US6147650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna device and radio device comprising the same
Assignee: Murata Manufacturing Co Ltd
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Filing: 1999-02-18
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Granted: 2000-11-14
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Expires: 2019-02-18
Abstract
Abstract The invention provides An antenna device, comprising: a substrate made of an insulation material and including a first major surface and a second major surface face; a ground electrode provided substantially on the whole of the first major surface of said substrate; and an inverted F-shape antenna and a microstrip antenna respectively provided on the surface of the substrate. An open end of a radiation electrode of the microstrip antenna and a feeding electrode of the inverted F-shape antenna are capacitively coupled to each other. A first direction through the open end and ground end of the radiation electrode of the inverted F-shape antenna is substantially perpendicular to a second direction through the open end and ground end of the radiation electrode of the microstrip antenna. By the above arrangement, a mutual interference hardly occurs between the two antennas.
Inventors
- 👤 Kazunari Kawahata
- 👤 Shigekazu Itoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:06
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/005; H01Q5/00; H01Q5/30; H01Q5/378; H01Q9/00; H01Q9/04; H01Q9/0407; H01Q9/0421
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
220 words
An antenna device, comprising: a substrate made of an insulation material and including a first major surface and a second major surface face; a ground electrode provided substantially on the whole of the first major surface of said substrate; an inverted F-shape antenna, comprising: a first radiation electrode disposed on the second major surface of said substrate and having a first open end and a first ground end; a first connecting electrode connecting said first ground end and said ground electrode; and a feeding electrode provided in the vicinity of the first ground end of said first radiation electrode and having one end connected to said first radiation electrode; a microstrip antenna, comprising: a second radiation electrode disposed on the second main surface of said substrate and having one open second end and a second ground end; and a second connecting electrode connecting said second ground end and said ground electrode; the second open end of said second radiation electrode of said microstrip antenna and said feeding electrode of said inverted F-shape antenna being capacitively coupled to each other; and a first direction through the first open end and the first ground end of said first radiation electrode being substantially perpendicular to a second direction through the second open end and the second ground end of said second radiation electrode.
Claim 2
Dependent Claim
220 words
An antenna device, comprising: a substrate made of an insulation material and including a first major surface and a second major surface face; a ground electrode provided substantially on the whole of the first major surface of said substrate; an inverted F-shape antenna, comprising: a first radiation electrode disposed on the second major surface of said substrate and having a first open end and a first ground end; a first connecting electrode connecting said first ground end and said ground electrode; and a feeding electrode provided in the vicinity of the first ground end of said first radiation electrode and having one end connected to said first radiation electrode; a microstrip antenna, comprising: a second radiation electrode disposed on the second main surface of said substrate and having one open second end and a second ground end; and a second connecting electrode connecting said second ground end and said ground electrode; the second open end of said second radiation electrode of said microstrip antenna and said feeding electrode of said inverted F-shape antenna being capacitively coupled to each other; and a first direction through the first open end and the first ground end of said first radiation electrode being substantially perpendicular to a second direction through the second open end and the second ground end of said second radiation electrode.
Claim 3
Dependent Claim
235 words
A radio device comprising an antenna device and a circuit connected to the antenna device; said antenna device comprising: a substrate made of an insulation material and including a first major surface and a second major surface face; a ground electrode provided substantially on the whole of the first major surface of said substrate; an inverted F-shape antenna, comprising: a first radiation electrode disposed on the second major surface of said substrate and having a first open end and a first ground end; a first connecting electrode connecting said first ground end and said ground electrode; and a feeding electrode provided in the vicinity of the first ground end of said first radiation electrode and having one end connected to said first radiation electrode; a microstrip antenna, comprising: a second radiation electrode disposed on the second main surface of said substrate and having one open second end and a second ground end; and a second connecting electrode connecting said second ground end and said ground electrode; the second open end of said second radiation electrode of said microstrip antenna and said feeding electrode of said inverted F-shape antenna being capacitively coupled to each other; and a first direction through the first open end and the first ground end of said first radiation electrode being substantially perpendicular to a second direction through the second open end and the second ground end of said second radiation electrode.
Claim 4
Dependent Claim
235 words
A radio device comprising an antenna device and a circuit connected to the antenna device; said antenna device comprising: a substrate made of an insulation material and including a first major surface and a second major surface face; a ground electrode provided substantially on the whole of the first major surface of said substrate; an inverted F-shape antenna, comprising: a first radiation electrode disposed on the second major surface of said substrate and having a first open end and a first ground end; a first connecting electrode connecting said first ground end and said ground electrode; and a feeding electrode provided in the vicinity of the first ground end of said first radiation electrode and having one end connected to said first radiation electrode; a microstrip antenna, comprising: a second radiation electrode disposed on the second main surface of said substrate and having one open second end and a second ground end; and a second connecting electrode connecting said second ground end and said ground electrode; the second open end of said second radiation electrode of said microstrip antenna and said feeding electrode of said inverted F-shape antenna being capacitively coupled to each other; and a first direction through the first open end and the first ground end of said first radiation electrode being substantially perpendicular to a second direction through the second open end and the second ground end of said second radiation electrode.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-11-14 | 2004-05-15 | 2004-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-11-14 | 2008-05-15 | 2008-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-11-14 | 2012-05-15 | 2012-11-14 | $7700.00 | Window Closed / Lapsed |