Patent US6750821B2 successfully refreshed from Google Patents.
US6750821B2
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US
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Folded dual-band antenna apparatus
Assignee: Industrial Technology Research Institute
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Filing: 2003-01-15
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Granted: 2004-06-15
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Expires: 2023-01-15
Abstract
Abstract A folded dual-band monopole antenna apparatus is disclosed, which includes a radiation body, a transmission line and a conductor. The radiation body resonates at a first and a second operating frequency. The radiation body connects the transmission line by way of the conductor. The radiation body includes a first side and a corresponding second side, and slits are set alternately on the first side and the second side to make the radiation body to be a meandered structure. The radiation body is folded along an extended direction of the slits to form a pillar structure for size miniaturization. The radiation body can cover a surface of a pillar dielectric material structure by printing technology for further size miniaturization and improving the strength of the radiation body.
Inventors
- 👤 Shyh-Tirng Fang
- 👤 Fa-Hsien Chang
- 👤 Kin-Lu Wong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:33
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/30; H01Q9/42; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/241; H01Q1/242; H01Q1/36; H01Q1/38; H01Q5/00; H01Q5/30; H01Q5/307; H01Q5/342; H01Q5/357
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
148 words
A folded dualband antenna apparatus with a first operating frequency and a second operating frequency, comprising: a radiation body with a first side and a second side corresponding to the first side, the radiation body including: a plurality of slits, set alternately on the first side and the second side; and a feeding point for defining a first current path and a second current path on the radiation body, wherein the length of the first current path is a quarter of a wavelength corresponding to the first operating frequency, and the length of the second current path is a quarter of a wavelength corresponding to the second operating frequency; wherein the radiation body is folded along an extended direction of the slits to form a pillar structure; a transmission line for transmitting signals; and a conductor, connecting the transmission line and the feeding point of the radiation body.
Claim 2
Dependent Claim
148 words
A folded dualband antenna apparatus with a first operating frequency and a second operating frequency, comprising: a radiation body with a first side and a second side corresponding to the first side, the radiation body including: a plurality of slits, set alternately on the first side and the second side; and a feeding point for defining a first current path and a second current path on the radiation body, wherein the length of the first current path is a quarter of a wavelength corresponding to the first operating frequency, and the length of the second current path is a quarter of a wavelength corresponding to the second operating frequency; wherein the radiation body is folded along an extended direction of the slits to form a pillar structure; a transmission line for transmitting signals; and a conductor, connecting the transmission line and the feeding point of the radiation body.
Claim 3
Dependent Claim
23 words
A folded dual-band antenna apparatus according to claim 1 , wherein the conductor and the radiation body are combined in a unity form.
Claim 4
Dependent Claim
19 words
A folded dualband antenna apparatus according to claim 1 , wherein the radiation body is a rectangular metal plate.
Claim 5
Dependent Claim
28 words
A folded dual-band antenna apparatus according to claim 1 , wherein the first operating frequency is about 900 MHz, and the second operating frequency is about 1800 MHz.
Claim 6
Dependent Claim
21 words
A folded dual-band antenna apparatus according to claim 1 , wherein the directions of the slits are parallel to each other.
Claim 7
Dependent Claim
28 words
A folded dual-band antenna apparatus according to claim 1 , further comprising a pillar dielectric material, the radiation body formed on the surface of the pillar dielectric material.
Claim 8
Dependent Claim
19 words
A folded dual-band antenna apparatus according to claim 6 , wherein the pillar dielectric material is a ceramic material.
Claim 9
Dependent Claim
28 words
A folded dual-band antenna apparatus according to claim 6 , wherein the radiation body is set on the surface of the pillar dielectric material using a printing technology.
Claim 10
Dependent Claim
19 words
A folded dual-band antenna apparatus according to claim 1 , wherein the pillar structure is a rectangular pillar structure.
Claim 11
Dependent Claim
18 words
A folded dual-band antenna apparatus according to claim 1 , wherein the pillar structure is a cylindrical structure.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-06-15 | 2007-12-15 | 2008-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-06-15 | 2011-12-15 | 2012-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-06-15 | 2015-12-15 | 2016-06-15 | $7700.00 | Window Closed / Lapsed |