JPH04134910A - Antenna system - Google Patents

Abstract

PURPOSE:To always attain sure communication at any relative angle of an antenna system by providing plural transmission/reception plane antennas not in parallel with each other to a contactless automatic ticket examining device. CONSTITUTION:Plural transmission/reception plane antennas are arranged not in parallel with each other to one or both of a master set and a slave set. For example, a plane antenna 7 formed by winding a conductor in spiral is provided on the vertical plane 6a of a board 6 folded at a right angle and a plane antenna 8 having similar structure is provided also on its horizontal plane 6b. When the above-mentioned antenna system is integrated in the communication equipment of a wicket device main body and communication with an IC card is implemented, even in the case the plane antenna of the IC card has any relative angle with respect to the communication equipment, sure communication is attained. Thus, the user customer does not care about the relative angle of the IC card with respect to the communication equipment and the limit in the utilization such as consideration of an event of disable communication in a specific direction is relaxed.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to an antenna device suitable for application to, for example, a non-contact automatic ticket gate.

``Prior art'' In recent years, IC cards that can send and receive data wirelessly to and from the ticket gate are used as commuter passes, coupon tickets, etc. in various transportation facilities, and these IC cards are used in the ticket gate installed at the hot spring gate. A contactless automatic ticket gate has been developed that allows you to judge whether or not you can pass by simply by approaching the door. In this type of automatic ticket gate, electric power is transmitted and data is sent and received using radio waves, so as shown in Fig. 4, a planar antenna 2 formed by winding a conducting wire in a spiral shape is attached to the communication device l of the ticket gate main body. A similar planar antenna 4 is also provided inside the IC card 3.

"Problem to be solved by the invention" By the way, in the above-mentioned non-contact automatic ticket gate device,
An unspecified number of passengers carry the IC card 3, and these passengers transfer the IC card 3 to the communication device 1 of the ticket gate.
, it is assumed that the planar antenna 4 of the IC card 3 approaches the planar antenna 2 of the communication device 1 at any angle, so communication can always be performed reliably regardless of the relative angle. required to be able to do so. However, when transmitting and receiving data using the planar antennas 2 and 4 described above, the planar antennas 2 and 4
Improvements have been desired since the communication range varies depending on the relative angle. In other words, when the frequency of radio waves used for communication is below IMHz, when the flat antenna 4 of the IC card 3 is parallel to the flat antenna 2, as shown in FIG. Therefore, a uniform communication range A is obtained, and if the IC card 3 is brought close to the planar antenna 2, communication is always possible. Conversely, as shown in FIG.
When A is vertical, the communicable range A is 2
Even if the IC card 3 is divided and spread laterally and the IC card 3 is brought closer to the planar antenna 2, communication may become impossible, especially at the center of the planar antenna 2. As described above, there is a restriction in usage that if the IC card 3 is oriented in a specific direction, it must be used with consideration to the possibility that communication will be impossible.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide an antenna device that can always achieve reliable communication regardless of the relative angle.

``Means for Solving the Problems'' This invention provides a plurality of planar transmitting and receiving antennas arranged so as not to be parallel to each other on one or both of a base unit and a slave unit that transmit and receive data wirelessly. It is characterized by

"Operation" According to the above configuration, since a plurality of planar transmitting and receiving antennas that are not parallel to each other are provided, even when a specific combination of planar antennas on the slave unit and the base unit are perpendicular to each other, other It is not geometrically perpendicular to the planar antenna, which can widen the communication range.

"Embodiments" Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing the configuration of a first embodiment of the present invention.

In this figure, reference numeral 6 denotes a board bent at right angles, and a planar antenna 7 formed by winding a conducting wire in a spiral shape is provided on the vertical surface 6a of this board 6, and its horizontal surface 6b
A similar planar antenna 8 is also provided.

When such an antenna device is incorporated into the communication device 1 of the ticket gate main body shown in FIG. 4 and communicates with the IC card 3, for example, as shown in FIG. When it becomes perpendicular to , it becomes parallel to the other planar antenna 8 . Therefore, the planar antenna 8 provides a relatively wide communication range A shown in FIG.
Due to this, the communication range A expanded laterally as shown in Fig. 6,
is obtained, and these communicable ranges A, and A are combined,
A wider communication range A is secured. As a result, for example, when a customer brings the IC card 3 close to the communication device 1 of the ticket gate main body, the planar antenna 4 of the IC card 3 can reliably communicate regardless of the relative angle to the communication device 1. can do. As a result, the customer does not have to worry about the relative angle of the IC card 3 with respect to the communication device 1, and unlike in the past, customers do not have to worry about the situation where communication becomes impossible if the IC card 3 is oriented in a specific direction. Restrictions will be eased.

Next, FIG. 3 is a diagram showing the configuration of a second embodiment of the present invention. In this embodiment, conductive wires are wound in a spiral shape on each of the mutually orthogonal surfaces 16a, 16b, 16c of the substrate 16. Each antenna is provided with a rotating planar antenna of 7°8.9°. In such a configuration 1, the communicable range can be expanded three-dimensionally.

In addition, in the embodiment described above, the planar antennas 6 to 9
The explanation was given using the example of arranging them at right angles to each other, but they do not necessarily need to be arranged at right angles;
It doesn't matter what angle you place it. Furthermore, a plurality of planar transmitting and receiving antennas that are not parallel to each other may be provided on the IC card 3 side, or may be provided on both the IC card 3 and the communication device 1 of the ticket gate main body. Further, although the description has been given using an example of application to a non-contact automatic ticket gate, it is of course possible to apply the present invention to an unmanned transportation system that exchanges data between an unmanned guided vehicle and a ground station. Furthermore, in the above-described embodiments, the form of the handset for data communication is an IC card, but the form is not limited to this, and various forms such as a cubic rod shape, a rod shape, a disc shape, a button shape, etc. may also be used.

"Effects of the Invention" As explained above, according to the present invention, a plurality of transmitting/receiving planar antennas that are not parallel to each other are provided, so that the combination of specific planar antennas of the slave unit and the parent unit is in a positional relationship perpendicular to each other. In some cases, it is not geometrically perpendicular to other planar antennas, which increases the communication range and therefore ensures reliable communication at all times, whatever the relative angle. The effect is that it is possible to realize the following.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the configuration of a first embodiment of the present invention, FIG. 2 is a diagram showing a communication range according to the same embodiment, and FIG. 3 is a perspective view showing the configuration of a second embodiment of the invention. , FIG. 4 is a perspective view showing the configuration of a conventional non-contact type automatic ticket gate, and FIGS. 5 and 6 are diagrams showing a communication range by the automatic ticket gate. 6.16...Substrate, 7.8.9...Planar antenna.

Claims (1)

[Claims] 1. An antenna device characterized in that a plurality of flat antennas for transmitting and receiving are arranged in one or both of a base unit and a slave unit that transmit and receive data wirelessly so as not to be parallel to each other.