Optimization on RF devices design applied in wireless communications

 

C. Alor¹ & D. H. Covarrubias²

 

¹ Facultad de Ingeniería Mecánica y Eléctrica , UANL. Cd Universitaria, San Nicolás de los Garzas. Nuevo León, C.P 64450, México. Email: calor@gama.fime.uanl.mx

² Grupo de Comunicaciones Inalámbricas Centro de Investigación Científica y de Educación Superior de Ensenada - CICESE Km.107 CARR. TIJUANA-ENSENADA, ENSENADA, B.C. C.P.22860, Méxco. Email: dacoro@cicese.mx.

 

Received: June 23^th 2001.
Acepted February 9^the 2002.

 

ABSTRACT

Third generation (3G) cellular mobile communications demands very strict requirements on transreceptor devices design, in mobile terminal or base station [1].

Particularly, in mobile terminal, design requirements of power amplifier indicate the next parameters: High linearity (<-42dBc), low distortion (-42dBc), compression level of 1 dB, power gain (>20dB), maximum output power (28 dB), by the way of together carry out with the relationship Carrier to Interference (C/I) of 9 dB [2]. In this article, we will present the optimum design of these devices that carrying with such requirements, furthermore, saving more than 20 % of general power consumption in DC.

Keywords: Power amplifier, mobile communications, mobile terminal. high linearity. low distortion, miminum power consumption.

 

RESUMEN

La tercera generación de comunicaciones celulares demanda requisitos muy estrictos en el diseño de dispositivos transreceptores para las estaciones de base o móviles. En este artículo presentamos un diseño óptimo de estos transreceptores, que cumplan las altas especificaciones demandadas, ahorrando adicionalmente más del 20% de la potencia consumida en DC.

 

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References

[1] Covarrubias D., 2000, Notas del curso de maestría Comunicaciones Móviles Celulares. CICESE. Octubre.         [ Links ]

[2] Asbeck P., 1999 Linear Power Amplifiers, Press-IEEE Press, U.S.A. UCSD.         [ Links ]

[3] Elizabeth G., 2000 "Application of Enhancement Mode Fet Technology for Wireless Subscriber Transmit/Receive Circuits", Press-IEEE Press, U.S.A .35(9):1276-1284p.         [ Links ]

[4] Park Hyun-Min, 2000 "A Predistorsion Linearizer Using Envelope-Feedback Technique Witch Simplified Carrier Cancellation Scheme for Class-A and Class-AB Power Amplifier", Press-IEEE Press,U.S.A. 48(6):898-904p.         [ Links ]

[5] Tseng peir-Der, 2000 "A 3V Monolithic SiGe HBT Pow er Ampifier for Dual-Mode (CDMA/AMPS) Cellular Handset Applications", Press-IEEE Press, U.S.A. 35(9):1338-1344p.         [ Links ]

[6] Zhou G.Tong, 2000 "Analysis of Spectral Regrow th of weakly Nonlinear Power Amplifier", Press-IEEE Press,U.S.A. 4(11):357-359p.         [ Links ]