JP2699880B2 - High power terminator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-power terminator (dummy load), and more particularly to a high-power terminator commonly used as a terminal for two high-power high-frequency signals that differ only at the time of switching due to the configuration of a communication system. .

[0002]

2. Description of the Related Art A conventional high power terminator has a wave absorber provided on the end face of a waveguide having one opening face.
A heat radiator is attached according to the amount of heat generated at the end. FIG. 3 is a cross-sectional view of a conventional high power terminator. Reference numeral 21 denotes a waveguide having an opening surface 22, reference numeral 23 denotes a radio wave absorber provided on the termination surface of the waveguide 21, and reference numeral 24 denotes a radiator. The high-power high-frequency signal input from the aperture surface 22 is absorbed by the radio wave absorber 23 and terminated substantially without reflection. Heat generated at the end portions Ru is naturally radiated through the heat radiator 24.

Next, an example in which the above-mentioned conventional high power terminator is used in a communication system will be described. FIG. 4 is a configuration diagram of a transmission unit using a conventional high power terminator in a communication system, where 9 (A) and 9 (B) show a high-frequency input signal 1.
01 is an amplifier for power amplifying 01, and 10 is a high frequency input signal 10
1 is a coaxial switch for switching and inputting to the amplifier 9 (A) or 9 (B), and 11 is a waveguide switch for switching and outputting either the output of the amplifier 9 (A) or the output of the amplifier 9 (B). A waveguide switch 12 switches the output signal from the waveguide switch 11 to a transmitting end or a terminator. 2
Each of 5 (A) and 25 (B) is a conventional high power terminator.

[0004] In FIG. 4, a high-frequency input signal 101 is switched and connected by a coaxial switch 10 and input to an amplifier 9 (A). In this case, the input of the amplifier 9 (B) is the coaxial switch 1
It is switched at 0 and terminated.

The output signal of the amplifier 9 (A) is input to the waveguide switch 12 by the switching connection of the waveguide switch 11, and the output signal of the amplifier 9 (B) is switched by the switching connection of the waveguide switch 11. To terminate at the large power terminator 25 (A). Amplifier 9
The output signal of (A) is connected to the transmitting end by the switching connection of the waveguide switch 12, and the high-frequency output signal 102 is output.

The switching state of the coaxial switch 10 and the waveguide switch 11 shown in FIG. 4 is a case where the amplifier 9 (A) is used as a working system and the amplifier 9 (B) is used as a standby system.
When the amplifier 9 (B) is switched to the active system and the amplifier 9 (A) is switched to the standby system, first, the high-power high-frequency signal input by the switching operation of the waveguide switch 12 is approximately terminated by the terminator 25 (B). Non-reflective termination. Next, by the switching operation of the coaxial switch 10 and the waveguide switch 11, the high-frequency input signal 101 is power-amplified by the amplifier 9 (B) and input to the waveguide switch 12.
At this time, the input and output of the amplifier 9 (A) are both terminated. Thereafter, the output signal of the amplifier 9 (B) is connected to the output terminal by the switching operation of the waveguide switch 12, and the high-frequency output signal 102 is output.

[0007]

However, due to the configuration of the communication system, power is consumed by the terminator only at the time of switching, and even if a plurality of terminators used do not simultaneously consume power, the conventional large power The required number of terminators must be installed.

Therefore, there is a problem that the number of components of the apparatus increases, which complicates and enlarges the apparatus, and that it is not economical.

[0009] An object of the present invention is to solve the above-mentioned problems by coupling two waveguide paths terminated by a radio wave absorber with a directional coupling hole, and inputting the light into the aperture surface of each waveguide path. A two-input aperture terminator capable of dividing a divided high-power high-frequency signal and terminating substantially non-reflection with two radio wave absorbers
To provide a large power terminator.

[0010]

[Means for Solving the Problems]Achieve the above objectives
The high power terminator of the present invention includes
It is characterized by having a structured structure. (A) a first waveguide path having a first input aperture surface;
A second waveguide path having a second input aperture surface;
A first radio wave absorber mounted on the end face of the waveguide path of
A second electromagnetic wave absorber mounted on the terminal surface of the second waveguide path;
A collector, and the first waveguide path and the second waveguide path
A common E-plane which is integrally connected to the end face;
A directional coupling hole provided in the E-plane.
Force aperture terminator (B) A first input terminal to which a high-frequency signal is input and a second input terminal
And a first output terminal from which the high-frequency signal is output
Connected to a first opening surface of the first waveguide path.
A second output terminal, and a first input terminal connected to the first output terminal.
To connect the second input terminal to the second output terminal
And the first input terminal is connected to the second output terminal, and the second input terminal is connected to the second output terminal.
Switch the connection state to connect to the output terminal
First waveguide switching means (C) a third input connected to the first output terminal
An end, a fourth input end that is terminated, and the high-frequency signal
And a third output terminal from which the second waveguide path is output.
And a fourth output end connected to the second opening surface.
3 input terminal to the third output terminal, and the fourth input terminal to the fourth output terminal.
Connection state to connect to the input end, and the third input end to the fourth output
Connection state, connecting the fourth input terminal to the third output terminal
Waveguide switching means capable of switching between

[0011]

[0012]

[0013]

[0014]

Next , the above-mentioned 2 which constitutes the high power terminator of the present invention will be described.
The operation of the input aperture terminator will be described. A part of the high-power high-frequency signal input to the first aperture surface is absorbed by the first radio wave absorber mounted on the terminal surface of the first waveguide, and is terminated substantially without reflection. You. At the same time, the remaining power is absorbed by the second radio wave absorber mounted on the termination surface of the second waveguide via the directional coupling hole provided in the common E-plane, and is terminated substantially without reflection. .

The same applies to the high-power high-frequency signal input to the second aperture surface. A part of the power is supplied to the second radio wave absorber, and the remaining power is supplied to the first radio wave via the directional coupling hole. Absorbed by the absorber.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a two-input terminal constituting a high power terminator according to the present invention.
FIG. 1 is a cross-sectional view of an aperture terminator , wherein 1 is a waveguide having an opening surface 3, 2 is a waveguide having an opening surface 4, 5 is a radio wave absorber mounted on the termination surface of the waveguide 1, 6 Is a radio wave absorber mounted on the end face of the waveguide 2, and 7 is a waveguide 1 and a waveguide 2
And 8 is a directional coupling hole provided in the common E-plane.

A part of the high-power high-frequency signal input from the aperture surface 3 is absorbed by the radio wave absorber 5 and terminated almost without reflection. A part of the high-power high-frequency signal is input to the waveguide 2 via the directional coupling hole 8 provided in the common E-plane 7, and is absorbed by the radio wave absorber 6 to be substantially non-reflective.

Similarly, with respect to the high-power high-frequency signal input from the aperture surface 4, part of the power is absorbed by the radio wave absorber 6 and terminated substantially without reflection, and the remaining power is transmitted through the directional coupling hole 8. Then, it is absorbed by the radio wave absorber 5 and terminated substantially without reflection.

When the coupling degree of the directional coupling hole 8 is 3 dB, the power of the input high-power high-frequency signal is equally divided and half / half is absorbed by the radio wave absorbers 5 and 6, respectively. . In this case, the radio wave absorbers 5 and 6 may have the same radio wave absorption capacity, and are half the radio wave absorption capacity of the radio wave absorber 23 of the conventional high power terminator shown in FIG. You can use those of the ability.

The opening surface 3 through the directional coupling hole 8
The leakage of the high-frequency signal from the aperture surface 4 to the aperture surface 4 (or from the aperture surface 4 to the aperture surface 3) does not pose a problem in operation because a directional attenuation of 30 dB or more is normally obtained.

Next, a high power termination of the present invention, examples of using a communication system will be described. FIG. 2 is a configuration diagram of a transmission unit using the high power terminator of the present invention in a communication system, and corresponds to the configuration diagram of the conventional transmission unit of FIG. In FIG. 2, reference numeral 13 denotes a two-input aperture terminator, and other components are the same as those of FIG. The aperture face 3 of the two-input aperture terminator 13 is connected to the waveguide switch 11, and the aperture face 4 is connected to the waveguide switch 12.

The high-frequency input signal 101 is power-amplified by the amplifier 9 (A), and the high-frequency output signal 102 is output from the output terminal via the waveguide switches 11 and 12. Amplifier 9
In (B), the input and output are terminated. Amplifier 9
(A) is the operation system and the amplifier 9 (B) is the standby system.
When the amplifier 9 (B) is switched to the active system and the amplifier 9 (A) is switched to the standby system, the high-power high-frequency signal output from the amplifier 9 (A) or 9 (B) is terminated by the two-input aperture terminator 13. Power consumption. However, the two-input aperture terminator 13
The high-power high-frequency signal is not simultaneously input to the aperture surfaces 3 and 4 of the first and second input aperture terminators 13, and the two-input aperture terminator 13 is used as a common terminator for the two high-power high-frequency signals.

Further, the waveguide switch 11 and the 12 and 2 ON
In high power termination 14 of the present invention in which the force opening terminator 13 and integral structure, 12 and 2 enter the waveguide switch 11
The waveguide connection with the force aperture terminator 13 becomes unnecessary, and the system configuration is further simplified.

[0024]

As described above, in the high power terminator according to the present invention, one high power high-frequency signal which is not terminated at the same time due to the configuration of the communication system is used for one high power signal.
A two-input aperture terminator that divides each high-power high-frequency signal with two terminators, absorbs them into two radio wave absorbers, and terminates almost non-reflectively
The integration of the two waveguide switches has the effect of reducing the number of components of the device and simplifying it. In addition, in the case of the same withstand power as in the related art, the size is reduced, and in the case of the same volume, there is an effect that the withstand power capacity is improved, and there is an effect that it is economical.

[Brief description of the drawings]

FIG. 1 shows a two-input open terminal constituting a high power terminator of the present invention.
It is sectional drawing of a terminal device .

FIG. 2 is a configuration diagram of a transmission unit using the high power terminator of the present invention.

FIG. 3 is a cross-sectional view of a conventional high power terminator.

FIG. 4 is a configuration diagram of a transmission unit using a conventional high power terminator.

[Explanation of symbols]

1, 2 waveguide 3, 4 opening surface 5, 6 radio wave absorber 7 common E-plane 8 directional coupling hole 9 (A) amplifier 9 (B) amplifier 10 coaxial switch 11, 12 waveguide switch 13 2 Input aperture terminator 14 Integrated structure type high power terminator 21 Waveguide 22 Opening surface 23 Radio wave absorber 24 Radiator 101 High frequency input signal 102 High frequency output signal

Claims (1)

(57) [Claims] (1)Integrated structure including the following configuration
A high power terminator characterized by: (A) a first waveguide path having a first input aperture surface;
A second waveguide path having a second input aperture surface;
A first radio wave absorber mounted on the end face of the waveguide path of
A second electromagnetic wave absorber mounted on the terminal surface of the second waveguide path;
A collector, and the first waveguide path and the second waveguide path
A common E-plane which is integrally connected to the end face;
A directional coupling hole provided in the E-plane.
Force aperture terminator (B) A first input terminal to which a high-frequency signal is input and a second input terminal
And a first output terminal from which the high-frequency signal is output
Connected to a first opening surface of the first waveguide path.
A second output terminal, and a first input terminal connected to the first output terminal.
To connect the second input terminal to the second output terminal
And the first input terminal is connected to the second output terminal, and the second input terminal is connected to the second output terminal.
Switch the connection state to connect to the output terminal
First waveguide switching means (C) a third input connected to the first output terminal
An end, a fourth input end that is terminated, and the high-frequency signal
And a third output terminal from which the second waveguide path is output.
And a fourth output end connected to the second opening surface.
3 input terminal to the third output terminal, and the fourth input terminal to the fourth output terminal.
Connection state to connect to the input end, and the third input end to the fourth output
Connection state, connecting the fourth input terminal to the third output terminal
Waveguide switching means capable of switching between