A 48 GHz 196 dB-FOM LC VCO With Double Cap-Degeneration Negative-Resistance Cell

This letter presents a 48-GHz capacitively emitter-degenerated LC voltage controlled oscillator (VCO) with double cross-coupled pair showing higher and lower input capacitance than typical cross-coupled pairs. The phase noise of the proposed LC VCO is measured as 114.5 dBc/Hz at 1 MHz offset from 48...

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Veröffentlicht in:	IEEE microwave and wireless components letters 2008-05, Vol.18 (5), p.341-343
Hauptverfasser:	LEE, Ja-Yol, KIM, Haecheon, LEE, Sang-Heung, YU, Hyun-Kyu
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Capacitance Capacitive-degeneration Circuit properties Circuits Current carriers Current measurement Dubnium Electric, optical and optoelectronic circuits Electronic circuits Electronics Emittance Exact sciences and technology Figure of merit Frequency Joining processes Microwaves Noise Noise measurement Oscillators, resonators, synthetizers Parasitic capacitance Phase measurement Phase noise Tuning Voltage controlled oscillators voltage-controlled oscillator (VCO)
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Beschreibung
Zusammenfassung:	This letter presents a 48-GHz capacitively emitter-degenerated LC voltage controlled oscillator (VCO) with double cross-coupled pair showing higher and lower input capacitance than typical cross-coupled pairs. The phase noise of the proposed LC VCO is measured as 114.5 dBc/Hz at 1 MHz offset from 48 GHz carrier, and a current of 6 mA is drawn in the VCO circuit. The proposed VCO shows an excellent figure of merit of 196 dB.
ISSN:	1531-1309 2771-957X 1558-1764 2771-9588
DOI:	10.1109/LMWC.2008.922126