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:
Jan. 16, 2001
Filed:
Oct. 22, 1999
Michael David Valentine, Cincinnati, OH (US);
Stephen Ray Scholl, Cincinnati, OH (US);
Harry Joe Gould, Mesa, AZ (US);
Valentine Research, Inc., Cincinnati, OH (US);
Abstract
A novel frequency scheme for a police radar detector enables improved sweeping of the X, K, K,and K,radar bands. The novel frequency scheme requires two initial frequency conversions for detection of the X, K and K,radar bands and a single initial frequency conversion for the K,radar band with single initial frequency conversion being enabled by disabling the second mixer. During sweeping of the X, K and K,bands, selectable, i.e., upper or lower, sideband suppression is employed to reduce undesired image sidebands and noise prior to the second frequency conversion. In addition, noise at the second IF frequency is reduced to prevent this noise from feeding through the second mixer into the second IF amplifier. During the K,band sweep, the second mixer is bypassed and shunting of signals at the second IF frequency is disabled so that these signals enter the second IF amplifier.