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:
Sep. 28, 2004
Filed:
Jan. 16, 2003
Alberto Oscar Adan, Ikoma, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
In a multi-terminal MOS varactor, a floating electrode of a MOS capacitor (Cf) is connected to one of two terminals of each of a plurality of capacitors (C -Cn) - through - . To the other terminals (Vg -Vgn) - through - of the respective capacitors (C -Cn) - through - , control voltages Vg Vgn are applied, and a terminal (Vn) of the MOS capacitor (Cf) , the terminal being on the side of a well, receives a control voltage. In the multi-terminal MOS varactor with the arrangement above, it is possible to progressively change the valid electrostatic capacity C of the other terminal (Vgj) - of an arbitrary capacitor (Cj) - , by changing the control voltage. Since electrostatic capacity can be progressively changed in this MOS varactor, adopting this MOS varactor to an oscillator enables to control a frequency and sensitivity of the oscillator.