Christian Fager
Microwave Electronics Lab., Dept. of Microtechnology and Nanoscience, Chalmers University of Technology, Sweden
Herbert Zirath
Microwave Electronics Lab., Dept. of Microtechnology and Nanoscience, Chalmers University of Technology, Sweden
Ladda ner artikelIngår i: GigaHertz 2003. Proceedings from the Seventh Symposium
Linköping Electronic Conference Proceedings 8:40, s.
Publicerad: 2003-11-06
ISBN:
ISSN: 1650-3686 (tryckt), 1650-3740 (online)
This paper presents an analytical large signal intermodulation distortion (IMD) analysis which allows the origins of IMD in power amplifiers (PAs) to be understood; and the behavior in different classes of operation to be predicted versus input power. Two tone measurements on a 950 MHz RF CMOS PA in different classes of operation are used to illustrate typical behavior and demonstrate application of the method presented.
[1] E. Costa; M. Midrio; and S. Pupolin; “Impact of amplifier nonlinearities on OFDM transmission system performance;” IEEE Communications Lett.; vol. 3; no. Feb.; pp. 37–9; 1999.
[2] S. C. Cripps; RF power amplifiers for wireless communications; ser. Artech House microwave library. Boston: Artech House; 1999.
[3] S. Maas; Nonlinear microwave circuits. Piscataway: IEEE Press; 1997.
[4] C. Fager; “Microwave FET modeling and applications;” Ph.D. Thesis; Chalmers University of Technology; 2003.
[5] N. Carvalho and J. Pedro; “Large- and small-signal IMD behavior of microwave power amplifiers;” IEEE Trans. Microwave Theory Tech.; vol. 47; no. 12; pp. 2364–74; Dec. 1999.
[6] L. R°ade and B. Westergren; Beta : Mathematics handbook. Bromley: Chartwell-Bratt; 1990.
[7] C. Fager; J. Pedro; N. Carvalho; and H. Zirath; “Prediction of IMD in LDMOS transistor amplifiers using a new largesignal model;” IEEE Transactions on Microwave Theory and Techniques; vol. 50; no. 12; pp. 2834–42; Dec. 2002.
[8] F. Fortes and M. J. Ros´ario; “A second harmonic class F power amplifier in standard CMOS technology;” IEEE Trans. Microwave Theory Tech.; vol. 49; no. 6; pp. 1216–20; June 2001.