Title :
An X-band transmitter for satellite communication
Author :
Sen, Ozlem A. ; Sunay, Hacer K. ; Dudak, Celal
Author_Institution :
Sci. & Tech. Res. Council of Turkey, Middle East Tech. Univ., Ankara, Turkey
Abstract :
Modern satellite communication systems require high data rate, high-efficiency and simple transmitters, without sacrificing efficiency and linearity depending on the modulation scheme. Main purpose of this study is to design a transmitter with data rates up to 100 Mb/s, BPSK/QPSK/OQPSK modulation and 7 W output power at 8.2 GHz for low Earth orbit (LEO) satellites in order to satisfy the high data rate demand. Since the transmitter should be a low power, simple and low weight one, the power amplifier will be a solid state device. The power consumption of the transmitter is mainly determined by power amplifiers, which should be improved according to these constraints. In the oncoming stages of this study, the linearity and efficiency trade off for BPSK, QPSK and OQPSK modulated signals in this line-up will be observed.
Keywords :
channel coding; power amplifiers; power consumption; quadrature phase shift keying; radio transmitters; radiofrequency amplifiers; satellite communication; 100 Mbit/s; 7 W; 8.2 GHz; X-band transmitter; binary phase shift keying modulation; linearity dependence; low Earth orbit satellites; offset quadrature phase shift keying modulation; power amplifier; power consumption; quadraphase shift keying modulation; satellite communication; Binary phase shift keying; Energy consumption; Linearity; Low earth orbit satellites; Power amplifiers; Power generation; Quadrature phase shift keying; Satellite communication; Solid state circuits; Transmitters;
Conference_Titel :
Recent Advances in Space Technologies, 2003. RAST '03. International Conference on. Proceedings of
Conference_Location :
Istanbul, Turkey
Print_ISBN :
0-7803-8142-4
DOI :
10.1109/RAST.2003.1303957
