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:
Feb. 19, 2013
Filed:
Sep. 26, 2008
Hitoshi Utagawa, Koganei, JP;
Toshiaki Matsui, Koganel, JP;
Hitoshi Utagawa, Koganei, JP;
Toshiaki Matsui, Koganel, JP;
National Institute of Information and Communications Technology, Koganei-shi, JP;
Communications Research Laboratory, Inc., Koganei-shi, JP;
Abstract
A baseband signal processing unit changes the collector current of a transistor () formed by a bias control circuit () in accordance with a baseband transmission signal input from a baseband signal input terminal (), changing the drain bias of a high-frequency transistor () to realize frequency modulation by changing the oscillation frequency, and the radiation wave thereof forms a transmit RF signal, whereby the transmission operation is performed. On the other hand, the oscillation signal is synchronized with a frequency modulated RF signal that arrives from outside, the change in frequency caused by the frequency modulation is generated as a change in the drain bias of the high-frequency transistor (), and reception operation is performed by taking out that change as a voltage amplitude change from the baseband signal output terminal (). As a result, it is possible to provide a microwave/millimeter wave communication apparatus that is simple in structure, low cost, and low power consumption.