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. 11, 2006
Filed:
Jul. 16, 2004
Jan-ove U. Mattsson, Plantation, FL (US);
Paloma I. Lampert, Plantation, FL (US);
David Hartley Minasi, Fort Lauderdale, FL (US);
Jan-Ove U. Mattsson, Plantation, FL (US);
Paloma I. Lampert, Plantation, FL (US);
David Hartley Minasi, Fort Lauderdale, FL (US);
Motorola, Inc,, Schaumburg, IL (US);
Abstract
An antenna structure () that includes a Planar Inverted-F Antenna (PIFA) () and an extendable portion such as a whip element (). The PIFA () operates normally when the extendable portion () is retracted and upon extension, an electrical contact is made between the extendable portion () and the end () of the PIFA () that is electrically opposite, i.e., furthest along the electrically conductive path of the PIFA, from the feed structure () for the PIFA (). The electrical length of the composite antenna () is then substantially equal to the sum of the electrical length of the PIFA () and extendable portion (). An embodiment disconnects the ground path of the PIFA feed structure upon extension of the extendable portion () to provide constant input impedance.