Oscillators – With frequency calibration or testing
Patent
1996-06-24
1998-06-09
Grimm, Siegfried H.
Oscillators
With frequency calibration or testing
331177V, H03B 500, H03L 700
Patent
active
057641099
ABSTRACT:
The invention is related to an electrically tunable voltage-controlled oscillatory circuit, wherein the negative bias voltage (-Vcf) of a capacitance diode (5) needed for tuning the center frequency of the oscillatory circuit is generated on the basis of an electric oscillating signal (RFout) produced by the oscillatory circuit itself. Said oscillating signal is used for generating a negative voltage with a clamp/voltage multiplier type circuit (15) and it is adjusted to a desired value with an adjustment circuit (14), in which the values of the components (R2) can be permanently adjusted suitable in the tuning stage. Alternatively, the adjustment circuit (14) may include an active component (Q1) which can have an effect on the value of the negative bias voltage (-Vcf) during the use of the oscillatory circuit.
REFERENCES:
patent: 4503402 (1985-03-01), Englund, Jr.
patent: 4570130 (1986-02-01), Grindel et al.
patent: 4713631 (1987-12-01), Enderby et al.
patent: 4881048 (1989-11-01), Auneau et al.
patent: 5159626 (1992-10-01), Baum et al.
patent: 5164685 (1992-11-01), Niemio
patent: 5357222 (1994-10-01), Hietala
patent: 5382922 (1995-01-01), Gersbach et al.
patent: 5446417 (1995-08-01), Korhonen et al.
patent: 5486866 (1996-01-01), Helfrich et al.
Grimm Siegfried H.
Nokia Mobile Phones Ltd.
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