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:
Apr. 27, 1982
Filed:
Jun. 10, 1980
William D Cornish, Ottawa, CA;
Abstract
A frequency divider is known which uses varactor diodes in a circuit which resonates at f.sub.o /N where N is an even integer. Because of circuit losses within the varactor diodes, amplifiers are generally required to recover the input signal level. For systems that require cascaded frequency dividers at least one amplifier is required for each frequency divider. The present invention overcomes these problems by providing a microwave frequency divider to perform parametric frequency division and amplification simultaneously at microwave frequencies. A signal f.sub.o is applied to an input transmission line which forms, with the inherent frequency dependent non-linear gate-to-source capacitance of at least one MESFET, a circuit resonant at f.sub.o /N, wherein N is an even integer such as 2. The source-drain path of the MESFET is coupled via an output transmission line to a balun transformer having an output to provide amplified signals at f.sub.o /N. The transmission lines may be microstrip, stripline or other suitable type of transmission line.