JPS62141801A - Waveguide circuit - Google Patents

Abstract

PURPOSE:To constitute a waveguide circuit without using a flange as the junction member by laminating a plate body having a through hole and a plate body having a projecting part which has a 45 deg.-angled slope. CONSTITUTION:A plate body 10 consists of a metal and has a T-shaped groove 1, which corresponds to the waveguide of the waveguide circuit, on a surface 3 and has a through hole 2 connected vertically to the groove 1. A plate body 12 has a metallic groove 7, which corresponds to the metallic groove 1 formed on the surface of the plate body 10, on a surface 6, and a projecting part 5 is provided on the bottom of the metallic groove 7. Plate bodies 12 and 10 are laminated and fixed so that a slope 4 of the projecting part 5 forms the upper wall of the through hole 2.

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a υ-guide T & tube circuit in which a curved waveguide is curved. This invention relates to a waveguide circuit formed by dipping layers of plates having an unusual structure.

(Prior art) Conventional curved waveguide circuits include a structure in which a tubular waveguide R with a rectangular folded surface is bent as shown in Fig. 6, and a structure in which a tubular waveguide R with a rectangular folded surface is bent, as shown in Fig. VJ7. Bent waveguide α on the surface 1m of body 2o
There is a structure that has a groove corresponding to the front and a lid 19 made of four gold plates on top of the front (ai).

(Problems to be Solved by the Invention) Among the conventional waveguide circuits described above, the waveguide circuit shown in FIG. A flange 21 is provided on the waveguide and the connection is made with screws or the like, which increases the size of the waveguide itself. In addition, although the waveguide circuit shown in FIG. 7 can easily be configured with a waveguide having a planar structure parallel to the surface of the metal plate 200, the end of the waveguide can be formed into a plate without impeding impedance matching. It cannot be removed by bending it towards the surface. In addition, the seventh
The waveguide circuit shown in the figure is not suitable for stacking layers to form a laminated structure.

(Means for Solving the Problems) The waveguide circuit of the present invention has a first groove in which a groove corresponding to a waveguide and a through hole communicating perpendicularly to the groove are formed on the surface of a plate. and a second plate whose surface is provided with a protrusion having an inclined surface of about 45°,
The plate body and the second plate body are stacked with the protrusion part inserted into the groove part, and the inclined surface forms an upper wall or a lower wall of the through hole.

(Example) Briefly, the present invention will be explained with reference to the drawings.

FIG. 1 is a perspective view showing a specific example of the first plate body of the waveguide circuit according to the present invention, and FIG. 2 is a perspective view showing a specific example of the first plate body of the waveguide circuit according to the present invention.
A perspective view showing a specific example of the plate body. Plate 10 in FIG.
is made of metal and has a T-shaped groove 1 corresponding to a waveguide of a waveguide circuit on its surface 3, and a hole 2 communicating perpendicularly to the groove 1. @2 Second plate body 9 shown in Figure 2
is provided with a protrusion 5 having a substantially trapezoidal cross section and having an inclined surface 4 inclined at 45° on a surface 6. First plate 1 shown in FIG.
By combining the surface 3 of 0 and the surface 6 of the second plate 12 of FIG. J2, a circuit equivalent to the waveguide circuit of FIG. 6 can be obtained.

FIG. 3 is a perspective view showing another specific example of the second plate of the waveguide circuit according to the present invention. This plate body 12 has a metal groove 7 corresponding to the metal groove 1 formed on the surface 3 of the first plate body 10.
is provided on the surface 6 of the second plate 9, and the protrusion 5 is provided on the bottom surface of this metal groove 7. FIG. 4 is a cross-sectional perspective view showing one embodiment of the present invention, in which the second plate body 12 and the first plate body 10 are connected to the inclined surface 4 of the protrusion 5, as shown in this figure.
is fixed to the @ layer so as to form the earthen wall of the through hole 2, and is equivalent to the waveguide circuit shown in FIG.

FIG. 5 is a cross-sectional perspective view showing another embodiment of the present invention.

In this embodiment, plates 9, 1) to 13 are laminated. Plate 1) is piece 1) 1! l (at the bottom of the figure)
The surface structure of the plate shown in FIG. 3 is formed on the other side (upper side of the figure). Also,
The plate 13 has the surface structure of the first plate shown in FIG. 1 formed on one side (upper side of the figure), and the surface structure of the second plate shown in FIG. 3 formed on the other side (lower side of the figure). In this embodiment, three layers of waveguides are connected by through holes 2, and these through holes 2 are faced with an inclined surface 4.

According to the method of the embodiment shown in FIG. 5, by arbitrarily combining the plates, it is possible to form a waveguide of a desired shape without deteriorating impedance matching.

Note that the protrusion 5 having a substantially trapezoidal cross section facilitates mutual alignment of the plates 1d when the plates are assembled. Therefore,
Each of the embodiments described above is particularly suitable for millimeter wave band circuits that require high precision. Further, since the various plates used in the examples can be easily manufactured with high precision by ordinary machining, these IFis can be manufactured in a state-of-the-art manner.

(Effects of the invention→ As explained above, since the waveguide circuit of the present invention does not use seven flanges as a joining member, the structure does not become complicated and can be made smaller.In addition, impedance matching seen in the conventional example can be made smaller. Without deterioration, the waveguide circuit of the present invention can adopt various bent configurations, and the range of application is extremely wide.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a specific example of the first plate of the waveguide circuit of the present invention, FIG. 2 is a perspective view showing a specific example of the second plate of the waveguide circuit of the present invention, FIG. 3 is a perspective view showing another specific example 10 of the second plate of the waveguide circuit of the present invention, and FIG. 4 shows the first plate of FIG. 1 and the second plate of FIG. 3. 5 is a cross-sectional perspective view of another embodiment of the present invention, FIG. 6 is a perspective view of a conventional curved waveguide circuit, and FIG. 7 is a perspective view of a conventional curved waveguide circuit. FIG. 1 is a perspective view of a conventional planar structured waveguide circuit. t, 7. 8... Groove, 2... Housing 1) 1 hole, 3,
6...Surface, 4...Slope, 5...Protrusion, 9.
12... Second plate body, 10... First plate body. Agent Patent Attorney Shin Honjo Valve tube 3 Figure 4 Figure 5

Claims (3)

[Claims] (1) A first plate in which a groove corresponding to a waveguide and a through hole communicating perpendicularly to the groove are formed on the surface of the plate, and a protrusion having an approximately 45° inclined surface. a second plate provided on the surface, the first plate and the second plate
The waveguide circuit is characterized in that the plate bodies are stacked with the protrusion part inserted into the groove part, and the inclined surface forms an upper wall or a lower wall of the through hole. (2) A groove corresponding to the groove formed on the surface of the first plate is provided on the surface of the second plate, and the protrusion is formed on the bottom surface of the groove of the second plate. 2. The waveguide circuit according to claim 1, wherein the waveguide circuit is provided in a waveguide circuit as claimed in claim 1. (3) A groove corresponding to the groove formed on the surface of the first plate is provided on the surface of the second plate, and the protrusion is located at one end of the groove of the second plate. 2. The waveguide circuit according to claim 1, wherein the groove is provided with a through hole communicating with the groove at the other end thereof.