Title :
A 35.2-37.6 GHz LC VCO in a 70/100 GHz fT/fmax SiGe technology
Author :
Veenstra, H. ; van der Heijden, Edwin
Author_Institution :
Philips Res., Eindhoven, Netherlands
Abstract :
An LC VCO circuit uses two cascaded emitter followers with resistive loads and combines negative resistance and output buffers. The VCO is particularly suited for frequencies above the limit of the cross-coupled differential pair, and a 35.2-37.6 GHz VCO achieves a phase noise of -105 dBc/Hz at 2 MHz from the carrier, in a 0.25 μm production SiGe technology.
Keywords :
Ge-Si alloys; MIMIC; MMIC amplifiers; MMIC oscillators; buffer circuits; cascade networks; integrated circuit measurement; integrated circuit noise; millimetre wave amplifiers; millimetre wave oscillators; negative resistance circuits; phase noise; semiconductor materials; 0.25 micron; 100 GHz; 35.2 to 37.6 GHz; 70 GHz; LC VCO; SiGe; SiGe technology; VCO frequencies; cascaded emitter followers; cross-coupled differential pair frequency limit; negative resistance; output buffers; phase noise; resistive loads; Bandwidth; Capacitance; Circuit topology; Germanium silicon alloys; Integrated circuit modeling; Phase noise; Production; Radio frequency; Silicon germanium; Voltage-controlled oscillators;
Conference_Titel :
Solid-State Circuits Conference, 2004. Digest of Technical Papers. ISSCC. 2004 IEEE International
Print_ISBN :
0-7803-8267-6
DOI :
10.1109/ISSCC.2004.1332760
