JPH0529833A - Plane antenna device - Google Patents

Abstract

PURPOSE:To obtain a plane antenna capable of directly receiving the transmission radio wave of a broadcasting satellite and the transmission radio wave of a communication satellite without changing the directions by defining surfaces which are constituted in a V-character with the plane antenna and are opposed as receiving surfaces, respectively. CONSTITUTION:A plane antenna 1a for receiving a broadcasting satellite as a plane antenna and a plane antenna 1b for a communication satellite are constituted in a V-character. A RF-IF converter for receiving 2 and a center connection part 2 of the plane antennas 1, 2 are provided on the back side, and a pillar 3 and a supporting base 4 are also provided. The inside surfaces facing with each other by the plane antennas 1a, 1b constituted in a V-character are defined as receiving surfaces. Namely, the radio wave of a broadcasting satellite is received on the side facing the 110th degree of east longitude of static orbit and the radio wave of a communication satellite is received on the side facing a direction of east longitude of the orbit from the 150th degree to the 162nd degree, of the V-character antenna. Thus, the radio wave of the broadcasting satellite and communication satellite can be received by having them fixed without changing the angle of the plane antenna.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat antenna device for receiving radio waves from broadcasting satellites and communication satellites.

[0002]

2. Description of the Related Art FIG. 4 is an external view showing a conventional planar antenna device. In the figure, 1 is a planar antenna, 2 is a receiving RF-IF converter provided on the back surface of the planar antenna 1, 3 is a supporting column, 4 is a support base.

Next, the operation will be described. Both the broadcasting satellite and the communication satellite are located in the geostationary orbit of 36,000 km above the equator and transmit radio waves to the ground. The frequencies of domestic broadcasting satellites are in the band from 11.7 GHz to 12.0 GHz, and the frequencies of private communication satellites are from 12.25 GHz to 1
2.75 GHz. The incoming radio wave is received by the plane antenna 1 shown in FIG. There are two types of planar antenna 1 that use a patch array and one that uses a radial slot array, and the rectangular antenna shown in FIG. 3 often uses a patch array.

The received radio wave is input to the receiving RF-IF converter 2 located at the center of the back surface of the planar antenna 1,
It is converted to the required IF frequency, input to an indoor BS tuner or CS tuner, and various programs are broadcast by a television receiver. The receiving RF-IF converter 2 has one
A receiver having a reception band of 1.7 GHz to 12.75 GHz is used.

The broadcasting satellite is located at 110 ° east longitude on the geostationary orbit, and the communication satellite is located between 150 ° and 162 ° east longitude. Therefore, the reception angle of the plane antenna 1 is changed in the direction of each satellite to receive.

[0006]

Since the conventional planar antenna device is constructed as described above, it is necessary to direct the planar antenna 1 in the direction of 110 ° east longitude in the geostationary orbit in the case of broadcasting satellite reception. Yes, and in the case of communication satellite reception, it is necessary to redirect in the direction from 150 ° to 162 ° east longitude in the geosynchronous orbit. Therefore, there is a problem in that it is necessary to change the angle of the planar antenna 1 each time.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a planar antenna device capable of receiving radio waves of a broadcasting satellite and a communication satellite without changing the angle of the planar antenna. There is.

[0008]

According to a first aspect of the present invention, there is provided a planar antenna device having a V-shaped planar antenna, wherein the inner surface of one side of the V-shape receives radio waves of a broadcasting satellite and the other side of the V-shaped antenna receives the radio waves of the broadcasting satellite. It is designed to receive the radio waves of communication satellites inside.

In the plane antenna device according to the invention of claim 2, the plane antenna is formed in an arc shape so that half of the inner surface thereof can receive the radio waves of the broadcasting satellite and the communication satellite.

According to another aspect of the present invention, there is provided a flat antenna device, wherein the flat antenna is formed in a substantially λ shape, and a surface opposite to the facing surface is a receiving surface, and one receiving surface is a broadcasting satellite. Is received, and the other receiving surface receives the radio waves of the communication satellite.

[0011]

The flat antenna device according to the invention of claim 1 is
The V-shaped antenna receives the radio waves from the broadcasting satellite on the side facing the geostationary orbit 110 ° east longitude, and receives the radio wave from the satellite 150 ° east longitude 16 ° to 16 °
Since the radio wave of the communication satellite is received on the side facing the direction of 2 °, the radio wave of each satellite can be received with the planar antenna fixed.

According to the second aspect of the present invention, the flat antenna device receives the radio wave of the broadcasting satellite on the side of the λ-shaped antenna facing the 110 ° east longitude of the geostationary orbit and heads in the direction of 150 ° to 162 ° east longitude. Since the side receives the radio wave of the communication satellite, the radio wave of each satellite can be received with the planar antenna fixed.

According to the third aspect of the present invention, the plane antenna device receives the radio waves of the broadcasting satellite on approximately half of the arcuate antenna which faces the geostationary orbit 110 ° east longitude, and receives the radio wave from the orbit east longitude 1
Since the radio waves of the communication satellites are received by the other half surface which is oriented in the direction of 50 ° to 162 °, the radio waves of each satellite can be received with the planar antenna fixed.

[0014]

EXAMPLES Example 1. An embodiment of the invention of claim 1 will be described below with reference to the drawings. In FIG. 1, 1a is a plane antenna for receiving a broadcasting satellite as a first plane antenna, and 1a.
Reference numeral b denotes a plane antenna for receiving a communication satellite as a second plane antenna, which is formed in a V shape together with the plane antenna 1a. Reference numeral 2 denotes a receiving RF-IF converter, which is provided on the back surface of the central connecting portion 1c of the planar antennas 1a and 1b. 3 is a support pillar, and 4 is a support base. The planar antennas 1a and 1b configured in a V shape have the facing inner surfaces as radio wave receiving surfaces.

Next, the operation will be described. The planar antenna 1a faces in the direction of 110 ° east longitude on the geostationary orbit
It receives radio waves from broadcasting satellites in the 1.7 GHz to 12.0 GHz band. The planar antenna 1b is in the geostationary orbit 15 east longitude
It faces each other at about 155 ° so as to face the direction of 0 ° to 162 °, and receives radio waves from a communication satellite of 12.25 GHz to 12.75 GHz. The received radio wave is R for reception
The program is input to the F-IF converter 2, converted into a required IF frequency, input to an indoor BS tuner or CS tuner, and various programs are broadcast by a television receiver.

Example 2. FIG. 2 shows an embodiment of the invention of claim 2, in which the planar antenna 1d is curved in an arc shape, and the receiving RF-IF converter 2 is provided at the center of the rear surface thereof.
Is provided.

According to the above configuration, the inner surface of the left half of the arc-shaped planar antenna 1d in the figure can be used for receiving the broadcasting satellite, and the inner surface of the right half can be used for receiving the communication satellite.

Example 3. FIG. 3 shows an embodiment of the invention of claim 3 in which a plane antenna 1a for receiving a broadcasting satellite and a plane antenna 1b for receiving a communication satellite are formed in a substantially λ shape. The plane antennas 1a and 1b have a receiving surface on the side opposite to the surfaces facing each other. Further, the plane antenna 1a is oriented in the direction of 110 ° east longitude on the geostationary orbit, and the plane antenna 1b is oriented in the direction of about 150 ° to 162 ° east longitude. For this reason, both are obliquely connected to each other as shown. With the above structure, the same effects as those of the first and second embodiments are obtained.

[0019]

As described above, according to the first aspect of the present invention, since the plane antenna and the V-shaped surface are opposed to each other and the opposite surfaces are used as the receiving surfaces, the broadcasting satellite can be changed without changing the angle of the plane antenna. And there is an effect that can receive the radio waves of communication satellites.

According to the second aspect of the present invention, since the plane antenna is bent and the signal is received by half of the inner surface thereof, the radio waves of the broadcasting satellite and the communication satellite are received without changing the angle of the plane antenna. There is an effect that can be done.

According to the third aspect of the present invention, the plane antenna is formed in a substantially λ shape, and the surface opposite to the facing surface is used as the receiving surface, so that the broadcasting is performed without changing the angle of the flat antenna. It is effective in receiving the radio waves of satellites and communication satellites.

[Brief description of drawings]

FIG. 1 is an external view showing a planar antenna device according to an embodiment of the present invention.

FIG. 2 is an external view showing a planar antenna device according to an embodiment of the present invention.

FIG. 3 is an external view showing a planar antenna device according to an embodiment of the present invention.

FIG. 4 is an external view showing a conventional planar antenna device.

[Explanation of symbols]

1a Flat antenna for broadcasting satellite reception (first flat antenna) 1b Flat antenna for communication satellite reception (second flat antenna) 1d Arc-shaped flat antenna (flat antenna)

Claims (3)

[Claims] 1. A first plane antenna provided with one surface as a reception surface at an angle capable of receiving radio waves from a broadcasting satellite, and a surface opposite to the reception surface of the first plane antenna as a reception surface. A planar antenna device comprising: a second planar antenna provided so as to form a V shape together with the first planar antenna at an angle capable of receiving radio waves from a communication satellite. 2. A plane antenna is provided which is curved in an arc shape and has approximately half of its inner surface as a receiving surface for radio waves from a broadcasting satellite and another approximately half surface as a receiving surface for radio waves from a communication satellite. Planar antenna device. 3. A first planar antenna provided with one surface as a receiving surface at an angle capable of receiving radio waves from a broadcasting satellite, and a surface opposite to the receiving surface of the first planar antenna facing each other. So that with this first planar antenna approximately λ
A second planar antenna which is provided at an angle capable of receiving radio waves from a communication satellite so as to form a V-shape, and which has a receiving surface on a surface opposite to the surface facing the first planar antenna. Flat antenna device.