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:
Mar. 18, 2003
Filed:
Oct. 12, 2001
Tsunehisa Marumoto, Tokyo, JP;
Ryuichi Iwata, Tokyo, JP;
Youichi Ara, Tokyo, JP;
Hideki Kusamitu, Tokyo, JP;
Kenichiro Suzuki, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A relatively small and inexpensive phased array antenna provided even if the number of radiators is increased to enhance the gain. The phased array antenna has a multilayer structure including layers where a large number of radiators ( ), phase-shifting units ( ) each for shifting the phase of a high-frequency signal transmitted/received by the corresponding radiator, and a distributing/synthesizing unit ( ) are provided respectively. The phase-shifting circuits ( A to D) constituting the phase-shifting units ( ) are driven by the respective driver units ( ). A switch ( S) used for the phase-shifting unit is provided together with the other wiring pattern on the layer where the phase-shifting units ( ) are provided.