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. 01, 2006
Filed:
Mar. 09, 2004
Toshiaki Shirosaka, Kobe, JP;
Toshio Fujita, Kobe, JP;
Kiyotaka Tatekawa, Kobe, JP;
Shingo Fujisawa, Kobe, JP;
Toshiaki Shirosaka, Kobe, JP;
Toshio Fujita, Kobe, JP;
Kiyotaka Tatekawa, Kobe, JP;
Shingo Fujisawa, Kobe, JP;
DX Antenna Company, Limited, Hyogo-Ken, JP;
Abstract
A signal receiving system includes a variable directivity antenna having its directivity varied in accordance with a control signal applied thereto. A control signal generator generating the control signal is provided in a receiving apparatus. The receiving apparatus includes also a modulator operating to ASK (amplitude-shift-keying) modulate a carrier with the control signal from the control signal generator into an ASK modulated signal. The ASK modulated signal is applied through a transmission line to the variable directivity antenna, and a controller associated with the variable directivity antenna demodulates the ASK modulated signal to recover the control signal for use in varying the directivity of the variable directivity antenna.