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. 10, 2010
Filed:
Sep. 29, 2005
Kensuke Murata, Fukuoka, JP;
Hiroshi Tsuboi, Fukuoka, JP;
Kengo Iwata, Fukuoka, JP;
Tomoyuki Abe, Fukuoka, JP;
Kensuke Murata, Fukuoka, JP;
Hiroshi Tsuboi, Fukuoka, JP;
Kengo Iwata, Fukuoka, JP;
Tomoyuki Abe, Fukuoka, JP;
Toto Ltd., Fukuoka, JP;
Abstract
A microstrip antenna has feed elementand parasitic elementson the front surface of substrate. Microwave electrical power is applied to feed element. Parasitic elementsare connected via through hole type leads passing through substrate, to switches upon the rear surface of substrate, respectively. By actuating the switches individually, parasitic elementsare individually switched between a grounded state and a float state. The direction of the radio beam emitted from the microstrip antenna is varied by selecting which of parasitic elementsis grounded and floated. A microwave signal source connects to feed elementvia an feed linevery much shorter than the wavelength, accordingly the transmission losses being low and the efficiency being excellent.