R.F. energy collection circuit for wireless devices
First Claim
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1. An RF energy collection circuit used to harvest ambient energy for a wireless device or appliance, comprising a low-loss RF front-end containing one or more RF filtering stages formed from a broadband dipole antenna embedded in amorphous silica glass ceramic;
- wherein the one or more RF filtering stages have one or more selective-frequency pass bands formed by folding the anus of the dipole antenna to insert;
capacitive loads in series or in parallel at locations where the arms of the dipole antenna are folded to align current vectors in anti-parallel directions, and,inductive loads in series or in parallel where the arms of the dipole antenna are folded to align current vectors in parallel directions, such that,the one or more selective-frequency pass bands of the one or more RF filtering stages are resonant at primary frequency bands used for global civilian communications.
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Abstract
An R.F. energy collection circuit, provides a low-loss R.F. front end tuned to minimize lost power in R.F. bands commonly used for communications for passing substantially coherent R.F. signals received therefrom, a rectifier circuit coupled to receive coherent R.F. energy from the front end, and an energy storage circuit coupled to receive energy from the rectifier circuit.
237 Citations
10 Claims
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1. An RF energy collection circuit used to harvest ambient energy for a wireless device or appliance, comprising a low-loss RF front-end containing one or more RF filtering stages formed from a broadband dipole antenna embedded in amorphous silica glass ceramic;
- wherein the one or more RF filtering stages have one or more selective-frequency pass bands formed by folding the anus of the dipole antenna to insert;
capacitive loads in series or in parallel at locations where the arms of the dipole antenna are folded to align current vectors in anti-parallel directions, and, inductive loads in series or in parallel where the arms of the dipole antenna are folded to align current vectors in parallel directions, such that, the one or more selective-frequency pass bands of the one or more RF filtering stages are resonant at primary frequency bands used for global civilian communications. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- wherein the one or more RF filtering stages have one or more selective-frequency pass bands formed by folding the anus of the dipole antenna to insert;
Specification