JPH052432U - Antenna device - Google Patents

Abstract

(57) [Summary] [Object] To provide an antenna device capable of reducing the number of parts and reducing the processing cost and the assembly cost. [Structure] The radiating portion, the reflecting portion and the frame are integrally formed of glass fiber reinforced plastic, and a metal reflecting plate 6 is attached to a portion corresponding to the reflecting portion. Since the radiation part and the reflector 6 are integrally molded, the radio wave from the radiator is not leaked from the skimmer, and is shaped into a predetermined beam width by the metal reflector 6 and radiated in the forward direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention also relates to improvement of an antenna device used in a base station for mobile radio or the like. Of.

[0002]

[Prior art]

  FIG. 3 is an external view showing a conventional antenna device. In the figure, 1 is a print substrate The radiating element etched on the board is protected by a urethane board, and the surrounding area is a dielectric. , A radiating part covered with a dome laminated with glass fiber reinforced polyester resin, 2 Is an aluminum reflection part, 3 is an aluminum angle for fixing the radiation part 1 and the reflection part 2 -Shaped frame, 4 is fixed to the radiation part 1 and the frame 3, as well as the reflection part 2 and the frame It is a screw for fixing 3.

[0003]   The antenna device is configured as described above, and the reflection part 2 is arranged with respect to the radiation part 1. , The reflector 2 and the plate are bent so that the required angle and position can be maintained electrically. The shooting part 1 is fixed to the frame 3, and mechanically, the mechanical stress On the other hand, each member is fixed with the screw 4 so as to have a strength not to be destroyed.

[0004]

[Problems to be solved by the device]

  In the conventional antenna device as described above, the reflector 2 forms a predetermined beam width. As described above, the plate bending process is performed so that the radiator 1 has a predetermined angle. Reflection The machining of the part 2 requires a long time for obtaining a predetermined angle tolerance, and the machining cost There was a problem that was high. In addition, the radiator 1, the reflector 2 and the frame 3 are assembled. , It is necessary to fix with screws 4, and there are many fixing points, so the assembly cost There was also the problem of being expensive.

[0005]   Further, in the conventional antenna device, as described above, the radiation section 1 and the reflection section 2 are Since it is fixed to the screw 4 via the frame 3, the joint between the radiating portion 1 and the frame 3 As shown in Fig. 3 and the external view of Fig. 3, radio waves leak from the gap between the radiation part 1 and the reflection part 2. , There was a problem of deteriorating the electrical performance

[0006]   This invention was made in order to solve the above-mentioned problems. Which enables improvement of manufacturing cost, reduction of the number of parts, and reduction of processing cost and assembly cost. The purpose is to obtain a device.

[0007]

[Means for Solving the Problems]

  In the antenna device according to the present invention, the structure of the radiation part, the reflection part, and the frame is removed. Integrally molded with fiber reinforced plastic, and a metal reflector at the location corresponding to the reflector Is attached.

[0008]   In addition, this device is used when molding glass fiber reinforced plastic instead of a metal reflector. An aluminum coat mat is laminated on the portion corresponding to the reflection part.

[0009]

[Action]

  In this invention, the radiation part, the reflection part and the frame are made of glass fiber reinforced plastic. Since the frame is unnecessary by integrally molding with a rack, the number of parts can be reduced. It is possible to reduce the processing cost and the assembly cost.

[0010]   In addition, since the radiation part, the reflection part and the frame are integrally molded, there is no leakage of radio waves. In addition, electrical performance can be improved.

[0011]

【Example】

    Example 1.   FIG. 1 is a view showing an embodiment of the present invention, and 1 is the same as that of FIG. 5 Is a structure for holding the radiating unit 1, and 6 is a predetermined wave for the radio wave radiated from the radiating unit 1. It is a metal reflector having a function of reflecting the beam so as to have a beam width.

[0012]   In the antenna device configured as described above, the radio wave radiated from the radiation unit 1 Since the radiation part 1 and the metal reflection plate 6 are integrally formed, the There is no wave leakage, and the metal reflector 6 shapes the beam to a predetermined beam width, and it efficiently moves forward. Is emitted.

[0013]     Example 2.   FIG. 2 is a view showing an embodiment of the present invention, and 1.5 is the same as that of FIG. . 7 is an aluminum-coated mat that is laminated when molding glass fiber reinforced plastic , Has a function as a reflection surface.

[0014]   In the antenna device configured as described above, as in the case of FIG. Since the Lumicoat mat reflector 7 is integrally molded, radio waves from leaks etc. The radio wave radiated from the radiation unit 1 is predetermined by the aluminum coat mat reflector 7 It is shaped into a beam width of and is radiated forward efficiently.

[0015]   Furthermore, when molding glass fiber reinforced plastic, the aluminum coated mat reflector 7 By changing the stacking angle, unlike the metal reflector plate 6 in FIG. 1, electrical performance is improved. The beam width can be easily changed without deterioration.

[0016]

[Effect of device]

  As described above, according to the present invention, since the radiator and the reflector are integrally formed, It is possible to obtain a high-performance antenna device without leakage of radio waves from the gap.

[0017]   Also, because it is integrally molded, the number of parts can be reduced and the processing and assembly costs can be reduced. It will be possible.

[Brief description of drawings]

FIG. 1 is an external view showing an embodiment of the present invention.

FIG. 2 is an outline view showing another embodiment of the present invention.

FIG. 3 is an external view showing a conventional antenna device.

[Explanation of symbols]

1 Radiator 2 Reflector 3 frames 4 screws 5 structure 6 Metal reflector 7 Aluminum coated mat reflector

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Creator Takano Furuno             325 Kamimachiya, Kamakura City Mitsubishi Electric Corporation             Kamakura Factory

Claims (2)

[Scope of utility model registration request] 1. An antenna device comprising: a radiator for transmitting and receiving radio waves; a reflector for forming a predetermined beam width; and a frame for fixing the radiator and the reflector, wherein the frame, the radiator, and An antenna device characterized in that the structure of the reflection part is integrally formed of glass fiber reinforced plastic, and a flat metal reflection plate is attached to the surface of the reflection part. 2. An antenna device comprising: a radiator for transmitting and receiving radio waves; a reflector for forming a predetermined beam width; and a frame for fixing the radiator and the reflector, wherein the frame, the radiator, and An antenna device characterized in that the structure of the reflection part is integrally formed of glass fiber reinforced plastic, and an aluminum coat mat is laminated on the reflection part.