R.F. Oscillator arrangement

Details R.F. Oscillator arrangement R.F. Oscillator arrangement

1984-05-25

1986-02-04

LaRoche, Eugene R.

Oscillators

Frequency stabilization

Temperature or current responsive means in circuit

331 70, 331107R, H03L 102

Patent

active

045688915

ABSTRACT:
In an R.F. oscillator arrangement comprising a diode (D), such as a TRAPATT diode, operable to produce pulses of R.F. energy when d.c. pulses (P) above a critical level (I.sub.k) are applied to the diode (D), the frequency of oscillation is markedly dependent on the temperature of the diode (D). To reduce variations of the frequency over a wide operating range of ambient temperatures a direct current (I.sub.a) below the critical level (I.sub.k) is passed through the diode (D) to heat it, the heating current (I.sub.a) being controlled by measuring the temperature of a heat-sink (N) on which the diode (D) is mounted and which is substantially at ambient temperature, or by measuring the oscillating frequency.

REFERENCES:
patent: 4380745 (1983-04-01), Barlow et al.
patent: 4445096 (1984-04-01), Lee et al.
Steel, B. et al., "Piecewise Linear Analog Temperature Compensation Scheme Using a Highly Interactive Electrically Programmable Read-Only Memory", Motorola Technical Disclosure Bulletin, v. 1, n. 1 (Aug. 80) pp. 29-30.

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