Battery-free electromagnetic leakage detector
First Claim
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1. A battery-free electromagnetic leakage detector comprising:
- a substrate;
an antenna;
a filter circuit electrically connected with the antenna, wherein the filter circuit is a low pass filter circuit or a band pass filter circuit and composed of an inductor and a first capacitor, the inductor being made of an elongated cooper foil having a predetermined width, the first capacitor being made of an elongated copper foil having a predetermined width and curved in the shape of an L;
a clamp circuit electrically connected with the filter circuit; and
an indicating member electrically connected with the clamp circuit.
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Abstract
A battery-free electromagnetic leakage detector includes a substrate, an antenna, a filter circuit electrically connected with the antenna, a clamp circuit electrically connected with the filter circuit, and an indicating member electrically connected with the clamp circuit. Accordingly, the battery-free electromagnetic leakage detector is structurally simple and compact and can detect electromagnetic waves and display the detection without connection with any external power source.
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Citations
8 Claims
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1. A battery-free electromagnetic leakage detector comprising:
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a substrate; an antenna; a filter circuit electrically connected with the antenna, wherein the filter circuit is a low pass filter circuit or a band pass filter circuit and composed of an inductor and a first capacitor, the inductor being made of an elongated cooper foil having a predetermined width, the first capacitor being made of an elongated copper foil having a predetermined width and curved in the shape of an L; a clamp circuit electrically connected with the filter circuit; and an indicating member electrically connected with the clamp circuit. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A battery-free electromagnetic leakage detector comprising:
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a substrate; an antenna; a filter circuit electrically connected with the antenna; a clamp circuit electrically connected with the filter circuit; an indicating member electrically connected with the clamp circuit; and wherein the antenna is a plate-like planar antenna and located on one of two opposite sides of the substrate;
the filter circuit, the clamp circuit, and the indicating member are located on the other side of the substrate and opposite to the antenna. - View Dependent Claims (8)
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Specification