Patent US6351239B1 successfully refreshed from Google Patents.
US6351239B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic device in which integrated antenna and filter both have balanced terminals
Assignee: NGK Insulators Ltd
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Filing: 2000-05-16
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Granted: 2002-02-26
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Expires: 2020-05-16
Abstract
Abstract An antenna device is provided with a dielectric substrate comprising a large number of stacked dielectric layers and having at least an input/output terminal and a ground electrode formed on its outer circumferential surface. A plurality of ½ wavelength resonator elements of the both ends-open type are arranged in parallel to one another in the dielectric substrate respectively to construct a filter section. An antenna section is formed and constructed on the surface of the dielectric substrate. Two input/output electrodes are formed in the dielectric substrate, which are arranged at positions of point symmetry with respect to a center in the length direction of at least the resonator element disposed on the output side, of the plurality of ½ wavelength resonator elements. The two input/output electrodes are connected to balanced input/output terminals of the antenna section respectively.
Inventors
- 👤 Kazuyuki Mizuno
- 👤 Takami Hirai
- 👤 Yasuhiko Mizutani
- 👤 Hiroyuki Arai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:15
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/201; H01P1/203; H01P1/20327; H01P1/20336; H01P1/20345; H01Q; H01Q1/00; H01Q1/36; H01Q1/38; H01Q23/00; H01Q7/00; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/28; H01Q9/285
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
44 words
An antenna device comprising: an antenna section comprising an antenna having a balanced input/output including balanced antenna terminals; and a filter section comprising a filter having a balanced input/output portion including filter terminals, wherein said input/output portion is electrically connected to said antenna terminals.
Claim 2
Dependent Claim
44 words
An antenna device comprising: an antenna section comprising an antenna having a balanced input/output including balanced antenna terminals; and a filter section comprising a filter having a balanced input/output portion including filter terminals, wherein said input/output portion is electrically connected to said antenna terminals.
Claim 3
Dependent Claim
26 words
The antenna device according to claim 1 , further comprising a ground electrode for constructing a capacitance together with an open end of said antenna section.
Claim 4
Dependent Claim
21 words
The antenna device according to claim 1 , wherein said antenna section and said filter section are integrated into one unit.
Claim 5
Dependent Claim
76 words
The antenna device according to claim 3 , including: a dielectric substrate which includes a large number of stacked dielectric layers and which has at least an input/output terminal and a ground electrode formed on its outer circumferential surface, wherein: said filter section includes a plurality of ½ wavelength resonators of a both ends-open type arranged in parallel to one another in said dielectric substrate respectively; and said antenna section is formed on said dielectric substrate.
Claim 6
Dependent Claim
31 words
The antenna device according to claim 4 , wherein said antenna section and said filter section are formed in regions which are two-dimensionally separated from each other on said dielectric substrate.
Claim 7
Dependent Claim
75 words
The antenna device according to claim 4 , wherein: said filter terminals include two input/output electrodes, which are arranged at positions of linear symmetry with respect to a center in a length direction of said ½ wavelength resonator disposed on a side of said antenna section, of said plurality of ½ wavelength resonators, and are provided in said dielectric substrate; and said two input/output electrodes are connected to said balanced terminals of said antenna section.
Claim 8
Dependent Claim
30 words
The antenna device according to claim 6 , wherein said two input/output electrodes are capacitively coupled to said ½ wavelength resonator disposed on said side of said antenna section respectively.
Claim 9
Dependent Claim
30 words
The antenna device according to claim 6 , wherein said two input/output electrodes are directly connected to said ½ wavelength resonator disposed on said side of said antenna section respectively.
Claim 10
Dependent Claim
46 words
The antenna device according to claim 4 , wherein said filter section includes a coupling-adjusting electrode which is overlapped with said adjoining ½ wavelength resonators with said dielectric layer interposed therebetween in said dielectric substrate and which effects capacitive coupling for said adjoining ½ wavelength resonators.
Claim 11
Dependent Claim
46 words
The antenna device according to claim 9 , wherein: a plurality of coupling-adjusting electrodes as defined above are formed; and said plurality of coupling-adjusting electrodes are formed at positions of linear symmetry with respect to a center in a length direction of said ½ wavelength resonator.
Claim 12
Dependent Claim
38 words
The antenna device according to claim 4 , wherein said filter section includes inner layer ground electrodes which are arranged to overlap both open ends of each of said ½ wavelength resonators with said dielectric layer interposed therebetween.
Claim 13
Dependent Claim
47 words
The antenna device according to claim 4 , wherein said dielectric substrate is formed such that a dielectric constant of said dielectric layer on which said antenna section is formed is different from a dielectric constant of said dielectric layer on which said filter section is formed.
Claim 14
Dependent Claim
40 words
The antenna device according to claim 12 , wherein said dielectric constant of said dielectric layer on which said antenna section is formed is lower than said dielectric constant of said dielectric layer on which said filter section is formed.
References Cited (Backward Citations)
US4607394A
Cited
EP0409867A1
Cited
DE68920317D1
Cited
US5021799A
Cited
US5202752A
Cited
US5684492A
Cited
US5898403A
Cited
JPH09162633A
Cited
US5867126A
Cited
US5912646A
Cited
US5861854A
Cited
JPH1032413A
Cited
JPH1041722A
Cited
US5959582A
Cited
EP0858126A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-02-25 | 2005-08-27 | 2006-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-02-25 | 2009-08-27 | 2010-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-02-25 | 2013-08-27 | 2014-02-26 | $7700.00 | Window Closed / Lapsed |