JPH1188035A - Plane radiation antenna, and transmission and reception system using the antenna - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive plane radiation antenna which never impairs the landscapes, can be stably attached and held and also can be safely installed despite a large area secured for reception. SOLUTION: A square framework consisting of the horizontal frames 52 and 52 and the vertical frames 53 and 53 which are made of a conductive material is used as an antenna main body. Then the resonance axes 51 and 51 are placed opposite to both frames 52, and the feeding points 9 and 9 are set at the tip sides of both shafts 51. A plane radiation antenna of such a constitution is used as a common antenna that can transmit and receive the radio waves or as one of plural receiving antennas which receive the radio waves from the common antenna. Thus, the radio waves are transmitted by radio to the radio interference noise areas via a radio transmission unit having a transmitter means which transmits the received radio waves.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to HF (hereinafter referred to as "HF" in the present specification)
Also used. The present invention relates to a planar radiation antenna as a surface radiation antenna capable of receiving radio waves in the band and the FM band, and a transmission / reception system using the antenna.

[0002]

2. Description of the Related Art A surface radiation antenna has a receiving element formed of a conductive material in a rectangular frame shape. The ratio of the long side to the short side is 2: 1 to 3: 1 and both sides are long. It has been found that in the case where a feeding point is provided at about one quarter from one end in the unit frame, it can be used efficiently and effectively not only for reception as a resonance type but also for transmission.

[0003] The feature of this type of antenna is that it has a large effective aperture area and is efficient, and that when used alone, a practical sensitivity equivalent to 5 to 10 elements of a Yagi-type antenna can be obtained. Or on the roof, or on the outer (or inner) wall.

[0004]

As described above, according to the conventional Yagi-type antenna, the antenna can be mounted only on the roof or the roof of a building, which not only impairs the beauty of the scenery. In addition, there is a problem that the durability is poor, such as the pillars are damaged by the snow and snow, and the main body is corroded by salt damage, and the mounting work is performed at a high place with poor scaffolding, which causes a risk.

[0005] Regarding the reception efficiency, as the surface area increases, the reception efficiency increases and the sensitivity improves. However, conventionally, an aluminum pipe or a strip material is used for the element. Since it becomes large and heavy, the installation requires not only the strength of the pillar but also the strength of the foundation, so that there is a problem that the cost is high.

Further, conventional antennas use large-sized antennas such as Yagi-type and dipole-type antennas.
It is mainly limited to outdoor use, and because of its high directivity, it is necessary to install a plurality of UHF and VHF antennas facing the television station. Also, conventional antennas
Due to the large size, the mounting place is limited, so that it cannot be used indoors, underground premises, and the like. As described above, the conventional antenna requires a plurality of antennas because of its high directivity, and its use range is extremely narrow.

On the other hand, the conventional antenna has a problem that a TV is not clearly displayed in a radio interference area where a building or a mountain is shaded. To solve this problem, a large antenna is installed on the roof of a building or the like. Stand up, and receive the radio wave received by this large antenna with a cable and attach the terminal to the house and each room of the building that is behind the building with a cable, or
A solution has been made by converting to a cable television (CATV).

However, since the conventional antenna uses a large-sized antenna, its use range is extremely narrow. Further, the use of a cable television (CATV) or the like is not possible with telephone poles, cables, and boosters (amplifiers). There is a problem that enormous cost is required for wiring work such as the above.

The present invention has been made in view of the circumstances described above,
Offers a flat radiation antenna that can be installed easily and stably without any inconveniences that harm the landscape, can take up a large receiving area even with a small size, makes installation work safe, and can be provided at low cost. The purpose is to do.
In addition, the present invention can be applied to an HF band or an FM
It is an object of the present invention to provide a planar radiation antenna capable of efficiently transmitting and receiving radio waves in a band. further,
An object of the present invention is to provide a wireless transmission / reception system using the above-mentioned planar radiation type antenna.

[0010]

In order to solve the above problems, the invention of the planar radiation type antenna according to the first aspect is framed in a rectangular frame shape by right and left vertical frames and upper and lower horizontal frames made of conductive material, respectively. A rectangular frame is used as an antenna body, and a resonance axis is provided on the left and right vertical frames so as to face each other, and a feed point is provided on a tip side of the resonance axis.

According to the first aspect of the invention, the radio wave resonated at the center of the opposed resonance shaft is guided to the feeding point. According to the first aspect of the present invention, since the antenna has the form of a surface radiation antenna and the surface area of the frame is large, it is possible to efficiently and effectively receive radio waves in the HF band and the FM band. . Also, there is no need to install a plurality of antennas at an accurate angle as in a conventional Yagi antenna.

Further, the invention of the planar radiation type antenna according to the second aspect is based on the premise of the flat radiation type antenna according to the first aspect, wherein a reflection plate is provided on each of the left and right vertical frames.

According to the planar radiation type antenna according to the second aspect, since the left and right vertical frames are provided with the reflectors, the relative gain is improved, and the radio waves in the HF band and the FM band are efficiently and effectively received. can do. It is also effective for ghost countermeasures.

According to a third aspect of the present invention, the length of the left and right vertical frames is reduced to one-fifth to one-fifth of the length of the left and right vertical frames, based on the premise of the first aspect.
The resonance shaft is provided at the position of.

According to the planar radiation type antenna of the third aspect, the resonance axis is located at a position which is 1/2 (1/2) to 1/5 (1/5) of the length of the left and right vertical frames. With the configuration provided to oppose, the radio wave resonated at the center of the opposing resonance axis is guided to the feed point. According to the third aspect of the invention, the impedance can be adjusted according to the frequency, and the antenna can be used as a planar radiation antenna having a high gain.

According to a fourth aspect of the present invention, there is provided a planar radiation type antenna which is framed by left and right vertical frames and upper and lower horizontal frames, each of which is made of extruded aluminum material. In a frame in which a plate is accommodated, a resonance axis is provided on a back plate with the frame as an antenna body, and a feeding point is provided on a tip side of the resonance axis.

According to another aspect of the present invention, there is provided an aluminum sash framed by left and right vertical frames and upper and lower horizontal frames, such as a window frame to be housed in a window of a building or a shoji to be housed in a window frame. In the above structure, the frame is used as an antenna body, and resonance axes are provided to be opposed to the left and right vertical frames, and a feeding point is provided on a tip side of the resonance axis.

According to the fourth or fifth aspect of the present invention, since the planar radiation type antenna is configured as described above, each of them takes the form of a planar radiation antenna.
Moreover, since the frame has a complicated cross section and a large surface area as a frame or sash structure, the HF band or the FM
Band radio waves can be received efficiently and effectively, and because they are also used as fittings and furniture necessary for housing the building, they are economically inexpensive.

Further, the installation of the planar radiation type antenna according to claim 4 or 5 is performed according to the mounting as a picture frame or a sash, so that there is no danger in the installation work and the reception efficiency can be improved. The location of the antenna can be selected, and the function of the planar radiation antenna is directivity in all directions (approximately 360 degrees), so that it can be used in any building and the selection is easy.

Further, in the planar radiation type antenna according to the sixth aspect, the conductive material connected in a plurality of frames by a plurality of right and left vertical sides and a plurality of upper and lower horizontal sides is used as an antenna body. Provide opposed resonance axes inside the sides,
A power supply point is provided on the tip side or the lower horizontal side of the resonance shaft, and a front insulating plate and a rear insulating plate sandwiching the frame-shaped conductive material are provided.

According to the sixth aspect of the present invention, the radio wave resonated at the center of the opposed resonance shaft is guided to the feeding point. The antenna has a form of a planar radiation antenna, and is connected to a plurality of frames by a plurality of left and right vertical sides and a plurality of upper and lower horizontal sides, so that even if the surface area is small, the reception area is large. Therefore, radio waves in the HF and FM bands can be efficiently and effectively received. Further, since the front and back insulating plates are provided, it is possible to efficiently and effectively receive radio waves in the HF and FM bands from both the front and back surfaces. Furthermore, the mounting location of the planar radiation type antenna is small and lightweight, and the performance does not change even if it is placed upright or flat,
It can be placed on a wall, on a roof, on a TV, or the like, or placed on a flat surface above the ceiling or tabletop, regardless of the mounting angle.

On the other hand, a transmission / reception system using a planar radiation type antenna according to claim 7 is the same as the transmission / reception system according to any one of claims 1 to 6, except that the planar radiation type antenna according to claim 1 is Arranged as any one of a plurality of receiving antennas for receiving radio waves from the common antenna, and transmitting radio waves to a radio interference area wirelessly through a radio transmission unit having a transmitting means for transmitting at least the received radio waves. It is characterized by transmitting.

According to the seventh aspect of the present invention, the received radio wave received by the common antenna is transmitted wirelessly to a plurality of receiving antennas located in the radio interference area via the radio transmission unit. Therefore, the TV can be viewed on the screen in a beautiful image even in an area where radio waves are obstructed by a shadow of a building or a mountain. That is, since the planar radiation type antenna having the above configuration is a small antenna having a wide band in the HF band and the FM band and weak directivity, the antennas can be used mutually to shade buildings and mountains. Thus, it is possible to provide a transmission / reception system that allows a TV (television) to be viewed with a beautiful image even in a radio interference area.

For example, the flat radiation type antenna according to any one of claims 1 to 6 may be installed behind a building by using a common antenna as a parent antenna in a place such as the roof of a building where high quality radio waves can be received. The above-mentioned receiving antenna for receiving the radio wave from the common antenna is arranged as a child antenna on the roof or the like of each house in the radio interference area. The radio transmitting unit modulates the received radio wave received by the common antenna to UHF (or VHF) by the modulating means, amplifies it by the amplifying means, and receives the signal from the transmitting antenna in a house which is obstructed by the transmitting means. Can be sent wirelessly. With such a wireless transmission / reception system, a TV can be viewed on a clear screen even in an electromagnetic interference area where a building or a mountain is shaded (including the surrounding area).

In addition, the flat radiation type antenna according to any one of the first to sixth aspects of the present invention is provided with a common antenna at a place where good quality radio waves can be received, such as a building roof. On the other hand, the reception antenna for receiving radio waves from the common antenna is connected to the basement of the building or each room of the common building. In this case, it is preferable that the receiving antennas are arranged on the ceiling, the back of the ceiling, the wall surface, or the like, but the antennas may be placed vertically or in a flat state. Then, in the basement of the building or in each room of the common building, transmitting means arranged in each radio interference area via a cable connected to the common antenna are arranged. Also, an amplifying unit and a distribution unit for amplifying the received radio wave received by the common antenna are arranged in the common antenna, and the received radio wave is distributed after being received. In this way, by receiving the radio waves emitted by the transmitting means via the receiving antenna, the TV can be viewed with beautiful images even in the basement premises or each room of the common building.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 shows a planar radiation type antenna showing an example of an embodiment in a frame F.
This planar radiation type antenna is framed by left and right vertical frames 2 and 2 and upper and lower horizontal frames 3 and 3 as a frame F, and the frame forms an antenna body (receiving element), in which a plate glass 4 and a back plate 5 are provided. And the work 7 is sandwiched between them.

Feeding points 9, 9 are provided on the left and right vertical frames 2, 2.
The resonance shafts (feed members) 11 and 11 are attached to the left and right vertical frames 2 and 2 on the back side of the frame F so as to face each other. And the coaxial cable 15 is pulled out from the power supply 13. Unlike this embodiment, the power supply 13 may be screwed to the back plate 5 and connected to the power supply points 9 and 9 therefrom.

Each of the frames 2 and 3 has a dovetail groove 17 which is open on the back surface for the frame, and has an L-shaped connecting plate 19 therein.
Is inserted into the dovetail groove 17 so that a notch 21 into which the end of the resonance shaft 11 fits is provided on the inner side wall of the dovetail groove 17. The end is screwed to the bottom wall of the dovetail groove 17.

As for the method of fixing the back plate 5, a nut 23 is inserted into the dovetail groove 17 and a screw 25 for pushing through the bottom wall of the dovetail groove 17 is screwed into the nut 23. In the picture frame, there are various ways of stopping this. For example, a leaf spring is interposed between the projecting portion where the dovetail groove 17 is formed and the back plate 5, or the leaf spring is hooked on the dovetail groove 17. Means may be taken to press the back plate 5 at its end. Since the position of such a back plate holder can be freely selected, if it is used as the resonance shafts (feed members) 11, 11, the feed point can be adjusted freely.

(Second Embodiment) FIG. 2 shows an example of an embodiment in which a sliding screen S of an aluminum sash for windows is used. In this case, too, the left and right vertical frames 2 and 2 as rigid frames are used. The upper and lower horizontal frames 3 and 3 as the upper and lower frames form a rectangular frame, into which the plate glass 35 is fitted via a rubber tight material. Was provided, and the power supply 13 was attached to the indoor side of the plate glass 35. In this embodiment, the left and right vertical frames 2 and 2 are similar to the aluminum sash for windows.
Each of the upper and lower horizontal frames 3 and 3 has a bent structure so that the cross-sectional area is complicated and large.

A thin copper strip (aluminum sheet or copper wire may be used) is used for the resonance axes (feed members) 11 and 11, and the copper strip is embedded in the sheet glass 35.
May be fitted doubly and disposed between them. In the case of the shoji screen S, the coaxial cable 15 accompanies the opening / closing operation. However, when the window frame is implemented, the fixed stability is maintained. In particular, when the sheet glass is a window frame of a fitting window fitted in the window frame, the coaxial cable is disposed better. Further, the embedding window can be implemented in the same manner as the shoji S as described above. The resonance axis (feeding material) 1
The positions of the power supply points 1 and 11 and the power supply points 9 and 9 can be provided at positions similar to those in a third embodiment described later (see FIG. 6).

In the shoji screen S of the above embodiment, one sheet glass 35 is fitted. However, a shoji screen in which a middle crosspiece is incorporated between the upper and lower horizontal frames 3 and 3 and two upper and lower glass sheets are fitted is often used. FIG. 3 shows the resonance axis 11, 1
1 and the case where the power feeding body 13 is configured.

The middle crosspiece 37 generally has left and right side walls 39, 3
9 has upper and lower horizontal walls 41, 41, and a hollow 43 therebetween.
In addition, upper and lower ends are dovetail grooves 45, 45 into which a plate glass is fitted. Therefore, the middle rail 37 is divided into left and right resonance shafts 11 and 11, and both are connected by the power supply body 13 (case) having substantially the same cross-sectional shape. The case is made of plastic, and has connection pieces 42, 42 fitted on the hollows 43, 43 of the resonance shafts 11, 11 at both ends for connection.

(Third Embodiment) FIG. 4 shows a third embodiment of the present invention, which is a planar radiation antenna mounted on an attic, a roof, or an outer wall. Left and right vertical frame 5 made of conductive material
2, 52 and upper and lower horizontal frames 53, 53 form a rectangular frame, and the rectangular frame forms an antenna body (receiving element). In order to provide the feeding points 9, 9 on the left and right vertical frames 52, 52, resonance shafts 51, 51 are attached inside the left and right vertical frames 52, 52 so as to face each other. Are provided with the above-mentioned feeding points 9 and 9,
The coaxial cable 15 is drawn out of the power supply 13 from the power supply 13. The conductive material of the present embodiment is made of an extruded aluminum material, but may be made of another metal such as brass, a copper plate, or brass. In addition, unlike the first and second embodiments, the present embodiment is a frame-shaped planar antenna on which no decorative element is applied, but is similar to the first and second embodiments. It is also possible to apply to the frame F and the sash S made of aluminum.

In the present embodiment, the left and right vertical frames 52, 52 are provided with parallel reflecting plates 54, 54, respectively. The reflecting plates 54, 54 are aluminum plate-like members provided on both outer sides of the left and right vertical frames 52, 52. The reflectors 54, 54 are provided at the central member 5 thereof.
4a is screwed and fixed to the resonance shafts 51, 51. In addition, an insulator is interposed between the connecting portions of the reflection plates 54, 54 and the left and right vertical frames 52, 52. Thus, by providing the reflection plates 54, 54, the sensitivity becomes better than that in which the reflection plates 54, 54 are not provided.

In this embodiment, as in the second embodiment, the left and right vertical frames 2 and 2 and the upper and lower horizontal frames 3 and 3 are bent so as to have a complicated and large cross-sectional area. It is preferable that the structure be provided. That is, as shown in FIG. 5, the reception efficiency is improved when the left and right vertical frames 2 and 2 and the upper and lower horizontal frames 3 and 3 have a complicatedly bent structure in which the cross-sectional shape is bent inward.

In this embodiment, as shown in FIG. 6, the resonance shaft (feeding material) is provided at a position L3 which is a half of the length L1 of the left and right vertical frames 52, 52 and is a fifth of the length L1. 5
1, 51 are provided facing each other, and feed points 9, 9 are provided. That is, the left and right vertical frames 52,
52 from the position L2 which is 1/2 (1/2) of the length L1
/ 5 (one-fifth) position L3, the resonance axis 5
1, 51 are provided corresponding to the operating frequency, and feed points 9, 9 are provided at the positions of the resonance shafts 51, 51 of the left and right vertical frames 52, 52, and the resonance shafts 51, 51 and the feed points 9, 9 are provided. Are configured to be the same. By providing the resonance shafts 51 and 51 and the feeding points 9 and 9 at such positions, the radio waves resonated at the center of the opposed resonance shafts 51 and 51 can be guided to the feeding points 9 and 9. The impedance can be adjusted according to the frequency, and the antenna can be used as a planar radiation antenna having a high gain. The positions of the resonance axes (feed members) 11 and 11 and the feed points 9 and 9 in the first and second embodiments are provided at similar positions.

In this embodiment, the ratio of the length of the left and right vertical frames 52, 52 to the length of the upper and lower horizontal frames 53, 53 is appropriately changed according to the wavelengths of the UHF band and the VHF band. I do.

(Fourth Embodiment) FIGS. 7 and 8 show an embodiment in which a picture frame F and a panel are implemented. The inside of a wooden picture frame F is interposed via a glass plate of the picture frame F.
A thin planar radiation antenna 61 is housed. The planar radiation type antenna 61 includes a rectangular front insulating plate 62, a rear insulating plate 63, and a conductive material 64 interposed between the rectangular insulating plates 62, 63. . The planar radiation type antenna 61 of the present embodiment includes:
It is a small postcard size (about 10 cm wide, about 15 cm long, about 3 mm thick) placed on a table,
By connecting four of these small planar radiation antennas 61,
It can also be used as A4 size paper. In the frame F and the panel, a sheet 68 on which pictures, characters, and the like are drawn is stored inside the glass plate.

The conductive material 64 is a flat material having a thickness of about 1.5 cm to 3 mm. As shown in FIGS. 8 and 9, a plurality of left and right vertical sides 65a, 65b, 65c. A plurality of upper and lower horizontal sides 66a, 66b, 66c,... Are mutually connected in a plurality of frame shapes, and an antenna main body (receiving element) is formed by this connection state. In this embodiment mode, the aluminum, brass or copper plate is formed by pressing (punching). However, the forming method is not limited to this, and the conductive member is formed by a processing method of an electronic substrate or the like. May be something.

The left and right vertical sides 65a, 65b, 65c
The upper and lower horizontal sides 66a, 66b, 66c are connected in a frame shape by three conductive members 64, respectively.
Resonant shafts (feed portions) 67, 67 are provided at substantially the center in the inward direction of a, 65b, 65c. Although the left and right vertical sides 65a, 65b, 65c and the upper and lower horizontal sides 66a, 66b, 66c of the present embodiment have been described as three, two or more of them may be provided. As described above, the plurality of left and right vertical sides 65a, 65b, 65c and the plurality of upper and lower horizontal sides 66a, 66b, 66c are connected in a plurality of frame shapes.
Even if the surface area of the rectangular insulating plate 62 on the front side and the insulating plate 63 on the back side are small, the transmitting and receiving area can be increased. Also, the left and right vertical sides 65a, 65b, 65c and the upper and lower horizontal sides 6
The frame-like connection state of 6a, 66b, and 66c is not limited to the one shown in FIG. 9, but is included in the present invention as long as a plurality of rectangular (frame-like) shapes are formed. That is, in FIG. 9, the outer sides 65a, 65b, 66a, 66b of the plurality of left and right vertical sides 65a, 65b, 65c and the plurality of upper and lower horizontal sides 66a, 66b, 66c are referred to as "composite element". , The innermost sides 65c, 66c may be referred to as "matching portions", and the opposite side of the resonance shafts 67, 67 may be referred to as "resonance point 69".
5a, 65b, 66a, 66b and matching portions 65c, 66
The shape of c and the resonance shafts 67, 67 can be configured to be planar, linear, square, cylindrical, or the like.

The coaxial cable 15 is drawn from the resonance shafts 67 to provide the feeding points 9A. In the present embodiment, the left and right vertical sides 65a, 65
b, 65c, the resonance axes 67, 67 and the feeding point 9
A and 9A are provided and the coaxial cable 15 is drawn out, but the feeding points 9 are provided at the lower side portions 66a, 66b and 66c.
A and 9A may be provided and pulled out from the coaxial cable 15. Further, the insulating plate 64 on the front side and the insulating plate 65 on the back side sandwiching the rectangular conductive material 64 are only required to be an insulating material such as glass, but are formed of plastic or epoxy resin material in the present embodiment. . Also in the present embodiment, the positions of the resonance axes (feed members) 67 and 67 and the feed points 9 and 9 can be provided in the same positions as in a third embodiment described later ( See FIG. 6). In addition,
In the present embodiment, since the frame F is configured to be able to accommodate the planar radiation antenna 61 as a separate member using a normal frame or panel, the frame F can be accommodated and used in panels of various shapes. It is.

With respect to the installation of the planar radiation antenna 61, the function of the planar radiation antenna is almost directivity in all directions (approximately 360 degrees), but it is also possible to install a plurality of antennas. For example, if two planar radiation antennas 61 are arranged at an angle of 90 degrees and connected to a receiving system, transmission and reception can be performed from all directions. Such installation is particularly effective when installed on a moving body such as an automobile, a ship, and a train. Such a plurality of arrangements are also effective for the planar radiation antennas of the first, second, and third embodiments.

(Configuration of Transmitting / Receiving System) Next, the installation of the antenna 61 according to the above-described embodiment will be described with reference to the planar radiating antenna according to the first, second, and third embodiments, the parent antenna or the child antenna. It is also possible to install as a sword. In this case, for example, the first, second, and third
The flat radiation antenna of the fourth embodiment is installed on an attic or the like, while the flat radiation antenna 61 of the fourth embodiment is installed on a television (TV) or the like, and is directed toward the parent antenna. . With such an installation, it is possible to efficiently and effectively transmit and receive radio waves in the HF or FM band without lengthening the wiring or recognizing the installation location of the antenna indoors. Note that, contrary to the above configuration, the planar radiation antennas of the first, second, and third embodiments are used as child antennas, and the planar radiation antenna 61 of the fourth embodiment is used.
Can be installed as a parent antenna.

Next, a specific transmission / reception system using the planar radiation antenna of each of the above embodiments will be described. First, FIG. 10 shows an example of a system for transmitting and receiving TV radio waves in a radio interference area. As described above, the common antenna 61A is used as a parent antenna in a place where high-quality radio waves can be received, such as the rooftop of the building BL, and the common antenna 61A is used as a roof of each house in a radio interference area behind the building. Antenna 6 for receiving radio waves from
1B is arranged as a child antenna. A wireless transmission unit 71 that wirelessly transmits a radio wave to a receiving antenna 61B disposed in a radio wave interference area is connected to the common antenna 61A via a coaxial cable 15. 10 to 13, the common antenna 61 is used.
A will be described with the antenna of the third embodiment, and the receiving antenna 61B will be described with the antenna of the fourth embodiment, all of which are the first, second, third and fourth embodiments. Any of the above antennas may be used.

The wireless transmission unit 71 has at least a modulating means for modulating a radio wave received by the common antenna 61A, an amplifying means for amplifying the received radio wave, and a transmitting means for transmitting the received radio wave. 71. Thus, the planar radiation type antenna 61 (61A,
61B) and a radio transmission unit 71, and the radio transmission unit 71 modulates the received radio wave received by the common antenna 61A by UHF (or VHF)
The signal is amplified by the amplifying means, and is transmitted wirelessly to the receiving antenna 61B of the house which has been damaged by the transmitting means. As a result, the TV can be viewed with a beautiful image even in the surrounding radio interference area such as the shadow of a building or a mountain. In addition, according to the system for transmitting and receiving TV radio waves in an area where radio waves are obstructed, there is no need to install a plurality of antennas in the direction of the TV station unlike a conventional Yagi-type antenna. Because of this, maintenance is easy.

Secondly, FIG. 11 shows an example of a system for transmitting and receiving TV radio waves for an apartment house. in this way,
The flat radiation antenna according to the third embodiment is arranged as a common antenna (parent antenna) 61A on the attic Y of a house, and the small planar radiation antenna 61 is received on a TV in each room of the house. Antenna (child antenna) 61B
And a wireless transmission unit 71 having at least a transmitting means for transmitting the received radio wave is disposed on the back Y of the ceiling. Further, the common antenna 61A is arranged on the attic Y in a planar state. When the antenna is pointed in the direction of the common antenna 61A, a high-quality image can be wirelessly received from any room in the house.

Third, FIGS. 12 and 13 show an example of a system for transmitting and receiving TV radio waves in an underground premises or a common building BL. As described above, the planar radiation type antenna according to the third embodiment is arranged as a common antenna (parent antenna) 61A on the roof of the common building BL, and is used in the underground yard or the common building B.
The coaxial cable 15 is led into each room of L, and a transmitting device 75 as transmitting means is disposed in the underground premises, the ceiling of each room of the common building BL, and the like. Then, the planar radiation antenna 61 is arranged as a receiving antenna (child antenna) 61B on the underground premises or on the TV in each room of the common building BL, and if the antenna is directed toward the transmitting device 75, the inside of the underground premises or High-quality images can be received in each room of the common building BL.

As described above, the transmission / reception system according to the present embodiment has been described in the case of a common building, a house behind the common building, and surrounding houses. Also, it can be applied as a transmission / reception system outdoors. In the description of the transmitting and receiving system of the present embodiment, the example of the wireless transmitting and receiving system using the planar radiation type antenna of the present invention has been described. However, the transmitting and receiving system of the present embodiment is applied as a wired transmitting and receiving system. It goes without saying that you can also do things.

[0051]

According to the planar radiating antenna of the first aspect, since the planar radiating antenna is employed and the surface area of the frame is large, the HF band or the FM
Band radio waves can be received efficiently and effectively. Also, there is no need to install a plurality of antennas in the direction of the television station as in the conventional Yagi-type antenna.

According to the planar radiating antenna of the fourth or fifth aspect, the planar radiating antenna is in the form of a planar radiating antenna, and the frame or sash has a complicated cross section of the frame and a small surface area. Since it is easy to select the efficiency of directivity, it is possible to receive radio waves in the HF and FM bands efficiently and effectively, and it is possible to increase the size without any inconvenience. Condominiums such as condominiums are installed on the top floor and are suitable for joint reception.Either way, they can withstand wind and snow damage and can be used for a long time, and are economical and highly profitable. Furthermore, there are excellent effects such as excellent aesthetics without impairing the beauty of the scenery, and safety in the installation work.

According to the planar radiation type antenna of the sixth aspect, the antenna has the form of a planar radiation antenna, and is connected to a plurality of frames by a plurality of left and right vertical sides and a plurality of upper and lower horizontal sides. Therefore, even if the surface area is small, the reception area is large, so that the radio waves in the HF and FM bands can be efficiently and effectively received. Further, since the front and back insulating plates are provided, it is possible to efficiently and effectively receive radio waves in the HF and FM bands from both the front and back surfaces. In addition, since it is economical, has high gain, and can be made small in postcard size, it can be used as a picture frame on a TV or furniture, and used without affecting the aesthetics of the room. Has an excellent effect.

Further, according to the transmission / reception system using the planar radiation type antenna according to claim 7, the reception radio wave received by the common antenna is transmitted to a plurality of reception radio waves arranged in the radio wave interference area via the radio transmission unit. Radio waves can be transmitted to the antenna of the TV, so that a beautiful image of the TV can be viewed even in an area where radio waves are obstructed, such as behind a building or a mountain, or in an underground mall or underground yard. Further, unlike the conventional Yagi-type antenna, there is no need to install a plurality of antennas in the direction of the TV station, and a low-cost wiring structure is sufficient, and maintenance is easy because the structure is simple.

[0055]

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a planar radiation antenna according to a first embodiment of the present invention having a frame.

FIG. 2 is a partially cutaway front view of a planar radiation type antenna according to a second embodiment in which the present invention uses a sash as a sash.

FIG. 3 is a sectional perspective view of a middle crosspiece according to the other embodiment.

FIG. 4 is a perspective view of a planar radiation antenna according to a third embodiment of the present invention.

FIG. 5 is a cross-sectional view showing the structure of left and right vertical frames and upper and lower horizontal frames according to the third embodiment.

FIG. 6 is a front view illustrating the position of a resonance axis and a feeding point according to the third embodiment.

FIG. 7 is a partially cutaway perspective view of a planar radiation type antenna according to a fourth embodiment of the present invention.

FIG. 8 is a perspective view showing a planar radiation antenna according to the fourth embodiment.

FIG. 9 is a plan view showing a configuration of a conductive material according to the fourth embodiment.

FIG. 10 is a wiring diagram showing an example of a transmission / reception system using the planar radiation type antenna of the present invention.

FIG. 11 is a wiring diagram showing an example in which a transmission / reception system using a planar radiation type antenna according to the present invention is applied to a house.

FIG. 12 is a wiring diagram showing an example in which a transmission / reception system using a planar radiation antenna according to the present invention is applied to an underground premises.

FIG. 13 is a wiring diagram showing an example in which a transmission / reception system using a planar radiation type antenna according to the present invention is applied to a common building.

[Explanation of symbols]

F frame, Shoji as S sash, 2,52 vertical frame, 3,53 horizontal frame, 4, plate glass, 5 back plate, 7 works, 99A, 9B feeding point, 11 resonance axis,
13 Feeder, 54 Reflector, 61 Planar radiation antenna, 61A Joint antenna, 61B Receiving antenna 62 Front insulating plate, 63 Back insulating plate, 64 Conductive material, 65a, 62b, 65c Side, 66
a, 66b, 66c Plural upper and lower horizontal sides, 67 resonance axis, 71, wireless transmission unit, 75 transmitting means, TV
TV set

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[Procedure amendment]

[Submission date] March 6, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

Patent application title: Planar radiation antenna and transmission / reception system using this antenna

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to HF (hereinafter referred to as "HF" in the present specification)
Also used. The present invention relates to a planar radiation antenna as a surface radiation antenna capable of receiving radio waves in the band and the FM band, and a transmission / reception system using the antenna.

[0002]

2. Description of the Related Art A surface radiation antenna has a receiving element formed of a conductive material in a rectangular frame shape. The ratio of the long side to the short side is 2: 1 to 3: 1 and both sides are long. It has been found that in the case where a feeding point is provided at about one quarter from one end in the unit frame, it can be used efficiently and effectively not only for reception as a resonance type but also for transmission.

[0003] The feature of this type of antenna is that it has a large effective aperture area and is efficient, and that when used alone, a practical sensitivity equivalent to 5 to 10 elements of a Yagi-type antenna can be obtained. Or on the roof, or on the outer (or inner) wall.

[0004]

As described above, according to the conventional Yagi-type antenna, the antenna can be mounted only on the roof or the roof of a building, which not only impairs the beauty of the scenery. In addition, there is a problem that the durability is poor, such as the pillars are damaged by the snow and snow, and the main body is corroded by salt damage, and the mounting work is performed at a high place with poor scaffolding, which causes a risk.

[0005] Regarding the reception efficiency, as the surface area increases, the reception efficiency increases and the sensitivity improves. However, conventionally, an aluminum pipe or a strip material is used for the element. Since it becomes large and heavy, the installation requires not only the strength of the pillar but also the strength of the foundation, so that there is a problem that the cost is high.

Further, conventional antennas use large-sized antennas such as Yagi-type and dipole-type antennas.
It is mainly limited to outdoor use, and because of its high directivity, it is necessary to install a plurality of UHF and VHF antennas facing the television station. Also, conventional antennas
Due to the large size, the mounting place is limited, so that it cannot be used indoors, underground premises, and the like. As described above, the conventional antenna requires a plurality of antennas because of its high directivity, and its use range is extremely narrow.

On the other hand, the conventional antenna has a problem that a TV is not clearly displayed in a radio interference area where a building or a mountain is shaded. To solve this problem, a large antenna is installed on the roof of a building or the like. Stand up, and receive the radio wave received by this large antenna with a cable and attach the terminal to the house and each room of the building that is behind the building with a cable, or
A solution has been made by converting to a cable television (CATV).

However, since the conventional antenna uses a large-sized antenna, its use range is extremely narrow. Further, the use of a cable television (CATV) or the like is not possible with telephone poles, cables, and boosters (amplifiers). There is a problem that enormous cost is required for wiring work such as the above.

The present invention has been made in view of the circumstances described above,
Offers a flat radiation antenna that can be installed easily and stably without any inconveniences that harm the landscape, can take up a large receiving area even with a small size, makes installation work safe, and can be provided at low cost. The purpose is to do.
In addition, the present invention can be applied to an HF band or an FM
It is an object of the present invention to provide a planar radiation antenna capable of efficiently transmitting and receiving radio waves in a band. further,
An object of the present invention is to provide a wireless transmission / reception system using the above-mentioned planar radiation type antenna.

[0010]

In order to solve the above-mentioned problems, the invention of a flat radiating antenna according to the first aspect of the present invention is directed to a square-shaped frame formed by left and right vertical frames and upper and lower horizontal frames made of extruded aluminum members, respectively. With the rectangular frame to be used as the antenna body, a feeder is provided on the left and right vertical frames so as to face each other, and a feed point is provided on the distal end side of the feeder. It is configured to bend and bend in the direction so as to take a large cross-sectional area.

According to the first aspect of the invention, the radio wave resonated at the center of the opposed resonance shaft is guided to the feeding point. According to the first aspect of the present invention, since the antenna has the form of a surface radiation antenna and the cross section of the frame is complicated and the surface area is large, the HF band or the F
Radio waves in the M band can be efficiently and effectively received. That is, the receiving area can be increased even with a small size, and there is no need to install a plurality of antennas at an accurate angle as in the conventional Yagi antenna.

The planar radiation type antenna according to the second aspect of the present invention is characterized in that a rectangular frame which is formed into a rectangular frame by left and right vertical frames and upper and lower horizontal frames made of extruded aluminum material is used as an antenna main body. Inside, in the frame of the type that stores the glass plate and the back plate that sandwiches the work and the poster, the power supply material is provided facing the back side of the back plate of the above-mentioned frame, and the power supply point is provided on the tip side of this power supply material,
Each cross-sectional shape of the left and right vertical frame and the upper and lower horizontal frame has a substantially U-shape and is bent to accommodate the work, the glass plate, and the back plate, and further bent inwardly in close proximity to the bending. The configuration is such that the cross-sectional area is large.

[0013] Further, the invention of the planar radiation type antenna according to claim 3 is an aluminum-made frame framed by a left and right vertical frame and an upper and lower horizontal frame, such as a plate glass to be housed in a window of a building and a shoji to be housed in a window frame. In the sash, a feeder is provided facing the left and right vertical frames with the framework as an antenna main body, and a feed point is provided on a tip side of the feeder. It was configured to be bent inward and bent to have a large cross-sectional area.

According to the second or third aspect of the present invention, since the planar radiation type antenna is configured as described above, each of them takes the form of a planar radiation antenna.
Moreover, since the frame has a complicated cross section and a large surface area as a frame or sash structure, the HF band or the FM
Band radio waves can be received efficiently and effectively, and because they are also used as fittings and furniture necessary for housing the building, they are economically inexpensive.

In addition, the installation of the planar radiating antenna according to the second or third aspect follows the mounting as a picture frame or a sash, so that there is no danger in the installation work and the reception efficiency is improved. The location of the antenna can be selected, and the function of the planar radiation antenna is directivity in all directions (approximately 360 degrees), so that it can be used in any building and the selection is easy.

According to a fourth aspect of the present invention, there is provided a transmission / reception system using the planar radiation type antenna, wherein the planar radiation type antenna according to any one of the first to third aspects is replaced by a common antenna capable of transmitting and receiving radio waves; Arranged as any one of a plurality of receiving antennas for receiving radio waves from the common antenna, and transmitting radio waves to a radio interference area wirelessly through a radio transmission unit having a transmitting means for transmitting at least the received radio waves. It is characterized by transmitting.

According to the fourth aspect of the present invention, the reception radio wave received by the common antenna is transmitted wirelessly to a plurality of reception antennas located in the radio wave interference area via the radio transmission unit. Therefore, the TV can be viewed on the screen in a beautiful image even in an area where radio waves are obstructed by a shadow of a building or a mountain. That is, since the planar radiation type antenna having the above configuration is a small antenna having a wide band in the HF band and the FM band and weak directivity, the antennas can be used mutually to shade buildings and mountains. Thus, it is possible to provide a transmission / reception system that allows a TV (television) to be viewed with a beautiful image even in a radio interference area.

For example, in a place where a high-quality radio wave can be received, such as the roof of a building, a common antenna may be used as a parent antenna in the shadow of a building. The above-mentioned receiving antenna for receiving the radio wave from the common antenna is arranged as a child antenna on the roof or the like of each house in the radio interference area. The radio transmitting unit modulates the received radio wave received by the common antenna to UHF (or VHF) by the modulating means, amplifies it by the amplifying means, and receives the signal from the transmitting antenna in a house which is obstructed by the transmitting means. Can be sent wirelessly. With such a wireless transmission / reception system, a TV can be viewed on a clear screen even in an electromagnetic interference area where a building or a mountain is shaded (including the surrounding area).

The planar radiation type antenna according to any one of claims 1 to 3 is provided with a common antenna at a place where a high quality radio wave can be received, for example, on the roof of a building. On the other hand, the reception antenna for receiving radio waves from the common antenna is connected to the basement of the building or each room of the common building. In this case, it is preferable that the receiving antennas are arranged on the ceiling, the back of the ceiling, the wall surface, or the like, but the antennas may be placed vertically or in a flat state. Then, in the basement of the building or in each room of the common building, transmitting means arranged in each radio interference area via a cable connected to the common antenna are arranged. Also, an amplifying unit and a distribution unit for amplifying the received radio wave received by the common antenna are arranged in the common antenna, and the received radio wave is distributed after being received. In this way, by receiving the radio waves emitted by the transmitting means via the receiving antenna, the TV can be viewed with beautiful images even in the basement premises or each room of the common building.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 shows a planar radiation type antenna showing an example of an embodiment in a frame F.
This planar radiation type antenna is framed by left and right vertical frames 2 and 2 and upper and lower horizontal frames 3 and 3 as a frame F, and the frame forms an antenna body (receiving element), in which a plate glass 4 and a back plate 5 are provided. And the work 7 is sandwiched between them.

Feeding points 9, 9 are provided on the left and right vertical frames 2, 2.
The resonance shafts (feed members) 11 and 11 are attached to the left and right vertical frames 2 and 2 on the back side of the frame F so as to face each other. And the coaxial cable 15 is pulled out from the power supply 13. Unlike this embodiment, the power supply 13 may be screwed to the back plate 5 and connected to the power supply points 9 and 9 therefrom.

Each of the frames 2 and 3 has a dovetail groove 17 which is opened on the back side for the frame, and has an L-shaped connecting plate 19 therein.
Is inserted into the dovetail groove 17 so that a notch 21 into which the end of the resonance shaft 11 fits is provided on the inner side wall of the dovetail groove 17. The end is screwed to the bottom wall of the dovetail groove 17.

In order to stop the back plate 5, a nut 23 is inserted into the dovetail groove 17, and a pushing screw 25 that penetrates the bottom wall of the dovetail groove 17 is screwed into the nut 23. In the picture frame, there are various ways of stopping this. For example, a leaf spring is interposed between the projecting portion where the dovetail groove 17 is formed and the back plate 5, or the leaf spring is hooked on the dovetail groove 17. Means may be taken to press the back plate 5 at its end. Since the position of such a back plate holder can be freely selected, if it is used as the resonance shafts (feed members) 11, 11, the feed point can be adjusted freely.

(Second Embodiment) FIG. 2 shows an example of an embodiment in which a sliding screen S of an aluminum sash for windows is used. In this case, the left and right vertical frames 2 and 2 as rigid frames are also used. The upper and lower horizontal frames 3 and 3 as the upper and lower frames form a rectangular frame, into which the plate glass 35 is fitted via a rubber tight material. Was provided, and the power supply 13 was attached to the indoor side of the plate glass 35. In this embodiment, the left and right vertical frames 2 and 2 are similar to the aluminum sash for windows.
Each of the upper and lower horizontal frames 3 and 3 has a bent structure so that the cross-sectional area is complicated and large.

A thin copper strip (aluminum sheet or copper wire may be used) is used for the resonance axes (feed members) 11, 11, which are embedded in the sheet glass 35.
May be fitted doubly and disposed between them. In the case of the shoji screen S, the coaxial cable 15 accompanies the opening / closing operation. However, when the window frame is implemented, the fixed stability is maintained. In particular, when the sheet glass is a window frame of a fitting window fitted in the window frame, the coaxial cable is disposed better. Further, the embedding window can be implemented in the same manner as the shoji S as described above. The resonance axis (feeding material) 1
The positions of the power supply points 1 and 11 and the power supply points 9 and 9 can be provided at positions similar to those in a third embodiment described later (see FIG. 6).

In the shoji screen S of the above embodiment, one sheet glass 35 is fitted. However, a shoji screen in which a middle crosspiece is installed between the upper and lower horizontal frames 3 and 3 and two upper and lower glass sheets are fitted is often used. FIG. 3 shows the resonance axis 11, 1
1 and the case where the power feeding body 13 is configured.

The middle rail 37 generally has left and right side walls 39, 3
9 has upper and lower horizontal walls 41, 41, and a hollow 43 therebetween.
In addition, upper and lower ends are dovetail grooves 45, 45 into which a plate glass is fitted. Therefore, the middle rail 37 is divided into left and right resonance shafts 11 and 11, and both are connected by the power supply body 13 (case) having substantially the same cross-sectional shape. The case is made of plastic, and has connection pieces 42, 42 fitted on the hollows 43, 43 of the resonance shafts 11, 11 at both ends for connection.

(Third Embodiment) FIG. 4 shows a third embodiment, which is a planar radiation antenna mounted on an attic, a roof, or an outer wall. Left and right vertical frame 5 made of conductive material
2, 52 and upper and lower horizontal frames 53, 53 form a rectangular frame, and the rectangular frame forms an antenna body (receiving element). In order to provide the feeding points 9, 9 on the left and right vertical frames 52, 52, resonance shafts 51, 51 are attached inside the left and right vertical frames 52, 52 so as to face each other. Are provided with the above-mentioned feeding points 9 and 9,
The coaxial cable 15 is drawn out of the power supply 13 from the power supply 13. The conductive material of the present embodiment is made of an extruded aluminum material, but may be made of another metal such as brass, a copper plate, or brass. In addition, unlike the first and second embodiments, the present embodiment is a frame-shaped planar antenna on which no decorative element is applied, but is similar to the first and second embodiments. It is also possible to apply to the frame F and the sash S made of aluminum.

In the present embodiment, the left and right vertical frames 52, 52 are provided with parallel reflecting plates 54, 54, respectively. The reflecting plates 54, 54 are aluminum plate-like members provided on both outer sides of the left and right vertical frames 52, 52. The reflectors 54, 54 are provided at the central member 5 thereof.
4a is screwed and fixed to the resonance shafts 51, 51. In addition, an insulator is interposed between the connecting portions of the reflection plates 54, 54 and the left and right vertical frames 52, 52. Thus, by providing the reflection plates 54, 54, the sensitivity becomes better than that in which the reflection plates 54, 54 are not provided.

In this embodiment, as in the second embodiment, the left and right vertical frames 2 and 2 and the upper and lower horizontal frames 3 and 3 are bent so as to have a complicated and large cross-sectional area. It is preferable that the structure be provided. That is, as shown in FIG. 5, if the left and right vertical frames 2 and 2 and the upper and lower horizontal frames 3 and 3 have a complicatedly bent structure in which the cross-sectional shape is bent inward, the reception efficiency is improved.

In the present embodiment, as shown in FIG. 6, the resonance shaft (feeding material) is provided at a position L3 which is か ら to １ ／ of the length L1 of the left and right vertical frames 52, 52. 5
1, 51 are provided facing each other, and feed points 9, 9 are provided. That is, the left and right vertical frames 52,
52 from the position L2 which is 1/2 (1/2) of the length L1
/ 5 (one-fifth) position L3, the resonance axis 5
1, 51 are provided corresponding to the operating frequency, and feed points 9, 9 are provided at the positions of the resonance shafts 51, 51 of the left and right vertical frames 52, 52, and the resonance shafts 51, 51 and the feed points 9, 9 are provided. Are configured to be the same. By providing the resonance shafts 51 and 51 and the feeding points 9 and 9 at such positions, the radio waves resonated at the center of the opposed resonance shafts 51 and 51 can be guided to the feeding points 9 and 9. The impedance can be adjusted according to the frequency, and the antenna can be used as a planar radiation antenna having a high gain. The positions of the resonance axes (feed members) 11 and 11 and the feed points 9 and 9 in the first and second embodiments are provided at similar positions.

In this embodiment, the ratio of the length of the left and right vertical frames 52, 52 to the length of the upper and lower horizontal frames 53, 53 is appropriately changed according to the wavelength of the UHF band and the VHF band. I do.

(Fourth Embodiment) FIGS. 7 and 8 show an embodiment in which a picture frame F and a panel are implemented. The inside of a wooden picture frame F is interposed through a glass plate of the picture frame F.
A thin planar radiation antenna 61 is housed. The planar radiation type antenna 61 includes a rectangular front insulating plate 62, a rear insulating plate 63, and a conductive material 64 interposed between the rectangular insulating plates 62, 63. . The planar radiation type antenna 61 of the present embodiment includes:
It is a small postcard size (about 10 cm wide, about 15 cm long, about 3 mm thick) placed on a table,
By connecting four of these small planar radiation antennas 61,
It can also be used as A4 size paper. In the frame F and the panel, a sheet 68 on which pictures, characters, and the like are drawn is stored inside the glass plate.

The conductive material 64 is a flat material having a thickness of about 1.5 cm to 3 mm. As shown in FIGS. 8 and 9, a plurality of left and right vertical sides 65a, 65b, 65c. A plurality of upper and lower horizontal sides 66a, 66b, 66c,... Are mutually connected in a plurality of frame shapes, and an antenna main body (receiving element) is formed by this connection state. In this embodiment mode, the aluminum, brass or copper plate is formed by pressing (punching). However, the forming method is not limited to this, and the conductive member is formed by a processing method of an electronic substrate or the like. May be something.

The left and right vertical sides 65a, 65b, 65c
The upper and lower horizontal sides 66a, 66b, 66c are connected in a frame shape by three conductive members 64, respectively.
Resonant shafts (feed portions) 67, 67 are provided at substantially the center in the inward direction of a, 65b, 65c. Although the left and right vertical sides 65a, 65b, 65c and the upper and lower horizontal sides 66a, 66b, 66c of the present embodiment have been described as three, two or more of them may be provided. As described above, the plurality of left and right vertical sides 65a, 65b, 65c and the plurality of upper and lower horizontal sides 66a, 66b, 66c are connected in a plurality of frame shapes.
Even if the surface area of the rectangular insulating plate 62 on the front side and the insulating plate 63 on the back side are small, the transmitting and receiving area can be increased. Also, the left and right vertical sides 65a, 65b, 65c and the upper and lower horizontal sides 6
The frame-like connection state of 6a, 66b, and 66c is not limited to the one shown in FIG. 9, but is included in the present invention as long as a plurality of rectangular (frame-like) shapes are formed. That is, in FIG. 9, the outer sides 65a, 65b, 66a, 66b of the plurality of left and right vertical sides 65a, 65b, 65c and the plurality of upper and lower horizontal sides 66a, 66b, 66c are referred to as "composite element". , The innermost sides 65c, 66c may be referred to as "matching portions", and the opposite side of the resonance shafts 67, 67 may be referred to as "resonance point 69".
5a, 65b, 66a, 66b and matching portions 65c, 66
The shape of c and the resonance shafts 67, 67 can be configured to be planar, linear, square, cylindrical, or the like.

The coaxial cable 15 is drawn from the resonance shafts 67, 67 to provide the feeding points 9A, 9A. In the present embodiment, the left and right vertical sides 65a, 65
b, 65c, the resonance axes 67, 67 and the feeding point 9
A and 9A are provided and the coaxial cable 15 is drawn out, but the feeding points 9 are provided at the lower side portions 66a, 66b and 66c.
A and 9A may be provided and pulled out from the coaxial cable 15. Further, the insulating plate 64 on the front side and the insulating plate 65 on the back side sandwiching the rectangular conductive material 64 are only required to be an insulating material such as glass, but are formed of plastic or epoxy resin material in the present embodiment. . Also in the present embodiment, the positions of the resonance axes (feed members) 67 and 67 and the feed points 9 and 9 can be provided in the same positions as in a third embodiment described later ( See FIG. 6). In addition,
In the present embodiment, since the frame F is configured to be able to accommodate the planar radiation antenna 61 as a separate member using a normal frame or panel, the frame F can be accommodated and used in panels of various shapes. It is.

With respect to the installation of the planar radiation antenna 61, as a function of the planar radiation antenna, the antenna has directivity in almost all directions (approximately 360 degrees), but it is also possible to install a plurality of antennas. For example, if two planar radiation antennas 61 are arranged at an angle of 90 degrees and connected to a receiving system, transmission and reception can be performed from all directions. Such installation is particularly effective when installed on a moving body such as an automobile, a ship, and a train. Such a plurality of arrangements are also effective for the planar radiation antennas of the first, second, and third embodiments.

(Configuration of Transmitting / Receiving System) Next, the installation of the antenna 61 according to the above-described embodiment will be described with reference to the planar radiating antenna according to the first, second, and third embodiments, the parent antenna or the child antenna. It is also possible to install as a sword. In this case, for example, the first, second, and third
The flat radiation antenna of the fourth embodiment is installed on an attic or the like, while the flat radiation antenna 61 of the fourth embodiment is installed on a television (TV) or the like, and is directed toward the parent antenna. . With such an installation, it is possible to efficiently and effectively transmit and receive radio waves in the HF or FM band without lengthening the wiring or recognizing the installation location of the antenna indoors. Note that, contrary to the above configuration, the planar radiation antennas of the first, second, and third embodiments are used as child antennas, and the planar radiation antenna 61 of the fourth embodiment is used.
Can be installed as a parent antenna.

Therefore, a specific transmission / reception system using the planar radiation type antenna of each of the above embodiments will be described below. First, FIG. 10 shows an example of a system for transmitting and receiving TV radio waves in a radio interference area. As described above, the common antenna 61A is used as a parent antenna in a place where high-quality radio waves can be received, such as the rooftop of the building BL, and the common antenna 61A is used as a roof of each house in a radio interference area behind the building. Antenna 6 for receiving radio waves from
1B is arranged as a child antenna. A wireless transmission unit 71 that wirelessly transmits a radio wave to a receiving antenna 61B disposed in a radio wave interference area is connected to the common antenna 61A via a coaxial cable 15. 10 to 13, the common antenna 61 is used.
A will be described with the antenna of the third embodiment, and the receiving antenna 61B will be described with the antenna of the fourth embodiment, all of which are the first, second, third and fourth embodiments. Any of the above antennas may be used.

The radio transmitting unit 71 has at least a modulating means for modulating a radio wave received by the common antenna 61A, an amplifying means for amplifying the received radio wave, and a transmitting means for transmitting the received radio wave. 71. Thus, the planar radiation type antenna 61 (61A,
61B) and a radio transmission unit 71, and the radio transmission unit 71 modulates the received radio wave received by the common antenna 61A by UHF (or VHF)
The signal is amplified by the amplifying means, and is transmitted wirelessly to the receiving antenna 61B of the house which has been damaged by the transmitting means. As a result, the TV can be viewed with a beautiful image even in the surrounding radio interference area such as the shadow of a building or a mountain. In addition, according to the system for transmitting and receiving TV radio waves in an area where radio waves are obstructed, there is no need to install a plurality of antennas in the direction of the TV station unlike a conventional Yagi-type antenna. Because of this, maintenance is easy.

Secondly, FIG. 11 shows an example of a system for transmitting and receiving TV radio waves for an apartment house. in this way,
The flat radiation antenna according to the third embodiment is arranged as a common antenna (parent antenna) 61A on the attic Y of a house, and the small planar radiation antenna 61 is received on a TV in each room of the house. Antenna (child antenna) 61B
And a wireless transmission unit 71 having at least a transmitting means for transmitting the received radio wave is disposed on the back Y of the ceiling. Further, the common antenna 61A is arranged on the attic Y in a planar state. When the antenna is pointed in the direction of the common antenna 61A, a high-quality image can be wirelessly received from any room in the house.

Third, FIGS. 12 and 13 show an example of a system for transmitting and receiving TV radio waves in an underground premises or a common building BL. As described above, the planar radiation type antenna according to the third embodiment is arranged as a common antenna (parent antenna) 61A on the roof of the common building BL, and is used in the underground yard or the common building B.
The coaxial cable 15 is led into each room of L, and a transmitting device 75 as transmitting means is disposed in the underground premises, the ceiling of each room of the common building BL, and the like. Then, the planar radiation antenna 61 is arranged as a receiving antenna (child antenna) 61B on the underground premises or on the TV in each room of the common building BL, and if the antenna is directed toward the transmitting device 75, the inside of the underground premises or High-quality images can be received in each room of the common building BL.

As described above, the transmission / reception system according to the present embodiment has been described in the case of a common building, a house behind the common building, and surrounding houses. Also, it can be applied as a transmission / reception system outdoors. In the description of the transmitting and receiving system of the present embodiment, the example of the wireless transmitting and receiving system using the planar radiation type antenna of the present invention has been described. However, the transmitting and receiving system of the present embodiment is applied as a wired transmitting and receiving system. It goes without saying that you can also do things.

[0045]

According to the planar radiation type antenna of the first aspect, since the planar radiation type antenna is employed, the cross section of the frame is complicated and the surface area is large, so that the HF band and the FM Band radio waves can be received efficiently and effectively, and the receiving area can be increased even with a small size.

According to the planar radiating antenna of the second or third aspect, the planar radiating antenna takes the form of a planar radiating antenna, and the frame or the sash has a complicated cross section of the frame and a small surface area. Since it is easy to select the efficiency of directivity, it is possible to receive radio waves in the HF and FM bands efficiently and effectively, and it is possible to increase the size without any inconvenience. Condominiums such as condominiums are installed on the top floor and are suitable for joint reception.Either way, they can withstand wind and snow damage and can be used for a long time, and are economical and highly profitable. Furthermore, there are excellent effects such as excellent aesthetics without impairing the beauty of the scenery, and safety in the installation work.

Further, according to the transmission / reception system using the planar radiation type antenna according to the fourth aspect, the reception radio wave received by the common antenna is transmitted to the plurality of reception radio waves arranged in the radio interference area via the radio transmission unit. Radio waves can be transmitted to the antenna of the TV, so that a beautiful image of the TV can be viewed even in an area where radio waves are obstructed, such as behind a building or a mountain, or in an underground mall or underground yard. Further, unlike the conventional Yagi-type antenna, there is no need to install a plurality of antennas in the direction of the TV station, and a low-cost wiring structure is sufficient, and maintenance is easy because the structure is simple.

[0048]

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a planar radiation antenna according to a first embodiment of the present invention having a frame.

FIG. 2 is a partially cutaway front view of a planar radiation type antenna according to a second embodiment in which the present invention uses a sash as a sash.

FIG. 3 is a sectional perspective view of a middle crosspiece according to the other embodiment.

FIG. 4 is a perspective view of a planar radiation antenna according to a third embodiment of the present invention.

FIG. 5 is a cross-sectional view showing the structure of left and right vertical frames and upper and lower horizontal frames according to the third embodiment.

FIG. 6 is a front view illustrating the position of a resonance axis and a feeding point according to the third embodiment.

FIG. 7 is a partially cutaway perspective view of a planar radiation type antenna according to a fourth embodiment of the present invention.

FIG. 8 is a perspective view showing a planar radiation antenna according to the fourth embodiment.

FIG. 9 is a plan view showing a configuration of a conductive material according to the fourth embodiment.

FIG. 10 is a wiring diagram showing an example of a transmission / reception system using the planar radiation type antenna of the present invention.

FIG. 11 is a wiring diagram showing an example in which a transmission / reception system using a planar radiation type antenna according to the present invention is applied to a house.

FIG. 12 is a wiring diagram showing an example in which a transmission / reception system using a planar radiation antenna according to the present invention is applied to an underground premises.

FIG. 13 is a wiring diagram showing an example in which a transmission / reception system using a planar radiation type antenna according to the present invention is applied to a common building.

[Description of Signs] F picture frame, Sash as S sash, 2,52 vertical frame, 3,53 horizontal frame, 4, plate glass, 5 back plate, 7 works, 99A, 9B feeding point, 11 resonance axis,
13 Feeder, 54 Reflector, 61 Planar radiation antenna, 61A Joint antenna, 61B Receiving antenna 62 Front insulating plate, 63 Back insulating plate, 64 Conductive material, 65a, 62b, 65c Side, 66
a, 66b, 66c Plural upper and lower horizontal sides, 67 resonance axis, 71, wireless transmission unit, 75 transmitting means, TV
TV set

Claims (7)

[Claims] 1. A rectangular frame formed by a left and right vertical frame and an upper and lower horizontal frame made of a conductive material, respectively, is provided as a main body of an antenna, and resonance axes are provided opposite to the left and right vertical frames. A planar radiation type antenna, characterized in that a feed point is provided on the tip side of the antenna. 2. The planar radiation antenna according to claim 1, wherein a reflector is provided on each of the left and right vertical frames. 3. The planar radiation antenna according to claim 1, wherein a resonance axis is provided at a position between one half and one fifth of the length of the left and right vertical frames. 4. A frame which is framed by left and right vertical frames and upper and lower horizontal frames, each of which is made of extruded aluminum material, and in which the frame and the back plate sandwiching a work or a poster are placed in the frame, the frame is connected to an antenna. A planar radiation type antenna, wherein a resonance axis is provided on a back plate as a main body, and a feeding point is provided on a tip side of the resonance axis. 5. An aluminum sash framed by left and right vertical frames and upper and lower horizontal frames, such as a window frame to be accommodated in a window of a building or a shoji to be accommodated in a window frame. A planar radiation type antenna, wherein a resonance axis is provided to face a frame, and a feed point is provided on a tip side of the resonance axis. 6. An antenna body made of a conductive material connected in a plurality of rectangular frames by a plurality of left and right vertical sides and a plurality of upper and lower horizontal sides, and a resonance axis opposed to the inside of the left and right vertical sides. A flat surface, wherein a feed point is provided on the tip side or the lower horizontal side of the resonance shaft, and a front insulating plate and a rear insulating plate sandwiching the frame-shaped conductive material are provided. Radiation antenna. 7. A common antenna capable of transmitting and receiving a radio wave, and a plurality of reception units for receiving a radio wave from the common antenna, comprising the planar radiation type antenna according to any one of claims 1 to 6. And place it as one of the antennas for
A transmission / reception system using a planar radiation type antenna, wherein a radio wave is transmitted to a radio wave interference area wirelessly via a radio transmission unit having a transmission means for transmitting at least a received radio wave.