DE29701589U1 - Logarithmic-periodic dipole antenna for the decimeter and centimeter wave range - Google Patents
Logarithmic-periodic dipole antenna for the decimeter and centimeter wave rangeInfo
- Publication number
- DE29701589U1 DE29701589U1 DE29701589U DE29701589U DE29701589U1 DE 29701589 U1 DE29701589 U1 DE 29701589U1 DE 29701589 U DE29701589 U DE 29701589U DE 29701589 U DE29701589 U DE 29701589U DE 29701589 U1 DE29701589 U1 DE 29701589U1
- Authority
- DE
- Germany
- Prior art keywords
- decimeter
- circuit board
- wave range
- dipole antenna
- centimeter wave
- 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
- 230000006978 adaptation Effects 0.000 claims description 6
- 230000000737 periodic effect Effects 0.000 claims description 4
- 239000011241 protective layer Substances 0.000 claims description 3
- 239000004020 conductor Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/40—Radiating elements coated with or embedded in protective material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
- H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
- H01Q11/10—Logperiodic antennas
- H01Q11/105—Logperiodic antennas using a dielectric support
Landscapes
- Details Of Aerials (AREA)
Description
Logarithmisch- periodische Dipolantenne für den Dezimeter- und Zentimeter- WellenbereichLogarithmic periodic dipole antenna for the decimeter and centimeter wave range
Es ist bekannt, Antennenstrukturen auf Leiterplatten zu ätzen und diese Antennen entsprechend ihrer vom Wellenbereich vorgegeben Form in Gehäusen anzuordnen.It is known to etch antenna structures onto circuit boards and to arrange these antennas in housings according to their shape determined by the wave range.
[Ebenfalls bekannt sind logarithmisch- periodische Dipolantennen mit Elementen und Energieleitungen aus Draht, Vollmaterial oder Hohlprofilen. Ein von der Theorie gefordertes konstantes Längen- Durchmesserverhältnis aller Elemente ist dabei konstruktiv schwer zu verwirklichen, da diese praktischen Ausführung sehr kosten intensiv ist[Logarithmic-periodic dipole antennas with elements and power lines made of wire, solid material or hollow profiles are also known. A constant length-diameter ratio of all elements, as required by theory, is difficult to achieve structurally, as this practical implementation is very cost-intensive
Dadurch wurde bisher eine niederohmige Auslegung dieser Antennenform bei akzeptabler breitbandiger Anpassung mit geringem Aufwand an Anpassungs- und Transformationselementen nicht realisiert.As a result, a low-impedance design of this antenna shape with acceptable broadband adaptation and low expenditure on adaptation and transformation elements has not yet been realized.
Diese bestehenden und bekannten Nachteile herkömmlicher Antennen sollen durch die erfindungsgemäße Lösung behoben werden.These existing and known disadvantages of conventional antennas are to be remedied by the solution according to the invention.
Die Erfindung stellt sich die Aufgabe, eine logarithmisch- periodische Dipolantenne für den Dezimeter- und Zentimeter- Wellenbereich zu schaffen, welche einfach und kostengünstig gefertigt werden kann.The invention aims to create a logarithmic-periodic dipole antenna for the decimeter and centimeter wave range, which can be manufactured easily and inexpensively.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß auf eine Mehrebenenleiterplatte die für die vorgegeben Wellenbereiche entwickelten Leiterstrukturen aufgeätzt werden und alle Energie- und Phasenleitungen sowie zur Anpassung und/ oder Symetrierung erforderlichen HF- Leitungen, Stubs und Leitungskurzschlüsse bis zum Anschlußpunkt der eigentlichen HF- Anschlußleitung auf der Leiterplatte direkt aufgebracht sind.According to the invention, the object is achieved in that the conductor structures developed for the specified wave ranges are etched onto a multi-level circuit board and all energy and phase lines as well as RF lines, stubs and line short circuits required for adaptation and/or balancing are applied directly to the circuit board up to the connection point of the actual RF connection line.
Dabei ist ein konstantes Längen- Durchmesserverhältnis der Elemente durch unterschiedliche Streifenbreite zur niederohmigen Auslegung des Systems bei guter Anpassung realisiert.A constant length-diameter ratio of the elements is achieved by using different strip widths to achieve a low-resistance design of the system with good adaptation.
Gegen äußere Einflüsse, welche die Funktion der Antenne beeinflussen können, wird die Antenne mit einer Schutzschicht versehen.The antenna is provided with a protective layer to protect it against external influences that could affect its function.
Im Folgenden soll die erfindungsgemäße Anordnung anhand eines Ausführungsbeispieles und der Skizze erläutert werden.In the following, the arrangement according to the invention will be explained using an embodiment example and the sketch.
Auf eine Mehrebenenleiterplatte, welche so zugeschnitten ist, dass ihre tatsächlichen Flächenmaße den unbedingt nötigen maximalen Flächenmaßen weitestgehend angenähert werden, werden die Antennenelemente, welche für die vorgegeben Wellenbereiche entwickelt wurden, beidseitig auf geätzt.The antenna elements, which were developed for the specified wave ranges, are etched on both sides of a multi-level circuit board, which is cut in such a way that its actual surface dimensions are as close as possible to the absolutely necessary maximum surface dimensions.
Die unterschiedliche Streifenbreite garantiert dabei ein kostantes Längen- Durchmesserverhältnis im HF- technischen Sinne.The different strip widths guarantee a constant length-diameter ratio in the RF technical sense.
Alle Energie- und Phasenleitungen sowie die zur Anpassung und/ oder Symetrierung erforderlichen HF- Leitungen, Stubs und Leitungskurzschlüsse sind auf der Leiterplatte angeordnet und ermöglichen den breitbandig- impedanzrichtigen Anschluß des niederohmigen Speisekabels über eine ebenfalls auf der Leiterplatte direkt aufgebrachte Anschlußbuchse.All power and phase lines as well as the RF lines, stubs and line short circuits required for adaptation and/or balancing are arranged on the circuit board and enable the broadband, impedance-correct connection of the low-resistance feed cable via a connection socket that is also directly mounted on the circuit board.
Gegen äußere Einflüsse, welche die Funktion der Antenne beeinflussen können, wird die Antenne mit einer Schutzschicht versehen, welche vorzugsweise durch Tauchen der gesamten Antenne einschließlich der auf ihr angeordneten Leitungen, Stubs und Kurzschlüssen geschieht.To protect the antenna from external influences that may affect its function, the antenna is provided with a protective layer, which is preferably done by immersing the entire antenna, including the cables, stubs and short circuits arranged on it.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29701589U DE29701589U1 (en) | 1997-01-31 | 1997-01-31 | Logarithmic-periodic dipole antenna for the decimeter and centimeter wave range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29701589U DE29701589U1 (en) | 1997-01-31 | 1997-01-31 | Logarithmic-periodic dipole antenna for the decimeter and centimeter wave range |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE29701589U1 true DE29701589U1 (en) | 1997-03-20 |
Family
ID=8035273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE29701589U Expired - Lifetime DE29701589U1 (en) | 1997-01-31 | 1997-01-31 | Logarithmic-periodic dipole antenna for the decimeter and centimeter wave range |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE29701589U1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7439919B2 (en) | 2001-03-02 | 2008-10-21 | Nokia Corporation | Multilayer PCB antenna |
| US7940218B2 (en) | 2001-03-02 | 2011-05-10 | Nokia Corporation | Multilayer PCB antenna |
| DE102006051180B4 (en) * | 2006-10-28 | 2017-02-09 | Niels Dernedde | Logarithmic periodic dipole antenna according to the Yagi principle |
-
1997
- 1997-01-31 DE DE29701589U patent/DE29701589U1/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7439919B2 (en) | 2001-03-02 | 2008-10-21 | Nokia Corporation | Multilayer PCB antenna |
| US7940218B2 (en) | 2001-03-02 | 2011-05-10 | Nokia Corporation | Multilayer PCB antenna |
| DE102006051180B4 (en) * | 2006-10-28 | 2017-02-09 | Niels Dernedde | Logarithmic periodic dipole antenna according to the Yagi principle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R207 | Utility model specification |
Effective date: 19970430 |
|
| R156 | Lapse of ip right after 3 years |
Effective date: 20001101 |