JPS5834762Y2 - high frequency equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high frequency device, and particularly to a high frequency device equipped with means for preventing semiconductor elements built therein from being destroyed or deteriorated by static electricity, surge voltage, or the like.

In devices such as frequency converters and wave detectors, semiconductor elements such as frequency conversion diodes and detection diodes used therein are placed in the electrical signal output circuit, but the output impedance of that circuit generally has a large output voltage. It is highly designed to obtain.

Therefore, a strong electric field is likely to be induced in these semiconductor elements.

In particular, if the output section of the device described above is exposed to a strong electric field while it is open or grounded through a high resistance, a strong electric field will be induced in the semiconductor elements of the output circuit, causing damage to those semiconductor elements. This may lead to destruction and deterioration.

Therefore, protection measures using short circuits have been conventionally used, such as soldering or mechanically wrapping a metal wire around the output part of the device to short-circuit the semiconductor element.

By the way, in the conventional method, it is not easy to attach and detach the short circuit that is required every time the characteristics of the device are checked, and it cannot be said to be economical. Therefore, the short circuit is attached when all the checking work is completed. is common.

Therefore, if a semiconductor element is exposed to a strong electric field during work, it may be destroyed or deteriorated, and when soldering a short circuit, it may be destroyed or deteriorated by leakage current from the soldering iron. .

An object of the present invention is to provide a high frequency device having a function of protecting a semiconductor element built into the main body of the device from electrostatic discharge damage or surge voltage damage.

The high frequency device of the present invention has a semiconductor element built into the waveguide mount, one end of which is electrically connected to the waveguide wall, and the other end is insulated from the waveguide wall and led out from there. A ground terminal is provided on the outer surface of the waveguide, and the ground terminal and the output terminal can be short-circuited by a detachable spring-like conductor.

The present invention will be explained in more detail with reference to FIG.

FIG. 1 is a sectional view showing an example of the present invention applied to a high frequency band detector.

This detector has a detection diode 2 inserted at an appropriate position within the waveguide mount 1, so one end of the detection diode 2 is electrically connected to the waveguide mount 1 through a metal cap 3. , and the other end is connected to an output terminal 5 which is insulated from the waveguide mount 1 by an insulator 4 .

Between the output terminal 5 and the ground terminal 6 provided on the waveguide mount 1, there is a resistor 7 which is generally called a load resistance of the detector.
is connected.

If the resistance value is small enough, the resistor 7 should be able to play the role of a short circuit that protects the detection diode 2 from high electric fields, but it is necessary to obtain a sufficient detection output and to connect it next to the detector. In consideration of the human power impedance of the amplifier, the resistor 7 generally has a value of several tens of ohms or more, which is insufficient as a short circuit.

Therefore, a short circuit 8 made of a good conductor is provided in parallel with the resistor 7, and is removed during use.

An example of the short circuit 8 used in the semiconductor device according to the present invention is shown in FIG. 2a-1).

Stretchability is achieved by making a highly elastic metal wire into a coiled spring, and by bending a highly elastic metal plate into a flat spring, as shown in Figure 2a. It has had enough.

With such a highly elastic short circuit, it is extremely easy to attach and detach it to the device, and it is sufficient to simply hook it mechanically and place it without soldering to the output terminal and ground terminal. A good electrical contact can be obtained.

From the above description, the usefulness of the semiconductor device according to the present invention is clear.

Furthermore, it is clear that the present invention can be widely applied to high frequency devices that require short circuits, in addition to the detectors cited as examples.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the semiconductor device according to the present invention, and FIG. 2 is an overview diagram showing an example of a short circuit used in the semiconductor device according to the present invention. 1... Waveguide mount, 2... Semiconductor element, 3... Cap, 4... Insulator, 5... Output terminal , 6... Ground terminal,
7...Resistor, 8...Short circuit.

Claims (1)

[Scope of utility model registration request] A semiconductor element is built in the waveguide mount, one end of the semiconductor element is electrically connected to the waveguide wall, and the other end is insulated from the waveguide wall and is thereby connected to an output terminal led out to the outside. A high frequency device characterized in that the output terminal and the end terminal are connected to each other, and a ground terminal is provided on the outer surface of the waveguide, and the output terminal and the end terminal are configured so that a short circuit can be made between them by a detachable spring-like conductor. .