DE709036C - Omnidirectional radiator for ultra-short waves - Google Patents

Omnidirectional radiator for ultra-short waves

Info

Publication number
DE709036C
DE709036C DET46801D DET0046801D DE709036C DE 709036 C DE709036 C DE 709036C DE T46801 D DET46801 D DE T46801D DE T0046801 D DET0046801 D DE T0046801D DE 709036 C DE709036 C DE 709036C
Authority
DE
Germany
Prior art keywords
dipoles
feed line
omnidirectional
radiator
ultra
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
Application number
DET46801D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefunken AG
Original Assignee
Telefunken AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Telefunken AG filed Critical Telefunken AG
Priority to DET46801D priority Critical patent/DE709036C/en
Application granted granted Critical
Publication of DE709036C publication Critical patent/DE709036C/en
Expired legal-status Critical Current

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
    • H01Q21/10—Collinear arrangements of substantially straight elongated conductive units

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Description

Rundstrahler f "n trakurzwellen Vorliegende Erfindung betrifft einen Rundstrahler für sehr kurze Wellen. Omnidirectional radiators for short waves The present invention relates to an omnidirectional radiator for very short waves.

Die gebräuchlichen Rundstrahler zeigen ein mehr oder weniger deformiertes Runddiagramm, wobei die Deformation durch die Speisung der einzelnen Dipole hervorgerufen wird. Auch die konstruktive Ausführung der bisherigen Rundstrahler bietet erhebliche Schwierigkeiten, weil es notwendig ist, die einzelnen übereinandergesetzten Dipole derart zu speisen, daß alle eine gleiche Strombelegung besitzen.The common omnidirectional radiators show a more or less deformed one Circular diagram, with the deformation caused by the feeding of the individual dipoles will. The design of the previous omnidirectional radiators also offers considerable Difficulties because it is necessary to have the individual dipoles placed one on top of the other to feed in such a way that all have the same current allocation.

Es sind mich Rundstrahler für Ultrakurzwellen bekannt, die aus mehreren übereinandergesetzten Rohren bestehen, welche von einer im Innern der Rohre verlaufenden Speiseleitung gespeist werden.There are omnidirectional radiators for ultra-short waves known to me, which consist of several There are superposed tubes, which extend from one inside the tubes Feed line are fed.

Bei der praktischen Durchführung derartiger Antennen ergeben sich nun insofern Schwierigkeiten, als die unteren Dipole mehr Strom erhalten als die oberen. Es liegt das daran, daß die unteren Dipole der Speiseleitung bereits große Energiebeträge entnehmen. Um die.scn Nachteil, der eine ungünstige Beeinflussung der Bündelung in vertikaler Richtung bedingt, zu vermeiden, ist die Speiseleitung beim Gegenstand der Erfindung derart ausgeführt, daß die unteren Dipole schlecht angepaßt sind. Das wird erfindungsgemäß dadurch erreicht, daß der Wellenwiderstand der Speiseleitung am unteren Ende groß, am oberen Ende klein gewählt wird. Da die als Rohre ausgebildeten Dipole einen kleinen Wellenwiderstand besitzen, sind damit die unteren Dipole an die Speiseleitung mit hohem Wellenwiderstand sehr viel schlechter angepaßt als die oberen. Durch die geeignete Wahl der Verhältnisse kann nun erreicht werden, daß alle Dipole eine gleiche Strombelegung besitzen.In the practical implementation of such antennas result now difficulties insofar as the lower dipoles receive more current than the upper. This is because the lower dipoles of the feed line are already large Take energy amounts. To die.scn disadvantage of having an adverse affect Due to bundling in the vertical direction, the feed line is to be avoided In the subject matter of the invention carried out in such a way that the lower dipoles are bad are adapted. This is achieved according to the invention in that the wave resistance of the feed line is chosen to be large at the lower end and small at the upper end. Since the Dipoles designed as tubes have a small wave resistance, are therefore the lower dipoles on the feed line with high wave impedance are much worse adapted than the above. A suitable choice of the ratios can now be achieved be that all dipoles have the same current assignment.

In der Abbildung ist eine derartige Antenne schematiscli dargestellt. Es ist ersichtlich, daß die Speiseleitung Sp am unteren Ende dadurch einen hohen Wellenwiderstand besitzt, daß die beiden einzelnen Leiter relativ großen Abstand voneinander besitzen.Such an antenna is shown schematically in the figure. It can be seen that the feed line Sp at the lower end thereby has a high Characteristic impedance has that the two individual conductors are relatively large apart own each other.

Claims (2)

PATLNTANSPRÜCHC: i. Rundstrahler für ultrakurze Wellen, bestehend aus einer Anzahl übereinandergeordneter rohrförmiger Dipole, die von einer in ihrem Innern verlaufenden Energiedoppelleitung phasengleich gespeist werden; dadurch gekennzeichnet, daß durch Änderung des Wellenwiderstandes der Speiseleitung längs der Strahlerzeile die Anpassung der dem Sender bzw. Empfänger näherliegenden Dipole an die Speiseleitung schlechter ist, als die Anpassung der enfernteren Dipole. PATENT CLAIM C: i. Omnidirectional radiator for ultrashort waves, consisting of of a number of tubular dipoles arranged one above the other, which are held by one in their Inside running double energy line are fed in phase; characterized, that by changing the wave resistance of the feed line along the radiator line the adaptation of the dipoles, which are closer to the transmitter or receiver, to the feed line is worse than the adjustment of the more distant dipoles. 2. Rundstrahler nach Anspruch i, dadurch gekennzeichnet, daß der Abstand zwichen den beiden . Leitern der Speiseleitung gegen das freie Dipolende hin abnimmt.2. Omnidirectional radiator according to claim i, characterized in that the distance between the two. Ladders of the feed line decreases towards the free dipole end.
DET46801D 1936-04-22 1936-04-23 Omnidirectional radiator for ultra-short waves Expired DE709036C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET46801D DE709036C (en) 1936-04-22 1936-04-23 Omnidirectional radiator for ultra-short waves

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE475855X 1936-04-22
DET46801D DE709036C (en) 1936-04-22 1936-04-23 Omnidirectional radiator for ultra-short waves

Publications (1)

Publication Number Publication Date
DE709036C true DE709036C (en) 1941-08-04

Family

ID=25944273

Family Applications (1)

Application Number Title Priority Date Filing Date
DET46801D Expired DE709036C (en) 1936-04-22 1936-04-23 Omnidirectional radiator for ultra-short waves

Country Status (1)

Country Link
DE (1) DE709036C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1025947B (en) * 1953-02-04 1958-03-13 I Outil R B V Et De La Radio I Antenna consisting of several radiator groups with omnidirectional diagram in a plane parallel to the electrical field directions
DE3514709A1 (en) * 1985-04-24 1986-10-30 Wilhelm Sihn jun. KG, 7532 Niefern-Öschelbronn Vertical omnidirectional antenna

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1025947B (en) * 1953-02-04 1958-03-13 I Outil R B V Et De La Radio I Antenna consisting of several radiator groups with omnidirectional diagram in a plane parallel to the electrical field directions
DE3514709A1 (en) * 1985-04-24 1986-10-30 Wilhelm Sihn jun. KG, 7532 Niefern-Öschelbronn Vertical omnidirectional antenna

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