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Third and fifth order base-band component injection for linearization of the power amplifier in a cellular phone

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2 Author(s)
Mizusawa, N. ; Sony Ericsson Mobile Commun. Japan Inc., Tokyo, Japan ; Kusunoki, S.

With some injection techniques for use in cellular-phone amplifiers, there is a limit to distortion compensation. This paper proposes a new predistortion technique that injects third-and fifth-order distortion components in the base-band block. By using this technique, the distortion-compensation limit can be raised. This paper also examines the distortion compensation performance of W-CDMA PA and the possibility of applying a new low-voltage, high-capacity battery.

Published in:

Microwave Symposium Digest, 2005 IEEE MTT-S International

Date of Conference:

12-17 June 2005