Title :
A family of SiGe quadrature oscillators for microwave applications
Author :
Welch, Brian ; Zhan, Jing-Hong ; Kornegay, Kevin
Author_Institution :
Cornell Broadband Commun. Lab., Cornell Univ., Ithaca, NY, USA
Abstract :
A family of quadrature oscillators for operation in the 14-26 GHz range has been designed in a 0.25 μm SiGe BICMOS technology with an ft of 47 GHz. These oscillators employ a transmission line tank, an emitter degenerated cross-coupled pair, and SiGe HBT or CMOS 50 Ω buffers. Output powers of between -2.5 dBm and -32 dBm are displayed, with phase noise ranging from -99.18 dBc/Rz to -83.10 dBc/Hz. This family of quadrature oscillators exhibits the highest oscillation frequency relative to ft of any SiGe quadrature oscillator reported to date.
Keywords :
BiCMOS integrated circuits; CMOS integrated circuits; Ge-Si alloys; bipolar integrated circuits; buffer circuits; microwave oscillators; 0.25 micron; 14 to 26 GHz; 47 GHz; 50 ohm; BICMOS technology; CMOS buffers; Ge-Si; HBT buffers; SiGe quadrature oscillators; emitter degenerated cross-coupled pair; microwave applications; transmission line tank; BiCMOS integrated circuits; CMOS technology; Frequency; Germanium silicon alloys; Heterojunction bipolar transistors; Microwave oscillators; Phase noise; Power generation; Power transmission lines; Silicon germanium;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465729
