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. 21, 1978
Filed:
Nov. 17, 1976
Anton Sunkler, Otterfing, DT;
Siemens Aktiengesellschaft, Berlin & Munich, DT;
Abstract
A transistor oscillator for microwave frequency ranges has a transistor with interelectrode capacitances used for feedback. A series connection of a voltage controlled variable capacitor and line element are connected to the collector of the transistor as a frequency determining element. A line element is connected to the base for feedback and bias means are connected to the base and emitter through high frequency choking means constructed of two quarter wavelength line elements, one of which is arranged in no-load fashion. An attenuation network for frequency selection action is connected to the collector feedback path to dampen the oscillating circuit and prevent frequency jumping of the oscillator outside of the band intended for useful operation.