Surface-mount type antenna and antenna apparatus

• US 20040125032A1
• Filed: 12/12/2003
• Published: 07/01/2004
• Est. Priority Date: 12/13/2002
• Status: Active Grant

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: Murakawa, Shunichi, Ikuta, Takanori, Sato, Akinori, Watada, Kazuo
• Granted Patent: US 7,026,994 B2
• Time in Patent Office: Days
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/12 Supports; Mounting means
• CPC Class Codes: H01Q 1/2283 mounted in or on the surface of a semiconductor substrate as a chip-type antenna or integrated with other components into an IC package
• CPC Class Codes: H01Q 9/0407 Substantially flat resonant element parallel to ground plane, e.g. patch antenna dipole H01Q9/285; monopole H01Q9/40
• CPC Class Codes: H01Q 9/0457 electromagnetically coupled to the feed line

Abstract

An surface-mount type antenna includes a rectangular parallelepiped base body, a feeding terminal formed at one-end-side part of one side surface thereof, and a radiating electrode, to one end of which is connected the feeding terminal, disposed such that its other end is routed from one-end-side part of one side surface, through one-end-side part of one principal surface, to another-end-side part of one principal surface, and extends from the other-end-side part to the one end side part parallelly with a ridge of the base body, and is eventually formed into an open end. An antenna apparatus is constructed by mounting the surface-mount type antenna on a mounting substrate having a feeding electrode and a ground conductor layer with a linear side edge located near the feeding electrode, with the ridge of the base body arranged parallel to the linear side edge of the ground conductor layer.

Claims

1. A surface-mount type antenna comprising:

a base body made of a rectangular parallelepiped dielectric or magnetic material;

a feeding terminal formed at one end of one side surface of the base body; and

a radiating electrode, to one end of which is connected the feeding terminal, disposed such that its other end is routed from one end side part of one side surface, through one end side part of one principal surface of the base body, to another end side part of one principal surface, or another end side part of one side surface, or another end side part of another principal surface, and extends farther from the other end side part to one end side part so as to be parallel to a ridge of the base body, and is eventually formed into an open end.

2. The surface-mount type antenna of claim 1, wherein a through hole or a groove is formed in the base body made of a rectangular parallelepiped dielectric or magnetic material, the through hole being drilled all the way through from one side surface to another side surface, or from one end face to another end face, or from one principal surface to the other principal surface of the base body, and the groove being formed on the other principal surface of the base body so as to penetrate all the way through from one end face to the other end face, or from one side surface to the other side surface.

3. The surface-mount type antenna of claim 1, wherein an auxiliary terminal for surface mounting is formed on the other principal surface of the base body.

4. The surface-mount type antenna of claim 2, wherein an auxiliary terminal for surface mounting is formed on the other principal surface of the base body.

5. The surface-mount type antenna of claim 1, wherein the rectangular parallelepiped base body is chamfered at its corner and ridge to produce a curved or flat chamfer.

6. The surface-mount type antenna of claim 1, wherein the base body is made of a dielectric material having a relative dielectric constant μ

r which is kept within a range from 3 to 30.

7. The surface-mount type antenna of claim 1, wherein the base body is made of a magnetic material having a relative magnetic permeability μ

r which is kept within a range from 1 to 8.

8. An antenna apparatus comprising:

a mounting substrate having formed thereon a feeding electrode and a ground conductor layer with a linear side edge located in a vicinity of the feeding electrode; and

the surface-mount type antenna of claim 1,

wherein the antenna apparatus is constructed by mounting the surface-mount type antenna on the mounting substrate, with the other principal surface of the base body arranged on a top surface of the mounting substrate, with the ridge of the base body arranged parallel to the linear side edge of the ground conductor layer, and with the feeding terminal connected to the feeding electrode.

9. An antenna apparatus comprising:

a mounting substrate having formed thereon a feeding electrode and a ground conductor layer with a linear side edge located in a vicinity of the feeding electrode; and

the surface-mount type antenna of claim 2,

wherein the antenna apparatus is constructed by mounting the surface-mount type antenna on the mounting substrate, with the other principal surface of the base body arranged on a top surface of the mounting substrate, with the ridge of the base body arranged parallel to the linear side edge of the ground conductor layer, and with the feeding terminal connected to the feeding electrode.

10. An antenna apparatus comprising:

a mounting substrate having formed thereon a feeding electrode and a ground conductor layer with a linear side edge located in a vicinity of the feeding electrode; and

the surface-mount type antenna of claim 3,

wherein the antenna apparatus is constructed by mounting the surface-mount type antenna on the mounting substrate, with the other principal surface of the base body arranged on a top surface of the mounting substrate, with the ridge of the base body arranged parallel to the linear side edge of the ground conductor layer, and with the feeding terminal connected to the feeding electrode.

11. An antenna apparatus comprising:

a mounting substrate having formed thereon a feeding electrode and a ground conductor layer with a linear side edge located in a vicinity of the feeding electrode; and

the surface-mount type antenna of claim 4,

wherein the antenna apparatus is constructed by mounting the surface-mount type antenna on the mounting substrate, with the other principal surface of the base body arranged on a top surface of the mounting substrate, with the ridge of the base body arranged parallel to the linear side edge of the ground conductor layer, and with the feeding terminal connected to the feeding electrode.