EP0989627B1 - Antenne à double fréquence - Google Patents
Antenne à double fréquence Download PDFInfo
- Publication number
- EP0989627B1 EP0989627B1 EP98810946A EP98810946A EP0989627B1 EP 0989627 B1 EP0989627 B1 EP 0989627B1 EP 98810946 A EP98810946 A EP 98810946A EP 98810946 A EP98810946 A EP 98810946A EP 0989627 B1 EP0989627 B1 EP 0989627B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- conductive layer
- frequency
- dual frequency
- frequency antenna
- conductive
- 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
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/106—Microstrip slot antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- 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
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
-
- 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
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
-
- 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
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration
-
- 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
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
-
- 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
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0442—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular tuning means
-
- 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
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
- H01Q9/0457—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means electromagnetically coupled to the feed line
Definitions
- the invention relates to a dual frequency antenna for a first frequency band around the frequency f 1 and for a second frequency band around the frequency f 2 , with a conductive layer which has at least one coupling opening, with a small distance from the conductive layer in the area of the coupling openings a stripline network is provided and at least one conductive patch is arranged on the side opposite the coupling openings.
- a number of dual frequency antennas are from the prior art especially known in microstrip technology. With today's Means of communication arise for various reasons Need to work on multiple frequency bands. It there is therefore a need to cover all frequency ranges as possible to operate with an antenna.
- the well-known antenna systems like the US 4,771,291, often do not meet the user's expectations for miniaturization, simplicity of construction, robustness in operation and costs.
- the invention lies Task based on a dual frequency antenna of the aforementioned Art to improve in such a way that it is easier with a better transmission characteristic can be built up.
- the conductive layer is essentially rectangular, that one edge of the conductive layer is connected to ground, so that the conductive layer has an opposite free end, that the length of the second
- this layer itself becomes the antenna for a second frequency range because the length of the free end a length corresponding to a quarter of the center frequency of the second frequency band (or a corresponding odd number Multiples) is coordinated.
- the width of the conductive layer 2 is advantageously approximately 0.25 times to 0.5 times the wavelength ⁇ 2 introduced above.
- the coupling openings 3 are configured here as a butterfly-shaped opening; for example, two intersecting rectangular coupling openings or other configurations such as an H-shape can also be provided. All forms are suitable which are suitable for emitting a linearly polarized wave.
- the electrically effective length of the slot is approximately ( ⁇ 1 + ⁇ 2 ) / 8.
- stripline network 4 can also have a different distribution and arrangement of the strips.
- the stripline network 4 is fed via a coaxial feed line 9. It is shown in more detail in FIG. 2.
- this plate 5 is advantageously approximately 0.5 times 0.5 of the wavelength ⁇ 1 introduced above. If the dual frequency antenna is accommodated in a non-conductive housing (not shown in the drawings), this plate 5 can be part of the housing or can be attached to it.
- the conductive plate 5 or tongue has a length of ⁇ 1/2 and is hereinafter referred to as patch.
- the space 12 between the patch 5 and the coupling openings 3 can also be filled with a non-conductive material with a high dielectric constant.
- the patch 5 itself, which is rectangular here, can also be round, polygonal or comprise a series of conductive strips. However, it preferably has the same dimensions as the metallic layer 2.
- the metallic layer 2 is connected on one side 10 to mass 14 over its entire width. This is represented in FIG. 1 by the lateral contact surface 7 with an indicated ground line 8.
- the mass 14 may be a plate, in which case, advantageously, the distance between the layer 2 above the ground plane 14, for example, approximately ⁇ 2/10, respectively.
- the size and shape of the ground surface 14 can essentially be used to set the power component which is emitted in the opposite direction to the main beam direction.
- the size and shape of the ground surface 14 also have a direct influence on the shape and in particular on the half-value width of the directional diagrams.
- the main beam direction of the antenna is oriented vertically from the mass surface 14 through the conductive layer 2 and the plate 5 according to the arrow 19.
- FIG. 2 shows a bottom view of the carrier plate 1, the entire carrier plate 1 being provided with the metallic layer 2 on the top, as in FIG. 1.
- a carrier plate 1 which has a larger area than the vaporized surface of the metallic layer 2.
- the contact surface 7 is attached to a larger longitudinal side 10, so that the side edge 11 is shorter.
- the side edge 11 is dimensioned such that it has the length ⁇ 2/4 or (2n + 1) * ⁇ 2/4 , the wavelength ⁇ 2 corresponding to a second of the two frequencies f 1 and f 2 of the dual frequency antenna.
- a ground surface is formed by the metallic layer 2, which has a free end 13.
- this microstrip antenna in two frequency bands.
- a frequency f 1 which is tuned in a known manner via coupling openings 3 and patch 5
- the frequency f 2 which is tuned over the length of the free end. So it is possible to specify a dual frequency microstrip antenna with the frequencies used in mobile communications in the 900 and 1800 MHz range, with the conventional part working in the 1800 MHz band and the length of the side edge 11 being dimensioned such that this antenna part in 900 MHz band works.
- This line 4 must cross the coupling slot 3 so that the Slot is excited. In particular, it can over the middle of the Coupling slot 3 may be arranged away.
- the length of the pipe section 16 from the center 17 opposite the coupling slot to the open line end 13 and all line transformations from the level of said mid 17 to at the line end at 13 are used to adjust the coupling slot 3 to the 50 Ohm coaxial feed line 9.
- the inner conductor of the coaxial feed line 9 is soldered to the stripline network and the outer conductor to the conductive layer 2.
- the line 4 can instead of via the feed line 9 from the antenna also lead away to a processor processing the high-frequency signal Circuit, especially to an amplifier circuit lead, which is provided on the carrier plate 1 itself.
- the space between the support plate 1 and the ground surface 14 with one for the respective Frequency range of plastic suitable for high-frequency technology be filled.
- suitable materials are polypropylene, polyethylene and PTFE.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Claims (4)
- Antenne à double fréquence pour une première bande de fréquence autour de la fréquence f1 et pour une deuxième bande de fréquence autour de la fréquence f2, avec une couche conductrice (2), qui dispose d'au moins une ouverture de couplage (3), tandis qu'à une très faible distance de la couche conductrice (2) dans la région des ouvertures de couplage (3) il est prévu un réseau de guides d'ondes à ruban (4) et sur le côté opposé aux ouvertures de couplage (3) est agencé au moins un patch conducteur (5), caractérisée en ce que la couche conductrice (2) est sensiblement rectangulaire, en ce qu'un bord (10) de la couche conductrice (2) est raccordé à la masse (14), de sorte que la couche conductrice (2) dispose d'une extrémité libre opposée (13), en ce que la longueur du deuxième bord latéral (11) de la couche conductrice rectangulaire (2) présente une longueur d'environ (2n+1) * λ2/4, n étant un nombre entier naturel ou zéro et λ2 = c/f2 avec c comme vitesse de la lumière relative, et en ce que f1 est plus grand que f2.
- Antenne à double fréquence selon la revendication 1, caractérisée en ce que l'espace intermédiaire (12) entre la couche intermédiaire et le patch (5) et/ou l'espace intermédiaire entre le réseau de guides d'ondes à rubans (4) et une surface de masse (14) formant la masse est rempli par un diélectrique.
- Antenne à double fréquence selon la revendication 1 ou 2, caractérisée en ce qu'un bord (10) de la couche conductrice (2) est raccordé sur toute sa largeur à la masse (14).
- Antenne à double fréquence selon la revendication 3, caractérisée en ce que le bord (10) est raccordé à la masse (14) par une surface conductrice disposée perpendiculairement à la couche (2) et dirigée en éloignement du patch (5).
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK98810946T DK0989627T3 (da) | 1998-09-21 | 1998-09-21 | Dobbeltfrekvensantenne |
ES98810946T ES2186997T3 (es) | 1998-09-21 | 1998-09-21 | Antena de frecuencia dual. |
DE59806281T DE59806281D1 (de) | 1998-09-21 | 1998-09-21 | Dualfrequenzantenne |
EP98810946A EP0989627B1 (fr) | 1998-09-21 | 1998-09-21 | Antenne à double fréquence |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98810946A EP0989627B1 (fr) | 1998-09-21 | 1998-09-21 | Antenne à double fréquence |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0989627A1 EP0989627A1 (fr) | 2000-03-29 |
EP0989627B1 true EP0989627B1 (fr) | 2002-11-13 |
Family
ID=8236341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98810946A Expired - Lifetime EP0989627B1 (fr) | 1998-09-21 | 1998-09-21 | Antenne à double fréquence |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0989627B1 (fr) |
DE (1) | DE59806281D1 (fr) |
DK (1) | DK0989627T3 (fr) |
ES (1) | ES2186997T3 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2819109A1 (fr) * | 2001-01-04 | 2002-07-05 | Cit Alcatel | Antenne multi-bandes pour appareils mobiles |
US6429819B1 (en) * | 2001-04-06 | 2002-08-06 | Tyco Electronics Logistics Ag | Dual band patch bowtie slot antenna structure |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4771291A (en) * | 1985-08-30 | 1988-09-13 | The United States Of America As Represented By The Secretary Of The Air Force | Dual frequency microstrip antenna |
JPH03263903A (ja) * | 1989-04-28 | 1991-11-25 | Misao Haishi | 小形アンテナ |
FR2664749B1 (fr) * | 1990-07-11 | 1993-07-02 | Univ Rennes | Antenne microonde. |
WO1996004691A1 (fr) * | 1994-07-29 | 1996-02-15 | Wireless Access, Inc. | Antenne microruban a double bague partiellement court-circuitee comportant une ligne microruban |
-
1998
- 1998-09-21 DE DE59806281T patent/DE59806281D1/de not_active Expired - Lifetime
- 1998-09-21 EP EP98810946A patent/EP0989627B1/fr not_active Expired - Lifetime
- 1998-09-21 DK DK98810946T patent/DK0989627T3/da active
- 1998-09-21 ES ES98810946T patent/ES2186997T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59806281D1 (de) | 2002-12-19 |
EP0989627A1 (fr) | 2000-03-29 |
DK0989627T3 (da) | 2003-03-10 |
ES2186997T3 (es) | 2003-05-16 |
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