Wireless energy transmission structure
View Patent ↗Disclosed is a wireless energy transmission structure which includes a disc part including a first conductor plate and a second conductor plate which are spaced to face each other and a dielectric material inserted between the first conductor plate and the second conductor plate, and generating an electric field between the first conductor plate and the second conductor plate; and a ring-shaped wire part one end of which is connected to the first conductor plate and the other end of which is connected to the second conductor plate, and having a meta structure in which a plurality of meta cells is repetitively arranged so as to induce a magnetic field using the electric field, so that the wireless energy transmission structure is reduced in size and is improved in transmission distance and transmission efficiency.
1. A wireless energy transmission structure, comprising:
a disc part comprising a first conductor plate and a second conductor plate which are spaced to face each other and a dielectric material inserted between the first conductor plate and the second conductor plate, and generating an electric field between the first conductor plate and the second conductor plate; and
a ring-shaped wire part one end of which is connected to the first conductor plate and the other end of which is connected to the second conductor plate, and having a meta structure in which a plurality of meta cells is repetitively arranged so as to induce a magnetic field using the electric field.
2. The wireless energy transmission structure as set forth in claim 1 , wherein the wire part comprises:
a ring-shaped substrate one end of which is connected to the first conductor plate and the other end of which is connected to the second conductor plate;
a horizontal type meta structure comprising a first meta structure in which a plurality of meta cells is repetitively formed along an inner peripheral portion of the substrate on one surface of the substrate, and a second meta structure spaced apart from the first meta structure on the same surface where the first meta structure is formed and having a plurality of meta cells which are repetitively formed along an outer peripheral portion of the substrate; and
a transmission line, which has a first terminal and a second terminal, is formed along the first meta structure and the second meta structure of the substrate between the first meta structure and the second meta structure, and supplies or receives power through the first terminal and the second terminal.
3. The wireless energy transmission structure as set forth in claim 2 , wherein the substrate is a single substrate.
4. The wireless energy transmission structure as set forth in claim 2 , wherein the substrate is a multilayer substrate.
5. The wireless energy transmission structure as set forth in claim 1 , wherein the wire part comprises:
a ring-shaped multilayer substrate one end of which is connected to the first conductor plate and the other end of which is connected to the second conductor plate, and including an uppermost substrate and a lowermost substrate so that at least two dielectric substrates are stacked;
a vertical type meta structure comprising a first meta structure formed on an upper surface of the uppermost substrate of the multilayer substrate and having a plurality of meta cells which are repetitively formed, and a second meta structure formed on a lower surface of the lowermost substrate of the multilayer substrate and having a plurality of meta cells which are repetitively formed;
a transmission line, which has a first terminal and a second terminal, is interposed between the uppermost substrate and the lowermost substrate and formed along the first meta structure and the second meta structure of the substrate, and supplies or receives power through the first terminal and the second terminal; and
a plurality of via holes formed to perpendicularly pass through the multilayer substrate so as to electrically connect the plurality of meta cells and the transmission line.
6. The wireless energy transmission structure as set forth in claim 5 , wherein when a width of the transmission line is equal to or larger than a width of the first meta structure and the second meta structure, series resonance is obtained at a resonance frequency.
7. The wireless energy transmission structure as set forth in claim 5 , wherein when a width of the transmission line is smaller than a width of the first meta structure and the second meta structure, parallel resonance is obtained at a resonance frequency.
8. The wireless energy transmission structure as set forth in claim 5 , wherein the plurality of via holes comprises:
a plurality of first via holes formed to perpendicularly pass through the multilayer substrate so as to electrically connect the plurality of meta cells of the first meta structure to the transmission line; and
a plurality of second via holes formed to perpendicularly pass through the multilayer substrate so as to electrically connect the plurality of meta cells of the second meta structure to the transmission line.