DocumentCode
2946226
Title
Measurement of ACLR with high dynamic range
Author
Andersen, Olav ; Wisell, David ; Keskitalo, Niclas
Author_Institution
Ericsson AB, 80176 Gÿvle, Sweden
fYear
2008
fDate
15-20 June 2008
Firstpage
273
Lastpage
277
Abstract
In this paper a method to overcome the insufficient dynamic range of RF measurement instruments, i.e. signal generators and spectrum analyzers, for distortion measurements on feedforward and other highly linear amplifiers, is discussed. A circuit board is designed, built and verified. Its performance is found to be superior to traditional methods using filters, both from a technical performance and flexibility standpoint as well as from an economic view. ACLR measurements for WCDMA signals can be done well below -70 dBc using the produced circuit board.
Keywords
code division multiple access; power amplifiers; printed circuits; radiofrequency amplifiers; RF measurement instruments; WCDMA signals; circuit board; feedforward; linear amplifiers; signal generators; spectrum analyzers; Distortion measurement; Dynamic range; Filters; Flexible printed circuits; Instruments; Multiaccess communication; Radio frequency; Radiofrequency amplifiers; Signal generators; Spectral analysis; Intermodulation; power amplifiers;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Symposium Digest, 2008 IEEE MTT-S International
Conference_Location
Atlanta, GA
ISSN
0149-645X
Print_ISBN
978-1-4244-1780-3
Electronic_ISBN
0149-645X
Type
conf
DOI
10.1109/MWSYM.2008.4633156
Filename
4633156
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