公开(公告)号：US20240022221A1

公开(公告)日：2024-01-18

申请号：US18319227

申请日：2023-05-17

Applicant: QUALCOMM Incorporated

Inventor： Zaid ABOUSH ,  Noshir Behli DUBASH ,  Abhijeet PAUL ,  Peter Graeme CLARKE

IPC: H03F3/24 ,  H03F1/22 ,  H03F1/02

CPC classification number: H03F3/245 ,  H03F1/223 ,  H03F1/0277 ,  H03F2200/451 ,  H03F2200/294

Abstract: Devices and techniques for amplifying a signal are disclosed. For instance, an amplifier includes an input node and an output node; a first gain segment including: a first transistor, where a gate of the first transistor is coupled to the input node, a first terminal of the first transistor is coupled to a ground, and a second terminal of the first transistor is coupled to the output node; a second gain segment including: a second transistor, where a gate of the second transistor is coupled to the input node, a first terminal of the second transistor is coupled to the ground, and a second terminal of the second transistor is coupled to the output node, where the first gain segment and the second gain segment are arranged in parallel with respect to the output node; and a bias circuit.

公开(公告)号：US20210336526A1

公开(公告)日：2021-10-28

申请号：US16855572

申请日：2020-04-22

Applicant: QUALCOMM Incorporated

Inventor： Seyyed Amir AYATI ,  Noshir DUBASH ,  Zaid ABOUSH

IPC: H02M1/12

Abstract: Certain aspects of the present disclosure provide apparatus and techniques for wireless communication implemented with harmonic cancellation. One example implementation includes a polar transmitter having at least one amplifier having an input configured to receive a phase-modulated signal to be amplified based on an amplitude-modulated signal, a harmonic cancellation circuit coupled to the input of the at least one amplifier, the harmonic cancellation circuit being configured to cancel at least one of an even harmonic or an odd harmonic of a transmission signal at an output of the polar transmitter, a controller having an output coupled to one or more control inputs of the harmonic cancellation circuit, and a feedback path between an output of the at least one amplifier and an input of the controller.