Voltage controlled oscillator integrated circuit

Details Voltage controlled oscillator integrated circuit Voltage controlled oscillator integrated circuit

1997-06-25

1999-07-06

Kinkead, Arnold

Oscillators

Solid state active element oscillator

Transistors

331115, 331117R, 331177V, 331167, 331132, H03B 700

Patent

active

059202351

ABSTRACT:
A voltage controlled oscillator has a cross-coupled negative resistance cell formed as an integrated circuit connected to off-chip components of a high-Q resonant tank circuit. To counteract spurious oscillations brought about by package parasitics caused by the interconnection of the chip to the external components, the cell is provided with a degeneration impedance. Typically, a pure inductor is used if all the elements of the tank circuit are off-chip. In a case where the tank circuit includes an on-chip fixed capacitor, the degeneration impedance may take the form of a capacitor.

REFERENCES:
patent: 5434543 (1995-07-01), Brizka et al.
Grebene, "Bipolar and MOS Analog Integrated Circuit Design", pp. 571-575; 1984, John Wiley, Integrated-Circuit Oscillators and Timers.
Goyal, "High-Frequency Analog Integrated Circuit Design", pp. 312-318, 1995, John Wiley, Mixers and Oscillators.
Jansen et al, "Silicon Bipolar VCO Family for 1.1 to 2.2GHz with Fully-Integrated Tank and Tuning Circuits", IEEE ISSCC '97 Proceedings, pp. 392-396, Session 23/Analog Techniques/Paper SP 23.8.
Dawe et al, A 2.7V DECT RF Transceiver with Integrated VCO', IEEE ISSCC'97/Session 18/Wireless Transceivers and Receivers/Paper SA 18.5; pp. 308-308-309.

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