US5760746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface mounting antenna and communication apparatus using the same antenna
Assignee: Murata Manufacturing Co Ltd
•
Filing: 1996-09-20
•
Granted: 1998-06-02
•
Expires: 2016-09-20
Abstract
Abstract A surface mounting antenna in which non-contact excitation can be achieved via a capacitor, and easy impedance matching can be provided even when the antenna is downsized. A communication apparatus loaded with the above antenna is also disclosed. A radiation electrode is disposed on the obverse surface of a substrate. A ground electrode is formed on substantially the overall area of the reverse surface of the substrate. The radiation electrode is connected at one end to the ground electrode via a first end surface of the substrate, and extends at the other end to the portion adjacent to a second end surface opposedly facing the first end surface so as to form a free end. An excitation electrode is disposed to face the forward end of the free end of the radiation substrate across a gap g and to extend from the obverse surface of the substrate to the reverse surface via the second end surface of the substrate.
Inventors
- 👤 Kazunari Kawahata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:43
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/36; H01Q1/38; H01Q9/00; H01Q9/04; H01Q9/0407; H01Q9/0421; H01Q9/045; H01Q9/0457
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
103 words
A surface mounting antenna comprising: a parallelopiped substrate having first and second opposed main surfaces and four side surfaces each connecting the main surfaces; a ground electrode disposed on substantially the overall area of the first main surface of said substrate; a stripline radiation electrode having a free end and being disposed at least on the second main surface of said substrate and connected to said ground electrode; and an excitation electrode disposed on a surface of said substrate and having a forward end; a gap formed between the free end of said radiation electrode and the forward end of said excitation electrode.
Claim 2
Dependent Claim
103 words
A surface mounting antenna comprising: a parallelopiped substrate having first and second opposed main surfaces and four side surfaces each connecting the main surfaces; a ground electrode disposed on substantially the overall area of the first main surface of said substrate; a stripline radiation electrode having a free end and being disposed at least on the second main surface of said substrate and connected to said ground electrode; and an excitation electrode disposed on a surface of said substrate and having a forward end; a gap formed between the free end of said radiation electrode and the forward end of said excitation electrode.
Claim 3
Dependent Claim
18 words
A surface mounting antenna according to claim 1, wherein the gap is disposed on the second main surface.
Claim 4
Dependent Claim
20 words
A surface mounting antenna according to claim 1, wherein the gap is disposed on a side surface of the substrate.
Claim 5
Dependent Claim
29 words
A surface mounting antenna according to claim 1, wherein said radiation electrode is at least partly bent in the form of one of a U-shape and a meandering shape.
Claim 6
Dependent Claim
137 words
A surface mounting antenna comprising: a parallelopiped substrate having first and second opposed main surfaces and four side surfaces each connecting the main surfaces; a ground electrode disposed on substantially the overall area of the first main surface of said substrate; a stripline radiation electrode disposed on the second main surface of said substrate, and positioned at a first end adjacent to an edge of said substrate so as to form a free end and connected at a second end to said ground electrode; and an excitation electrode disposed near said edge of said substrate, facing said free end of said radiation electrode across a gap, and being disposed on a side surface of said substrate; wherein said excitation electrode and said radiation electrode are electromagnetically coupled to each other through a capacitor generated in said gap.
Claim 7
Dependent Claim
137 words
A surface mounting antenna comprising: a parallelopiped substrate having first and second opposed main surfaces and four side surfaces each connecting the main surfaces; a ground electrode disposed on substantially the overall area of the first main surface of said substrate; a stripline radiation electrode disposed on the second main surface of said substrate, and positioned at a first end adjacent to an edge of said substrate so as to form a free end and connected at a second end to said ground electrode; and an excitation electrode disposed near said edge of said substrate, facing said free end of said radiation electrode across a gap, and being disposed on a side surface of said substrate; wherein said excitation electrode and said radiation electrode are electromagnetically coupled to each other through a capacitor generated in said gap.
Claim 8
Dependent Claim
30 words
A surface mounting antenna according to claim 5, wherein the side surface comprises one of a first side surface and a second side surface opposedly facing the first side surface.
Claim 9
Dependent Claim
29 words
A surface mounting antenna according to claim 5, wherein said radiation electrode is at least partly bent in the form of one of a U-shape and a meandering shape.
Claim 10
Dependent Claim
18 words
A surface mounting antenna according to claim 5, wherein the gap is disposed on said second main surface.
Claim 11
Dependent Claim
17 words
A surface mounting antenna according to claim 5, wherein the gap is disposed on a side surface.
Claim 12
Dependent Claim
126 words
A surface mounting antenna comprising: a parallelopiped substrate having first and second opposed main surfaces and four side surfaces each connecting the main surfaces; a ground electrode disposed on substantially the overall area of the first main surface of said substrate; a stripline radiation electrode disposed on the second main surface of said substrate and extending at a first end to a first side surface of said substrate to form a free end and being connected at a second end to said ground electrode; and an excitation electrode disposed on said first side surface, facing said free end of said radiation electrode across a gap; wherein said excitation electrode and said radiation electrode are electromagnetically coupled to each other through a capacitor generated in said gap.
Claim 13
Dependent Claim
126 words
A surface mounting antenna comprising: a parallelopiped substrate having first and second opposed main surfaces and four side surfaces each connecting the main surfaces; a ground electrode disposed on substantially the overall area of the first main surface of said substrate; a stripline radiation electrode disposed on the second main surface of said substrate and extending at a first end to a first side surface of said substrate to form a free end and being connected at a second end to said ground electrode; and an excitation electrode disposed on said first side surface, facing said free end of said radiation electrode across a gap; wherein said excitation electrode and said radiation electrode are electromagnetically coupled to each other through a capacitor generated in said gap.
Claim 14
Dependent Claim
29 words
A surface mounting antenna according to claim 10, wherein said radiation electrode is at least partly bent in the form of one of a U-shape and a meandering shape.
Claim 15
Dependent Claim
18 words
A surface mounting antenna according to claim 10, wherein the gap is disposed on said first side surface.
Claim 16
Dependent Claim
111 words
A communication apparatus provided with a surface mounting antenna, the antenna comprising: a parallelopiped substrate having first and second opposed main surfaces and four side surfaces each connecting the main surfaces; a ground electrode disposed on substantially the overall area of the first main surface of said substrate; a stripline radiation electrode having a free end and being disposed at least on the second main surface of said substrate and connected to said ground electrode; and an excitation electrode disposed on a side surface of said substrate and having a forward end; a gap formed between the free end of said radiation electrode and the forward end of said excitation electrode.
Claim 17
Dependent Claim
111 words
A communication apparatus provided with a surface mounting antenna, the antenna comprising: a parallelopiped substrate having first and second opposed main surfaces and four side surfaces each connecting the main surfaces; a ground electrode disposed on substantially the overall area of the first main surface of said substrate; a stripline radiation electrode having a free end and being disposed at least on the second main surface of said substrate and connected to said ground electrode; and an excitation electrode disposed on a side surface of said substrate and having a forward end; a gap formed between the free end of said radiation electrode and the forward end of said excitation electrode.
Claim 18
Dependent Claim
16 words
The apparatus according to claim 13, wherein the gap is disposed on the second main surface.
Claim 19
Dependent Claim
18 words
The apparatus according to claim 13, wherein the gap is disposed on a side surface of the substrate.
Claim 20
Dependent Claim
27 words
The apparatus according to claim 13, wherein said radiation electrode is at least partly bent in the form of one of a U-shape and a meandering shape.
Claim 21
Dependent Claim
144 words
A communication apparatus provided with a surface mounting antenna, the antenna comprising: a parallelopiped substrate having first and second opposed main surfaces and four side surfaces each connecting the main surfaces; a ground electrode disposed on substantially the overall area of the first main surface of said substrate; a stripline radiation electrode disposed on the second main surface of said substrate, and positioned at a first end adjacent to an edge of said substrate so as to form a free end and connected at a second end to said ground electrode; and an excitation electrode disposed near said edge of said substrate, facing said free end of said radiation electrode across a gap, and being guided to a side surface of said substrate; wherein said excitation electrode and said radiation electrode are electromagnetically coupled to each other through a capacitor generated in said gap.
Claim 22
Dependent Claim
144 words
A communication apparatus provided with a surface mounting antenna, the antenna comprising: a parallelopiped substrate having first and second opposed main surfaces and four side surfaces each connecting the main surfaces; a ground electrode disposed on substantially the overall area of the first main surface of said substrate; a stripline radiation electrode disposed on the second main surface of said substrate, and positioned at a first end adjacent to an edge of said substrate so as to form a free end and connected at a second end to said ground electrode; and an excitation electrode disposed near said edge of said substrate, facing said free end of said radiation electrode across a gap, and being guided to a side surface of said substrate; wherein said excitation electrode and said radiation electrode are electromagnetically coupled to each other through a capacitor generated in said gap.
Claim 23
Dependent Claim
28 words
The apparatus according to claim 17, wherein the end surface comprises one of a first end surface and a second end surface opposedly facing the first side surface.
Claim 24
Dependent Claim
27 words
The apparatus according to claim 17, wherein said radiation electrode is at least partly bent in the form of one of a U-shape and a meandering shape.
Claim 25
Dependent Claim
16 words
The apparatus according to claim 17, wherein the gap is disposed on said second main surface.
Claim 26
Dependent Claim
15 words
The apparatus according to claim 17, wherein the gap is disposed on an end surface.
Claim 27
Dependent Claim
133 words
A communication apparatus loaded with a surface mounting antenna, the antenna comprising: a parallelopiped substrate having first and second opposed main surfaces and four side surfaces each connecting the main surfaces; a ground electrode disposed on substantially the overall area of the first main surface of said substrate; a stripline radiation electrode disposed on the second main surface of said substrate and extending at a first end to a first side surface of said substrate to form a free end and being connected at a second end to said ground electrode; and an excitation electrode disposed on said first side surfaces facing said free end of said radiation electrode across a gap; wherein said excitation electrode and said radiation electrode are electromagnetically coupled to each other through a capacitor generated in said gap.
Claim 28
Dependent Claim
133 words
A communication apparatus loaded with a surface mounting antenna, the antenna comprising: a parallelopiped substrate having first and second opposed main surfaces and four side surfaces each connecting the main surfaces; a ground electrode disposed on substantially the overall area of the first main surface of said substrate; a stripline radiation electrode disposed on the second main surface of said substrate and extending at a first end to a first side surface of said substrate to form a free end and being connected at a second end to said ground electrode; and an excitation electrode disposed on said first side surfaces facing said free end of said radiation electrode across a gap; wherein said excitation electrode and said radiation electrode are electromagnetically coupled to each other through a capacitor generated in said gap.
Claim 29
Dependent Claim
27 words
The apparatus according to claim 22, wherein said radiation electrode is at least partly bent in the form of one of a U-shape and a meandering shape.
Claim 30
Dependent Claim
16 words
The apparatus according to claim 22, wherein the gap is disposed on said first side surface.
Claim 31
Dependent Claim
16 words
The apparatus according to claim 22, wherein the gap is disposed on said second main surface.
References Cited (Backward Citations)
EP0332139A2
Cited
EP0383292A2
Cited
US5455596A
Cited
EP0621653A2
Cited
US5442366A
Cited
EP0637094A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-06-01 | 2001-12-01 | 2002-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-01 | 2005-12-01 | 2006-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-01 | 2009-12-01 | 2010-06-02 | $7700.00 | Window Closed / Lapsed |