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公开(公告)号：US20240106500A1
公开(公告)日：2024-03-28
申请号：US17951827
申请日：2022-09-23
Applicant: QUALCOMM Incorporated
IPC: H04B7/0413 , H04B7/155
CPC classification number: H04B7/0413 , H04B7/15507
Abstract: Designs and control techniques for passive Multiple-Input Multiple-Output (pMIMO) surfaces are provided. An example array of reconfigurable reflective elements includes a plurality of unit cells each comprising a cross-slot radiating element, a first varactor diode disposed across a first end of the cross-slot radiating element and configured to control polarization in a first plane, and a second varactor diode disposed across a second end of the cross-slot radiating element and configured to control polarization in a second plane, and a controller coupled to the first varactor diode and the second varactor diode and configured to provide control signals to the first varactor diode and the second varactor diode to vary a direction of a reflected signal.
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公开(公告)号：US20240106520A1
公开(公告)日：2024-03-28
申请号：US17934886
申请日：2022-09-23
Applicant: QUALCOMM Incorporated
CPC classification number: H04B7/145 , H01Q1/50 , H01Q3/40 , H01Q19/06 , H01Q21/061
Abstract: Aspects of the disclosure related to devices, wireless communication apparatuses, methods, and other aspects of passive multiple input multiple output. In some aspects, an apparatus is provided that includes a first radio frequency (RF) transmission line having a first terminated with a quarter wavelength grounded transmission line, and a first array of antennas including a plurality of antenna elements. The apparatus also includes a switch array including a corresponding switch for each antenna element of the plurality of antenna elements of the first array of antennas, to selectively connect each antenna element to the first RF transmission line, and path lengths selectable by the switches at half wavelength distances for passive transmission. The apparatus also includes or more lens elements configured to modify wireless inputs signals to the first array of antennas and to modify wireless output signals from the first array of antennas.
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公开(公告)号：US20210135833A1
公开(公告)日：2021-05-06
申请号：US17086368
申请日：2020-10-31
Applicant: QUALCOMM Incorporated
Inventor： Charline HAO , Lida AKHOONDZADEHASL , Joseph Patrick BURKE , Dai LU , Muhammad Sayed Khairy ABDELGHAFFAR , Allen Minh-Triet TRAN , Shimman Arvind PATEL , Tingfang JI , Krishna Kiran MUKKAVILLI
IPC: H04L5/14 , H04L12/947 , H04B7/06 , H04W88/08
Abstract: A base station is disclosed that includes two separated antenna arrays. In a TDD mode of operation, both arrays are used for either transmit or receive. In a sub-band full-duplex mode of operation, one array is used to transmit downlink symbols while the remaining array is used to receive uplink symbols.
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