公开(公告)号：US09634697B2

公开(公告)日：2017-04-25

申请号：US14848569

申请日：2015-09-09

Applicant: QUALCOMM Incorporated

Inventor： Dineshbabu Natesan ,  Daniel Fred Filipovic ,  Ning He ,  Yi-Chyun Chiou ,  Tarandeep Virk

IPC: H04B1/04 ,  H04B1/40

CPC classification number: H04B1/0458 ,  H01Q1/245 ,  H01Q3/24 ,  H01Q21/28 ,  H04B1/40

Abstract: A systems, methods and apparatus including a plurality of antennas are provided. The antenna system includes a first antenna, a second antenna, and a measurement device. The measurement device is configured to measure at least a first complex value indicative of an impedance matching of the first antenna and a second complex value indicative of an impedance matching of the second antenna. The antenna system includes an antenna selection controller configured to select one of the first antenna and the second antenna. The antenna selection controller making the selection based on the measurement of the first complex value of the first antenna and the measurement of the second complex value of the second antenna.

公开(公告)号：US11438846B2

公开(公告)日：2022-09-06

申请号：US16544819

申请日：2019-08-19

Applicant: QUALCOMM Incorporated

Inventor： Wei Yang ,  Amir Aminzadeh Gohari ,  Yi Huang ,  Peter Gaal ,  Chao Jin ,  Amir Farajidana ,  Alexei Yurievitch Gorokhov ,  Rebecca Wen-ling Yuan ,  Vishal Mahajan ,  Tarandeep Virk ,  Christos Komninakis

IPC: H04W72/04 ,  H04W52/14 ,  H04W74/08 ,  H04B1/713 ,  H04L5/00

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for maintaining phase coherency in the event of changes to uplink transmit power. For example, the techniques described herein may help mitigate the impact on phase continuity of uplink transmissions by UEs capable of dual connectivity (DC).

公开(公告)号：US20170181166A1

公开(公告)日：2017-06-22

申请号：US14974077

申请日：2015-12-18

Applicant: QUALCOMM Incorporated

Inventor： Raghavendra Shyam Ananda ,  Niranjan Kumar Vadlamudi ,  Reza Shahidi ,  Anand Rajurkar ,  Tarandeep Virk

IPC: H04W72/04 ,  H04B1/10 ,  H04W72/08

CPC classification number: H04W72/0453 ,  H04B1/1081 ,  H04B17/21 ,  H04B17/26 ,  H04W72/0446 ,  H04W72/085

Abstract: Various embodiments for calibrating receive chains on a mobile communication device may include identifying a calibrated receive chain and an un-calibrated receive chain of the mobile communication device and obtaining a first series of gain measurements for the calibrated receive chain and a second series of gain measurements for the un-calibrated receive chain. The mobile communication device may determine a path gain difference between the calibrated receive chain and the un-calibrated receive chain based on the first series of gain measurements and the second series of gain measurements, and compensate a gain of the un-calibrated receive chain using the path gain difference.

公开(公告)号：US20170353955A1

公开(公告)日：2017-12-07

申请号：US15170803

申请日：2016-06-01

Applicant: QUALCOMM Incorporated

Inventor： Chih-Ping Hsu ,  Tarandeep Virk ,  Robert Chan ,  Xiaohu Zhang

IPC: H04W72/04 ,  H04B7/06

CPC classification number: H04W72/0453 ,  H04B7/0602 ,  H04B7/0604 ,  H04B7/0608 ,  H04W72/042 ,  H04W88/06

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may perform uplink communications on a first radio frequency spectrum band using a first transceiver and a first antenna. The first transceiver may have a first capability configuration. The UE may receive an assignment for uplink communications on a second radio frequency spectrum band and couple a second transceiver to the first antenna to perform the uplink communications on the first radio frequency spectrum band. The spectrum transceiver may have a second capability configuration that is different from the first capability configuration with respect to at least the second radio frequency spectrum band. The UE may switch the first transceiver to a second antenna for the uplink communications on the second radio frequency spectrum band.