Title :
0.4-5.2GHz SiGe-MMIC Direct Conversion Mixer for Cognitive Radio Receiver
Author :
Suematsu, Noriharu ; Tsutsumi, Koji ; Koide, Jun ; Uesugi, Mikio ; Harada, Hiroshi
Author_Institution :
Inf. Technol. R&D Center, Mitsubishi Electr. Corp., Kanagawa
Abstract :
0.4-5.2 GHz broad-band SiGe-MMIC direct conversion quadrature mixer (Q-MDC) has been developed for multi-band multi-mode cognitive radio receivers by using 0.35 mum SiGe BiCMOS process. To realize broad-band characteristic, a static frequency divider with two-stage emitter follower is used as 90 degree power divider for LO and broad-band doubly balanced mixers are used as I/Q unit mixers. The 90 degree power divider enable to achieve multi-octave operation for LO which covers whole band of 0.4-5.2 GHz. Broad-band unit mixers also enable to achieves wide RF band (0.4-5.2 GHz) and wide base band (up to 500 MHz). The fabricated Q-MIX performs EVM of less than 3% over the whole RF frequency range of 0.4 -5.2 GHz and shows the dynamic range of more than 40 dB for 0.4 GHz UHF application (16 QAM/OFDM), 0.8 GHz/2 GHz W-CDMA (QPSK) and 5.2 GHz IEEE 802.11a W-LAN (64 QAM/OFDM) receptions
Keywords :
BiCMOS integrated circuits; Ge-Si alloys; MMIC frequency convertors; MMIC mixers; OFDM modulation; UHF frequency convertors; UHF integrated circuits; UHF mixers; code division multiple access; frequency dividers; mobile radio; quadrature amplitude modulation; quadrature phase shift keying; radio receivers; wireless LAN; 0.35 mum; 0.4 to 5.2 GHz; BiCMOS process; IEEE 802.11a; MMIC direct conversion mixer; OFDM; QAM; QPSK; SiGe; UHF application; W-CDMA; WLAN; broad-band characteristic; broad-band doubly balanced mixers; cognitive radio receiver; multiband multimode receivers; static frequency divider; two-stage emitter follower; BiCMOS integrated circuits; Cognitive radio; Germanium silicon alloys; Mixers; OFDM; Power dividers; Quadrature amplitude modulation; Radio frequency; Receivers; Silicon germanium; Demodulation; MMIC mixers; MMIC receivers; Mobile communication; Wireless LAN;
Conference_Titel :
Radio and Wireless Symposium, 2007 IEEE
Conference_Location :
Long Beach, CA
Print_ISBN :
1-4244-0445-2
Electronic_ISBN :
1-4244-0445-2
DOI :
10.1109/RWS.2007.351861
