JPS6022645Y2 - Triple plate type terminator - Google Patents

Description

[Detailed Description of the Invention] This invention relates to improving the power withstanding characteristics and downsizing of a triplate type terminator.

Figure 1 shows the components of a conventional triplate type terminator. In the figure, 1, 1 is a pair of ground conductors, 2, 2 is a pair of dielectric substrates, 3 is a center conductor, and 4 is a resistor. It is a film.

Next, the operation of the conventional triplate type terminator will be explained.

The high frequency power that enters the tri-plate strip line formed by the sandwich structure of the ground conductor 1, dielectric substrate 2, and center conductor 3 is transmitted to the tapered resistive film sandwiched in the same line as the center conductor 3. By entering 4,
The high-frequency electric field having components parallel to the wide surface of the resistive film 4 is gradually absorbed, and impedance matching is also gradually performed.

Therefore, a triplate type terminator with excellent impedance characteristics can be realized.

However, the disadvantage of this triplate type terminator is that it basically has less resistance film as a triplate strip line.
Since the terminator is configured by absorbing high-frequency electric field components parallel to the wide surface of the terminal, the absorption efficiency is poor and the shape is large.

In addition, the heat generated by the high-frequency power absorbed by the resistive film 4 was radiated through the center conductor 3, which had a small heat radiation cross section, and the dielectric substrate 2, which had poor thermal conductivity, resulting in poor power durability.

This invention eliminates the above-mentioned conventional drawbacks, and its purpose is to improve power durability and reduce the size of the device.

Figure 2 shows the constituent countries of the embodiment of this invention, in which 1, 1 is a ground conductor, 2, 2 is a dielectric substrate, 3 is a center conductor, 4 is a resistive film, and 5 is a through-hole conductor. It is.

Here, the through-hole conductor 5 has the same potential as the ground conductors 1, 1, and is provided continuously in the dielectric substrates 2, 2 with a taper opposite to that of the resistive film.

Next, the operation of the triplate type terminator of this invention constructed as described above will be explained.

First, to explain the effect of the through-hole conductor 5 provided in the dielectric substrates 2, 2 along the center conductor 3, the ground conductor 1
The through-hole conductor 5 having the same potential can gradually increase the high-frequency electric field of the component parallel to the wide surface of the resistive film 4.

The high-frequency power that enters the strip line formed by the sandwich structure of ground conductors 1, 1, dielectric substrates 2, 2, and center conductor 3 is transmitted to the resistive film sandwiched between the center conductor 3 and on the same line. It enters the terminal and connects to the terminator.

At this time, the effect of the through-hole conductor 5 gradually increases the high-frequency electric field of the component parallel to the wide surface of the resistive film 4 necessary to realize the terminator, so that the high-frequency power absorption effect of the resistive film 4 is reduced. As a result, miniaturization can be achieved without deteriorating the frequency characteristics.

Furthermore, the heat generated by the high-frequency power absorbed by the resistive film 4 can be radiated through a large number of through-hole conductors 5 having good thermal conductivity, and the power resistance characteristics can also be improved.

As described above, in the triplate type terminator according to this invention, a tapered resistive film with an acute angle on the high-frequency power input side is installed along the center conductor in the dielectric substrate, and a tapered resistive film with a wide tapered shape on the high-frequency power input side is installed in the dielectric substrate. In addition, a through-hole conductor with the same potential as the continuous ground conductor is provided, and the resistive film and multiple through-hole conductors are formed to be in contact with each other at the same time, increasing the absorption effect of the resistive film and increasing the absorption effect of the resistive film. It is possible to efficiently dissipate the heat generated by the device, making it possible to reduce the size and improve the power resistance characteristics.

[Brief explanation of drawings]

FIG. 1 is an exploded configuration diagram showing a conventional triplate type terminator, and FIG. 2 is an exploded configuration diagram showing an embodiment of this invention. In the figure, 1 is a ground conductor, 2 is a dielectric substrate, 3 is a center conductor, and 4
5 is a resistive film, and 5 is a through-hole conductor. Note that the same or corresponding parts in the figures are denoted by the same reference numerals.

Claims (1)

[Scope of utility model registration request] In a triplate type terminator, which consists of two dielectric substrates with a ground conductor on one side, a tapered resistive film with a central conductor and a high-frequency power input side forming an acute angle is sandwiched in the same line.
A plurality of through-hole conductors are arranged in a dielectric substrate so that the high-frequency power entrance side forms a wide tapered shape and have the same potential as the ground conductor, and are formed so that the plurality of through-hole conductors and the resistive film are in contact with each other at the same time. This is a tri-plate type terminator that is characterized by: