Power amplifier module with digital adaptive predistortion for cellular phone
- Resource Type
- Conference
- Authors
- Kusunoki, S.; Yamamoto, K.; Hatsugai, T.; Tagami, K.; Nagaoka, H.; Tominaga, N.; Osawa, K.; Tanabe, K.; Sakurai, S.; Iida, T.
- Source
- 2002 IEEE MTT-S International Microwave Symposium Digest (Cat. No.02CH37278) Microwave symposium digest Microwave Symposium Digest, 2002 IEEE MTT-S International. 2:765-768 vol.2 2002
- Subject
- Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Aerospace
Communication, Networking and Broadcast Technologies
Photonics and Electrooptics
Power amplifiers
Predistortion
Cellular phones
Table lookup
Power generation
Telephone sets
Voltage
CMOS integrated circuits
MMICs
Peak to average power ratio
- Language
- ISSN
- 0149-645X
This paper describes a new type of PA-module which contains a predistortion function and the application to N-CDMA handset terminals. The predistortion technology is based on look-up-table method using the input and output signal envelopes and can operate independent from the base-band block. By omitting the adaptative predistortion for AM/PM, and integrating main controlling functions on CMOS IC chip, the predistortion technique has been realized in a PA-module. The PA-module has been achieved the power added efficiency (PAE) of 48% at the output power of 27.5 dBm. This PAE is extremely high in comparison with the conventional PA-module for N-CDMA.