EP2735052A1

EP2735052A1 - Nondirectional rf power divider

Info

Publication number: EP2735052A1
Application number: EP12732531.4A
Authority: EP
Inventors: Thomas Haunberger; Manfred Stolle; Claudia Daurer
Original assignee: Kathrein Werke KG
Current assignee: Kathrein SE
Priority date: 2011-07-22
Filing date: 2012-06-21
Publication date: 2014-05-28
Anticipated expiration: 2032-06-21
Also published as: US9300026B2; DE102011108316A1; KR20140038541A; WO2013013745A1; CN103688405A; EP2735052B1; US20140191821A1; CN103688405B; KR101948274B1

Abstract

An improved nondirectional radiofrequency power divider is characterized by the following features: - having an outer conductor (1) and/or outer conductor housing (1'), with a first inner conductor (11), wherein the first inner conductor (11) runs in the outer conductor (1) or in the outer conductor housing (1'), - with a second inner conductor (13), wherein the second inner conductor (13) runs in the space (15) which is formed between the first inner conductor (11) and the outer conductor (1) or the outer conductor housing (1'), - the second inner conductor (13) is electrically connected to a branch line running away therefrom or is provided therewith, the second inner conductor (13) is relatively adjustable and/or positionable in terms of the distance of said second inner conductor from the first inner conductor (11) and/or in terms of the distance of said inner conductor from the outer conductor (1) or from the outer conductor housing (1') so as to effect a variable power distribution.

Description

Non-directional RF power divider

The invention relates to a non-directional RF power divider according to the preamble of claim 1.

A power divider for splitting or merging high-frequency power (RF power) has become known, for example, from DE 10 2006 056 618.

Such a previously known power divider comprises a coaxial conductor with an outer conductor and a transformation inner conductor guided therein. At the front end of the outer conductor, a coaxial Summentor is provided. At the opposite end of the outer conductor, a head piece is formed with at least two and preferably three or four individual gates, which comprise outer conductor connections. The individual gates are axially penetrated by an inner conductor, which is connected to the transformation inner conductor at its upper end. The peculiarity of this prior art RF power divider is that the head piece is integrally formed with the single gate while avoiding a mechanical connection point and it consists of a forged part, a casting or a milled part.

A generic RF circuit for effecting non-aligned power sharing is also known, for example, from "Taschenbuch der Hochfrequenztechnik", H. Einke and F.. Gundlach, Springer-Verlag, Berlin / Heidelberg / New York, 1968, pages 373 and 374, as known. The non-directional power distribution is independent of the direction in which propagates the wave in the main line.

There, a series branch is described which, in addition to an outer conductor and a coaxial inner conductor extending therein comprises a third conductor which is provided between the existing conductors, as a pipe concentrically surrounding the inner conductor. With such a construction, two consumers can be connected which, with respect to the incoming wave, act like two series-connected consumers lying in the division plane. The characteristic impedance of the undivided line is divided into the corresponding characteristic impedance for the first and for the second consumer. A corresponding implementation of this principle can be taken from the generic US Pat. No. 7,026,888 B2 as known.

In this non-directional RF power divider, a coupler for connecting a coaxial line is provided in a housing forming the outer conductor at the opposite end faces, the housing forming the outer conductor being provided with an axial central bore is, in which is provided in the coaxial arrangement of the first or main inner conductor extending between the coaxial connecting pieces. In the space between the inner or main conductor and the outer conductor further surrounding the inner conductor tube is provided, which forms the second inner conductor. This second inner conductor is held in a constructive manner via dielectric disks with respect to the first or main inner conductor.

From the second tube formed as an inner conductor then performs a radially and vertically extending tap line through a hole in the outer conductor housing to the outside, where a third serial coaxial coupler is provided for connecting a coaxial branch line.

As a result, a fixed predetermined RF power distribution is also effected.

In contrast to the present generic state of the art in the form of a non-directional power divider with a three-gate circuit directional couplers are also known in principle, which is a four-gate circuit, so to another principle of action, in which also the fourth gate is completed, for example via a terminator.

Representative of such four-port directional coupler, reference is made to US 3,166,723 A, which comprises a conventional inner conductor in a outer conductor housing between a first and a second gate, and in the same outer conductor housing then between the third and fourth gate is a line connection and that with a U-shaped coupling member. This U-shaped coupling member can be adjusted via an adjustment mechanism transversely to the inner conductor extending between the first and the second gate, that is, brought closer to the inner conductor or removed therefrom. This microwave directional coupler known from US Pat. No. 3,166,723 A can be operated bidirectionally, with the decoupled signals occurring at different ports.

A directional coupler in the corresponding four-port technique has become known, for example, from US 2009/0045887 AI. This directional coupler comprises two tactile or coupling lines, between which the inner conductor extending from the first to the second gate is arranged. Both tactile or coupling lines are shorter than a quarter wavelength, based on the operating frequency. Preferably, this wavelength should be, for example, in the order of 1/12 of the operating wavelength. Due to the interconnection should be realized with short lines high directivity.

Finally, a coupling device for use in high-frequency voltage sources connected according to the loop-through method can also be taken from DE 1 192 714 A as known. The coupling device has an output circuit with an inner and an outer conductor. Further, a coupling device is provided with a coupling conductor, which - starting from a center position - is arranged displaceable both in the direction of the inner, as well as on the outer conductor of the line circuit. According to column 3, lines 13 to 20 of the abovementioned prior publication, a coupling lead is to be connected via Fe The strap should be connected to two feedthrough lines with as much impedance as possible.

In contrast, it is an object of the present invention, starting from the generic state of the art to provide an improved non-directional high-frequency power divider, with which in a simple way a power distribution can be effected differently adjustable, without affecting the adaptation of the main line.

The object is achieved according to the features specified in claim 1. Advantageous embodiments of the invention are specified in the subclaims.

The solution according to the invention is characterized in that the second inner conductor, which is arranged between the primary or main inner conductor and the outer conductor, is formed so that the distance of the second inner conductor with the first inner conductor and / or the outer conductor changeable, that is different is adjustable. Because depending on the different distance results in a different high-frequency power distribution between the first and second inner conductor according to the principle of series branching (see "Taschenbuch der Hochfrequenztechnik", H. Meinke and FW Gundlach, Springer Verlag, Berlin / Heidelberg / New York, 1968, pages 373 and 374). As a result, an undirected RF power divider is created, which allows a simple power distribution variable power distribution.

The adjustment mechanism can be replaced by suitable tech- Niche measures are implemented, for example by means of a radial guide device, which includes, for example, two non-conductive pins or projection devices that pass through the outer conductor housing and allow it from the outside, the relative position of the second inner conductor with respect to the first inner conductor and / or the outer conductor can be adjusted.

The second inner conductor can be shaped differently over a wide range.

In a preferred embodiment, it has a semi-tubular design. This allows any relative adjustment in the radial direction, ie transversely to the inner and / or outer conductor arrangement, in the intermediate space between inner conductor and outer conductor within wide limits.

In cross-sectional representation of this second inner conductor must not be designed semi-tubular. It can be formed deviating from the circular shape. Preferably, however, he knows in cross section a semi-circular shape with a concave to the inner conductor and the outer conductor convex slope surface. In cross-section, however, the second inner conductor can also be plate-shaped or U-shaped or V-shaped in cross-section, in such a way that the inner conductor can dip into the space between the U- or V-shaped configuration of the second inner conductor.

Otherwise, both the inner conductor as well as the outer conductor housing may have any cross-sectional shapes. The inner conductor does not necessarily have to be cylindrical. or tubular, that is, with a circular cross-section, but may be formed, for example, with a rectangular or square cross-section, generally n-polygonal cross-section. The same applies to the second inner conductor, the inner surface contour of the outer conductor or outer conductor housing, etc.

Thus, the present invention makes possible a very broadband and, above all, infinitely variable power distribution according to the principle of a series branching, for example in a range from 380 MHz to 2700 MHz. The power distribution can be z. B. between 6 to 20 dB. It is realized - as mentioned - preferably by a nested inner conductor system, wherein the second inner conductor relative to the first inner conductor transversely (ie preferably radially) is displaceable, or vice versa. The sums of the two series impedances give broadband (approximately) system impedance, despite the variable power split.

The length of the coupling zone can be greater than λ / 10, based on the lower limit frequency of the transmitted RF frequency.

The invention will be explained in more detail with reference to drawings. In detail:

Figure 1: a first embodiment according to the invention in an exploded view; FIG. 2 shows an axial longitudinal section through the exemplary embodiment according to FIG. 1 in the mounted state;

FIG. 3 shows a sectional view along the line III - III in FIG. 2;

FIGS. 4a to 4c show different schematic cross-sectional to 6b illustrations for illustrating different exemplary embodiments, in which partially the second inner conductor is shown in different adjustment position in relation to the first inner conductor or to the outer conductor.

FIG. 1 shows a first embodiment according to the invention for a non-directional RF power divider.

In this case, the RF power divider comprises an outer conductor 1 with an outer conductor housing 1 'of electrically conductive material, which may have any desired cross-sectional shapes. In the exemplary embodiment shown, the outer conductor is formed in a rod-shaped manner with a square cross-section transversely to its longitudinal extension L. In other words, the outer conductor 1 has a longitudinal extent L, a height H and width B, wherein the height and width are equal in the embodiment shown.

In each case, a coaxial coupler 5 is provided on the opposite end faces 1 a of the housing-shaped outer conductor 1, for example screw-on, which in a known manner has an inner conductor connection 6, an outer conductor connection. 7 and usually a dielectric holding device 8, over which the electrically conductive coaxial inner conductor or the inner conductor connecting piece 5a is held with respect to the cylindrical outer conductor socket 5b.

The described coaxial coupler 5 can be screwed in the illustrated embodiment at the two opposite end faces la each by means of screws. Training and attachment of the aforementioned coaxial coupler 5 and the outer conductor 1 may also be designed differently, for example, such that the outer conductor bushes 7 are an integral part of the outer conductor 1, for example, are materially connected to the outer conductor 1. In this case, only the inner conductor terminals 6 are then inserted into these outer conductor bushes 7, and held by way of dielectric holding devices 8 (for example disc-shaped dielectric (insulating) holding devices 8) (FIG. 2). It can also be seen from the exploded illustration according to FIG. 1 that the outer conductor 1 is penetrated centrally in its longitudinal direction L by a receiving bore 9, which in the exemplary embodiment shown is cylindrical.

In a coaxial arrangement, an inner conductor 11 is arranged in the receiving bore 9, in the embodiment shown, the so-called first primary or main inner conductor 11 which extends through the outer conductor 1 between the inner conductor connecting pieces 6. The inner conductor can be held in the coaxial couplers 5 via separate dielectric holding elements with respect to the outer conductor 1 or via the inner conductor connecting pieces 6. In this Case is designed as an insulator holding device preferably adjacent to the front ends la in the outer ßenleitergehäuse 1 'arranged so as not to collide with the second inner conductor to be discussed below.

Finally, a second or secondary inner conductor 13 is also provided, which is designed semicylindrical in the embodiment shown. As can be seen in particular from the sectional view according to FIGS. 2 and 3, this second inner conductor 13 is arranged in the spacing space 15 between the first inner conductor 11 and the outer conductor 1, that is, in the spacing space in the outer conductor housing 1 ', which is located between the surface IIa of the inner conductor 11 and the inner wall surface 9a of the receiving bore 9 is formed in the outer conductor 1.

As is apparent from the drawings, the second inner conductor 13 is provided or connected to a branch line 17, which preferably radially, that is, preferably perpendicular to the extension direction E of the inner and / or outer conductor, in the embodiment shown perpendicular thereto.

The longitudinal and extension direction E of the first inner conductor 11 preferably coincides with the axial longitudinal axis L of the outer conductor 1 or of the outer conductor housing 1 '. That is to say the central axis X passing through the entire HF power divider, which is shown in phantom in FIG. 2, simultaneously represents the central longitudinal and extension axis E for the first inner conductor 11. It is simultaneously the concentric central axis for the cylindrical receiving bore 9 in the exemplary embodiment shown in the outer conductor 1. The mentioned inner conductor 13 In this case, it generally runs parallel to this central axis X, and thus parallel to the first inner conductor 11.

This branch line 17 extends through an outlet hole 19 in the outer conductor housing 1 ', so that at this point another Koaxialkuppler 5 can be mechanically and electrically connected, again with an inner conductor terminal 6, an outer conductor 7 and a dielectric holding device 8, about which Inner conductor 6 is kept at a distance and while avoiding a galvanic contact with the outer conductor 1 and guided.

Finally, it can also be seen from the sectional views that the second inner conductor 13 in the exemplary embodiment shown is provided with two preferably radially or perpendicular to the extension direction E extending bolt-shaped or bolt-like adjusting means 21, which preferably in the embodiment shown from an electrically non-conductive and / or dielectric material and thereby pass through appropriate adjustment and / or holding holes 23 in the outer conductor housing 1 ', that is at least protrude here and preferably outwardly overhang the outer conductor housing to make this a radial adjustment of the second inner conductor 13, whereupon is still received.

By means of such an arrangement, therefore, an RF power divider (or summer) is formed, which in the embodiment shown comprises three coaxial couplers 5, namely 5a, 5b and 5c, namely one with a coxial coupler 5a which forms the input port 5'a the other end of the outer conductor 1 provided further Koaxialkuppler 5b, which for example represents the first output port 5'b for the first consumer and with a third coaxial coupler 5c, which forms the port 5'c or the output for the second inner conductor 13.

By means of such an arrangement, in principle, an RF power division can be effected when, for example, an RF power is supplied to the first connection or input port 5'a, this RF power then being distributed via the first and second inner conductors 11, 13 and the second and third port gate 5b and 5c is supplied, according to the principle of series branching. The characteristic impedance Z present at the input is split into the characteristic impedance ZI at the second connection port 5b and the characteristic impedance Z3 at the third port port, the sum of the divided characteristic impedances remaining constant. In other words, therefore, the sum of both series impedances broadband (approximately) gives the system impedance, despite the variable power split. The length of the coupling zone K (and thus the length of the second inner conductor 13) is preferably greater than λ / 10, based on the lower limit frequency of the frequency band to be transmitted or the frequency to be transmitted.

Likewise, a summation of the power can be carried out by means of the described RF power divider, namely if a corresponding RF power is fed to the second and third port ports 5b and 5c, which can then be tapped at the first port port 5a. In order now to enable a different power distribution or summation, the relative position of the second inner conductor 13 relative to the first inner conductor and / or the outer conductor 1 can be changed.

For this purpose, the second inner conductor corresponding to the double arrow representation 29 to the first inner conductor 11 to or radially away from this example, whereby the distances and thus the first and the second inner conductor associated wave resistance change accordingly, but remain constant in the sum. Accordingly, the high-frequency power distribution between the second and third Anschlusstor changes. In other words, in order to change the power distribution between a first and second consumer, the first and / or the second inner conductor 11 or 13 is displaced relative to one another (in the exemplary embodiment shown, the second inner conductor 13 opposite the first inner conductor 11) with at least one radial component to change the distance between the two.

As a result, it is possible to set any desired and, above all, variable power distribution (for example in a range from 380 MHz to 2700 MHz in the form of a power division of 6 dB-20 dB) within wide limits, and this with the simplest means.

In the exemplary embodiment shown, the second coaxial conductor is designed to be semicylindrical in cross-section transversely to its longitudinal or first recording direction L or E, so that it has an exact coaxial position relative to the inner and / or outer conductor in a central or intermediate layer to the cylindrical inner surface 9a of the receiving bore 9 of the outer conductor 1, forms.

In the illustrated embodiment, the branch or connecting line 17, which is electrically connected to the second inner conductor 13, is usually galvanically connected, designed so that it is aligned with the associated inner conductor terminal 6 of the third coaxial coupler 5, 5c, ie in its Axialrichtung is relatively displaceable, so almost forms a telescopic connection. Because the relative change in distance in the radial direction of the second inner conductor relative to the first inner conductor 11 and thus also to the outer conductor 1 takes place in a direction corresponding to the double arrow 29, which is parallel to the longitudinal extent 17 ¹ , ie the central axis 17 'of the branching or branch line 17 , In an appropriate orientation, the inner conductor connection or the inner conductor connection piece 6 of the third coaxial coupler 5c adjoins this partially in an overlapping arrangement. As a result, a galvanic tap of the RF signal is always ensured at this Koaxialkuppler 5.

Likewise, the axial extensions through the bores 23 in the outer conductor housing 1 'and the therein axially displaceably guided, in the illustrated embodiment rod or bolt-shaped adjusting means 21 parallel to the adjustment 29 and thus parallel to the axial extension direction 17' of the connection or branch line 17 arranged so that the second inner conductor 13 corresponding to the adjustment 29 is displaceable and thus adjustable. This results in that when performing a radial adjustment in the cross-sectionally cylindrical design of the second inner conductor 13 may not necessarily remain concentric to the inner and / or outer conductor, but in principle is irrelevant.

Based on the following schematic cross-sectional representations to show only that the second outer conductor may also have in relation to the inner or outer conductor of different shapes and designs.

With reference to Figure 4a, the embodiment according to Figures 1 to 4 is shown in a schematic repetition. FIG. 4b shows that the second outer conductor can have a much larger curvature in cross-section, ie a shape in which the entire cross-sectional shape is never concentric with the inner and / or outer conductor, that is to say the surface 9a of the receiving bore in FIG Outer conductor 1 can be.

In the schematic cross-sectional representation according to FIG. 4 c, a variant is shown in which the second inner conductor is designed plate-shaped in cross-section.

In the variant according to FIG. 4d, the inner conductor has a U-shaped cross-section, so that a receiving space 25 is formed between the two side legs 13.1 and the connecting leg 13.2, at least in some relative adjustment positions of the second inner conductor 13 with respect to the first inner conductor 11 the first inner conductor 11 can more or less dip into this receiving space 25. With reference to FIG. 4d also shown only schematically that the first inner conductor 11 may also have different cross-sectional shapes and not necessarily cylindrical in cross-section must be designed, but may for example have a polygonal cross-section, in particular a square cross-section. In addition, the outer conductor 1 and the outer conductor housing 1 'is tubular.

By way of example, it is shown on the basis of FIG. 4e that the second inner conductor 13 is designed to have a V-shaped cross-section with two diverging leg sections 13.3.

Based on the previous embodiments, only the second inner conductor is adjustable relative to the first inner conductor and / or relative to the outer conductor.

In principle, however, arrangements are conceivable in which, for example, the second inner conductor is not adjustable in relation to the outer conductor, wherein only borrowed the first inner conductor is arranged and held radially adjustable relative to the outer conductor and / or the second inner conductor. This could be realized, for example, in that the coaxial couplers 5a, 5b located opposite the outer conductor housing 1 'are mutually adjustable in their relative position to the outer conductor in the radial direction, so that the first inner conductor 11 held and guided therebetween is also relatively adjustable in the direction of the double arrow 29, So on the second inner conductor to or from this way. In this case, the distance between the first inner conductor 11 and the inner surface 9a of the receiving bore 9, ie the distance to the outer conductor 1, likewise changes. Finally, a different power distribution can also be effected if, for example, an arrangement for the second inner conductor according to the embodiment of FIGS. 5a and 5b is realized. The exemplary embodiment is shown in a schematic cross-sectional representation transversely to the longitudinal extent L of the RF power unit. In this variant, preferably the first inner conductor 11 is not adjustable in relation to the outer conductor 1 in its radial position, although it could also be arranged adjustable.

In this embodiment, the second outer conductor 13 consists of a tube, preferably with a hollow cylinder-shaped design, said second outer conductor 13 has a diameter dimension with a receiving space 25, which compared to the outer diameter of the first inner conductor and so large compared to the inner diameter of the outer conductor 1 is so small that the thus formed tubular second inner conductor 13 according to the Doppelpfeildarstel- ment 29 relative to the first inner conductor 11 and the outer conductor 1 is adjustable, and that between the second inner conductor 13 and the first inner conductor 11 on the one hand and between the second inner conductor 13 and the outer conductor 1 to the other no galvanic contacting is effected.

5a, an adjustment position of the second outer conductor 13 is shown, whereby the minimum distance to the first inner conductor 11 as well as to the outer conductor 1 is reduced and thereby a different power distribution or power summation is effected.

With reference to FIGS. 6a and 6b, two different che Verstellvarianten the second conductor 13 in relative position to the first conductor 11 and / or to the inner wall surface 9a of the receiving bore 9 in the outer conductor 1 shown. Here, the cross section of the first inner conductor 11 is designed, for example, semi-cylindrical, ie has a flattening on the side at which the distance between the positions shown in FIG. 6a and the position shown in FIG. 6a is adjusted during the adjustment of the second inner conductor 13 the second and the first inner conductor 13, 11 is reduced, so here to provide a larger adjustment space 25. This also shows that the cross-sectional shape of the first inner conductor 11 can be formed differently in many areas. Finally, it must be mentioned that the cross-sectional shape of the second inner conductor 13, even if it is formed in the form of a waveguide tube, does not have to be hollow-cylinder-shaped, but can have, for example, an n-polygonal cross section or an oval cross section, which also results in a larger adjustment range of the second inner conductor 13 relative to the first inner conductor 11.

In cases where the second inner conductor 13 is configured as a tubular inner conductor, the inner first inner conductor 11 is usually held by the dielectric holding members adjacent to the beginning and end of the second inner conductor 13 having a shorter length than the first one Inner conductor 11, are positioned in the receiving bore 9 in the outer conductor housing 1 '. It would also be possible for the first inner conductor 11 to be held solely by the inner conductor connections or the inner conductor connection piece 6 of the coaxial couplers 5a and 5b alone. In all these explained cases, the adjustment of the second inner conductor has been effected via the adjusting and holding means 21. In this case, suitably mechanically suitable adjusting means can be used and used, which are of no significance for the realization of the invention. Preferably, such adjusting means should be used, in which the relative position of the second inner conductor can be adjusted as finely as possible with respect to the first inner conductor and / or the outer conductor, since even minimal radial position changes lead to a noticeably different power distribution.

In order to avoid galvanic contacting in any case with the different adjustment possibilities between the first and second inner conductors 11, 13 or between the second inner conductor 13 and the outer conductor 1 or the outer conductor housing 1 ', either the corresponding maximum relative adjustment movement of the Inner conductor in relation to each other and / or limited to the boundary wall of the outer conductor 1 by mechanical limitations or attacks, or alternatively or in addition to the corresponding parts are coated with an insulating or dielectric layer to secure appropriate galvanic contacts between the mentioned elements avoid.

As has been discussed, the length of the coupling zone K is preferably about λ / 10, where λ represents the cutoff frequency. However, the coupling zone can also be greater than λ / 11 or, for example, λ / 12, etc.

The preferred values for the length of the coupling zone K are such that the coupling zone is preferably greater than λ / 10 - 40% <K <λ / 10 + 40%.

However, the preferred values can also satisfy the following inequalities with regard to the length of the coupling zone K, namely λ / 10 - 30% <K <λ / 10 + 30% or

λ / 10 - 20% <K <λ / 10 + 20% or

λ / 10 - 10% <K <λ / 10 + 10%. In other words, the length of the coupling zone K preferably has the following values:

0.6 · λ / 10 <K <1, 4 · λ / 10 or

0.7 · λ / 10 <K <1, 3 · λ / 10 or

0.8 · λ / 10 <K <1.2 · λ / 10 or

0.9 · λ / 10 <K <1, 1 · λ / 10 or

K> λ / 10 or λ / 11.

Claims

Claims:

1. Non-directional high-frequency power divider with the following features:

with an outer conductor (1) and / or outer conductor housing (1 ' ⁾ ,

with a first inner conductor (11),

the first inner conductor (11) runs in the outer conductor (1) or in the outer conductor housing ( ¹ ),

with a second inner conductor (13),

the second inner conductor (13) extends in the spacer space (15) which is formed between the first inner conductor (11) and the outer conductor (1) or the outer conductor housing (1 '),

the second inner conductor (13) is electrically connected to or provided with a branching line (17) running away therefrom;

the branch line (17) sets in the middle between see the two ends of the second inner conductor (13),

characterized by the following further features: the second inner conductor (13) is at a distance from the first inner conductor (11) and / or in its Distance to the outer conductor (1) or to Außenleitergehäu- se (1 ') to effect a variable power distribution relatively adjustable and / or positionable.

2. RF power divider according to one of claim 1, characterized in that the length of the first and / or second inner conductor (11, 13) and thus the length of the coupling zone (K) between the first and the second inner conductor (11, 13) is greater than 0.6 · λ / 10 and / or less than 1.4 · λ / 10, where λ represents the lower limit frequency.

3. RF power divider according to claim 1 or 2, characterized in that the length of the first and / or second inner conductor (11, 13) and thus the length of the coupling zone (K) between the first and the second inner conductor (11, 13) greater than 0.7 · λ / 10 and / or less than 1.3 · λ / 10 or in particular greater than 0.8 · λ / 10 and in particular less than 1.2 · λ / 10 or greater than 1.1 · λ / 10 and / or less than 1.1 ^■ λ / 10, where λ represents the lower limit frequency-

4. RF power divider according to one of claims 1 to 3, characterized in that the length of the first and / or second inner conductor (11, 13) and thus the coupling zone (K) between the first and the second inner conductor (11, 13) is greater than λ / 10 or greater than λ / ll, based on the lower limit frequency.

5. RF power divider according to one of claims 1 to 4, characterized in that the outer conductor (1) or the

Outer conductor housing (l ¹ ) comprises two opposite or mutually offset connection ports (5a, 5b), to each of which a coaxial line connected or is connectable, and that between these connection gates (5a, 5b), a third connection gate (5c) is arranged, via which a further coaxial connection line is connected or connectable, wherein the third connection gate (5c) comprises an inner conductor connection (6), which with the second inner conductor (13) is electrically connected.

6. RF power divider according to one of claims 1 or 5, characterized in that the first inner conductor (11) relative to the outer conductor (1) or a receiving bore (9) in the outer conductor (1) or in the outer conductor housing (l ¹ ) arranged concentrically is, and that the second inner conductor (13) in the radial direction (29) or with a radial component is adjustable and positionable.

7. HF power divider according to one of claims 1 to 6, characterized in that the outer conductor (1) or its outer conductor housing (1 ') has an outlet bore (19), which is galvanically non-contact by a branch line (17) interspersed with the second inner conductor (13) is connected or part of the second inner conductor (13).

8. RF power divider according to claim 7, characterized in that the branch line (17) designed bolt-shaped and fixed to the second inner conductor (13) connected or materially connected.

9. RF power divider according to one of claims 1 to 8, characterized in that the branch line (17) axially and / or telescopically displaceable to an inner conductor connecting piece (6) of a coaxial coupler (5c) is designed.

10. RF power divider according to one of claims 1 to 9, characterized in that further at least one adjusting and / or holding means (21) is provided, preferably made of electrically non-conductive and / or dielectric material, which the outer conductor (1 ) or the outer conductor housing (1 ') passes through in a corresponding outlet bore (19), via which the position of the second inner conductor (13) relative to the first inner conductor (11) and / or the outer conductor (1) or the inner surface ( 9a) of the receiving bore (9) in the outer conductor housing (Ι ') is variable and adjustable.

11. HF power divider according to one of claims 1 to 10, characterized in that the second inner conductor (13) has a semi-cylindrical cross-sectional configuration transversely to its extension and / or longitudinal direction (L), and is arranged so that its concave portion of the first inner conductor (11) and its convex shaped portion of the inner wall surface (9a) of the outer conductor (1) faces.

12. RF power divider according to one of claims 1 to 11, characterized in that the second inner conductor (13) in cross-section U-shaped or V-shaped or plate-shaped.

13. RF power divider according to one of claims 1 to 12, characterized in that the second inner conductor (13) is tubular and parallel to the first Innenlei- ter (11) and transverse or radial relative to this is relatively adjustable, wherein the first Inner conductor (11) within the second inner conductor (13) extends.

14. RF power divider according to claim 13, characterized in that the first inner conductor (11) via insulating and / or consisting of a dielectric material retaining elements relative to the outer conductor (1) or the outer conductor housing (1 ') is held, namely adjacent to the end of the second inner conductor (13), and / or that the first inner conductor (11) is held by dielectric holding elements (8) provided in the connection couplers (5a, 5b, 5c) for fixing the inner conductor connection (6). hen are.