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, 1982
Filed:
Sep. 12, 1980
Charles M Puckette, Scotia, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
A linear mixer, having essentially no spurious responses below the fifth harmonic of a local oscillator frequency, utilizes a balanced demodulator summation network having first and second inputs each receiving an RF input signal via an associated one of a pair of switches operated at the local oscillator frequency. The local oscillator waveform is selected to eliminate the third harmonic thereof, whereby a baseband signal output of the summation network is a signal having essentially zero magnitude responses at at least the second, third, fourth and sixth harmonics of the oscillator frequency. Digital circuitry to provide the required oscillator waveform is disclosed.