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Memory Effect Pre-compensation for Wideband RF Power Amplifiers Using FIR-Based Weak Nonlinear Filters

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6 Author(s)

This paper proposes an effective memory effect pre-compensation technique, which is based on a weak nonlinear finite impulse response (FIR) filter. This weak nonlinear FIR filter comprises two FIRs in parallel with different inputs. The performance evaluation of this pre-compensation technique is carried out on an L-band push-pull GaAs FET 45-dBm peak-envelope-power amplifier using 3GPP-FDD WCDMA signals. The validation results in spectrum domain demonstrate noticeable superiority of the proposed weak nonlinear FIR filter in suppressing the memory effects in comparison to a traditional FIR filter.

Published in:

Microwave and Millimeter Wave Technology, 2007. ICMMT '07. International Conference on

Date of Conference:

18-21 April 2007

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