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:
Sep. 08, 2020
Filed:
Mar. 02, 2018
Pc-tel, Inc., Bloomingdale, IL (US);
Umesh Navsariwala, Bartlett, IL (US);
Jesse Lin, Lisle, IL (US);
PC-TEL, INC., Bloomingdale, IL (US);
Abstract
An antenna system that can reduce signal radiation in an unwanted direction while preserving signal radiation outside of the unwanted direction is provided. The antenna system can include a signal input source with a main antenna and a secondary antenna each electrically coupled to the signal input source. The main antenna can transmit a primary signal to produce a primary radiation pattern in response to a first portion of energy from the signal input source, and the secondary antenna can transmit a secondary signal to produce a secondary radiation pattern in response to a second portion of energy from the signal input source. The secondary signal can be amplitude modified and phase shifted to position the secondary radiation pattern to cancel out or reduce a portion of the primary radiation pattern extending in an unwanted direction while substantially preserving portions of the primary radiation pattern outside of the unwanted direction.