Title :
A method for computing adjacent-channel spectral energy in cellular power amplifiers
Author_Institution :
TriQuint Semicond. Inc., Hillsboro, OR, USA
Abstract :
The requirements for energy efficiency in cellular RF power amplifiers necessitate their operation in regions of significant nonlinear distortion, with a resultant regrowth of undesired adjacent-channel spectral products that must be maintained within specified limits. This paper presents a method for predicting adjacent-channel spectral regrowth based on single-tone distortion curves that are easily measured in the laboratory and readily simulated in SPICE. The method affords a practical approach to predicting adjacent-channel power that has proven very useful for designing power amplifiers for cellular service under the IS-54 standard.
Keywords :
UHF power amplifiers; adjacent channel interference; cellular radio; electric distortion; radio equipment; spectral analysis; ACP; IS-54 standard; RF power amplifiers; adjacent-channel power prediction; adjacent-channel spectral energy; adjacent-channel spectral regrowth; cellular power amplifiers; energy efficiency; nonlinear distortion; single-tone distortion curves; Distortion measurement; Energy efficiency; Laboratories; Nonlinear distortion; Operational amplifiers; Power amplifiers; Predictive models; Radio frequency; Radiofrequency amplifiers; SPICE;
Conference_Titel :
Microwave Symposium Digest, 1998 IEEE MTT-S International
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-4471-5
DOI :
10.1109/MWSYM.1998.700681
