The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 2023
Filed:
Jul. 04, 2019
Npl Management Limited, Middlesex, GB;
Tian Hong Loh, Teddington, GB;
Ghulam Ahmad, Lahore, PK;
Tim Brown, Guildford, GB;
Craig Underwood, Guildford, GB;
NPL MANAGEMENT LIMITED, Teddington, GB;
Abstract
Reflectarray antenna elements, reflectarrays, and a method of operating an antenna element are described. A reflectarray antenna element includes a patch () of electrically conductive material for reflecting an electromagnetic field; a dielectric substrate () providing an RF ground; first and second phase control lines () of electrically conductive material arranged to interact with electromagnetic radiation with a first polarisation; a first binary switching device () having an ON or OFF state disposed between the patch and ground, and configured to selectively electrically couple the patch to ground via the first phase control line; a second binary switching device () having an ON or OFF state disposed between the patch and ground, and configured to selectively electrically couple the patch to ground via the second phase control line; a single DC bias input electrically coupled to the patch and configurable to different discrete voltage levels for selectively controlling the states of the switching devices. Selective operation of the first and second binary switching devices occurs by means of the DC bias input provides phase control of electromagnetic radiation dependent on the state of the switching devices. Described is a phase control mechanism of unit cells to enable a reconfigurable/smart reflectarray platform.