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:
Nov. 04, 2014
Filed:
Aug. 30, 2011
Kento Nakabayashi, Anjo, JP;
Tetsuya Katayama, Aichi-ken, JP;
Shin-ichiro Matsuzawa, Nisshin, JP;
Masaru Ogawa, Seto, JP;
Kento Nakabayashi, Anjo, JP;
Tetsuya Katayama, Aichi-ken, JP;
Shin-ichiro Matsuzawa, Nisshin, JP;
Masaru Ogawa, Seto, JP;
Denso Corporation, Kariya, JP;
Abstract
A radar apparatus forming a series-feed array-antenna includes an array antenna having transmission/reception antennas, and each antenna includes a plurality of antenna elements arrayed with feed-lines to be series-connected each other. A calibration line is disposed between the transmission antenna and the reception antenna via a switch which connects or disconnects the calibration line. The signal having a phase shift is transmitted via the calibration line when the switch connects the calibration line and an amount of phase shift from the signal transmitted via the calibration line is calculated based on a reference phase at the transmission antenna thereby calibrating the phase shift.