Title :
0.8-5.2GHz band SiGe-MMIC Q-MOD for multi-band multi-mode direct conversion transmitters
Author :
Suematsu, Noriharu ; Kageyama, Chiemi ; Nakajima, Kensuke ; Tsutsumi, Kouji ; Taniguchi, Eiji ; Murakami, Keishi
Author_Institution :
Inf. Technol. R&D Center, Mitsubishi Electr. Corp., Kanagawa, Japan
Abstract :
In order to realize multiband multimode transmitters for the 4th generation mobile communication systems based on software define radio (SDR) technology, 0.8-5.2GHz broad-band direct conversion quadrature modulator (Q-MOD) has been fabricated in 0.35μm SiGe BiCMOS process. The circuit combination of a static frequency divider and a poly phase filter (PPF) enables higher 90degree phase accuracy than that of the static frequency divider alone. By employing this 90 degree power divider, the fabricated Q-MOD achieves EVM of 4.0/3.1% rms at 0.8/2.1GHz W-CDMA transmission and 2.5% rms at 5.2GHz wireless-LAN (IEEE 802.11a) transmission.
Keywords :
4G mobile communication; BiCMOS integrated circuits; Ge-Si alloys; MMIC; UHF integrated circuits; code division multiple access; modulators; power dividers; radio transmitters; semiconductor materials; wireless LAN; 0.35 micron; 0.8 to 5.2 GHz; 2.1 GHz; 4th generation mobile communication systems; BiCMOS process; SiGe; W-CDMA transmission; broad-band direct conversion quadrature modulator; direct conversion transmitters; multiband multimode transmitters; poly phase filter; power divider; software defined radio technology; static frequency divider; wireless-LAN; 4G mobile communication; BiCMOS integrated circuits; Communication system software; Filters; Frequency conversion; Germanium silicon alloys; Radio transmitters; Radiofrequency integrated circuits; Silicon germanium; Software systems;
Conference_Titel :
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN :
0-7803-9433-X
DOI :
10.1109/APMC.2005.1606597
