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:
Nov. 07, 1995
Filed:
Jun. 27, 1994
Applicant:
Inventors:
Raymond W Moskaluk, San Jose, CA (US);
Nancy W Nelson, San Jose, CA (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ; H04B / ; G01R / ;
U.S. Cl.
CPC ...
455313 ; 455323 ; 4552261 ; 455258 ; 324 7627 ;
Abstract
A method and apparatus for detecting a high frequency signal by down converting the high frequency signal to an intermediate frequency signal by mixing the high frequency signal with the harmonics of a minimal number of local oscillator frequency signals chosen so that at least one harmonic of at least one of the local oscillator frequency signals will convert any high frequency signal in a given frequency range to an intermediate signal in another given frequency range, and applying the result to detectors sensitive to signals in the intermediate frequency range.