JPH0336801A - Circularly polarized wave generator - Google Patents

Abstract

PURPOSE:To simplify the constitution by outputting a circularly polarized wave inputted from a 1st output terminal of a changeover means as one circularly polarized wave, reflecting the circularly polarized wave inputted from a 2nd output terminal into a reflecting face and outputting the reflected wave as the other circularly polarized wave. CONSTITUTION:When a right haud polarized wave I1 from a circularly polarized wave generating source is fed to a changeover switch 10, the right haud polarized wave I1 is led to either of 1st and 2nd input sections X, Y of a dielectric substance 11 in response to the operating position of the changeover switch 10, the right haud polarized wave I1 led to the input section X is outputted from a 1st output face 11b as the right haud polarized wave I1, the right haud polarized wave I1 inputted to the input section Y is reflected in a reflection face 11d, in which the right haud polarized wave I1 is converted into a left hand polarized wave I2 and outputted from a 2nd output face 11c. Thus, the right and left haud polarized waves I1, I2 are obtained without provision of a rotary drive mechanism to control the drive of the dielectric substance and the constitution is simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a circularly polarized wave generator provided in, for example, a transmitter of microwaves, millimeter waves, light waves, etc.

(Prior Art) Generally, this type of circularly polarized wave generator is disposed in a transmitting section, for example between an antenna and a feeder, and selectively generates right-handed and left-handed circularly polarized waves from input linearly polarized waves. Output.

Figure 3 shows such a conventional circularly polarized wave generator.
A plate-shaped dielectric 2 is rotatably accommodated in the cylinder 1 . The rotation angle of this dielectric body 2 is controlled by a rotational drive mechanism (not shown), and depending on the rotational position, the dielectric body 2 rotates the linearly polarized wave input in the direction of the arrow approximately perpendicular to the axial direction of the cylinder 1 to the right or to the left. Convert to circularly polarized wave.

However, the above-mentioned circularly polarized wave generator is configured to generate right-handed or left-handed circularly polarized waves by switching and setting the rotation angle of the dielectric, and is equipped with a rotational drive mechanism as a component to control the rotation of the dielectric. Therefore, there was a problem in that the configuration was extremely complicated.

(Problems to be Solved by the Invention) As described above, in the conventional circularly polarized wave generator, the configuration is extremely complicated due to the need to provide a rotational drive mechanism to control the rotation of the dielectric. I had a problem with that.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a circularly polarized wave generator that has a simple configuration and is capable of generating right-handed and left-handed circularly polarized waves.

[Structure of the Invention] (Means for Solving the Problems) In this invention, either right-handed or left-handed circularly polarized waves are input, and the input circularly polarized waves are selectively output to first and second output ends. an input surface parallel to the input surface and having first and second input sections into which one of the circularly polarized waves outputted from the first and second output ends of the switching means is input; a first output surface from which one circularly polarized wave incident on the first input section is output; a second output surface corresponding to the second input section having a different inclination angle from the input surface and the first output surface; and a dielectric body having a reflecting surface that totally reflects the circularly polarized wave input to the second input section, converts it into the other circularly polarized wave, and guides it to the second output surface. This is a circularly polarized wave generator.

(Function) According to the above configuration, when either the right-handed or left-handed circularly polarized wave is input to the switching means, the input circularly polarized wave is changed to the input circularly polarized wave according to the switching operation of the switching means. The waves are directed to a dielectric first or second input. The first of these
The circularly polarized wave input to the input section is outputted as one circularly polarized wave from the first output surface, and the one circularly polarized wave inputted to the second input section is reflected by the reflecting surface and outputted from the second output surface. It is converted into the other circularly polarized wave and output.

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

FIG. 1 shows a circularly polarized wave generator according to an embodiment of the present invention, in which the input terminal of a changeover switch 10 receives right-handed or left-handed circularly polarized waves I, , I2 from a circularly polarized wave generation source (not shown). For example, a right-handed circularly polarized wave 11 is input. This changeover switch 10 is controlled via a control section (not shown), and outputs the input right-handed circularly polarized wave 11 to a first or second output end. The first and second output ends of this changeover switch 10 are connected to the first and second input portions X, Y of the input surface 11g of the dielectric 11.
connected to. As shown in FIG. 2, the dielectric 11 has a first output surface 11b parallel to the input surface 11a and an input surface 11a.
A second output surface 11C forming a part of an isosceles triangle (indicated by a two-dot chain line in the figure) is provided, and the input surface 11
A reflecting surface 11d is formed between the output surface 11a and the first output surface 11b, which totally reflects the right-handed circularly polarized wave 1 input to the second input section Y.

In the above configuration, when the right-handed circularly polarized wave 11 is supplied from the circularly polarized wave generation source (not shown) to the changeover switch 10, the changeover switch 10 is selectively operated by the control unit (not shown). Right-handed circularly polarized wave 11 controlled by switching and guided to its input end
to the first or second output terminal via the first or second output terminal.
leads to the input parts X and Y of. Among these, the first input section X directly guides the input right-handed circularly polarized wave I to the first output surface 11b and outputs it. On the other hand, the second input section Y guides the inputted right-handed circularly polarized wave 11 to the reflecting surface 11d, totally reflects it, converts it into a left-handed circularly polarized wave I2, and outputs it from the second output surface 11C.

In this manner, the circularly polarized wave generator generates right-handed circularly polarized waves, 1... the first of the dielectric 11
and the right-handed circularly polarized wave 11 inputted to the first input section X is output as the right-handed circularly polarized wave 11 from the first output surface 11b. , the right-handed circularly polarized wave 11 input to the second input section Y is reflected by the reflecting surface 11d, converted into a left-handed circularly polarized wave I2, and outputted from the second output surface 11c. and left-handed circularly polarized wave I,
, I2 are generated. According to this,
Right-handed and left-handed circularly polarized waves 1. , I2 can be obtained, so the configuration can be simplified as much as possible.

In the above embodiment, the right-handed circularly polarized wave I is supplied to the changeover switch 10 to generate right-handed and left-handed circularly polarized waves 11 degrees I2, but the present invention is not limited to this, and the left-handed circularly polarized wave I2 is supplied to the changeover switch 10 to generate right-handed and left-handed circularly polarized waves 1.
．． , I2 may be generated.

Further, in the above embodiment, the second output surface 11C is the input surface 1
1a to form a part of an isosceles triangle, so that the left-handed circularly polarized wave I2 becomes the right-handed circularly polarized wave 1. Although it is configured to take out parallel to I2, it is not limited to this.
For example, the second output surface 11C is formed to have a different inclination angle from both the input surface 11a and the first output surface 11b, so that the left-handed circularly polarized wave I2 and the right-handed circularly polarized wave 11 are generated in a non-parallel state. It is also possible to configure it so that it can be taken out.

Therefore, the present invention is not limited to the above embodiments, but also includes
It goes without saying that various modifications can be made without departing from the spirit of the invention.

[Effects of the Invention] As detailed above, according to the present invention, it is possible to provide a circularly polarized wave generator that has a simple configuration and is capable of generating right-handed and left-handed circularly polarized waves. can.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a circularly polarized wave generator according to an embodiment of the present invention, FIG. 2 is a perspective view showing the dielectric shown in FIG. 1, and FIG. 3 is a conventional circularly polarized wave generator. FIG. 10... Selector switch, 11... Dielectric, lla.
...Input surface, llb, 11. c...first and second output surfaces, 11d...reflection surface.

Claims (1)

[Scope of Claims] A switching means that receives either right-handed or left-handed circularly polarized waves and selectively outputs the inputted circularly polarized waves to first and second output ends; and an input surface having first and second input parts into which one circularly polarized wave outputted from the second output end is input, and one circle parallel to this input surface and incident on the first input part. a first output surface from which a polarized wave is output; a second output surface corresponding to the second input section having a different tilt angle from the input surface and the first output surface; and a second output surface corresponding to the second input section. A circularly polarized wave generator comprising: a dielectric body having a reflecting surface that totally reflects an input circularly polarized wave, converts it into the other circularly polarized wave, and guides it to the second output surface.