公开(公告)号：US10693231B2

公开(公告)日：2020-06-23

申请号：US15997575

申请日：2018-06-04

Applicant: QUALCOMM Incorporated

Inventor： Jeremy Dunworth ,  Aliakbar Homayoun ,  Andrzej Partyka

IPC: H01Q5/335 ,  H04B1/44 ,  H03F1/02 ,  H03F1/56 ,  H03F3/21 ,  H03F3/68 ,  H03G1/00 ,  H04B1/525 ,  H03H7/48 ,  H01Q1/22 ,  H01Q21/28 ,  H01Q21/30 ,  H01Q1/24 ,  H01Q21/06 ,  H04B1/00

Abstract: A transmit/receive switching circuit implementation reduces transmitting/receiving switching losses in a transceiver during different modes of operation. The implementation includes connecting a low noise amplifier and a power amplifier in accordance with a shunt configuration in the transceiver. The implementation also includes disabling the power amplifier to achieve a high impedance state by grounding an output stage bias and enabling the low noise amplifier and disabling one or more transistors connected to a path between the low noise amplifier and the power amplifier during a receive mode.

公开(公告)号：US10756772B1

公开(公告)日：2020-08-25

申请号：US16418734

申请日：2019-05-21

Applicant: Qualcomm Incorporated

Inventor： Chirag Dipak Patel ,  Jeremy Goldblatt ,  Yunfei Feng ,  Li Liu ,  Xinmin Yu ,  Aliakbar Homayoun

IPC: H04B1/26 ,  H04B1/30 ,  H04B1/16

Abstract: An apparatus is disclosed for mixing signals with a multi-mode mixer for frequency translation. In example implementations, a multi-mode mixer includes a supply voltage node, a ground node, a first data signal coupler, and a second data signal coupler. The multi-mode mixer also includes a mixer core and a current control switch. The mixer core is coupled between the first data signal coupler and the second data signal coupler. The current control switch is configured to selectively enable or disable flow of a current through the mixer core. The first data signal coupler, the second data signal coupler, the mixer core, and the current control switch are coupled together in series between the supply voltage node and the ground node.