DE856646C - Arrangement for connecting a concentric high-frequency line to a symmetrical arrangement - Google Patents
Arrangement for connecting a concentric high-frequency line to a symmetrical arrangementInfo
- Publication number
- DE856646C DE856646C DET2207D DET0002207D DE856646C DE 856646 C DE856646 C DE 856646C DE T2207 D DET2207 D DE T2207D DE T0002207 D DET0002207 D DE T0002207D DE 856646 C DE856646 C DE 856646C
- Authority
- DE
- Germany
- Prior art keywords
- line
- symmetrical
- arrangement
- concentric
- arrangement 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
- H01P5/10—Coupling devices of the waveguide type for linking dissimilar lines or devices for coupling balanced with unbalanced lines or devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/04—Coupling devices of the waveguide type with variable factor of coupling
Description
Durch eine Leiterschleife von # ' "4 Länge, die gemäß Abb. i geschaltet ist, läßt sich der übergang Von einem Zweileitersystem zu einem Dreileitersystern bzw. umgekehrt bewerkstelligen. Die Leiterschleife muß dabei genau die Länge einer Viertelwelle besitzen, da nur dann die Schleife vom Ausgangspunkt aus gesehen zum Sperrkreis wird, Soll daher eine derartige Anordnung befriedigend arbeiten, muß sie zum Zwecke genauer Abstimmung posaunenartig, ausziehbar sein, was namentlich bei im Freien befindlichen Anlagen, z. B. Antennenanpassungseinrichtungen, wegen der erforderlichen Abdichtungen auf große mechanische Schwierigkeiten stößt.The transition from a two-wire system to a three-wire system or vice versa can be achieved using a conductor loop of # '"4 length, which is connected as shown in Fig If such an arrangement is to work satisfactorily, it must be able to be pulled out in a trumpet-like manner for the purpose of precise coordination, which in particular in outdoor installations, e.g. antenna adapters, encounters great mechanical difficulties because of the necessary seals.
Erfindungsgemäß wird diese Notwendigkeit nun dadurch umgangen, daß die Schleife einfach etwas länger als 44 gemacht wird und die genaue Abstimmung durch einen lediglich zwischen den Außenleitern angebrachten Kurzschlußschieber S vorgenommen ,wird, dessen 'Mitte aus Symmetriegründen Erdpotential besitzt. Da der kurzgeschloss--ne Teil der Schleife bezüglich des Schiebers ebenfalls symmetrisch liegt, wird durch diese Maßnahme an der Symmetriewirkung der Anordnung nichts zerstört. Man hat jetzt aber den Vorteil, die Leitung völlig wasserdicht ausführen zu können bzw. im Falle vieler derartiger Anordnungen für verschiedene Wellen, wie sie in jeder Großstation zu finden sind, mit einem einzigen mechanischen Modell alle Wellen machen zu können.According to the invention, this need is now avoided by simply making the loop a little longer than 44 and the exact coordination is carried out by a short-circuit slide S attached only between the outer conductors, the center of which has ground potential for reasons of symmetry. Since the short-circuited part of the loop is also symmetrical with respect to the slide, nothing of the symmetry effect of the arrangement is destroyed by this measure. But you now have the advantage of being able to make the line completely watertight or, in the case of many such arrangements for different waves, as can be found in every major station, to be able to make all waves with a single mechanical model.
Wird der Abstand der beiden Leiter, über den bisher noch nicht verfügt worden ist, so gewählt, daß ihr Wellenwiderstand als Parallelleitung gleich dem Wellenwiderstand des durch Innen- und Außenleiter gegebenen Kabels wird, dann kann, sofern eine Parallelleitungslänge von mindestens 2/2 zur Verfügung steht, in bekannter Weise (nach C a r t e r) durch Anbringung eines geeigneten Parallelblindwiderstandes XP an geeigneter Stelle Anpassung erzwungen werden (Abb. 2).If the distance between the two conductors, which has not yet been available, is chosen so that their wave impedance as a parallel line is equal to the wave impedance of the cable given by the inner and outer conductors, then, provided a parallel line length of at least 2/2 is available in a known manner (according to C arter) by attaching a suitable parallel reactive resistor XP at a suitable point (Fig. 2).
Ist der Wellenwiderstand W, der Antennenzuleitung wesentlich größer als der Wellenwiderstand W, des Kabels, empfiehlt es sich unter Umständen, zwischen Svmmetrieschleife und Antennenenergieleitung ein i 1 4-Transformationsstück vom Wellenwiderstand 1 wl . W, zu setzen (Abb. 3), das durch über die Symmetrieschleife geschobent,# Iliil-,(-n H kicht iii &r erforderlichen Länge einzustellen ist. Ebensogut könnte natürlich auch das Transformationsstück ans zwei ineinandergreifenden Hülsen hergestellt sein, wobei die verschiebbare (äußere) Hülse dann Über die Antennenenergieleitung mit dem WellenNviderstand ll', greif t.If the wave impedance W, of the antenna feed line is significantly greater than the wave impedance W, of the cable, it may be advisable to use an i 1 4 transformation piece of the wave impedance 1 wl between the symmetry loop and the antenna power line. W, to be set (Fig. 3), which is to be set by sliding it over the symmetry loop, # Iliil -, (- n H kicht iii & r required length. Of course, the transformation piece could just as well be made on two interlocking sleeves, whereby the movable ( outer) sleeve then grips via the antenna power line with the wave resistance ll '.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET2207D DE856646C (en) | 1937-03-13 | 1937-03-14 | Arrangement for connecting a concentric high-frequency line to a symmetrical arrangement |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE512570X | 1937-03-13 | ||
DET2207D DE856646C (en) | 1937-03-13 | 1937-03-14 | Arrangement for connecting a concentric high-frequency line to a symmetrical arrangement |
Publications (1)
Publication Number | Publication Date |
---|---|
DE856646C true DE856646C (en) | 1952-11-24 |
Family
ID=25944957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DET2207D Expired DE856646C (en) | 1937-03-13 | 1937-03-14 | Arrangement for connecting a concentric high-frequency line to a symmetrical arrangement |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE856646C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1120521B (en) * | 1959-08-07 | 1961-12-28 | Fuba Antennenwerke Hans Kolbe | Frequency converter for high frequencies |
-
1937
- 1937-03-14 DE DET2207D patent/DE856646C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1120521B (en) * | 1959-08-07 | 1961-12-28 | Fuba Antennenwerke Hans Kolbe | Frequency converter for high frequencies |
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