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US 12,615,323 B2Granted
Back cover and terminal
AssigneeHuawei Technologies Co., Ltd.
InventorHanLin Yueh
Life of this patent
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Abstract
A terminal includes a back cover and an antenna. The back cover includes a non-metallic plate body and a multi-frequency AMC structure. The multi-frequency AMC structure is attached to the inner surface of the non-metallic plate body, or the multi-frequency AMC structure is embedded into the non-metallic plate body. A middle part of the multi-frequency AMC structure has an opening, and the antenna is located on an inner side of the back cover and is disposed directly facing the opening. The multi-frequency AMC structure comprises a first AMC structure and a second AMC structure, a resonance frequency of the first AMC structure is a first resonance frequency, a resonance frequency of the second AMC structure is a second resonance frequency, and the first resonance frequency is lower than the second resonance frequency.
Claims20
A back cover configured to be applied to a terminal, the back cover comprising:
- a non-metallic plate body;
- and
- a multi-frequency artificial magnetic conductor (AMC) structure,
- wherein the multi-frequency AMC structure is attached to an inner surface of the non-metallic plate body or is embedded into the non-metallic plate body,
- wherein a middle part of the multi-frequency AMC structure has an opening,
- wherein the multi-frequency AMC structure comprises a plurality of sub-structures,
- wherein each sub-structure of the plurality of sub-structures comprises a first AMC structure having a first resonance frequency and a second AMC structure having a second resonance frequency,
- wherein the first AMC structure and the second AMC structure are located in a same plane parallel to a surface of the AMC structure,
- wherein the first resonance frequency is lower than the second resonance frequency,
- wherein an antenna of the terminal is configured to be located on an inner side of the back cover, and disposed directly facing the opening of the multi-frequency AMC structure of the back cover,
- wherein the antenna of the terminal is configured to form a projection area on the back cover, and
- wherein the multi-frequency AMC structure and the projection area are respectively provided with a first gap in a direction of a short side of the back cover and a second gap in a direction of a long side of the back cover, and sizes of the first gap and the second gap are in a range of 0 to 0.7 times an equivalent dielectric wavelength corresponding to the first resonance frequency.
9 more elements
A terminal, comprising:
- an antenna;
- and
- a back cover;
- wherein the back cover comprises a non-metallic plate body and a multi-frequency artificial magnetic conductor (AMC) structure,
- wherein the multi-frequency AMC structure is attached to an inner surface of the non-metallic plate body or is embedded into the non-metallic plate body,
- wherein a middle part of the multi-frequency AMC structure has an opening,
- wherein the multi-frequency AMC structure comprises a plurality of sub-structures,
- wherein each sub-structure of the plurality of sub-structures comprises a first AMC structure having a first resonance frequency and a second AMC structure having a second resonance frequency,
- wherein the first AMC structure and the second AMC structure are located in a same plane parallel to a surface of the AMC structure,
- wherein the first resonance frequency is lower than the second resonance frequency,
- wherein the antenna is located on an inner side of the back cover, and is disposed directly facing the opening of the multi-frequency AMC structure of the back cover,
- wherein the antenna is configured for millimeter-wave band operation,
- wherein the antenna forms a projection area on the back cover, and
- wherein the multi-frequency AMC structure and the projection area are respectively provided with a first gap in a direction of a short side of the back cover and a second gap in a direction of a long side of the back cover, and sizes of the first gap and the second gap are in a range of 0 to 0.7 times an equivalent dielectric wavelength corresponding to the first resonance frequency.
11 more elements
A method for operating a terminal comprising an antenna;
- and a back cover;
- wherein the back cover comprises a non-metallic plate body and a multi-frequency artificial magnetic conductor (AMC) structure, wherein the multi-frequency AMC structure is attached to an inner surface of the non-metallic plate body or is embedded into the non-metallic plate body, wherein a middle part of the multi-frequency AMC structure has an opening, wherein the multi-frequency AMC structure comprises a plurality of sub-structures, wherein each sub-structure of the plurality of sub-structures comprises a first AMC structure having a first resonance frequency and a second AMC structure having a second resonance frequency, wherein the first AMC structure and the second AMC structure are located in a same plane parallel to a surface of the AMC structure, wherein the first resonance frequency is lower than the second resonance frequency, wherein the antenna is located on an inner side of the back cover, and is disposed directly facing the opening of the multi-frequency AMC structure of the back cover, wherein the antenna is configured for millimeter-wave band operation, wherein the antenna forms a projection area on the back cover, and wherein the multi-frequency AMC structure and the projection area are respectively provided with a first gap in a direction of a short side of the back cover and a second gap in a direction of a long side of the back cover, and sizes of the first gap and the second gap are in a range of 0 to 0.7 times an equivalent dielectric wavelength corresponding to the first resonance frequency, the method comprising:
- receiving a millimeter-wave band radio signal using the antenna.
Dependencies are inferred from the claim text.