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. 25, 2004
Filed:
Jun. 28, 2000
Shimen K. Claxton, Encino, CA (US);
Mark Kintis, Manhattan Beach, CA (US);
Craig R. Talbott, Huntington Beach, CA (US);
Northrop Grumman Corporation, Los Angeles, CA (US);
Abstract
A frequency down-converter ( ) for a receiver ( ) in a wireless telecommunications system. The down-converter ( ) is capable of simultaneously processing a plurality of signal channels without increased signal distortion over a relatively wide bandwidth. The frequency down-converter ( ) employs a suitable mixer ( ), bandpass filter ( ), attenuator ( ) and transformer ( ) that are tuned to provide the desired frequency down-conversion and amplitude control over the desired wideband width. In one embodiment, the bandpass filter passes a frequency band at 25 MHz or above. The frequency down-converter ( ) generates the IF signal in a single step down-conversion process, or generates the IF signal and then a baseband signal in a two step down-conversion process.