Surface-mountable antenna unit
AssigneeMurata Manufacturing Co., Ltd.
InventorsTeruhisa Tsuru, Hisatake Okamura, Harufumi Mandai, Mitsuhide Kato, Ken Tonegawa
Life of this patent
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Abstract
A surface-mountable antenna unit including a dielectric substrate having a rectangular plane shape which is provided on a side surface and/or a bottom surface thereof with a ground electrode, and a radiator, provided with a radiating part having a substantially rectangular plane shape, which is fixed to the dielectric substrate so that the radiator is opposed to a top surface of the dielectric substrate, with a feed part provided on a side surface of a laminate which is formed by the dielectric substrate and the radiator.
Claims47
A surface-mountable antenna unit comprising:
- a dielectric substrate having a top surface, a substantially flat bottom surface for surface-mounting, and side surfaces;
- a ground electrode being formed on at least one of a side surface and a bottom surface of said dielectric substrate;
- a radiator, having a major surface and consisting of a material having low conductor loss, being fixed to said dielectric substrate so that its major surface is opposed to the top surface of said dielectric substrate, to thereby form a laminate of said dielectric substrate and said radiator;
- and
- a feed part being provided at least on one of a side surface and a bottom surface of said laminate formed by said dielectric substrate and said radiator
- wherein said radiator comprises a radiating part having said major surface, and at least one fixed part extending from at least one edge of said radiating part toward said dielectric substrate,
- said at least one fixed part being fixed to said side surface of said dielectric substrate, thereby fixing said radiator to said dielectric substrate, and
- further comprising a feed terminal and a ground terminal being integrally formed on said at least one fixed part of said radiator.
A surface-mountable antenna unit comprising:
- a dielectric substrate having a top surfacer a bottom surface and side surfaces;
- a ground electrode being formed on at least one of a side surface and a bottom surface of said dielectric substrate;
- a radiator, having a major surface and consisting of a material having low conductor loss, being fixed to said dielectric substrate so that its major surface is opposed to the top surface of said dielectric substrate;
- and
- a feed part being provided at least on one of a side surface and a bottom surface of a laminate formed by said dielectric substrate and said radiator;
- further comprising a shield electrode being formed on said dielectric substrate,
- said shield electrode being electrically connected to said ground electrode, and
- said radiator has a radiating part and an annular side wall part extending from an edge of said radiating part toward said dielectric substrate, a flange part being formed on a forward end of said annular side wall part,
- said flange part being electrically connected to and mechanically bonded with said shield electrode, thereby defining a space of a prescribed thickness between said radiating part and said dielectric substrate.
Dependencies are inferred from the claim text.