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:
Aug. 28, 2001
Filed:
Jul. 07, 1997
Daniel J. Klostermann, Cedar Rapids, IA (US);
Intermec IP Corp., Woodland Hills, CA (US);
Abstract
A broadband antenna system includes a plurality of antenna elements, a plurality of phase shifting elements, and a circuitry connection. Each of the antenna elements has a respective antenna element operating bandwidth dependent upon the construction of the element. Each phase shifting element connects a respective one of the plurality of antenna elements to a common antenna connection with a respective bandwidth shift. The circuitry connector couples the common antenna connection to radio circuitry. With the plurality of antenna elements bandwidth shifted by the plurality of phase shifting elements, the antenna elements operate in combination with an operating bandwidth a multiple of the element operating bandwidths. The circuitry connector transforms a frequency design range harmonic impedance at the common antenna connection to a minimum impedance at a second end of the circuitry connector that connects to radio circuitry. The antenna system may be part of a radio module that includes a radio module shell containing radio circuitry, with the plurality of antenna elements substantially conforming to the radio module shell. The plurality of antennas may reside upon a dielectric layer disposed upon an external portion of the radio module shell. The circuitry connector extends through the radio module shell and dielectric layer to connect the radio circuitry to the plurality of antenna elements. Insulative spacers may connect the plurality of antenna elements to the dielectric layer such that the antenna elements reside adjacent to, and at least partially away from, the dielectric layer to enhance performance.