JP2001339225A - Connecting device for plane antenna - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting device for a plane antenna which never affects the fitting space of a portable telephone set without deteriorating characteristics of the antenna. SOLUTION: Since a plane antenna 4, a coaxial connector 3, a feed terminal 5 and a switch terminal 6 are mounted on a printed wiring board integrally with an insulating housing, switching between the plane antenna and another coaxial line becomes possible by using irreducible transmission lines and the characteristics of the antenna is free of gradation. Further, even when the plane antenna is connected to a coaxial plug 13 by engagement, it is electrically connected to an earth shell 11 connected to a ground pattern 8 and grounded, and the circuit pattern on a printed wiring board is not used to connect the coaxial connector and a changeover switch to each other, so the mounting density of the printed wiring board is improved without having any adverse effect on signal characteristics.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat antenna connection device for switching between a feed line of a flat antenna and another transmission line, and more particularly, to a feeder circuit for a portable telephone, which includes an internal flat antenna and an external antenna. The present invention relates to a flat antenna connection device for switching to such a feed line.

[0002]

2. Description of the Related Art A planar antenna has an inverted F due to its side shape.
It is called a shaped antenna. This planar antenna 81
As shown in FIG. 8, a metal plate having a power supply terminal 84 connected to a power supply line (not shown) and a short-circuit terminal 83 connected to a ground plane 82 is provided. A power supply point which is a connection position of the power supply terminal 84 and a short circuit point which is a connection position of the short circuit terminal 83 are designed and arranged in parallel to the ground plane 82.

[0003] The flat antenna 81 can be matched as a 1/8 wavelength antenna in the vicinity of 900 MHz, which is the band used by mobile phones.
It can be as long as. Therefore, as shown in FIG. 9, the mobile phone 85 is attached to the inside of the mobile phone 85 so as to be along the side surface of the miniaturized mobile phone 85.
5 dedicated antenna.

On the other hand, in a vehicle such as an automobile, a portable telephone 8
Since it is difficult to transmit and receive using only the planar antenna 81 when using the antenna 5, it is desired to switch the power supply circuit of the mobile phone 85 to an external in-vehicle antenna installed outside the vehicle.

[0005] For this reason, a coaxial connector 88 that is fitted and connected to a coaxial plug 87 that is connected to a feed line of an in-vehicle antenna is provided on an end face of the mobile phone 85. The mobile phone 85 includes an internal power supply circuit, an in-vehicle antenna via the coaxial connector 88, and a built-in planar antenna 8.
A changeover switch is provided for selectively switching to any one of (1) and (2).

FIG. 10 is a circuit diagram in which a changeover switch 90 is provided. The common terminal of the changeover switch 90 is connected to the power supply circuit 97 of the portable telephone, one switch terminal 91 is connected to the power supply terminal 84 of the flat antenna 81, and The other switching terminal 92 is connected to a signal terminal 96 from an external vehicle-mounted antenna 95. Thus, the connection between the planar antenna 81 and the vehicle-mounted antenna 95 is switched.

[0007]

In the above conventional switching structure, the connection with the planar antenna 81 and the connection with the coaxial connector 88 fitted to the coaxial plug 87 are completely different from each other. The structure to do was not considered. Therefore, the switching by the changeover switch 90 is also performed by connecting the power supply terminal 84 of the planar antenna 81 to the power supply pattern of the printed wiring board once.
The signal line of the coaxial connector 88 connected to one of the switching terminals 91 and the in-vehicle antenna 95 is also connected to the switching switch 9 via a coaxial line, a signal pattern on a printed wiring board, or the like.
It is necessary to connect to the other switching terminal 92 of 0.

[0008] For this reason, the mounting efficiency of a printed wiring board, which is arranged in a device such as a portable telephone, for which miniaturization is desired and requires a high mounting density, has been reduced.

Further, in order to connect the signal line of the coaxial connector 88 to the changeover switch 90, it is necessary to pass through a signal pattern on a printed wiring board, so that noise may intrude or unnecessary L and C components may be generated. And the antenna characteristics deteriorated.

Further, since the coaxial connector 88 needs to be mounted at a position avoiding the flat antenna 81 and at a position as close as possible to the flat antenna 81, the mounting position in the device is limited to an end surface such as a flat surface or a bottom surface of the housing. Constrained,
Further, the space for mounting the changeover switch itself must be secured in a narrow housing.

The present invention has been made in consideration of the above-mentioned conventional problems. The present invention improves the mounting density of a printed circuit board, does not deteriorate the characteristics of an antenna, and provides a space for mounting a portable telephone. It is an object of the present invention to provide a connection device for a planar antenna which does not affect the connection.

[0012]

According to a first aspect of the present invention, there is provided a connecting device for a planar antenna, wherein a power supply pattern connected to a power supply circuit and a ground pattern separated from the power supply pattern are formed by printing. A printed wiring board, an earth shell that is fitted and connected to the earth contact of the coaxial plug, is urged in a fitting direction of the coaxial plug, and when the coaxial plug is fitted, it is insulated from at least the earth shell to form a coaxial plug. A coaxial connector having a movable terminal that resiliently contacts the center contact and retreats in the ground shell, and vertically supports the coaxial connector on the printed wiring board,
By connecting the ground shell to the ground pattern and mounting the insulating housing mounted on the printed wiring board, the power supply terminal attached to the insulating housing at a predetermined distance from the coaxial connector, and inserting the coaxial connector,
A planar antenna made of a metal flat plate arranged in parallel with the ground pattern of the printed wiring board and having a short-circuit point at a contact portion that contacts the ground shell of the coaxial connector, a feeding point at a contact portion that contacts the power supply terminal, and a power supply pattern A switch terminal that is supported by the insulating housing so as to be connected to the power supply terminal, always elastically contacts the power supply terminal, and when the coaxial plug is fitted, the movable terminal that retreats and abuts away from the power supply terminal;
It is characterized by having.

According to the present invention, the planar antenna is connected to the ground pattern arranged in parallel via the earth shell at a short-circuit point that comes into contact with the earth shell. When the coaxial plug is not connected, the switch terminal connected to the power supply pattern makes elastic contact with the power supply terminal. Therefore, the planar antenna is connected to the switch terminal and the power supply pattern at the power supply point in contact with the power supply terminal. Acts as a planar antenna connected to

On the other hand, when the coaxial plug is fitted to the ground shell of the coaxial connector, the ground contact of the coaxial plug is connected to the ground pattern via the ground shell. On the other hand, the center contact of the coaxial plug elastically contacts the movable terminal urged in the fitting direction, and retreats the movable terminal. The retractable movable terminal further contacts the switch terminal, electrically connects to the switch terminal, and separates the switch terminal from the power supply terminal. Therefore, the center contact is connected to the power supply pattern via the movable terminal and the switch terminal, and the transmission line of the coaxial plug is connected to the power supply circuit. Further, since the metal flat plate that has been a planar antenna is insulated from the switch terminal, it simply becomes a ground plate connected to the ground pattern via the ground shell, and does not function as an antenna.

[0015] By this, only by fitting and connecting the coaxial plug, the planar antenna is disconnected from the connection with the power supply circuit, and the center contact of the coaxial plug is connected to the power supply circuit via the switch terminal, so that the connection can be switched. Done.

According to a second aspect of the present invention, in the connecting device for a planar antenna, the power supply terminal is formed of a leaf spring that elastically contacts the rear surface of the planar antenna with the coaxial connector inserted through the planar antenna. I do.

By simply inserting the coaxial connector into the planar antenna, a connection structure in which the power supply terminal elastically contacts the planar antenna can be formed, so that the assembly is facilitated. Further, since the coaxial connector and the power supply terminal are respectively supported by the insulating housing, the positions of the power supply point and the short-circuit point of the planar antenna do not vary due to assembly, and the planar antenna matching the power supply pattern can be mass-produced.

Further, since the power supply terminal makes elastic contact with the rear surface of the planar antenna, even if the planar antenna is deformed or bent, it absorbs these and maintains the contact state, so that reliable electric connection is maintained. it can.

According to a third aspect of the present invention, in the connection device for a planar antenna, the power supply pattern is connected to a power supply circuit of a portable telephone, and the center contact of the coaxial plug is connected to an external antenna.

The power supply circuit of the portable telephone can be easily switched from a planar antenna to an external antenna as required, and a changeover switch for switching the antenna and a coaxial connector for connecting to the external antenna are provided on a plane. It can be formed as a single piece integral with the configuration for connecting the antenna.

Further, since the coaxial connector is provided on the mounting surface of the planar antenna, the mounting space for the coaxial connector can be easily secured in a portable telephone whose mounting space is restricted.

[0022]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is an exploded perspective view showing a connection device 1 for a planar antenna according to the present invention, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 5, and FIG. FIG. 4 is a sectional view taken along line AA of FIG. 5 showing a state when the plug is fitted, FIG. 4 is a front view of the connection device 1 for a planar antenna, FIG. 5 is the same plan view, FIG.
6 is a sectional view taken along line BB and a sectional view taken along line CC in FIG. 5, respectively.

The connection device 1 for a planar antenna according to this embodiment includes a printed wiring board 2, a coaxial connector 3, a planar antenna 4, a power supply terminal 5, a switch terminal 6, and an insulating housing 7. .

As shown in FIG. 1, a ground pattern 8 and a power supply pattern 9 are formed on the surface of the printed circuit board 2 by insulated from each other. The power supply pattern 9 corresponds to a power supply circuit 1 built in a mobile phone (not shown).
0, and the ground pattern 8 is grounded (see FIGS. 2 and 3).

The coaxial connector 3 has an earth shell 11 and a movable terminal 12, and is attached to an insulating housing 7 described later in a state of standing on the printed wiring board 2 to be mounted.

The earth shell 11 is formed of a conductive metal in a cylindrical shape, and has an upper portion serving as a connection port 11a for externally fitting and connecting to a cylindrical earth contact of the coaxial plug 13. A stopper wall 11c having a through hole 11b at the center is formed below the connection port 11a so as to cross. The lower part of the stopper wall 11c is
1d, and a spring 14 to be described later is arranged in the hollow portion 11d.

A flange ring 11e is formed on the outer surface of the earth shell 11 so as to be in contact with the lower surface of the flat antenna 4 to be described later and to support the flat antenna 4 in a state of contact with the flat antenna 4. The ground shell 11 is electrically connected to the ground pattern 8 of the printed wiring board 2 via a ground terminal 16 described later.

The movable terminal 12 is a cylindrical earth shell 1.
The contact portion 12a, the stopper portion 12b, and the shaft portion 12c are formed in a substantially shaft shape in which the contact portion 12a, the stopper portion 12b, and the shaft portion 12c are sequentially provided from top to bottom. Contact part 12a
Project through the through hole 11b of the earth shell 11 and into the connection port 11a. When the coaxial plug 13 is fitted into the connection port 11a, the contact portion 12a comes into contact with the center contact of the plug 13.

The stopper portion 12b has a conical shape, and the tapered surface thereof is formed in the stopper wall portion 1 of the earth shell 11.
It comes into contact with the receiving tapered surface 1c. The movable terminal 12 is prevented from coming off from the earth shell 11 by this contact. A spring 14 housed in the hollow portion 11d in a compressed state abuts on the lower surface of the stopper portion 12b, and this abutment causes the entire movable terminal 12 to move upward in the fitting direction with the coaxial plug 13. It is urged to move to.

The shaft portion 12c of the movable terminal 12 extends through the spring 14 by extending into the hollow portion 11d of the earth shell 11. The spring 14 is connected to the movable terminal 1 as described above.
2 is urged in the direction of fitting with the coaxial plug 13, and in this embodiment, a coil spring is used. The spring 14 is inserted into the guide tube 15, and is set inside the hollow portion 11d by inserting the guide tube 15 into the hollow portion 11d of the earth shell 11 from below. A hole 15a is formed in the bottom surface of the guide tube 15 to allow the shaft portion 12c of the movable terminal 12 to pass therethrough.

As shown in FIG. 1, the planar antenna 4 is formed by a metal flat plate. The planar antenna 4 has an insertion hole 4a through which the connection port 11a of the earth shell 11 is inserted. The insertion hole 4a is provided in the earth shell 1
1 is formed so as to have the same diameter as the outer diameter of the first connection port 11a.
It contacts the outer surface of 1a. In addition, the connection port 1 to the insertion hole 4a
With the insertion of 1a, the flange ring 11e on the outer surface of the earth shell 11 comes into contact with the lower surface of the planar antenna 4. These contacts bring the planar antenna 4 into conduction with the earth shell 11.

Further, by inserting the connection port 11a of the earth shell 11 into the insertion hole 4a,
Are mounted on a coaxial connector 3 that stands upright on the printed wiring board 2 and are arranged in parallel with the printed wiring board 2.

The power supply terminal 5 includes a support piece 5a and a support 5
and a slender strip-shaped contact piece portion 5b that rises obliquely upward from a and has a rising end portion folded back in a curved shape.
It is formed by pressing a conductive metal plate into one piece. The power supply terminal 5 configured as described above includes a support piece 5
“a” is bridged between the coaxial connector 3 and the recessed bottom surface of the insulating housing 7 at a predetermined distance from the coaxial connector 3, and is supported by the insulating housing 7. In a state where the support piece 5a is attached to the insulating housing 7, the contact piece 5b provided with elasticity as a leaf spring makes elastic contact with the back side of the planar antenna 4 attached to the coaxial connector 3, and It is electrically connected to the antenna 4.

As shown in FIG. 2 and FIG.
Is attached to the lower part of the insulating housing 7. The switch terminal 6 includes a power supply connection portion 6a extending in the horizontal direction,
After rising from the power supply connection portion 6a at a right angle, it is formed in a substantially crank shape in which an operation portion 6b bent in a right angle in the horizontal direction is continuously provided, and the tip of the operation portion 6b faces upward. The curved convex contact portion 6c is integrally formed.

The power supply connection portion 6a of the switch terminal 6 and a portion which rises at a right angle from the power supply connection portion 6a are fixed to the inner side surface of a concave groove 7b opening on the bottom side of the insulating housing 7, and the power supply connection portion 6a It is arranged along the bottom surface of the insulating housing 7. The cantilevered working portion 6b has a groove 7
It extends so as to pass below the movable terminal 12 along the line b, and elasticity is provided so that the contact convex portion 6c at the tip thereof is urged upward.

The contact convex portion 6c is provided on the support piece 5 of the power supply terminal 5.
Since it is arranged on the lower surface of a, when no external force is applied,
The switch piece 6 and the power supply terminal 5 are electrically connected to each other by elastic contact with the support piece 5a.

Further, as will be described later, the movable terminal 12
When the movable terminal 12 is retracted by being pushed down by the coaxial plug 13, the lower end of the movable terminal 12 comes into contact with the action portion 6 b, and the entire switch terminal 6 comes into contact with the movable terminal 12 and the power supply terminal 5.
Elastically deform away from

As described above, the insulating housing 7 mounts and supports the coaxial connector 3, the power supply terminal 5, and the switch terminal 6. The insulating housing 7 is formed in a substantially rectangular parallelepiped block body, and the coaxial connector 3 is mounted upright on a portion deviated to one side from the center portion, and a contact piece portion 5b is mounted on a portion deviated on the other side. The power supply terminal 5 is attached so that the power supply terminal 5 projects upward. Also,
A through hole 7 a is formed in the bottom surface of the insulating housing 7 to allow the movable terminal 12 to pass therethrough and to come into contact with the switch terminal 6.

Coaxial connector 3 in insulating housing 7
Are set up around the ground terminals 1 and 2.
6 are arranged. That is, as shown in FIG. 5, a frame 17 having three sides of a quadrilateral is fitted into the insulating housing 7 around the coaxial connector 3 and the ground terminal 16 is provided.
Are formed integrally with the frame 17 by extending upward from each of the three sides of the frame 17. The upper end portion of each ground terminal 16 is bent back in the direction of the earth shell 11, whereby the ground terminal 16 contacts the earth shell 11.

Each side of the frame 17 has a ground contact portion 17a reaching a position flush with the bottom surface of the insulating housing 7.
The ground contact portion 17a, which is provided on one side, is bifurcated so as to straddle the power supply connection portion 6a of the switch terminal 6 (see FIG. 1).

When the insulating housing 7 to which the coaxial connector 3, the power supply terminal 5, and the switch terminal 6 are mounted is mounted on the surface of the printed wiring board 2 as shown in FIG. Are soldered to the ground pattern 8 of the printed wiring board 2 and are electrically connected. The grounding shell 11 includes the ground terminal 16 and the frame 1.
7 and is electrically connected to the ground pattern 8 of the printed wiring board 2. In addition, the power supply connection portion 6a of the switch terminal 6
Are arranged on the power supply pattern 9 of the printed wiring board 2 and are electrically connected to the power supply pattern 9 by soldering.

As shown in FIG. 3, the coaxial plug 13 which can be arbitrarily connected to the planar antenna connection device 1 according to the present embodiment, that is, the coaxial plug 13 which is fitted and connected to the coaxial connector 3, has a center contact. 13a and the ground contact 13c are formed coaxially and insulated by the insulator 13b. Here, it is assumed that the coaxial plug 13 is connected to an external in-vehicle antenna (not shown) via a coaxial cable (not shown).

The connection switching operation of the connection device 1 for a planar antenna having the above configuration will be described with reference to FIGS. When the coaxial plug 13 is not connected, as shown in FIG. 2, the movable terminal 12 advances upward by the bias of the spring 14. For this reason, the switch terminal 6 has the elasticity of the action portion 6 b, the tip contact convex portion 6 c makes elastic contact with the support piece 5 a of the power supply terminal 5, and the contact piece 5 b of the power supply terminal 5 that comes into contact with the planar antenna 4 is formed. , Is connected to the power supply pattern 9.

On the other hand, the earth shell 11 of the coaxial connector 3 in contact with the planar antenna 4 by the flange ring 11e.
Is connected to the ground pattern 8 of the printed wiring board 2 via the ground terminal 16, and the planar antenna 4 is arranged in parallel with the ground pattern 8 that is grounded.

Therefore, the planar antenna 4 is configured such that the contact portion of the feed terminal 5 with the contact piece 5b is connected to the feed point and the ground shell 11
The contact portion with the flange ring 11e serves as a short-circuit point and acts as an antenna connected to the feed circuit 10.

On the other hand, as shown in FIG. 3, when the coaxial plug 13 is fitted into the connection port 11a of the earth shell 11 in order to connect the external in-vehicle antenna to the feed circuit 10, the center contact 13a of the coaxial plug 13 Contacts the movable terminal 12 and pushes down the same. Therefore, the movable terminal 12 retreats from the connection port 11a against the spring 14 and moves downward. By this retreating movement, the movable terminal 12 comes into contact with the action portion 6b of the switch terminal 6 and pushes down the action portion 6b, and the contact convex portion 6c of the switch terminal 6 separates from the support piece portion 5a of the power supply terminal 5. Accordingly, the switch terminal 6 connected to the power supply pattern 9 is disconnected from the power supply terminal 5 and electrically connected to the center contact 13 a of the coaxial plug 13 via the movable terminal 12. The ground contact 13c of the coaxial plug 13 is connected to the ground pattern 8 of the printed wiring board 2 by being fitted and connected to the ground shell 11 of the coaxial connector 3 and grounded.

As a result, the connection with the power supply circuit 10 is switched to the coaxial plug 13. In a state where the connection is switched to the coaxial plug 13 side, the feeder terminal 5 and the earth shell 11 are connected to the planar antenna 4. However, since the power supply terminal 5 is insulated from the switch terminal 6 and the ground shell 11 is grounded via the ground terminal 16 and the ground pattern 8 of the printed wiring board 2, the entire planar antenna 4 is simply The grounded metal plate is provided around the coaxial connector 3. Therefore, when switching to the coaxial plug 13 side, the planar antenna 4 does not act as an antenna, and does not adversely affect the signal characteristics of the coaxial plug 13 side.

When the coaxial plug 13 is pulled out from the coaxial connector 3, the connection device 1 returns to the state shown in FIG. 2 by the return spring action of the spring 14 and the switch terminal 6, and the movable terminal 12 is connected to the power supply terminal 5 again. Thus, the planar antenna 4 functions as an antenna connected to the power supply circuit 10.

In the above-described embodiment, the switch terminal 6 for switching the antenna, the coaxial connector 3 for connecting the coaxial plug 13, and the power supply terminal 5 for supplying power to the planar antenna 4 are provided.
Is an insulating housing 7 mounted on the printed wiring board 2.
, Noise may enter and unnecessary L
No component or C component is generated, and the characteristics of the antenna are not deteriorated.

Further, since it is not necessary to print another pattern on the printed wiring board 2 in order to connect the changeover switch to the planar antenna and the coaxial connector, the mounting density of the printed wiring board 2 is improved.

Further, by using the earth shell of the coaxial connector 3 connected to the coaxial plug 13 to form a short-circuit point of the planar antenna 4, the connection configuration of the planar antenna 4 and the connection configuration with the coaxial plug 13 are made single. Since the connection device is unitized, the overall size can be reduced, the mounting space of the mobile phone or the like is not affected, and the degree of freedom in designing the mobile phone is expanded.

Further, in this embodiment, the power supply terminal 5
Is elastically in contact with the planar antenna 2 and is electrically connected to the planar antenna 2, so that even if the planar antenna 2 is deformed or bent, it can absorb these and maintain the contact state. Connection can be made and stable connection can be made.

The present invention can be variously modified without being limited to the above embodiments. For example, earth shell 1
1 and the ground pattern 8 of the printed wiring board 2 may be connected via other connecting parts, or they may be directly connected by soldering or the like.

Further, the insulation between the earth shell 11 and the movable terminal 12 is only required if the movable terminal 12 is insulated from the earth shell 11 at least when the coaxial plug 13 is fitted. Fig. 2
As shown in FIG. In this case, the movable terminal 12 needs to be separated from the switch terminal 6 by the action of the spring 14. On the other hand, when the movable terminal 12 and the earth shell 11 are not always connected by an insulating spacer or the like, the movable terminal 12 may be always in contact with the switch terminal 6.

The connection between the power supply terminal 5 and the planar antenna 2 may be made by soldering other than elastic contact or other means.

[0056]

【The invention's effect】

According to the first aspect of the present invention, a planar antenna,
Since the coaxial connector, the power supply terminal and the switch terminal are each arranged integrally with the insulating housing and mounted on the printed wiring board, switching between the planar antenna and other coaxial lines can be performed using a minimum transmission line. , Noise and unnecessary L component and C component do not occur,
The characteristics of the antenna do not deteriorate.

Also, the flat antenna is electrically connected to the ground shell connected to the ground pattern and grounded even when the flat antenna is fitted and connected to the coaxial plug, so that the flat antenna does not function as an antenna and adversely affects signal characteristics. It will not be given.

Further, since the circuit pattern on the printed wiring board is not used for connecting the coaxial connector and the changeover switch for antenna switching, the mounting density of the printed wiring board is improved.

According to the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, since the feeding terminal makes elastic contact with the flat antenna, the flat antenna can be connected to the feeding terminal by being attached to the coaxial connector. The assembly work is simplified.

Even if the planar antenna is deformed or bent, it is absorbed and maintained in a contact state, so that the electric connection can be reliably performed.

According to the third aspect of the present invention, the coaxial connector to be connected to the coaxial plug can be provided within the mounting surface of the planar antenna. Connectors can be attached.

Further, since the connection structure between the coaxial connector and the planar antenna is housed in a single component, the size of the mobile phone can be reduced.

[0064]

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a planar antenna connection device 1 according to the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 5, showing a state where the planar antenna is always connected to the feed circuit.

FIG. 3A shows a state when the coaxial plug is fitted.
It is -A sectional drawing.

FIG. 4 is a front view of the connection device 1 for a planar antenna.

FIG. 5 is a plan view of the same.

FIG. 6 is a sectional view taken along line BB of FIG. 5;

FIG. 7 is a sectional view taken along line CC of FIG. 5;

FIG. 8 is a perspective view showing a connection structure of a conventional planar antenna.

FIG. 9 is a partially cutaway perspective view showing application to a mobile phone.

FIG. 10 is a circuit diagram for switching an antenna connection.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connecting device of planar antenna 2 Printed wiring board 3 Coaxial connector 4 Planar antenna 5 Feeding terminal 6 Switch terminal 7 Insulating housing 8 Ground pattern 9 Feeding pattern 10 Feeding circuit 11 Earth shell 12 Movable terminal 13 Coaxial plug 13a Center contact 13c Earth contact

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) H01R 4/48 H01R 4/48 C 13/71 13/71 24/02 H01Q 13/08 // H01Q 13 / 08 H01R 103: 00 H01R 103: 00 17/04 K501G F-term (reference) 5E021 FA03 FB02 FB11 FB15 FC19 FC23 FC31 FC33 FC34 MA22 MA25 MA31 5J021 AA02 AB02 AB06 CA06 DB04 FA31 GA08 HA05 HA10 5J045 AA05 AB05 AB02 DA08 EA07 FA08 MA04 NA03 5J046 AA03 AA07 AB00 PA07 TA05 TA07 5J047 AA01 AA09 AB06 AB13 FD01

Claims (3)

[Claims] A printed wiring board (2) on which a power supply pattern (9) connected to a power supply circuit (10) and a ground pattern (8) separated from the power supply pattern (9) are formed by printing, and a coaxial plug. An earth shell (11) fitted and connected to an earth contact (13c) of (13), and a coaxial plug (1).
When the coaxial plug (13) is fitted, it is insulated from at least the earth shell (11) and elastically contacts the center contact (13a) of the coaxial plug (13). A coaxial connector (3) having a movable terminal (12) retreating in an earth shell (11); a coaxial connector (3) vertically supported on a printed wiring board (2); (8) an insulating housing (7) connected to the printed wiring board (2) and mounted on the printed wiring board (2); and a power supply terminal (5) mounted on the insulating housing (7) at a predetermined distance from the coaxial connector (3). By inserting the coaxial connector (3), the coaxial connector (3) is made of a metal plate arranged in parallel with the ground pattern (8) of the printed wiring board (2). A planar antenna (4) having a contact point in contact with 1) as a short-circuit point, a contact point in contact with the power supply terminal (5) as a power supply point, and an insulating housing (7) connected to a power supply pattern (9). It is supported and normally elastically contacts the power supply terminal (5), and when the coaxial plug (13) is fitted, the retractable movable terminal (12) comes into contact with and separates from the power supply terminal (5). 6) A connection device for a planar antenna, comprising: 2. The power supply terminal (5) is a coaxial connector (3).
2. The flat antenna connecting device according to claim 1, wherein the flat antenna is made of a leaf spring elastically contacting the rear surface of the flat antenna when the flat antenna is inserted through the flat antenna. 3. The power supply pattern (9) is connected to a power supply circuit (10) of a mobile phone, and the center contact (13a) of the coaxial plug (13) is connected to an external antenna. Item 3. The connection device for a planar antenna according to any one of Items 1 and 2.