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US 4,728,907 AGranted
Frequency/temperature compensated millimeter wave oscillator
AssigneeEaton Corporation
InventorLeonard D. Cohen
Life of this patent
Estimating the term…
Abstract
Frequency/temperature compensation of millimeter wave lumped active element oscillators is disclosed by use of a simple capacitive compensating element, and including printed circuit versions in which the temperature compensating capacitor is printed in-situ with the circuit elements.
Claims26
A frequency versus temperature stabilized oscillator operational in the millimeter wave range including frequencies greater than 30 GHz, comprising:
- a lumped element circuit including an active element with a negative resistance;
- a lumped element circuit in parallel with first mentioned active circuit;
- at least one of said circuits including a lumped element temperature compensating capacitor formed on material of dielectric constant less than about 15.
A frequency versus temperature stabilized oscillator operational in the millimeter wave range including frequencies greater than 30 GHz, comprising:
- a ground plane;
- a substrate on said ground plane and having a dielectric constant less than about 15;
- an active element mounted on a portion of said ground plane and having a negative resistance;
- a resonant circuit printed in-situ on said substrate and electrically in parallel with said active element;
- temperature compensating capacitor means printed in-situ on said substrate in parallel with at least one of said active element and said resonant circuit.
2 more elements
Dependencies are inferred from the claim text.