Title :
A low-cost direct microwave QAM modulator using silicon MMIC technology
Author :
Mohammadi, A. ; Kumar, S.
Author_Institution :
Telecommun. Res. Labs., Saskatoon, Sask., Canada
Abstract :
A new method to realize a direct microwave QAM modulator is discussed. The architecture uses SPDT switches and pin diode reflection attenuators to realize a QAM modulator. The attenuators use pin diodes in a forward bias condition to overcome the speed limitation. This slew architecture provides a high speed QAM modulator, and its implementation using Si-MMIC results a cost efficient and high performance modulator for wireless systems.
Keywords :
MMIC; attenuators; elemental semiconductors; integrated circuit technology; microwave switches; modulators; p-i-n diodes; quadrature amplitude modulation; radio equipment; silicon; MMIC technology; SPDT switches; Si; forward bias condition; high performance modulator; high speed QAM modulator; low-cost direct microwave QAM modulator; pin diode reflection attenuators; slew architecture; speed limitation; wireless systems; Attenuators; Baseband; Costs; MMICs; Microwave filters; Microwave technology; Quadrature amplitude modulation; Reflection; Silicon; Switches;
Conference_Titel :
Technologies for Wireless Applications, 1999. Digest. 1999 IEEE MTT-S Symposium on
Conference_Location :
Vancouver, BC, Canada
Print_ISBN :
0-7803-5152-5
DOI :
10.1109/MTTTWA.1999.755142
