Cover accessory including electromagnetic wave suppression function for wireless communication device
AssigneeElectronics and Telecommunications Research Institute
InventorsDong-Uk Sim, Sang il Kwak, Jong Hwa Kwon
Life of this patent
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Abstract
Provided is a cover accessory for a wireless communication device, including an electromagnetic suppressing pattern layer on a surface adjoining at least one surface on which an electromagnetic wave is irradiated from the wireless communication device, wherein the electromagnetic suppressing pattern layer includes a first dielectric layer and a frequency selective surface (FSS) pattern with a unit cell having electromagnetic surface resistance periodically repeated thereon, and the FSS pattern is provided by etching the first dielectric layer to inject an FSS pattern material or by printing the FSS pattern material on the first dielectric layer.
Claims17
A cover accessory for a wireless communication device, the cover accessory comprising:
- an electromagnetic suppressing pattern layer on a surface adjoining at least one surface on which an electromagnetic wave is irradiated from the wireless communication device,
- wherein the electromagnetic suppressing pattern layer comprises a first dielectric layer and a frequency selective surface (FSS) pattern with a unit cell having electromagnetic surface resistance periodically repeated thereon, and the FSS pattern is provided by etching the first dielectric layer to inject an FSS pattern material or by printing the FSS pattern material on the first dielectric layer, and
- wherein the FSS pattern is configured with the FSS pattern material having the electromagnetic surface resistance such that reflection of an incident electromagnetic wave and transmission of the incident electromagnetic wave out of the cover accessory coexist over a band of frequencies.
A cover accessory for a wireless communication device, the cover accessory comprising:
- a first cover detachably coupled to a rear surface of the wireless communication device;
- a second cover configured to extend from the first cover and cover a display area provided on a front surface of the wireless communication device;
- and
- an electromagnetic suppressing pattern layer on one surface of each of the first and second covers,
- wherein the electromagnetic suppressing pattern layer comprises a first dielectric layer and a frequency selective surface (FSS) pattern with a unit cell having electromagnetic surface resistance periodically repeated thereon, and the FSS pattern is provided by etching the first dielectric layer to inject an FSS pattern material or by printing the FSS pattern material on the first dielectric layer, and
- wherein the FSS pattern is configured with the FSS pattern material having the electromagnetic surface resistance such that reflection of an incident electromagnetic wave and transmission of the incident electromagnetic wave out of the cover accessory coexist over a band of frequencies.
Dependencies are inferred from the claim text.