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:
May. 27, 1997
Filed:
Feb. 12, 1996
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A frequency converter includes a high-frequency signal input circuit for forming a high-frequency signal with bias voltage or current to output a bias-added high-frequency signal; a local oscillation signal input circuit having a first element for forming a local oscillation signal with bias voltage or current and an element for suppressing a noise component having a frequency near a frequency of multiple of even number of a local oscillation frequency to output a bias-added and noise suppressed local oscillation signal; and a multiplication circuit for multiplying the bias-added high-frequency signal and the bias-added and noise suppressed local oscillation signal. By the constitution, it is possible to convert the high-frequency signal into a desired frequency signal having low influence of noises having frequency near the frequency of multiple of even number especially zero or two of the local oscillation signal to thereby reasonably suppress gain and noise in the high-frequency amplifier and local oscillator and reducing a current consumption of a radio receiver.