DE493877C - Directional antenna, consisting of an even number of more than two individual wires arranged in one plane - Google Patents
Directional antenna, consisting of an even number of more than two individual wires arranged in one planeInfo
- Publication number
- DE493877C DE493877C DET35688D DET0035688D DE493877C DE 493877 C DE493877 C DE 493877C DE T35688 D DET35688 D DE T35688D DE T0035688 D DET0035688 D DE T0035688D DE 493877 C DE493877 C DE 493877C
- Authority
- DE
- Germany
- Prior art keywords
- directional antenna
- antenna
- plane
- even number
- individual wires
- 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
Links
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
Description
Richtantenne, bestehend aus einer geraden Anzahl von mehr als zwei in einer Ebene angeordneten Einzeldrähten Es sind Richtantennen bekannt, die aus vielen Einzeldrähten, Einzeloszillatoren, bestehen, die entweder vertikal oder horizontal in einer Ebene angeordnet sind. - Diese Antennen werden im allgemeinen so verwendet, .daß die Einzelantennen gleichphasig erregt werden, um :damit :eine scharfe Bündelung oder Strahlungsenergie in einer Richtung zu erzielen. Es ist aber auch .bekannt, rsolche Antennen so zu erregen, daß sie abwechselnd in periodischer Wiederholung in verschiedenen Phasen schwingen, um damit eine Richtwirkung in einer anderen Richtung zu erzielen. Die vorliegende Erfindung besteht nun darin, die Einzeldrähte einer solchen Richtantenne so zu erregen, daß die Ausstrahlung in zwei um einen bestimmten Winkel verschobenen Richtungen erfolgt. Die theoretische Berechnung zeigt, daß eine derartige Richtwirkung dadurch erzielt wird, wenn man :die eine Hälfte der Antennendrähte in einer Phase und die andere Hälfte in der entgegengesetzten Phase erregt.Directional antenna consisting of an even number greater than two Individual wires arranged in a plane Directional antennas are known which consist of Many single wires, single oscillators, are made up either vertically or horizontally are arranged in one plane. - These antennas are generally used to .that the individual antennas are excited in phase in order to: thus: a sharp bundling or to achieve radiant energy in one direction. But it is also known To excite such antennas in such a way that they alternate in periodic repetition vibrate in different phases in order to have a directivity in a different direction to achieve. The present invention now consists in the individual wires of a to excite such a directional antenna so that the radiation in two around a certain Angularly shifted directions takes place. The theoretical calculation shows that a such a directivity is achieved by: one half of the antenna wires excited in one phase and the other half in the opposite phase.
Ip Fig. i ist beispielsweise eine Richtantenne mit vertikalen Einzelantennen :dargestellt. Am Tragseil s, das zwischen den Masten in, n gespannt ist, hängen .die Einzeldrähte a. Würden sie gleichphasig erregt werden, dann würde die Hauptstrahlungsrichtung .senkrecht zur Ebene der Richtantenne liegen. Findet aber :die Erregung so statt, wie :das schematisch in Fig. 2,; dargestellt ist, nämlich Aderart, daß die Antennen al bis ca., in ;der :einen Phase, a., bis alo in der anderen Phase erregt sind, so erhält man zwei Ausstrahlungsrichtungen R1 und R" die einen Winkel a miteinander bilden. Wie aus der Berechnung ersichtlich, hängt :der Winkel, den @die beidjen Richtungen R1 und R= bilden, von der Breite bzw. :dem Abstan!de der einzelnen Antennenhälften ab und kann durch Wahl .der Dimensionierung verändert werden. Die Ausstrahlung in .den beiden Richtungen kann entweder einsseifig oder zweiseitig erfolgen. Um eine einseitige Richtwirkung zu haben, verwendet man in bekannter Weise einen Reflektor. Die Erregung der einzelnen Antennenhälften in verschiedener Phase wird zweckmäßig :dadurch bewirkt, daß die übertragungsleitungen zwischen dem Generator und der Antenne so bemessen sind, daß eine gegenphasige Erregung der beiden Antennenhälften erfolgt.Ip Fig. I is, for example, a directional antenna with vertical individual antennas : shown. Hang on the suspension cable s, which is stretched between the masts in, n .the single wires a. If they were excited in phase, then the main direction of radiation would be . lie perpendicular to the plane of the directional antenna. But if: the excitement takes place like: the schematic in Fig. 2; is shown, namely vein type that the antennas al to approx., in; the: one phase, a., until alo are excited in the other phase, so one obtains two emission directions R1 and R ″ which form an angle α with one another form. As can be seen from the calculation, depends: the angle that @the two Directions R1 and R = form, on the width or: the distance of the individual antenna halves and can be changed by choosing the dimensions. The broadcast in The two directions can either be one-sided or two-sided. To a To have unilateral directivity, a reflector is used in a known manner. The excitation of the individual halves of the antenna in different phases is expedient : thereby causes the transmission lines between the generator and the antenna are dimensioned in such a way that the two halves of the antenna are excited in phase opposition.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET35688D DE493877C (en) | 1928-09-14 | Directional antenna, consisting of an even number of more than two individual wires arranged in one plane |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET35688D DE493877C (en) | 1928-09-14 | Directional antenna, consisting of an even number of more than two individual wires arranged in one plane | |
DE679529X | 1928-09-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE493877C true DE493877C (en) | 1930-03-12 |
Family
ID=25946104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DET35688D Expired DE493877C (en) | 1928-09-14 | Directional antenna, consisting of an even number of more than two individual wires arranged in one plane |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE493877C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE755783C (en) * | 1934-01-27 | 1953-04-16 | Marconi Wireless Telegraph Co | Antenna arrangement for defining a landing line for aircraft |
DE754630C (en) * | 1934-01-27 | 1953-06-08 | Marconi Wireless Telegraph Co | Device for the alternating release and blocking of energy transmission on a high-frequency line |
-
0
- DE DET35688D patent/DE493877C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE755783C (en) * | 1934-01-27 | 1953-04-16 | Marconi Wireless Telegraph Co | Antenna arrangement for defining a landing line for aircraft |
DE754630C (en) * | 1934-01-27 | 1953-06-08 | Marconi Wireless Telegraph Co | Device for the alternating release and blocking of energy transmission on a high-frequency line |
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