Title :
Si-RFIC technologies for multi-band multi-mode wireless terminals
Author :
Suematsu, Noriharu
Author_Institution :
Tohoku Univ., Sendai, Japan
Abstract :
Due to the rapid increase of wireless services below 6 GHz, multi-band multi-mode wireless terminals are becoming popular. In this paper, up/down-conversion schemes are reviewed, in addition the pros and cons are discussed. At the present, direct conversion scheme is the most appropriate for both transmitters and receivers of these terminals which are able to cover the 0.4-6 GHz RF frequency range and various modulation schemes. An example of multi-band multi-mode direct conversion Si-RFIC transceiver is introduced which was developed for 0.4-6 GHz cognitive radio terminals.
Keywords :
cognitive radio; modulation; radio transceivers; radiofrequency integrated circuits; Si-RFIC transceiver; cognitive radio terminals; modulation schemes; multi-band multi-mode wireless terminals; up/down-conversion schemes; wireless services; Cognitive radio; Frequency modulation; Radio frequency; Receivers; Transceivers; Cognitive radio; Direct Conversion; RFIC; Si-MMIC; Transceiver; Wireless communication;
Conference_Titel :
Microwave Conference Proceedings (CJMW), 2011 China-Japan Joint
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4577-0625-7
Electronic_ISBN :
978-7-308-08555-7
