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:
Jul. 31, 1984
Filed:
Aug. 14, 1981
Bentley N Scott, Richardson, TX (US);
Gailon E Brehm, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A microwave voltage-controlled oscillator includes a varactor-controlled tuned circuit connected to the gate of an FET. The gate of the FET forms a Schottky barrier contact with the channel region. This Schottky barrier operates to clip the RF voltages generated in the gate circuit, and this clipping is used to provide the necessary gate bias to set the operating point of the VCO. No other source of bias is provided, and thus no DC return path from the gate circuit to the source or drain of the FET exists. Thus, the other circuit elements normally required to establish the gate operating point, which would have high frequency resonances, are eliminated. This permits operation of a microwave VCO over an extremely broad bandwidth.