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. 03, 2001
Filed:
Jul. 31, 1998
Robert E. Shoulders, Santa Rosa, CA (US);
Michal Krombholz, Santa Rosa, CA (US);
Agilent Technologies Inc., Palo Alto, CA (US);
Abstract
The present invention provides an improved power detector and more particularly a power leveling loop with a superheterodyned adjustable gain power detector. In one preferred embodiment, the adjustable gain power leveling detector receives an output signal from a directional coupler. According to the present invention, the leveling detector includes means for producing a signal whose amplitude is proportional to the amplitude of the output signal from the directional coupler and whose frequency is equal to a fixed intermodulation IF frequency, a power detector for providing a stable DC output voltage signal for an input of a single power at the IF frequency; and a leveling loop for maintaining the power detector DC voltage signal substantially constant.