JPH069214U - A device that surrounds a capacitive plate with a ground line in a coupling antenna - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To improve the usage efficiency of coupling type antennas. [Structure] The capacitance plate 1 is surrounded by an earth line 7 at regular intervals. The earth line 7 may be double or triple. [Effect] With this, the transmission loss can be significantly reduced.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for surrounding a capacitance plate with an earth line in a coupling type antenna.

[0002]

[Prior art]

 There is a technology called “coupling type antenna” that arranges two capacitance plates on both sides of glass or the like and performs high frequency electric transmission. There are two types of capacitance plates, one pole type and two pole type. This is a proposal in this field, and the conventional one improves the transmission loss because it is large.

[0003]

[Problems to be solved by the device]

 The present invention aims to provide a new device in this field with low transmission loss.

[0004]

[Means for solving problems]

 The present invention relates to a device for surrounding a capacitance plate with an earth line in the above-mentioned coupling type antenna in which a certain distance is provided in the coupling type antenna or the ground lines are double or tripled.

[0005]

[Action]

 Operationally speaking, the present invention is based on the idea that the high frequency power hitting the earth line escapes the surface and hits the earth line and returns to improve the efficiency of the antenna.

[0006]

【Example】

 FIG. 3 shows a conventional capacitance plate 1. These two things are used by sandwiching glass in the middle. FIG. 4 shows a state of use, 2 is a coupling device, 3 is a coupling section, and 4 is a coaxial cable that goes to a transceiver. Further, 5 is an antenna, and the diagonal line of 6 shows glass. The conventional example is used in such a state.

Next, the present invention will be described in comparison with this. As shown in FIG. 1, the capacitance plate is surrounded by an earth line 7. A copper or iron plate or the like is used for this earth line. Then, due to the earth line located outside the capacitance plate, high frequencies have the property of transmitting on the surface even in glass, and the high frequency power radiated to this surface returns to the capacitance plate, enabling more efficient transmission. .

Further, as a variation, it can be used in a form as shown in FIGS. 5 and 6, and numeral 8 indicates an earth side capacitance plate. As another variation, the earth line may be doubled or tripled. FIG. 7 and FIG. 8 show the usage state when added during transmission.

[0009]

[Effect of device]

 According to the present invention, the transmission loss can be remarkably reduced, and by mounting this device at the base of the antenna, an efficient antenna can be realized without making a hole in glass or the like. In addition, the efficiency of use is improved by attaching this device during transmission.

[Brief description of drawings]

FIG. 1 is a front view of a capacity plate of the present invention.

FIG. 2 is a perspective view showing a usage state as an antenna.

FIG. 3 is a front view of a conventional capacity plate.

FIG. 4 is a perspective view showing a usage state thereof.

FIG. 5 is a front view of one modified example.

FIG. 6 is a perspective view showing a usage state of the antenna.

7 is a perspective view corresponding to FIG. 2, showing a state of use added during transmission.

FIG. 8 is a perspective view corresponding to FIG. 6 and showing a state of use added during transmission.

[Explanation of symbols]

 1 Capacitance plate 2 Coupling device 3 Coupling part 4 Coaxial cable 5 Antenna 6 Glass 7 Earth line 8 Earth side capacity plate

Claims (2)

[Scope of utility model registration request] 1. A coupling type antenna in which a capacitance plate is surrounded by a ground line at regular intervals. 2. The coupling type antenna according to claim 1, wherein the earth line is double or tripled, and a device surrounding the capacitance plate by the earth line.