Title :
A 5 GHz sub-harmonic direct down-conversion mixer for dual-band system in 0.35 μm SiGe BiCMOS
Author :
Feng, H. ; Wu, Q. ; Guan, X. ; Zhan, R. ; Wang, A. ; Yang, L.W.
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Inst. of Technol., Chicago, IL, USA
Abstract :
A 5-6 GHz sub-harmonic mixer for a dual-band direct-down conversion transceiver is presented. The sub-harmonic technique is used to alleviate the self-mixing problem of the zero-IF architecture, which deteriorates the system sensitivity by generating a dynamic DC offset. The mixer adopts a single balanced topology that provides easy connection with single-ended LNA and ensures lower power consumption. Both differential output and single-ended output configuration are used. The design is implemented in a commercial 0.35 μm SiGe BiCMOS process and features a differential conversion gain of 0 dB at 50 Ω load and 15 dB for high-Z load, an IIP3 of +2.7 dBm, and a power consumption of 3.7 mA with 3 V supplies.
Keywords :
Ge-Si alloys; MMIC frequency convertors; MMIC mixers; integrated circuit design; network topology; power consumption; transceivers; 0 dB; 0.35 micron; 15 dB; 3 V; 3.7 mA; 5 to 6 GHz; SiGe; SiGe BiCMOS; differential conversion gain; differential output; dual-band system; dynamic DC offset; power consumption; radio frequency IC design; self-mixing problem; sensitivity; silicon-germanium alloy; single-ended output; sub-harmonic direct down-conversion mixer; transceiver; zero-IF architecture; 1f noise; BiCMOS integrated circuits; Dual band; Germanium silicon alloys; Integrated circuit noise; Mixers; Radio frequency; Radiofrequency integrated circuits; Silicon germanium; Transceivers;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465708
