668 Robinson Rd, Sebastopol, CA 95472 • (916)3371085
4420 Lahinch Ln, Santa Rosa, CA 95403
Palo Alto, CA
San Leandro, CA
San Jose, CA
Pleasanton, CA
Marietta, GA
Isbn (Books And Publications)
Homotopy Methods in Algebraic Topology: Proceeding of an Ams-Ims-Siam Joint Summer Research Conference Held at University of Colorado, Boulder, Colorado, June 20-24, 1999
Dr. Kuhn graduated from the University of Colorado School of Medicine at Denver in 2006. He works in Portland, OR and specializes in Internal Medicine. Dr. Kuhn is affiliated with Good Samaritan Regional Medical Center and Providence Saint Vincent Medical Center.
Roland Hassun - San Mateo CA Nicholas J Kuhn - Santa Rosa CA
Assignee:
Agilent Technologies Inc. - Palo Alto CA
International Classification:
G01R 2926 H04Q 720
US Classification:
702 69
Abstract:
Intermodulation distortion (IMD), especially in the form of adjacent-channel power ratio (ACPR), is an important specification for cellular base stations, especially for the power amplifier. Suppliers must demonstrate that they meet these specifications. The specifications for some of the newer communications formats, such as some forms of wideband CDMA and for multi-carrier base stations, dictate levels of ACP that seriously challenge the ability of test equipment to perform the measurement. Similar considerations apply to measuring other parameters that quantize intermodulation distortion effects, including multi-tone methods and noise power ratio. The present invention provides a technique for measuring ACP and other forms of IMD of amplifiers and other two -port devices. The technique, which uses standard equipment, enhances the normal dynamic range of measurement by at least 25 dB.