JPH0432802Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a waveguide flange converter used to connect two waveguides having different types of flanges to each other.

(Prior Art) FIG. 2a is a front view showing an example of a conventional waveguide flange converter, and FIG. 2b and c are respectively a right side view and a left side view thereof. In these figures, 1
2 indicates a square flange, 2 indicates a round flange, and 3 indicates a straight waveguide section. The square flange 1 has a connecting hole 11a.
~11d is the connecting hole 12a~ in the round flange 2
12f are each open. FIG. 3 is a perspective view of a waveguide connection structure in which the waveguides 4 and 5 are connected by the waveguide flange converter of FIG. In manufacturing the conventional product shown in FIG. 2a, many steps are required, such as manufacturing a flange blank, cutting the waveguide, connecting the flange blank and waveguide portion by brazing or welding, and plating.

(Problems to be Solved by the Invention) Conventional waveguide flange converters require many steps to manufacture, resulting in high manufacturing costs and long manufacturing times. In addition, in conventional waveguide flange converters consisting of a square flange, a straight waveguide section, and a round flange, if the straight waveguide section is made extremely short to reduce size and weight, screws, nuts, etc. The flange fasteners will not fit, making it difficult to connect the waveguide.

Therefore, in conventional waveguide flange converters,
In addition to the straight waveguide required at the flange part, a straight waveguide part with a length longer than a certain value necessary for inserting screws, nuts, etc. must be interposed, resulting in a long waveguide length. Therefore, the conventional waveguide flange converter inevitably has the disadvantage that insertion loss increases, especially in high frequency bands.

Therefore, an object of the present invention is to provide a waveguide flange converter that is inexpensive and has low insertion loss.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the waveguide flange converter provided by the present invention includes first and second flanges having first and second types of flanges, respectively. It consists of a plate-shaped body interposed between the waveguides and connecting the two waveguides, and a radio wave propagation opening having the same shape as the radio wave propagation opening of both the waveguides is provided in the center of the plate-shaped body. An opening is formed in the peripheral edge of the plate-shaped body, and when the opening of the plate-shaped body is aligned with the openings of the waveguides, a coupling hole that matches the coupling hole of the flanges of the first and second types is formed at the peripheral edge of the plate-shaped body. It is characterized by being open to the

(Example) Next, an example of the present invention will be described with reference to the drawings.

FIG. 1a is a left side view of one embodiment of the present invention, and FIG. 1b is a waveguide connection structure in which the waveguides 4 and 5 shown in FIG. 3 are connected in the embodiment of FIG. 1a. FIG. This embodiment 7 consists of one metal plate. An opening 23 for radio wave dissemination is provided in the center of this embodiment 7, and coupling holes 21a to 21d for square flanges and coupling holes 22a to 22f for round flanges are provided at the periphery so that they do not interfere with each other. It is located in That is, in this embodiment, if a circular flange is connected to one surface, a square flange can be connected to the other surface. Since the coupling holes on both sides are located at positions where they do not interfere with each other, as shown in FIG. 1b, by using this embodiment, waveguides 4 and 5 having different flange types can be easily connected.

Although the embodiment shown in FIG. 1a is an effective method for connecting a round flange and a square flange, the present invention can also be applied to various other types of flanges.

(Effects of the invention) As explained above, the waveguide flange converter of the present invention has a simple structure consisting of a single plate-like body, unlike the conventional waveguide flange converter manufactured through multiple steps. Compared to pottery, it can be manufactured with extremely few steps, so it can be manufactured at low cost and in a short period of time. In addition, since the waveguide flange converter of the present invention is constructed from a single plate-like body, it can be made smaller and lighter, and the waveguide line length can be shortened, resulting in insertion loss especially at high frequencies. is small.

[Brief explanation of drawings]

Fig. 1a is a left side view of an embodiment of the present invention, Fig. 1b is a perspective view showing a waveguide connection structure connected according to the embodiment, and Fig. 2a is a diagram of a conventional waveguide flange converter. Front view, Figures b and c are right and left side views of the waveguide flange converter, Figure 3 is the second waveguide flange converter.
Figure a is a perspective view of a waveguide connection structure connected by the waveguide flange transducer of Figure a; 1, 41... Square flange, 2, 52... Round flange, 3... Straight waveguide section, 4, 5... Waveguide, 7... Example, 11a-11d, 12a-1
2f, 21a to 21d, 22a to 22f... Connection holes into which fastening screws are inserted.

Claims (1)

[Scope of utility model registration request] It consists of a plate-shaped body that is interposed between first and second waveguides having flanges of the first and second types, respectively, and connects the two waveguides. An opening for radio wave propagation having the same shape as the opening for radio wave propagation of both waveguides is opened, and when the opening of the plate-shaped body is aligned with the opening of both of the waveguides, the first and second types are formed. A waveguide flange converter characterized in that a coupling hole matching a coupling hole of the flange is formed in the peripheral edge of the plate-like body.