EP0973229B1 - Third resonance antenna - Google Patents
Third resonance antenna Download PDFInfo
- Publication number
- EP0973229B1 EP0973229B1 EP98111290A EP98111290A EP0973229B1 EP 0973229 B1 EP0973229 B1 EP 0973229B1 EP 98111290 A EP98111290 A EP 98111290A EP 98111290 A EP98111290 A EP 98111290A EP 0973229 B1 EP0973229 B1 EP 0973229B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- antenna
- antenna element
- oblong
- distance
- antenna according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
- H01Q21/12—Parallel arrangements of substantially straight elongated conductive units
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
- H01Q21/205—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path providing an omnidirectional coverage
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/06—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
Description
Claims (14)
- Antenna, with
a first antenna element (3) comprising a first and a second oblong portion (5, 6) arranged parallel and with a distance W2 to each other, a transverse portion (7) connecting said first and said second oblong portion (5, 6) at a distance L2 from a feeding side end (9) of said first and second oblong portion (5, 6), and a feeding portion extending parallel to and between said first and said second oblong (5, 6) portion for connecting said transverse portion (7) with a transmission line, and a reflector means (15, 24, 31, 36, 40, 43) spaced parallel with a common plane of said first and said second oblong portion,
characterized in, that L2 is smaller than L/2, whereby L is the length of the first and the second oblong portion (5, 6; 10, 11). - Antenna according to claim 1,
characterized by
a second antenna element (4) arranged opposite to said first antenna element (3) and comprising a first and a second oblong portion (10, 11) arranged parallel and with a distance W2 to each other, a transverse portion (12) connecting said first and said second oblong portion (10, 11) at a distance L2 from a feeding side end (14) of said first and second oblong portion (10, 11), and a feeding portion (13) extending parallel to and between said first and said second oblong portion (10, 11) for connecting said transverse portion (12) with a transmission line, whereby said reflector means (15) is spaced to and parallel with a common plane of said first and said second oblong portion (10, 11) of said second antenna element (4). - Antenna according to claim 1 or 2,
characterized in, that a distance S between said feeding portion and said first and said second oblong portion (5, 6, 10, 11) is smaller than W/2, respectively. - Antenna according to claim 1, 2 or 3,
characterized in, that a low loss substance (16, 22, 35, 39) is located between said first and/or second antenna element (3, 4) and said reflector means and that the distance H between said first and/or said second antenna element and said reflector means is essentially H =λ/4, λ being the electric wavelength of the central frequency within the low loss substance. - Antenna according to one of the preceding claims,
characterized in, that said low loss substance (35) is air. - Antenna according to one of the claims 1 to 5,
characterized in, that said low loss substance (16, 22, 39) is a synthetic foam. - Antenna according to one of the preceding claims,
characterized in, that said first and/or second antenna element (5, 6, 10, 11) consist(s) of thin metal plates. - Antenna according to one of the claims 1 to 7,
characterized in, that said first and/or second antenna element (5, 6; 10, 11) consist(s) of thin metal films printed on a dielectric substrate (17, 23, 29, 38). - Antenna according to claim 8, if related back to claim 2,
characterized in, that said first and said second antenna element (5, 6; 10, 11) are printed onto the same face of said dielectric substrate. - Antenna according to claim 8, if related back to claim 2,
characterized in, that said first and said second antenna element (5, 6; 10, 11) are printed onto opposite faces of said dielectric substrate. - Antenna according to one of the claims 3 to 10, if related back to claim 2,
characterized in, that said transmission lines are balanced microstrip lines. - Antenna according to claim 11,
characterized in, that said balanced microstrip lines are coplanar to said first and said second antenna element (5, 6; 10, 11), respectively. - Antenna according to claim 11,
characterized in, that said balanced microstrip lines are essentially orthogonal to said first and said second antenna element. - Antenna array comprising a plurality of antennas as defined in one of the claims 3 to 13, if related back to claim 2.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69830236T DE69830236T2 (en) | 1998-06-18 | 1998-06-18 | Antenna for third resonance |
EP98111290A EP0973229B1 (en) | 1998-06-18 | 1998-06-18 | Third resonance antenna |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98111290A EP0973229B1 (en) | 1998-06-18 | 1998-06-18 | Third resonance antenna |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0973229A1 EP0973229A1 (en) | 2000-01-19 |
EP0973229B1 true EP0973229B1 (en) | 2005-05-18 |
Family
ID=8232143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98111290A Expired - Lifetime EP0973229B1 (en) | 1998-06-18 | 1998-06-18 | Third resonance antenna |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0973229B1 (en) |
DE (1) | DE69830236T2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4719470A (en) * | 1985-05-13 | 1988-01-12 | Ball Corporation | Broadband printed circuit antenna with direct feed |
WO1988009065A1 (en) * | 1987-05-08 | 1988-11-17 | Darrell Coleman | Broad frequency range aerial |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3369245A (en) * | 1964-12-10 | 1968-02-13 | Technical Appliance Corp | Wing type dipole with end mounted stubs |
US3587110A (en) * | 1969-07-01 | 1971-06-22 | Rca Corp | Corporate-network printed antenna system |
US3747114A (en) * | 1972-02-18 | 1973-07-17 | Textron Inc | Planar dipole array mounted on dielectric substrate |
US4074270A (en) * | 1976-08-09 | 1978-02-14 | The United States Of America As Represented By The Secretary Of The Navy | Multiple frequency microstrip antenna assembly |
NL9401429A (en) * | 1994-09-02 | 1996-04-01 | Hollandse Signaalapparaten Bv | Stripline antenna. |
-
1998
- 1998-06-18 EP EP98111290A patent/EP0973229B1/en not_active Expired - Lifetime
- 1998-06-18 DE DE69830236T patent/DE69830236T2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4719470A (en) * | 1985-05-13 | 1988-01-12 | Ball Corporation | Broadband printed circuit antenna with direct feed |
WO1988009065A1 (en) * | 1987-05-08 | 1988-11-17 | Darrell Coleman | Broad frequency range aerial |
Also Published As
Publication number | Publication date |
---|---|
DE69830236T2 (en) | 2006-01-26 |
DE69830236D1 (en) | 2005-06-23 |
EP0973229A1 (en) | 2000-01-19 |
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