Novel 900 MHz/1.9 GHz dual-mode power amplifier employing MEMS switches for optimum matching

A novel scheme is proposed for a compact band-switchable power amplifier that employs Micro-Electro-Mechanical System (MEMS) switches in a matching network (MN). According to the on/off status, the switches change the frequency response of the MN, and then the optimum matching can be achieved in dif...

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Veröffentlicht in:	IEEE microwave and wireless components letters 2004-03, Vol.14 (3), p.121-123
Hauptverfasser:	Fukuda, A., Okazaki, H., Hirota, T., Yamao, Y.
Format:	Artikel
Sprache:	eng
Schlagworte:	Amplifiers Applied sciences Bands Circuit properties Dual band Electric, optical and optoelectronic circuits Electrical engineering. Electrical power engineering Electronic circuits Electronics Exact sciences and technology FETs Frequency bands Frequency response Gallium arsenide Matching Micro- and nanoelectromechanical devices (mems/nems) Microelectromechanical systems Micromechanical devices Microswitches Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits Microwaves Optimization Power amplifiers Power electronics, power supplies Power generation Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices Switches
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Beschreibung
Zusammenfassung:	A novel scheme is proposed for a compact band-switchable power amplifier that employs Micro-Electro-Mechanical System (MEMS) switches in a matching network (MN). According to the on/off status, the switches change the frequency response of the MN, and then the optimum matching can be achieved in different frequency bands. Following the proposed scheme, a dual-band GaAs FET amplifier is designed for the 0.9-GHz and 1.9-GHz bands. The experimental results exhibit the small signal gain of greater than 16 dB and the saturated output power of 31 dBm in each frequency band with adequate efficiency. The performance levels are very close to those of single-mode power amplifiers employing the same FET.
ISSN:	1531-1309 2771-957X 1558-1764 2771-9588
DOI:	10.1109/LMWC.2003.821496