistor coupled between a gate of the first transistor and a gate of the second transistor. The amplifier may further include a feedback bias circuit coupled to the gate of the first transistor and the gate of the second transistor through the level shift resistor. The feedback bias circuit may be configured to sense a common mode voltage of the output stage of the amplifier, and to compare the common mode voltage with a reference voltage to control a resistor bias current conducted by the level shift resistor.