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：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.