JPH0145121Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a power combiner/demultiplexer that combines or demultiplexes high-frequency power of different frequencies without affecting each other.

(Prior art) As shown in FIG. 2, a conventional power combiner/brancher of this type has a coaxial connector 4 in the middle of a stripline type coaxial coupling line 3 consisting of a center conductor 1 and an outer conductor 2. A semi-coaxial resonator 5 is connected to the coaxial connector 4 by a coaxial connector 6 on the bottom surface 5A of the semi-coaxial resonator 5 in a plug-in manner. The center conductor of the coaxial connector 6 is coupled to the inside of the semi-coaxial resonator 5 through a first input/output coupling element 7 . A resonance rod 8 is provided inside the semi-coaxial resonator 5 protruding from its bottom surface 5A, and a heat sink 9 having fins 9A is provided protruding from the outer surface of the semi-coaxial resonator 5 in correspondence with the resonance rod 8. . A frequency adjuster 10 is screwed into the semi-coaxial resonator 5 from its upper surface 5B and projects therefrom. Further, a second input/output coupling element 11 is provided on the upper surface 5B of the semi-coaxial resonator 5, so that signals from other devices can be input and output.

When inserting and connecting the coaxial connector 6 of the semi-coaxial resonator 5 to the coaxial connector 4 of the coaxially coupled line 3, a plurality of guide rods are provided on the outer conductor 2 of the coaxially coupled line 3 to facilitate positioning of the insertion. 12 is erected, and correspondingly the flange 1 of the semi-coaxial resonator 5
A guide hole 14 is formed in each of the coaxial connectors 3, and by passing each guide rod 12 through each guide hole 14, the coaxial connector 6 is guided to the position of the coaxial connector 4 by its guiding action to perform insertion and connection. I was getting used to it. After connection, locking was performed using a lock nut 15 screwed onto each guide rod 12.

In such a power combiner/brancher, the length of the resonant rod 8 is set to be close to 1/4 of the resonant frequency, so the short surface becomes the bottom surface 5A of the semi-coaxial resonator 5, and as a result, Current concentrates on the bottom surface 5A and generates heat due to heat loss, which thermally expands the resonance rod 8 and affects the resonance frequency. Since the heat generation is localized, the problem has conventionally been solved by providing a heat radiator 9 as shown in the figure.

(Problem to be solved by the invention) However, the radiator 9 and the plurality of guide rods 1
2, production costs will increase,
Another problem was that the overall structure became larger.
The purpose of this invention is to provide a power synthesis and
Our goal is to provide a duplexer.

(Means for solving the problem) The structure of the present invention to achieve the above purpose is as follows:
To explain with reference to FIG. 1 corresponding to the embodiment,
In the present invention, the coaxial coupled line 3 and the semi-coaxial resonator 5 are
In a power combiner/brancher electrically connected by a coaxial connector 6 provided on the bottom surface 5A of the semi-coaxial resonator 5 and a coaxial connector 4 provided in the middle of the coaxial coupled line 3, A cavity 8C having an opening 8A on the bottom surface 5A and a closed inner end 8B is provided in the resonance rod 8, and a cavity 8C corresponding to the position of the resonance rod 8 is provided on the outer conductor 2 of the coaxial coupled line 3. It is characterized in that a positioning/radiator 16 is provided in a protruding manner and is fitted into the cavity 8C in the resonance rod 8 in a contacting state.

(Function) In such a power combiner/brancher, when connecting the semi-coaxial resonator 5 to the coaxially coupled line 3, the positioning/radiator 16 provided on the side of the coaxially coupled line 3 is used.
When the resonator rod 8 is brought close to the semi-coaxial resonator 5 side by entering into the cavity 8C, the coaxial connector 6 on the bottom surface 5A of the semi-coaxial resonator 5 is moved by the guiding action of the positioning/radiator 16. It becomes possible to easily connect to the coaxial connector 4 of the coaxial coupling line 3. Also,
The heat of the resonant rod 8 is radiated to the coaxial coupling line 3 side via this positioning/radiator 16.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to FIG. Note that parts corresponding to those in FIG. 2 described above are designated by the same reference numerals. In the power combiner/brancher of this embodiment, the resonant rod 8 of the semi-coaxial resonator 5 has a cavity 8C having an opening 8A on the bottom surface 5A and a closed tip 8B. is provided. The outer conductor 2 of the coaxial coupled line 3 has a cavity 8C in the resonant rod 8 corresponding to the position of the resonant rod 8.
A positioning/radiator 16 is provided in a protruding manner and is fitted into the housing in contact with the housing. Further, a stand 17 is installed on the outer conductor 2 adjacent to the semi-coaxial resonator 5, and an arm 18 is rotatably supported on the top of the stand 17, and the arm 18 is provided with a direction orthogonal to the stand 17. A presser screw 19 is screwed through, and a presser 20 is rotatably supported at the tip of the presser screw 19.

In such a power combiner/brancher, when connecting the semi-coaxial resonator 5 to the coaxial coupling line 3, the arm 18 is rotated so that the holding tool 20 faces the opposite side from the illustrated state. The positioning/radiator 16 is inserted into the cavity 8C of the resonant rod 8 in a state where there are no obstacles, and in this state the semi-coaxial resonator 5 is pushed down toward the coaxial coupling line 3 side. Then, positioning and heat sink 1
Due to the guiding action of the coaxial connector 6, the coaxial connector 6 can be easily connected to the coaxial connector 4. in this case,
It is preferable to provide rotation prevention means such as a key and a keyway or rotational direction positioning means on the resonant rod 8 and the positioning/radiator 16, since this facilitates the alignment of both the coaxial connectors 4 and 6.

When the connection is completed, return the arm 18 to the illustrated position, turn the holding screw 19, and use the holding tool 20 to attach the upper surface 5B of the semi-coaxial resonator 5 corresponding to the coaxial connectors 4 and 6.
Hold down to prevent escape.

In addition, in cases where the coaxial connectors 4 and 6 are locked with a connecting nut, etc., the stand 1
7. The arm, presser screw 19, presser 20, etc. can be omitted.

(Effects of the invention) As explained above, in the power combiner/brancher according to the invention, the resonant rod installed upright from the bottom plate in the semi-coaxial resonator is shaped like a cavity with an opening on the bottom plate side.
Since the positioning/radiator installed upright on the outer conductor of the coaxial coupled line is fitted into the cavity of this resonant rod, the positioning/radiator can be used as a guide when connecting the semi-coaxial resonator to the coaxial coupled line. By this action, both coaxial connectors can be easily aligned. Moreover, the heat of the resonant rod can be easily radiated to the coaxial coupling line side via this positioning/radiator. Further, according to the present invention, there is no need to erect a plurality of guide rods around the semi-coaxial resonator, and the structure can be simplified and downsized, and costs can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an embodiment of a power combiner/brancher according to the present invention, and FIG. 2 is a longitudinal sectional view of a conventional power combiner/brancher. 2...External conductor, 3...Coaxial coupling line, 4, 6
... Coaxial connector, 5 ... Half-coaxial resonator, 8 ... Resonance bar, 8A ... Opening, 8B ... Inner end, 8C ...
Cavity part, 16...Positioning and radiator.

Claims (1)

[Scope of utility model registration request] A power combination in which a coaxial coupled line and a semi-coaxial resonator are electrically connected by a coaxial connector provided on the bottom of the semi-coaxial resonator and a coaxial connector provided in the middle of the coaxial coupled line.・In the duplexer,
A cavity having an opening on the bottom surface and a closed inner end is provided in the resonant rod, and the outer conductor of the coaxial coupled line has the resonant rod inside the resonant rod corresponding to the position of the resonant rod. A power combiner/brancher characterized by a protruding positioning/radiator that is fitted into a cavity in contact with the cavity.