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US 6,897,704 B2Granted
Electronic isolator
AssigneeThunder Creative Technologies, Inc.
InventorsRobert D. Washburn, Robert F. McClanhan
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AssigneeThunder Creative Technologies, Inc.
InventorsRobert D. Washburn, Robert F. McClanhan
Estimating the term…
The present invention is an electronic isolator that provides low input to output insertion loss, high output to input insertion loss, and substantial asymmetric isolation between a source circuit and a load circuit. The invention actively reduces noise and reflected power appearing on the isolator output. In numerous embodiments, the invention operates in circuit applications from dc through millimeter wave. Multistage electronic isolator embodiments provide increased isolation and greater noise reduction. In other embodiments, the electronic isolator also removes noise appearing on its input. In another embodiment, the invention is configured for high power applications. This embodiment includes circuitry for redirecting power away from the load into resistors or other dissipative elements. In another embodiment, the electronic isolator is configured to remove signal distortion produced by one or more power amplifiers in the system.
An active electronic isolator between a source stage and a load stage, including at least one circuit path into which electrical noise is directed away from said source and said load stages, including configuring means for configuring said path to always appear as an infinite impedance to the output signal from said source stage, in which insertion loss of said electronic isolator is dependent upon the direction of signal and noise transmission through said electronic isolator, wherein said insertion loss in one direction is greater than in the other direction.
An active electronic isolator between a source stage and a load stage comprising:
Dependencies are inferred from the claim text.