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:
Jun. 27, 1995
Filed:
Feb. 07, 1994
Argyrios Chatzipetros, Plantation, FL (US);
Paul Marko, Ft. Lauderdale, FL (US);
Paul Krayeski, Plantation, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
An antenna (110), enclosed within a compact area of a radio (100), is not susceptible to electric fields generated from metallic shields (102, 104) located within the radio. The antenna consists of four sections of traces disposed onto a circuit board (108). The first section is a quarter-wave feed (202), which is coupled to a radio transceiver (118). The quarter-wave feed (202) converts a low impedance point (122) to a high impedance region (203). The second section of antenna (110) capacitively couples to the high impedance region (203). The third section is an isolator section (208) of half a wavelength for providing isolation from the shields (102, 104). The fourth section, quarter-wavelength radiator (214), is a trace electrically equivalent to a quarter of a wavelength having a high impedance and providing the radiating port of the antenna (110).