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:
Dec. 11, 2012
Filed:
Jan. 13, 2009
Kevin R. Boyle, West Sussex, GB;
Kevin R. Boyle, West Sussex, GB;
Epcos AG, Munich, DE;
Abstract
A method of offsetting a mismatch due to user interaction when handling a portable wireless terminal in which antenna matching is changed from inductive matching to capacitive matching in response to a reactance change exceeding a threshold level and vice versa when an opposite change is detected. An antenna interface module () is coupled between a RF output or input stage (or) and an antenna (or). The antenna interface module includes first and second switches (SW, SWor SW, SW), a first matching circuit including an inductive reactance (or) coupled between the power amplifier and the first switch and a second matching circuit including a capacitive reactance (or) is coupled between the RF output or input stage and the second switch (SWor SW). A reactance threshold detector (or) determines if the reactance change traverses a predetermined threshold value and causes the first and second switches to be actuated so that the matching changes from inductive to capacitive or vice versa.