Power passing inductor capable of operation at frequencies higher than 900 MHz
AssigneeRegal Technologies Ltd.
InventorDonald W. Reddick
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Abstract
The invention is comprised of two inductors wound in series but in opposite directions around a ferrite core, a resistor being connected in parallel with one inductor, and a wire being looped through a ferrite bead and being wound around the other inductor. The invention allows a 60 Hz power signal to pass without excessively interfering with radio frequency signals in excess of 900 MHz and preferably on the order of 1 GHz. The invention is particularly useful in cable television systems, where a power signal and an RF signal are sinultaneously transmitted.
Claims8
A power passing device for passing a power signal without resulting in excessive loss or distortion of simultaneously transmitted radio frequency signals above 900 MHz and on the order of 1 GHz, comprising:
- (a) a core of ferrite material;
- (b) a first inductor wound around said core;
- (c) a second inductor wound around said core in series with said first inductor but in the opposite direction of said first inductor;
- (d) a resistor connected in parallel with said first inductor;
- (e) a ferrite bead for reducing unwanted resonances;
- (f) a wire having a first end and a second end, said wire being looped through said ferrite bead and being wound around said second inductor.
Dependencies are inferred from the claim text.