Design of 5th-Order Analog Predistorter

This paper presents the design of a 5th-order analog predistorter to suppress the 3rd- and 5th-order InterModulation Distortion Products (IMDP3 and IMDP5) at the output of a base-station Power Amplifiers (PAs). The predistorter consists of two mixers: one mixer generating the 3rd-order InterModulation (IM3) products and another mixer of same configuration generating the 5th-order InterModulation (IM5) products using the IM3 products generated by the other mixer, thus simplifying the design and hardware implementation. The predistorter is implemented and tested using two-tone and the CDMA (IS-95) signals at 2.2GHz in a practical 10W-PA.

Provided by: Institute of Electrical and Electronics Engineers Topic: Mobility Date Added: Dec 2011 Format: PDF

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