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A method for computing adjacent-channel spectral energy in cellular power amplifiers

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1 Author(s)
Pinsky, S. ; TriQuint Semicond. Inc., Hillsboro, OR, USA

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.

Published in:

Microwave Symposium Digest, 1998 IEEE MTT-S International  (Volume:3 )

Date of Conference:

7-12 June 1998