JPH0653711A - Waveguide line - Google Patents

Abstract

PURPOSE:To facilitate the processing and to improve the productivity by providing two lines of throughholes used to connect conductor layers, selecting an interval of the throughholes of each line smaller than an interval equivalent to a cut-off wavelength and selecting the interval of the two lines for the through holes to be a prescribed width of the waveguide. CONSTITUTION:Two lines of plural throughholes 4, 4,... are provided for a dielectric base 1 including conductor layers 2, 3. An interval (a) of the throughholes of each line is selected to be an interval smaller than a cut-off wavelength of a relevant electromagnetic wave. Furthermore, an interval B of the lines of the throughholes 4 is selected in relation to a frequency of an electromagnetic wave. Thus, upper lower layers 2, 3 are connected by the lines of the throughholes 4 arranged at the smaller interval than the cut-off wavelength and a wall face of a square waveguide part 7 is formed approximately to form the waveguide line. In the Figure, a caption A indicates part of the waveguide line in the lengthwise direction. Thus, the electromagnetic having a prescribed frequency is surely propagated in a prescribed direction while being guided through the throughholes 4,4,... formed in the two lines in the base 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waveguide line, and more particularly to a waveguide line for a microwave band or a millimeter wave band formed in a dielectric substrate.

[0002]

2. Description of the Related Art A transmission circuit for transmitting an electromagnetic wave along a substrate has been put into practical use by making some attempts such as a strip line and a surface wave line.

[0003]

However, in each of the conventional examples, the integration with the substrate is not always sufficient. Therefore, after forming a transmission circuit for electromagnetic waves separately, There is the inconvenience that productivity is poor because there is the inconvenience of connecting it again to a predetermined substrate.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a waveguide line in which the disadvantages of the conventional example are improved and, in particular, the waveguide substrate is integrated with a dielectric substrate and the productivity is improved.
To that end.

[0005]

According to the present invention, a dielectric substrate having two or more conductor layers is provided with two rows of conducting holes connecting the conductor layers, and the spacing between the conducting holes in each row is defined. Is set to be smaller than the cutoff wavelength, and the distance between the rows of the two conduction holes is set to a predetermined waveguide width. This aims to achieve the above-mentioned object.

[0006]

The electromagnetic wave of a predetermined frequency is guided in the conductive holes formed in two rows in the dielectric substrate and is surely propagated in the predetermined direction.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. In FIG. 1, reference numeral 1 indicates a dielectric substrate. Conductor layers 2 and 3 are planarly mounted on both surfaces of both surfaces of the dielectric substrate 1. The dielectric substrate 1 including the conductor layers 2 and 3 is provided with a plurality of conduction holes 4, 4, ... Through the conductor layers 2 and 3 and the dielectric substrate 1 in two rows. Conduction hole 4 in each row
Are processed and formed so that the conductor layers 2 and 3 described above are electrically connected to each other. Interval a between the conduction holes 4 in each row
Is set to an interval smaller than the wavelength (cutoff wavelength) of the electromagnetic wave. Further, the spacing B between the rows of the plurality of conduction holes 4 is specified by the frequency of the electromagnetic wave.

As described above, the upper and lower conductor layers 2 and 3 are conductively connected by the row of the conductive holes 4 arranged at intervals smaller than the cutoff wavelength, whereby the wall surface of the rectangular waveguide portion 7 is approximately formed. A waveguide line is configured. The symbol A indicates a part of the length of the waveguide line. As a result, the electromagnetic wave of a predetermined frequency is guided in the conductive holes 4, 4, ... Formed in two rows in the dielectric substrate 1 and is reliably propagated in a predetermined direction.

Here, as for the conduction hole 4, a through hole may be formed first, and then each through hole may be filled with a conductive member.

As described above, according to the present embodiment, the waveguide line can be freely formed at any position in the dielectric substrate 1, so that the process is facilitated, and the dielectric substrate 1 is formed with a predetermined hole. Since it is possible to set the waveguide line by doing so, it is not necessary to mount another member on the substrate at all, and in this respect, the configuration is very simple, and the entire device can be downsized. An excellent waveguide line can be obtained.

[0011]

Since the present invention is constructed and functions as described above, according to this, the waveguide can be freely set to any position in the dielectric substrate, which facilitates processing.
Since it is possible to set the waveguide line only by processing a plurality of predetermined holes in the dielectric substrate, there is no need to mount another member on the substrate at all, and in this respect, the configuration is very simple, It is possible to provide an unprecedented excellent waveguide line in which the entire device can be downsized as compared with the conventional one.

[Brief description of drawings]

FIG. 1 is a perspective view showing a part of an embodiment of the present invention.

[Explanation of symbols]

 1 Dielectric Substrate 2, 3 Conductor Layer 4 Conduction Hole

Claims (2)

[Claims] 1. A dielectric substrate having two or more conductor layers is provided with two rows of conductive holes connecting the conductor layers, and the distance between the conductive holes in each row is smaller than the cutoff wavelength. At the same time, the waveguide line is characterized in that the interval between the rows of the two rows of conduction holes is set to a predetermined waveguide width. 2. A dielectric substrate having two or more conductor layers is provided with two rows of through holes connecting the conductor layers, and the through holes in each row have an interval smaller than a cutoff wavelength. At the same time, the interval between the two rows of through holes is set to a predetermined waveguide width, and each of the through holes is filled with a conductive member.