JPH07106836A - Planar antenna system for reception - Google Patents

Abstract

PURPOSE:To simply install the planar antenna system onto a roof or under evaes of a building or the like by making the direction of the planar antenna systemcoincident with a direction of a transmission station. CONSTITUTION:Plural rectangular antenna elements 1 are provided on a same plane at a predetermined interval, and midpoints of a couple of sides opposite to each other in the antenn element 1 are used for a couple of feeding points 4a, 4b, respectively, and the feeding points 4a, 4b corresponding to each antenna element are connected to a couple of feeding sections 16a, 16b to be connected to the receiver via feeding conductors. The length of the feeding conductor from the feeding points 4a, 4b to the feeding sections 16a, 16b is made different by deflecting a beam directive angle of the antenna system by an angle delta1 from a vertical direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiving planar antenna device.

[0002]

2. Description of the Related Art Currently, Yagi-Uda antenna is widely used as a TV receiving antenna device, but in some heavy snow areas, the receiving antenna device is damaged and deteriorates in performance due to snowfall, resulting in reception failure. . Therefore, in order to realize an antenna device that is less likely to be damaged by snow, a planar antenna device that can be installed under the eaves has been proposed. This antenna device is used by amateur radio operators and the like as having the same performance as the widely used Yagi-Uda antenna.

As shown in FIG. 17, the above-described planar antenna device is provided with a plurality of rectangular antenna elements 51 arranged side by side on the same plane. Are a pair of feeding points 52a and 52b, respectively. Corresponding feeding points 52 of adjacent antenna elements 51
a and 52b are connected to each other by a pair of first feeding conductors 53a and 53b, respectively, whereby adjacent antenna elements 51 are connected.
A plurality of antenna units 54 are formed by combining them. The central portions of the corresponding first feeding conductors 53a and 53b of the adjacent antenna units 54 are connected by the pair of second feeding conductors 55a and 55b, respectively, and the central portions of the pair of second feeding conductors 55a and 55b. Are connected to the receiver side by a pair of third feeding conductors 56a and 56b, respectively.

[0004]

Therefore, in the conventional case,
The first feeding conductor 53 of the pair of second feeding conductors 55a and 55b
The connection position to a and 53b is the central portion of the first feeding conductors 6a and 6b, and the pair of third feeding conductors 56a and 56b.
Since the connection position of the second feeding conductors 55a and 55b is in the central portion of the second feeding conductors 55a and 55b, the beam directivity angle of the planar antenna device is simply the vertical direction of the antenna device as shown in FIG. I was facing the direction.

However, the orientation of a building such as a house is generally deviated from the orientation of the transmitting station, and since the planar antenna device is installed along the shape of the building, the planar antenna is installed. When the device is installed under the eaves or roof of a building such as a house, the beam directional angle of the antenna device is deviated from the direction of the transmitting station, and reception is often difficult. In addition, although the planar antenna device can use both surfaces as receiving surfaces of radio waves, since the beam directivity angle of the antenna device is oriented in the vertical direction, the planar antenna device can be installed upside down so that it is reversed left and right, Even if the antenna is installed upside down, the beam directivity angle of the antenna device hardly changes. Therefore, the beam directivity angle of the antenna device cannot be brought close to the transmitting station side, and the beam directivity of the planar antenna device with respect to the transmitting station is not possible. I was not able to cope with the deviation of the corners.

In view of the above-mentioned problems, the present invention makes it possible to easily install the planar antenna device on the eaves or roof of a building by matching the direction of the transmitting station.

[0007]

A first technical means of the present invention for solving the technical problem is to provide a plurality of rectangular antenna elements 1 on the same plane at a predetermined interval. The midpoints of a pair of opposite sides of each antenna element 1 are respectively defined as a pair of feeding points 4a and 4b, and the corresponding feeding points 4a and 4b of each antenna element 1 are connected to the receiver side. In the receiving planar antenna device connected to the power feeding portions 16a and 16b via the power feeding conductors, the feeding points 4a of the antenna elements 1 are arranged so that the beam directivity angle of the antenna device may deviate from the vertical direction by the angle δ1. The lengths of the power feeding conductors from 4b to the power feeding portions 16a and 16b are different.

The second technical means is a pair of long side portions 2a,
In the rectangular antenna element 1 having 2b and the pair of short side portions 3a and 3b, the pair of long side portions 2a and 2b are sequentially arranged in parallel and a predetermined distance is provided in the short side portions 3a and 3b.
A plurality of antenna elements 1 are arranged side by side on the same plane, and midpoints of the long sides 2a, 2b of the respective antenna elements 1 facing each other form a pair of feeding points 4a, 4b, respectively. In order to form a plurality of antenna units 7, the corresponding feeding points 4a of the antenna elements 1 adjacent to each other,
4b are connected to each other by a pair of first feeding conductors 6a and 6b, respectively, and intermediate parts of the corresponding first feeding conductors 6a and 6b of the adjacent antenna units 7 are connected to each other by a pair of second feeding conductors 10a and 10b. The middle part of the pair of second power feeding conductors 10a and 10b is a pair of third power feeding conductors 13.
In the receiving planar antenna device connected to the receiver side by a and 13b, respectively, the pair of second power feeds is arranged so that the beam directivity angle of the antenna device may vary from the vertical direction in the direction in which the antenna elements 1 are arranged by an angle δ1. Conductors 10a, 10b
Connection positions to the first power feeding conductors 6a and 6b are shifted from the central portion of the first power feeding conductors 6a and 6b by the dimension δA1 in the same direction, and the pair of third power feeding conductors 13a and 13a,
The connection position of 13b to the second power supply conductors 10a and 10b is
The point is that they are displaced in the same direction by the dimension δB1 from the central portions of the second power supply conductors 10a and 10b.

A third technical means is a pair of long side portions 2a,
In the rectangular antenna element 1 having 2b and the pair of short side portions 3a and 3b, the pair of long side portions 2a and 2b are sequentially arranged in parallel and a predetermined distance is provided in the short side portions 3a and 3b.
A plurality of antenna elements 1 are arranged side by side on the same plane, and midpoints of the long sides 2a, 2b of the respective antenna elements 1 facing each other form a pair of feeding points 4a, 4b, respectively. In order to form a plurality of antenna units 7, the corresponding feeding points 4a of the antenna elements 1 adjacent to each other,
4b are connected to each other by a pair of first feeding conductors 6a and 6b, respectively, and the middle parts of the corresponding first feeding conductors 6a and 6b of the adjacent antenna units 7 are connected to each other by a pair of second feeding conductors. In a planar antenna device for reception in which the middle portions of the pair of second feeding conductors are connected to the receiver side by the pair of third feeding conductors, respectively, the pair of second feeding conductors and the pair of third feeding conductors are At least two sets are provided, and the first feeding conductor 6a of the pair of second feeding conductors 10a and 10b of one set is arranged so that the beam directivity angle of the antenna device swings from the vertical direction in the direction in which the antenna elements 1 are arranged by an angle δ1. , 6b is connected to the first feeding conductor 6a,
6b is displaced in the same direction from the central portion of 6b by the dimension δA1, and one pair of the third feeding conductors 13 is provided.
The connection position of a and 13b to the second power feeding conductors 10a and 10b is δB from the center of the second power feeding conductors 10a and 10b.
The pair of second feed conductors of the other set are shifted by 1 in the same direction so that the beam directivity angle of the antenna device swings from the vertical direction in the direction in which the antenna elements 1 are arranged by an angle δ2 different from the angle δ1. The connection positions of 11a and 11b to the first feeding conductors 6a and 6b are the first feeding conductors 6a and 6b.
The pair of third feeding conductors 14a of the other pair are displaced from the central portion of b by the dimension δA2 in the same direction.
The connection position of 14b to the second power supply conductors 11a and 11b is
The point is that they are displaced in the same direction by the dimension δB2 from the central portions of the second power supply conductors 11a and 11b.

[0010]

Since the beam directivity of the antenna device is deviated from the vertical direction in the direction in which the antenna elements 1 are lined up by an angle δ1 and both surfaces of the planar antenna device can be used as receiving surfaces for radio waves, the planar antenna device is By setting upside down so that the left and right sides are reversed, or by installing upside down, the beam directivity angle of the antenna device can be easily changed so as to approach the direction of the transmitting station. Therefore, even if the planar antenna device is installed along the shape of the building, it is possible to minimize the deviation between the beam directivity angle of the antenna device and the direction of the transmitting station.

When the antenna element 1 is connected to the receiver side through the pair of third feeding conductors 13a and 13b, the beam directivity angle of the antenna is changed from the vertical direction to the direction in which the antenna elements 1 are arranged. When the antenna element 1 is connected to the receiver side via the pair of third feeding conductors 14a and 14b of the other pair, the beam directivity angle of the antenna device is changed from the vertical direction to the direction in which the antenna elements 1 are arranged. It swings by δ2. Therefore, when installing the antenna device, the third feeding conductors 13a and 13b, which are connected to the receiver side,
By selecting 14a and 14b and installing the planar antenna device upside down so that it is left-right inverted, or by installing it upside down, the beam directivity angle of the antenna device can be changed in at least four ways. As a result, it becomes possible to bring the beam directivity angle of the antenna device closer to the transmitting station side with finer precision.

Then, when the planar antenna device is actually installed, the third feeding conductor 13a connected to the receiver side,
13b or the third feeding conductors 14a and 14b are selectively selected, and the selected feeding portions 16a and 16b or the feeding portion 1 are selected.
Only one of 7a and 17b is connected to the receiver. The other power supply unit 17a, 17b or the power supply unit 16a not selected
The second feeding conductor and the third feeding conductor on the side of 16b are connected to the first feeding conductors 6a, 6 so that they do not adversely affect reception.
It is necessary to disconnect from b. For example, FIGS.
In the first embodiment, when connecting the power feeding parts 16a and 16b to the receiver, the midway part of the power feeding body 9a of the first power feeding conductor 6a of the sheet material 19 and the tip of the second power feeding conductor 11a of the sheet material 23 are connected. The conductive pin 25 and the conductive pin 25 that connects the midway portion of the power feeding body 9b of the first power feeding conductor 6b of the sheet material 21 and the tip of the second power feeding conductor 11b of the sheet material 24 are extracted from the planar antenna device. The first feeding conductor 6
a, 6b to second feeding conductor 11a and second feeding conductor 11
It suffices to cut b. Further, when connecting the power feeding portions 17a and 17b to the receiver, the conductive pin 25 connecting the midway portion of the power feeding body 9a of the first power feeding conductor 6a of the sheet material 19 and the tip of the second power feeding conductor 10a of the sheet material 20. And sheet material 2
The conductive pin 25 that connects the midway portion of the power feeding main body 9b of the first power feeding conductor 6b and the tip of the second power feeding conductor 10b of the sheet material 22 is pulled out from the planar antenna device, and the first power feeding conductors 6a and 6b. Therefore, the second feeding conductor 10a and the second feeding conductor 10b may be cut.

The method of cutting the second and third power feeding conductors on the non-selected side from the first power feeding conductors 6a and 6b is not limited to pulling out the conductive pins 25, but is also possible by cutting with a cutter or by providing in advance. The switch may be used to disconnect.

[0014]

The present invention will be described below with reference to the illustrated embodiments. In FIG. 1, 1 is a rectangular antenna element having a pair of long side portions 2a and 2b and a pair of short side portions 3a and 3b. Four antenna elements 1 are provided on the same plane,
The pair of long side portions 2a and 2b are sequentially arranged in parallel and the short side portion 3
They are arranged side by side in the a and 3b directions with a predetermined interval. The midpoints of the long sides 2a and 2b of each antenna element 1 which face each other are respectively defined as a pair of feeding points 4a and 4b. If the wavelength of the received radio wave is λ, for example, a pair of long side portions 2
The lengths of a and 2b are 0.50λ and the pair of short side portions 3a and 3b.
Is set to 0.27λ.

Reference numerals 6a and 6b denote a pair of first feeding conductors, which connect the corresponding feeding points 4a and 4b of the adjacent antenna elements 1 to each other, thereby forming an antenna unit 7 formed by combining the adjacent antenna elements 1 with each other. Two are formed.
Each of the first feeding conductors 6a and 6b has feeding bases 8a and 8b protruding inward from the feeding points 4a and 4b and U-shaped feeding bodies 9a and 9b.

Reference numerals 10a, 10b, 11a and 11b denote a pair of second feeding conductors provided in two sets, and connect the corresponding intermediate portions of the first feeding conductors 6a and 6b of the adjacent antenna units 7, respectively. . The connection position of the pair of second power feeding conductors 10a, 10b to the first power feeding conductors 6a, 6b is δA from the center of the first power feeding conductors 6a, 6b.
They are shifted by 1 in the same direction. The first feed conductor 6 of the other pair of the second feed conductors 11a and 11b
The connection positions to a and 6b are respectively shifted from the central portion of the first power feeding conductors 6a and 6b by the dimension δA2 in the same direction.

Reference numerals 13a, 13b, 14a and 14b denote a pair of third feeding conductors provided in two sets, and the second feeding conductor 10a,
10b or the middle portions of the second power supply conductors 11a and 11b are connected to the receiver side, respectively. A pair of third feeding conductors 1
One end of 3a, 13b is the second power supply conductor 11a, 11b.
Is connected to the middle part and the other end is a pair of power feeding parts 16a and 16b for connecting to the receiver side. One end of the pair of third feeding conductors 14a and 14b is the second feeding conductor 1
2a and 12b are connected to the middle part, and the other end is a pair of power supply parts 17a and 17b for connecting to the receiver side.

The pair of third feeding conductors 13 of one set
The connection position of a and 13b to the second power feeding conductors 10a and 10b is δB from the center of the second power feeding conductors 10a and 10b.
They are shifted by 1 in the same direction. The second feed conductor 11 of the pair of the third feed conductors 14a and 14b of the other set.
The connection positions to a and 11b are the second feeding conductors 11a and 11b.
They are displaced from the center of b by the dimension δB2 in the same direction.

The dimension δB1 is set to be twice as long as the dimension δA1. Therefore, the lengths of the feeding conductors from the feeding points 4a and 4b of the antenna elements 1 to the feeding portions 16a and 16b are sequentially different by the dimension δB1. That is, the length of the feeding conductor from the feeding points 4a and 4b to the feeding portions 16a and 16b is set to L1, L2, and L from the left antenna element 1.
3 and L4, L1 = L + 3 × δB1 L2 = L + 2 × δB1 L3 = L + δB1 L4 = L.

The dimension δB2 is set to be twice as long as the dimension δA2. Therefore, the lengths of the feeding conductors from the feeding points 4a and 4b of the antenna elements 1 to the feeding portions 17a and 17b are sequentially different by δB2. In the illustrated example of FIG. 1, the lengths of the first feeding conductors 6a and 6b in the vertical direction are sequentially different, but this is merely shown so that the connection relationship of the feeding conductors is easy to understand. The first feeding conductors 6a and 6b have the same length in the vertical direction, and therefore the second feeding conductors of the first feeding conductors 6a and 6b are in a state of being overlapped with each other. Similarly, the lengths of the second power supply conductors 10a, 10b, 11a, and 11b in the vertical direction are also sequentially different, but in reality, the lengths of the second power supply conductors 10a, 10b, 11a, and 11b in the vertical direction are the same. Are the same, and thus each second feed conductor 10a, 10
The third power supply conductor side of b, 11a, 11b is in a state of being overlapped with each other.

The feeding point 4a of each antenna element 1 is
Since the lengths of the power feeding conductors from 4b to the power feeding portions 16a, 16b are sequentially different by the dimension δB1, the pair of third power feeding conductors 13a, 13b (power feeding portions 16a, 16b) is used. When the antenna element 1 is connected to the receiver side by means of the antenna device, the beam directivity angle of the antenna device is increased by an angle δ1 (= 10 °) from the vertical direction (direction of angle 0 °) to the direction in which the antenna elements 1 are arranged as shown in FIG. It is designed to swing. In addition, the feeding point 4a of each antenna element 1,
Since the lengths of the power feeding conductors from 4b to the power feeding portions 17a, 17b are sequentially different by the dimension δB2, the other pair of the third power feeding conductors 14a, 14b (power feeding portions 17a, 17b) is interposed. When the antenna element 1 is connected to the receiver side by means of the antenna device, the beam directivity angle of the antenna device is changed from the vertical direction (direction with an angle of 0 °) to the direction in which the antenna elements 1 are arranged as shown in FIG. 11 by the angle δ1 (= 10 °). It can be swung by an angle δ2 (= 40 °) different from. The relationship between the dimensions δB1 and δB2 and the angles δ1 and δ2 is as follows.

ΔB1 = Dsin (δ1) δB2 = Dsin (δ2) where D is the width of the positional deviation between the adjacent antenna elements 1. The antenna element 1, the pair of first feeding conductors 6a, 6
b, a pair of second feeding conductors 10a, 10b, 11a, 11
b and a pair of third feeding conductors 13a, 13b, 14a, 1
4b is applied to a plurality of sheet materials, and the plurality of sheet materials are laminated to form an antenna element 1, a pair of first feeding conductors 6a and 6b, a pair of second feeding conductors 10a and 10b,
11a, 11b and a pair of third feeding conductors 13a, 13
planar antenna device main body 29 having b, 14a, 14b
Are formed.

That is, as shown in FIG. 2, the antenna element 1 and the feeding bases 8a and 8b of the first feeding conductors 6a and 6b are provided.
Is applied to the surface of the sheet material 18 by applying a conductive paint or attaching a conductive tape, and the power feeding body 9a of the first power feeding conductor 6a is electrically conductive on the surface of the sheet material 19 as shown in FIG. Applied by applying a conductive paint or attaching a conductive tape, and the second power feeding conductor 10a and the third power feeding conductor 13a are applied to the surface of the sheet material 20 with a conductive coating or a conductive tape as shown in FIG. And the feeding main body 9b of the first feeding conductor 6b as shown in FIG.
Is applied to the surface of the sheet material 21 by applying a conductive paint or attaching a conductive tape, and the second power feeding conductor 10b and the third power feeding conductor 13b are applied to the surface of the sheet material 21 as shown in FIG. , The second power supply conductor 11a and the third power supply conductor 14a are applied to the surface of the sheet material 23 by applying the conductive paint or conducting the conductive paint, as shown in FIG. 8 is applied by attaching a conductive tape, and as shown in FIG. 8, the second power feeding conductor 11b and the third power feeding conductor 14b are applied on the surface of the sheet material 21 by applying a conductive paint or pasting a conductive tape. ing. Each sheet material 18, 19, 20, 21, 22,
23 and 24 are made of transparent, semi-transparent or opaque acrylic resin or the like, and are sequentially laminated as shown in FIG.
The planar antenna device body 29 is formed. The thickness of the planar antenna device body 29 is about 1 to 3 mm.

The plurality of sheet materials 18, 19, 20, 2
The antenna element 1 between 1, 22, 23 and 24, the pair of first feeding conductors 6a and 6b, the pair of second feeding conductors 10a,
10b, 11a, 11b and a pair of third feeding conductors 13
The electrical connection of a, 13b, 14a, 14b is performed by a plurality of sheet materials 18, 19, 20, 21, 2 as shown in FIG.
It is made up of a plurality of conductive pins 25 inserted through 2, 23, 24.

That is, the plurality of sheet materials 18, 19,
20, 21, 22, 23, 24, each sheet material 18, 1
Through holes 26 provided in 9, 20, 21, 22, 23, 24
The cylindrical conductive pin 25 is inserted through the sheet material of the conductive pin 25, and the sheet material 18, 19, 20, 21, 21, 2, 2 of the conductive pin 25 is inserted.
Both end portions 27, 28 projecting outward from 3, 24 are saw-toothed in the circumferential direction, and the both end portions 27, 28 of the sheet materials 18, 19, 20, 21, 22, 23, 24 are formed. The plurality of sheet materials 18, 19, 20, 21, 21, 23, 2 are folded back to the outer peripheral side so as to bite into the edge of the through hole 26.
4 is crimped, and both ends 27, 2 of the conductive pin 25 are
8 multiple sheet materials 18, 19, 20, 21, 22, 22
Antenna element 1 between 3 and 24, pair of first feeding conductors 6
a, 6b, a pair of second feeding conductors 10a, 10b, 11
a, 11b and a pair of third feeding conductors 13a, 13b, 1
4a and 14b are electrically connected.

Specifically, in this embodiment, the conductive pin 2 is used.
Eighteen pieces 5 are provided, and the conductive pins 25 are provided at four positions, that is, the tip of the feeding base 8a of the sheet material 18 and the tip of the feeding body 9a of the sheet material 19, and the tip of the feeding base 8b of the sheet material 18 and the sheet material. 21 at four points with the tip of the power feeding body 9b, two points at the midpoint of the power feeding body 9a of the first power feeding conductor 6a of the sheet material 19 and the tip of the second power feeding conductor 10a of the sheet material 20, the first power feeding conductor 6a of the sheet material 19. Of the power feeding main body 9a and the tip of the second power feeding conductor 11a of the sheet material 23, the midway portion of the power feeding body 9b of the first power feeding conductor 6b of the sheet material 21 and the tip of the second power feeding conductor 10b of the sheet material 22. Two locations, that is, the midway portion of the power feeding body 9b of the first power feeding conductor 6b of the sheet material 21 and the tip of the second power feeding conductor 11b of the sheet material 24 are connected to each other.

FIG. 12 shows another embodiment, in which the two pairs of second feeding conductors 10a, 10b, 11a, 11b and the two pairs of third feeding conductors 13a, 13b, 14 are set.
In addition to a and 14b, another pair of second feeding conductors 1
2a, 12b and another pair of third feeding conductors 15
a, 15b are provided, and a pair of second feeding conductors 12a, 1a
2b connects the center parts of the corresponding first feeding conductors 6a and 6b of the adjacent antenna units 7, respectively.
One end of the pair of third power supply conductors 15a and 15b is connected to the central part of the second power supply conductors 13a and 13b, and the other end of the pair of third power supply conductors 15a and 15b is power supply parts 29a and 29b for connecting to the receiver side. The central portions of the second power supply conductors 13a and 13b are connected to the receiver side, respectively. Therefore, when the antenna element 1 is connected to the receiver side via the pair of third feeding conductors 15a and 15b (feeding portions 29a and 29b), the beam directivity angle of the antenna device is vertical (angle 0) as shown in FIG.
Direction). Then, as compared with the case of the embodiment, the dimension δA1, the dimension δA2, the dimension δ
B1 and the dimension δB2 are set to a large value, and when the antenna element 1 is connected to the receiver side via the pair of third feeding conductors 13a and 13b, the beam directivity angle of the antenna device becomes as shown in FIG.
As shown in FIG. 3, the antenna element 1 is displaced from the vertical direction (direction with an angle of 0 °) by an angle δ1 (= 30 °),
Further, when the antenna element 1 is connected to the receiver side through the pair of third feeding conductors 14a and 14b, the beam directivity angle of the antenna device is changed from the vertical direction (direction of angle 0 °) as shown in FIG. Angle δ2 (= 6
Only 0 °) can be shaken. The other points are the same as those of the above-mentioned embodiment.

FIG. 14 shows another embodiment, in which two rectangular antenna elements 1 are provided on the same plane at predetermined intervals and the corresponding feeding points 4a and 4b of each antenna element 1 are provided.
Comrades are connected to each other by a pair of first power feeding conductors 6a and 6b, respectively, and a middle part of the pair of first power feeding conductors 6a and 6b is a pair of second power feeding conductors 10a and 10b and a pair of second power feeding conductors 11a and 11b. Each is connected to the receiver side. One end of each of the pair of second power supply conductors 10a and 10b is connected to a midway portion of the first power supply conductors 6a and 6b, and the other end thereof is connected to the receiver side.
16b, one end of the pair of second power supply conductors 11a and 11b is connected to the middle of the first power supply conductors 6a and 6b, and the other end is connected to the receiver side.
17b.

The pair of second feeding conductors 10a,
The connection position of 10b to the first power supply conductors 6a and 6b is displaced from the center of the first power supply conductors 6a and 6b by the dimension δA1 in the same direction. Therefore, the lengths of the feeding conductors from the feeding points 4a and 4b of the antenna elements 1 to the feeding portions 16a and 16b differ by twice the dimension δA1, and therefore the pair of second feeding conductors 10a and 10b ( Power supply 16
When the antenna element 1 is connected to the receiver side via a, 16b), the beam directivity angle of the antenna device can be deviated from the vertical direction by an angle δ1. Further, the first feeding conductors 6a, 6b of the pair of second feeding conductors 11a, 11b.
The connection positions to the first feeding conductors 6a and 6b are displaced from each other in the same direction by a dimension δA2. Therefore, from the feeding points 4a and 4b of each antenna element 1 to the feeding section 1
The lengths of the feeding conductors reaching 7a and 17b differ by twice the dimension δA2, so that the pair of second feeding conductors 11
When the antenna element 1 is connected to the receiver side via a and 11b (feeding parts 17a and 17b), the beam directivity angle of the antenna device can be deviated from the vertical direction by an angle δ2. The other points are the same as those of the above-mentioned embodiment.

FIG. 15 shows another embodiment, in which the antenna element 1, the pair of first feeding conductors 6a and 6b, and the pair of second feeding conductors 10a, 10b and 11 are provided on the surface of one sheet material 33.
a, 11b and a pair of third feeding conductors 13a, 13b, 1
4a, 14b are applied by applying a conductive paint or attaching a conductive tape, and the antenna element 1, the first feeding conductors 6a, 6b, the second feeding conductors 10a, 10b, 11a,
11b and third feeding conductors 13a, 13b, 14a, 14
An insulating material 31 such as an insulating sheet or an insulating paint is interposed at a portion where b intersects or overlaps. The other points are the same as those of the above-mentioned embodiment.

In the above embodiment, the beam directivity angle of the antenna device can be varied by 10 °, 40 ° or 0 °, 30 °, 60 °.
The beam deflection angle of the antenna device is not limited to these angles, and for example, the dimension δA1, the dimension δA2, and the dimension δ can be used.
When B1 and the dimension δB2 are adjusted and the antenna element 1 is connected to the receiver side via the pair of third feeding conductors 13a and 13b of one set, the beam directivity angle of the antenna is changed as shown in FIG.
When the antenna element 1 is connected to the receiver side via the other pair of the third feeding conductors 14a and 14b as shown in FIG. 6, the beam directivity angle of the antenna device is shown in FIG. Thus, it may be possible to swing by an angle of 45 °.

In the above embodiment, the pair of first power feeding conductors 6a and 6b and the pair of second power feeding conductors 10a, 10b and 1 are used.
1a, 11b, 12a, 12b and a pair of third feeding conductors 13a, 13b, 14a, 14b, 15a, 15b
It is composed of a conductive paint or a conductive tape, but instead of this, a pair of first power feeding conductors 6a, 6b and a pair of second power feeding conductors 10a, 10b, 11a, 11b, 1
2a, 12b and a pair of third feeding conductors 13a, 13b,
You may make it comprise 14a, 14b, 15a, 15b with a wire cable.

Further, in the above-mentioned embodiment, the planar antenna device is provided with four or two antenna elements 1, but the number of antenna elements 1 and antenna units 7 is not limited to the case of the embodiment. Further, in the above-described embodiment, the rectangular antenna element 1 having the pair of long side portions 2a and 2b and the pair of short side portions 3a and 3b has the pair of long side portions 2a and 2b sequentially arranged in parallel and having a short length. A plurality of side surfaces 3a, 3b are provided side by side on the same plane so as to be spaced apart from each other by a predetermined distance. 4b, instead of this, a plurality of antenna elements 1 are arranged on the same plane so that the pair of short side portions 3a and 3b are sequentially arranged in parallel and a predetermined distance is provided in the long side portions 2a and 2b. Alternatively, the short sides 3a and 3b facing each other may be provided as a pair of feeding points 4a and 4b, respectively.

Further, each sheet material 18, 19, 20, 21
And the like, the antenna element 1, the pair of first feeding conductors 6a and 6b, and the pair of second feeding conductors 10a, 10b and 11
a, 11b and a pair of third feeding conductors 13a, 13b, 1
The combination of 4a and 14b is not limited to the case of the above embodiment, and various combinations are conceivable.

[0035]

According to the present invention, the feeding points 4a and 4b of the antenna elements 1 are fed from the feeding points 16a and 1b so that the beam directivity angle of the antenna device can be deviated from the vertical direction by an angle δ1.
Since the lengths of the feed conductors reaching 6b are different,
It is possible to easily change the beam directional angle of the antenna device so that it approaches the direction of the transmitting station by installing the planar antenna device upside down so that it is left-right reversed, or by installing it upside down. , Even if the planar antenna device is installed under the eaves or roof of a building along the shape of the building, it is possible to reduce the deviation between the beam directivity angle of the antenna device and the direction of the transmitting station, and to improve reception. It is easy and easy to install under the eaves or on the roof.

Further, according to the present invention, the beam directivity angle of the antenna device can be selectively selected from a direction swinging from the vertical direction by an angle δ1 and a direction swinging by an angle δ2 different from the angle δ1. Therefore, it is possible to change the beam directivity angle of the antenna device to at least four ways by installing the planar antenna device upside down so that it is turned upside down, or by installing it upside down. The beam directivity angle can be made closer to the transmitting station side with finer precision, and therefore, it becomes possible to sufficiently cope with the deviation of the beam directivity angle of the planar antenna device with respect to the transmitting station.

[Brief description of drawings]

FIG. 1 is a front view of a principle configuration showing an embodiment of the present invention.

FIG. 2 is a front view of a sheet material 18.

FIG. 3 is a front view of a sheet material 19.

FIG. 4 is a front view of the sheet material 20.

5 is a front view of the sheet material 21. FIG.

FIG. 6 is a front view of the sheet material 22.

FIG. 7 is a front view of a sheet material 23.

FIG. 8 is a front view of the sheet material 24.

FIG. 9 is a cross-sectional view of the antenna device.

FIG. 10 is a sectional view of a conductive pin portion.

FIG. 11 is a graph showing directional characteristics of the antenna device.

FIG. 12 is a front view of the principle configuration showing another embodiment.

FIG. 13 is a graph showing directional characteristics of the antenna device.

FIG. 14 is a front view of a principle configuration showing another embodiment.

FIG. 15 is a front view of a principle configuration showing another embodiment.

FIG. 16 is a graph showing directional characteristics of the antenna device.

FIG. 17 is a front view of a principle configuration showing a conventional example.

FIG. 18 is a graph showing directional characteristics of the antenna device.

[Explanation of symbols]

 1 Antenna Element 2a Long Side 2b Long Side 3a Short Side 3b Short Side 4a Feed Point 4b Feed Point 6a First Feed Conductor 6b First Feed Conductor 7 Antenna Unit 10a First Feed Conductor 10b First Feed Conductor 11a No. 1 feeding conductor 11b 1st feeding conductor 13a 2nd feeding conductor 13b 2nd feeding conductor 14a 2nd feeding conductor 14b 2nd feeding conductor

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasunori Sueyoshi 1-47 Shikitsuhigashi, Naniwa-ku, Osaka-shi, Osaka Kubota Co., Ltd. (72) Inventor Takahiro Mizoguchi Toichiichi, Shizutsu, Naniwa-ku, Osaka 2-47, Kubota Co., Ltd.

Claims (3)

[Claims] 1. A plurality of rectangular antenna elements (1) are provided on the same plane at a predetermined interval, and a pair of opposing side portions of each antenna element (1) are provided with a pair of power feeds, respectively. Points (4a) and (4b) are set, and each antenna element (1)
In the planar antenna device for reception, the corresponding feeding points (4a) and (4b) are connected to the pair of feeding portions (16a) and (16b) for connecting to the receiver side via feeding conductors, respectively. , The feeding point (4) of each antenna element (1) is adjusted so that the beam directivity angle of the antenna device may deviate from the vertical direction by an angle δ1.
A planar antenna device for reception, characterized in that the lengths of the feeding conductors from (a) and (4b) to the feeding portions (16a) and (16b) are made different. 2. A rectangular antenna element (1) having a pair of long side portions (2a), (2b) and a pair of short side portions (3a), (3b) is a pair of long side portions (2a). ), (2b) are sequentially arranged in parallel and a plurality of them are arranged side by side on the same plane so as to be spaced at predetermined intervals in the directions of the short sides (3a), (3b), and the antenna elements (1) face each other. Long side (2
a) and (2b) have a pair of feeding points (4a),
(4b), so as to form a plurality of antenna units (7) formed by combining adjacent antenna elements (1) with each other, corresponding feeding points (4a), (4b) of adjacent antenna elements (1) Comrades have a pair of first feeding conductors (6
a) and (6b) respectively, and the corresponding first feeding conductors (6a), (6a), of the adjacent antenna units (7),
(6b) A pair of second power supply conductors (10
a) and (10b), respectively, and the middle portions of the pair of second feeding conductors (10a) and (10b) are connected to the receiver side by the pair of third feeding conductors (13a) and (13b). In the receiving planar antenna device, the pair of second feeding conductors (10a) and (10b) are arranged so that the beam directivity angle of the antenna device is swung from the vertical direction in the direction in which the antenna elements (1) are arranged by an angle δ1. The connection positions to the first power feeding conductors (6a) and (6b) are respectively displaced from the central portion of the first power feeding conductors (6a) and (6b) by the dimension δA1 in the same direction, and the pair of third power feeding conductors are provided. (13a), (13b) second feeding conductor (10a),
The connection position to (10b) is the second feeding conductor (10a),
A planar antenna device for reception, wherein the planar antenna device for reception is shifted from the center of (10b) by a dimension δB1 in the same direction. 3. A rectangular antenna element (1) having a pair of long side portions (2a), (2b) and a pair of short side portions (3a), (3b) comprises a pair of long side portions (2a). ), (2b) are sequentially arranged in parallel and a plurality of them are arranged side by side on the same plane so as to be spaced at predetermined intervals in the directions of the short sides (3a), (3b), and the antenna elements (1) face each other. Long side (2
a) and (2b) have a pair of feeding points (4a),
(4b), so as to form a plurality of antenna units (7) formed by combining adjacent antenna elements (1) with each other, corresponding feeding points (4a), (4b) of adjacent antenna elements (1) Comrades have a pair of first feeding conductors (6
a) and (6b) respectively, and the corresponding first feeding conductors (6a), (6a), of the adjacent antenna units (7),
(6b) Receiving planar antennas in which the middle portions are connected to each other by a pair of second feeding conductors, and the middle portions of the pair of second feeding conductors are connected to the receiver side by a pair of third feeding conductors, respectively. In the device, at least two pairs of the pair of second feeding conductors and the pair of third feeding conductors are provided, and a beam directivity angle of the antenna device is swung by an angle δ1 from a vertical direction to a direction in which the antenna elements (1) are arranged. And one pair of the second feeding conductors (10a), (10b)
The connection position to the first power feeding conductors (6a) and (6b) is δA1 from the center of the first power feeding conductors (6a) and (6b).
Are shifted in the same direction respectively, and the connection position of the one pair of the third feeding conductors (13a, (13b to the second feeding conductors (10a, (10b)) is the second feeding conductor (10a), An angle δ2 different from the angle δ1 in the direction in which the antenna elements (1) are arranged from the vertical direction in the beam directivity angle of the antenna device is shifted from the center of (10b) by the dimension δB1.
So that only the first feed conductors (6a), (6) of the other pair of second feed conductors (11a), (11b)
The connection position to b) is the first feeding conductor (6a), (6b)
Of the pair of third feeding conductors (14
a), (14b) second power supply conductors (11a), (11)
The connection position to b) is the second feeding conductors (11a), (11).
A planar antenna device for reception, wherein the planar antenna device for reception is shifted from the central portion of b) by the dimension δB2 in the same direction.