JP2002185232A - Electronic parts for antenna and its manufacturing method, and helical coil antenna using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide universal electronic parts for antenna which can easily vary the resonance frequency for antenna by adjusting the conductive pattern made in a printed wiring board whereon they are mounted, concerning the electronic parts for antenna which are used for a wireless installation and are apt to be substantially exclusive design for individual wireless installations. SOLUTION: A plurality of arched conductive metallic parts 11 are arranged and fixed in electrically independent state to a roughly bar-shaped insulating part 12, and both ends of each conductive metallic part 11 constitute soldering terminals 13 so as to be flush with the bottom, which servers as the mounting face to a printed board, of the insulating parts 12 exposed outward from the surface of the above insulating part 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component for an antenna mainly used for a radio communication device represented by a portable telephone, a method for manufacturing the same, and a helical coil antenna using the electronic component for an antenna. .

[0002]

2. Description of the Related Art In recent years, portable wireless communication devices such as mobile phones and PHSs have become widespread. These wireless devices are provided with antennas for transmitting and receiving radio waves, and are provided with a whip type, fixed The directivity from external antennas such as a built-in type to a built-in type antenna is increasing. For the built-in antenna, a plate-shaped inverted-F type, a planar type, a chip type, and the like have been put into practical use due to its shape, but there is a great demand for the chip type in terms of volume, mass, and mountability.

[0003] In the case of a small antenna, a helical coil element capable of easily loading an inductance is widely used in order to obtain a low resonance frequency.

[0004] Such a conventional antenna electronic component, a method of manufacturing the same, and a helical coil antenna using the same will be described with reference to the drawings.

FIG. 19 is a perspective view for explaining a method of using a conventional antenna electronic component. In FIG. 19, reference numeral 1 denotes a conductive metal portion formed in a helical coil shape, 2 denotes a quadrangular prism-shaped insulating portion, The conductive metal part 1 is formed by printing on the surface of the insulating part 2 with the number of turns and pitch determined so as to obtain desired characteristics of the insulating part 2.

The two ends 3 of the helical coil-shaped conductive metal portion 1 are formed at both ends of a lower surface serving as a mounting surface of the insulating portion 2.

The antenna electronic component 6 having the above-described structure is normally used by being surface-mounted on a printed wiring board 4, and when used, the two ends 3 of the conductive metal part 1 are connected by printed wiring. The device operates as a helical coil antenna by soldering to the conductive pattern 5 of the plate 4 and supplying power to one end 3 via the conductive pattern 5.

[0008]

However, an antenna mounted on a wireless communication device that does not have a sufficiently large outer size compared to the wavelength, such as a mobile phone, is susceptible to the electrical conditions of the housing and has a low resonance frequency. The alignment is performed in a state of being mounted on the wireless communication device. In particular, in the case of the built-in antenna, the surrounding atmosphere on the printed wiring board is changed even if the same wireless communication device has a different component arrangement, which affects the antenna resonance frequency.

[0009] Therefore, it is difficult to use the above-mentioned conventional electronic parts for antennas for general use with other wireless communication devices, and they are practically predetermined and dedicated to individual wireless devices. There were challenges.

Further, when the design of the printed wiring board is changed during the development of the mobile phone, the antenna characteristics are affected, and it is difficult to flexibly respond to the change.

The present invention is to solve such a conventional problem, and it is possible to change an antenna resonance frequency and the like by adjusting a connection position of a conductive pattern formed on a printed wiring board to be mounted. It is an object of the present invention to provide an electronic component for an antenna that can be used for a semiconductor device, a method for manufacturing the same, and a helical coil antenna using the same.

[0012]

To achieve the above object, the present invention has the following arrangement.

The invention according to claim 1 of the present invention comprises a substantially rod-shaped insulating portion and a plurality of arched conductive metal portions fixed to the insulating portion in an electrically independent state with respect to each other. Each of the conductive metal portions is an electronic component for an antenna that is exposed from the surface of the insulating portion and can be soldered, and the plurality of arched conductive metal portions are formed on a printed wiring board by a conductive pattern. And by connecting them in a helical coil shape, it is possible to realize a small and thin antenna electronic component that can be used as an antenna element.

According to a second aspect of the present invention, in the first aspect of the present invention, arch-shaped conductive metal portions are arranged at equal intervals on the insulating portion, so that the versatility is high, and This has the effect of realizing an antenna electronic component that can easily perform antenna circuit design including design.

According to a third aspect of the present invention, in the first aspect of the present invention, the size of the arch-shaped portion of the conductive metal portion is made of at least two types, and the printed wiring is formed on a printed wiring board. An antenna that can support multiple resonance frequencies with one antenna electronic component by using conductive metal parts of the same size connected to each other in a helical coil shape, including the conductive pattern formed on the plate It has an effect that it can be used as an element.

According to a fourth aspect of the present invention, a plurality of arched conductive metal portions are formed by processing a conductive metal material, and then the conductive metal portions are electrically isolated from each other. A method of manufacturing an electronic component for an antenna in which both ends of each arch-shaped portion are exposed to the outside so as to form an approximately rod-shaped insulating portion by insert molding with an insulating resin. Plural arched conductive metal parts obtained by punching and bending can be easily processed with high precision, and by holding them with a mold or the like and providing an insulating part, it is possible to produce highly accurate electronic components for antennas. It has the effect that it can be produced continuously.

According to a fifth aspect of the present invention, in the fourth aspect of the invention, a plurality of arch-shaped conductive metal portions are formed into a continuous shape with at least one end connected to the connecting bar. Subsequently, this is subjected to insert molding with an insulating resin so as to expose at least both ends of the arch-shaped portion of the conductive metal portion to the outside, thereby forming a substantially bar-shaped insulating portion for fixing the conductive metal portion. Then, the connecting bar is cut into individual electronic parts for antennas. Since the conductive metal parts are manufactured in a continuous state, automation can be easily performed, and high precision can be achieved. This has the effect that large quantities of electronic components for antennas can be produced inexpensively.

According to a sixth aspect of the present invention, in the fourth aspect of the present invention, an arch-shaped first conductive metal portion protruding upward as a plurality of arch-shaped conductive metal portions and an arch-shaped protruding downwardly arched metal portion are provided. The second conductive metal part is processed and formed in a state of being connected to the connecting bar in a symmetrical relationship, and then both are in a non-contact state and both ends of the arch-shaped part of each conductive metal part are located on the same plane. Then, the first and second conductive metal parts are substantially fixed by insert molding with an insulating resin so as to expose the arc-shaped ends of the first and second conductive metal parts outward. A rod-shaped insulating part is formed, and then the connecting bar is cut and divided into individual electronic parts for antenna. A conductive metal part having a different size from one hoop-shaped metal material as a raw material is used. And form it By fixing it back and fixing it with the insulating part, for example, the conductive metal part according to the third aspect of the present invention can be realized in two types of arch-shaped parts. In spite of the fact that the size of the arch-shaped portion is two kinds, there is an effect that only one kind of material and one press die are required.

According to a seventh aspect of the present invention, there is provided the antenna electronic component according to the first aspect, wherein one end of the arch-shaped conductive metal portion and the other end of the conductive metal portion different from the one are printed. The plurality of arch-shaped conductive metal portions are electrically connected via a conductive pattern formed on a wiring board, and the plurality of arch-shaped conductive metal portions are connected in a helical coil shape to form a helical coil antenna. By simply mounting electronic components, the antenna can be used as a helical coil antenna including a conductive pattern, and by adjusting the length and width of the conductive pattern, the desired antenna resonance frequency can be adjusted. Having.

According to an eighth aspect of the present invention, there is provided the antenna electronic component according to the third aspect, wherein one end of the arch-shaped conductive metal portions having the same size and the other of the conductive metal portions different from the other end. Are electrically connected via conductive patterns formed on the printed wiring board, and the arch-shaped conductive metal portions are connected so as to form a plurality of helical coils according to the size of the arch-shaped portion. It is a helical coil antenna, and when mounting the electronic components for the antenna, the helical coil including the conductive pattern is mounted by connecting the arched conductive metal portions of the same size with the conductive pattern. As a coil antenna, one electronic component can be provided with a plurality of resonance frequencies, so that the number of antenna elements used in a device to be used can be reduced. It has the effect of say.

According to a ninth aspect of the present invention, in the invention according to the seventh aspect, only a required conductive metal portion is formed by a conductive pattern formed on a printed wiring board with respect to a plurality of arched conductive metal portions. Connected in a coil shape,
By adjusting the number of conductive metal parts to be connected, a helical antenna having a desired resonance frequency can be obtained. An electronic component can be used, and the component of the used device can be shared.

According to a tenth aspect of the present invention, in the seventh aspect of the present invention, a conductive pattern is provided on one end of a conductive pattern of a printed wiring board for connecting a plurality of arched conductive metal portions in a helical coil shape. By extending the length and width of this conductive pattern, the frequency band of the transmitted and received radio waves can be adjusted with high precision and fineness. This has the effect that it can be easily formed in a helical coil antenna with good electrical matching.

According to an eleventh aspect of the present invention, in the invention according to the seventh aspect, an arch-shaped conductive metal portion is dispersedly connected to one antenna electronic component so as to form a plurality of helical coils. Thus, a plurality of helical coil antennas can be configured using one electronic component for an antenna, which has an effect of contributing to a reduction in the number of components of a device to be used.

According to a twelfth aspect of the present invention, in the seventh aspect of the present invention, a plurality of antenna electronic components are connected in a continuous helical coil shape by a conductive pattern formed on a printed wiring board. Was done,
With this configuration, a helical coil antenna having a long coil length can be formed using one kind of electronic components for an antenna, and when used in a low frequency band, a new antenna having a long coil length is used. There is an effect that it is not necessary to employ an electronic component, and it is possible to configure a device having desired characteristics by using the above-described one type of electronic component for an antenna for general use.

According to a thirteenth aspect of the present invention, in the seventh aspect of the present invention, a portion formed in a helical coil shape by the conductive pattern of the printed wiring board and the arch-shaped conductive metal portion serves to transmit and receive radio waves. The antenna resonates at approximately one-half wavelength, and is configured to have a reverse winding every approximately one-half wavelength, and the winding direction can be easily set only by a method of connecting the conductive metal parts of the electronic component for the antenna. When the winding direction is set to a reverse winding direction for each half wavelength of the desired one, the direction of the standing wave current can be made uniform, so that the loss is small, the gain is high, and the directivity is excellent. It has the effect of being able to compose a product.

According to a fourteenth aspect of the present invention, in accordance with the seventh aspect of the present invention, a double-sided printed wiring board or a multilayer printed wiring board is used, and an arch-shaped conductive metal portion is formed with a through hole to form the double-sided printed wiring board or the multilayered wiring board. A conductive pattern formed on a surface or layer different from the mounting surface of the printed wiring board is to be connected in a helical coil shape,
An antenna having a larger cross-sectional area of the helical coil can be formed, and an antenna having a wider band characteristic can be easily obtained than when connected by a conductive pattern on a printed wiring board on which electronic components for an antenna are mounted. Have.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS.

The same components as those described in the section of the related art are denoted by the same reference numerals, and detailed description will be omitted.

(Embodiment 1) Using Embodiment 1,
In particular, claims 1, 2, 4, 5, 7, and 9 to 12 of the present invention.
Will be described.

FIG. 1 is a perspective view of an electronic component for an antenna according to a first embodiment of the present invention. As shown in FIG.
A, 11B,... Are arch-shaped conductive metal parts made of copper or the like. The conductive metal parts 11A, 11B,. Indicates those having the same pitch.).

The insulating portion 12 has a substantially rod-like outer shape with a lower surface formed in a planar shape, and the lower surface serves as a mounting surface to a printed wiring board (not shown).

The arch-shaped conductive metal portion 11 (11
A, 11B,...) Are arranged and fixed to the insulating portion 12 in a state of being electrically independent from each other, and both ends of each conductive metal portion 11 are outside the surface of the insulating portion 12. The solder terminals 13 are exposed to the sides.

The lower surface of the soldering terminal 13
The lower surface, which is the mounting surface of the insulating portion 12 on the printed wiring board,
They are formed so as to be on the same plane.

Next, a method of manufacturing the electronic component for antenna 15 configured as described above will be described with reference to the drawings.

2 to 4 are views for explaining a method of manufacturing an electronic component for an antenna according to the first embodiment of the present invention.

First, as shown in FIG. 2, a plurality of rectangular holes 17C of the same length, which are substantially parallel to each other and are substantially parallel to each other, are formed at predetermined intervals in a middle portion of a thin metal strip 16 which is a metal material having good conductivity and which can be soldered. By piercing and arranging in the width direction, narrow portions 18 having a predetermined pitch connected in parallel to the bars 17A and 17B on both sides formed in the width direction of the material are formed.

Subsequently, as shown in FIG. 3, the plurality of narrow portions 18 are bent upward in an arch shape at a position separated from the bars 17A and 17B on both sides by a predetermined length, so that the narrow portions 18 have the same shape. The arch-shaped conductive metal portions 11 (11A, 11B,...)
..) Are formed at an equal pitch.

Next, as shown in FIG. 4, the arch-shaped portion of the arch-shaped conductive metal portion 11 is insert-molded with an insulating resin and fixed to the substantially bar-shaped insulating portion 12.

Next, the connecting portion 19 of the arch-shaped conductive metal portion 11 connected to the bars 17A and 17B on both sides from the insert-molded substantially rod-shaped insulating portion 12 is separated from the insulating portion 12 by a predetermined length (see FIG. 4 (indicated by broken lines), the individual antenna electronic components 15 in which the connecting portions 19 are the solder terminals 13 are obtained.

Although the above description has been made with reference to the hoop-shaped one connected by the crosspieces on both sides, it is not necessary to be the hoop-shaped, and the conductive metal formed by bending a conductive thin plate or wire into an arch shape. The electronic parts for an antenna may be formed by positioning the parts in a molding die at a required number of predetermined pitches, insert-molding the same with an insulating resin, and fixing the parts with a substantially rod-shaped insulating part.

The antenna electronic component 15 configured as described above is used by being mounted and mounted on a printed wiring board such as a device to be used. The mounting state will be described below with reference to FIG. I do.

FIG. 5 shows that the conductive pattern 20 of the printed wiring board 14 serving as a mounting portion of the antenna electronic component 15 is
One side of the soldering terminal 13 of the predetermined conductive metal portion 11A and a conductive metal portion 11B adjacent to the conductive metal portion 11A.
The other side of the soldering terminal 13 is formed so as to be sequentially connectable.

The conductive pattern 20 is provided one less than the conductive metal portion 11 of the electronic component 15 for an antenna, and they are in parallel with each other.

The electronic component 15 for an antenna is mounted on the printed wiring board 14 by soldering to the conductive pattern 20 so as to correspond to the soldering terminal 13.

Then, what is mounted in the above state is formed as a helical coil in which a plurality of conductive metal parts 11 are connected to one another by connecting the conductive pattern 20 and the soldering terminals 13 to each other. By supplying power from a connection pattern 61 to a predetermined circuit formed on the circuit 14, the antenna can be used as a helical coil antenna.

The interval between the arch-shaped conductive metal portions 11 is a predetermined pitch as described above. However, if the pitch is equal as shown in FIG. 5, the frequency can be easily adjusted and the antenna design can be easily performed. If is made unequal pitch, it can be used as an unequal-pitch helical coil antenna which generally has broadband characteristics.

As described above, the electronic component for an antenna according to the first embodiment has a simple configuration and the printed wiring board 14 on which the predetermined conductive pattern 20 is formed.
Further, the antenna can be used as a helical coil antenna only by soldering and mounting the soldering terminal 13.

At this time, since the conductive pattern 20 of the printed wiring board 14 is used as a part of the helical coil portion, the one according to the present invention can be easily formed thinner than the conventional one.

In the above mounted state, if all of the arch-shaped conductive metal portions 11 are connected to each other by the conductive pattern 20 and lower than the target resonance frequency, the number of the connected conductive metal portions 11 is limited. The conductive pattern 20 may be formed in advance.

That is, when the above-described antenna electronic component 15 is used, as shown in FIG. 6, of the plurality of conductive metal portions 11, the conductive metal portion 1 not connected to the conductive pattern 20 is used.
By providing 1E, the desired resonance frequency can be adjusted without making any change to the antenna electronic component 15, and the antenna electronic component 15 can be used as a shared component.

Conversely, a plurality of arched conductive metal parts 1
If the whole is connected to the conductive pattern 20 and the resonance frequency becomes higher than the target resonance frequency, the width of the conductive pattern 20 itself is adjusted, and as shown in FIG. 7, the end is opposite to the helical coil-shaped power supply side. It is also possible to adjust to the target resonance frequency by forming an end pattern 21 which is a conductive lead pattern at the end, or adjusting the length and width of the end pattern 21. .

Further, only the desired two of the above-described two concepts, that is, the plurality of conductive metal parts 11 are connected by the conductive pattern 20, and the width of the conductive pattern 20 itself,
The frequency characteristics may be finely adjusted by adjusting the length and width of the end pattern 21.

Further, as shown in FIG. 8, if conductive metal portions 11 are connected discretely every other by conductive patterns 22, the interval between conductive metal portions 11 is an integral multiple of the interval between conductive metal portions 11. A helical coil antenna can be formed with a winding pitch, and a broadband antenna can be easily configured.

Electronic component for antenna 1 used at this time
The method 5 is performed for a case where the conductive metal portions 11 are arranged at an equal pitch, so that the frequency characteristics thereof can be predicted to some extent.

Further, as shown in FIG. 9, two helical coil antennas 15
In order to form the conductive patterns A and 15B, the conductive pattern 20 is removed in the middle and made discontinuous, and the two conductive patterns 20A and 20B are formed.
In this case, it is sufficient to connect the arched conductive metal parts 11 respectively, and a plurality of antennas can be constituted by one antenna electronic component 15.

At this time, the helical coil antenna 15
A, 15B, conductive patterns 20 located outside each
One end of each of A and 20B is used as connection patterns 61 and 62 connected to a predetermined circuit, so that a so-called multi-band antenna can be realized.

Contrary to this, as shown in FIG. 10, a plurality of antenna electronic parts 15 are used, and a single helical coil antenna is formed by connecting the antenna electronic parts 15 together with the conductive pattern 20C including the antenna electronic parts 15. In particular, when matching to a low frequency band, the antenna electronic component 1 may be used.
As 5, it is possible to respond easily and flexibly while maintaining versatility.

As described above, the antenna electronic component according to the first embodiment can easily change the antenna resonance frequency by forming and connecting the conductive pattern of the printed wiring board to be mounted as necessary. It is also expected that it can be used as a used part and can be used as a highly versatile used part, and that the parts management on the used equipment side can be simplified.

(Embodiment 2) Using Embodiment 2,
The invention described in claim 13 will be described.

The same components as those of the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

FIG. 11 is a perspective view illustrating a mounted state of a helical coil antenna using an electronic component for an antenna according to the second embodiment of the present invention.

As shown in the drawing, the antenna component according to the second embodiment is different from the electronic component 1 for an antenna according to the first embodiment.
5 are arranged so that the plurality of arched conductive metal portions 11 resonate at approximately half the wavelength of the transmitted / received radio wave and reversely wind at approximately half the wavelength.
0 of the conductive pattern 31 (31A, 31B, 3)
1C) and are connected in a helical coil shape.

In general, the standing wave current of the antenna is reversed every half wavelength, so that a long antenna often has undesired characteristics such that the current cancels out and the radiation beam is broken. On the other hand, the above-described configuration can make the direction of the standing wave current uniform, so that it operates as an array antenna, and can easily realize high gain and directivity characteristics.

The other components are the same as those according to the first embodiment and will not be described.

As described above, according to the second embodiment, in one antenna electronic component, a plurality of arch-shaped conductive metal portions 11 resonate at approximately 波長 wavelength of a transmitted / received radio wave. , Reverse winding every half wavelength,
By being connected in the form of a helical coil including the conductive pattern 31 formed on the printed wiring board 30, a high gain and good directivity can be realized with only one antenna electronic component 15.

By using a plurality of antenna electronic parts 15, as shown in the above-described configuration, approximately one half of the transmitted / received radio wave is used.
The conductive pattern 31 formed on the printed wiring board 30 resonates with the wavelength and is reversely wound approximately every half wavelength.
A similar effect can be obtained even if the antenna is connected in a helical coil shape to form a single antenna.

(Embodiment 3) Using Embodiment 3,
In particular, the inventions described in claims 3, 6 and 8 will be described.

The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

FIG. 12 is a perspective view of an antenna electronic component according to Embodiment 3 of the present invention.

In the third embodiment, as shown in FIG. 12, the configuration in which a plurality of arch-shaped conductive metal portions 41A and 41B are fixed to the insulating portion 42 is different from that of the first embodiment. The same, but the conductive metal portions 41A, 41B
However, they differ in that they are composed of two kinds of electrically-independent states having different sizes.

In the following, the conductive metal parts 41A, 41B
Are described as a large-diameter conductive metal portion 41A and a small-diameter conductive metal portion 41B, respectively, for clear description.

As shown in the figure, the large-diameter conductive metal portion 41A and the small-diameter conductive metal portion 41B are connected to an insulating portion 42A.
And soldering terminals 43A and 43B are provided with insulating portions 42A and 43B, respectively.
Are arranged on the same plane as the mounting surface. That is, the large-diameter conductive metal portion 41A is fixed along the outer peripheral surface side of the insulating portion 42, and the small-diameter conductive metal portion 41B is embedded and fixed in the insulating portion 42.

Next, a method of manufacturing the electronic component 40 for an antenna configured as described above will be described with reference to the drawings.

13 to 16 are views for explaining a method of manufacturing an electronic component for an antenna according to the third embodiment of the present invention.

First, as shown in FIG. 13, a thin metal strip 23 of a predetermined size having good conductivity and solderable metal material is used.
Is punched out, and a plurality of first rectangular holes 23B of the same length substantially parallel to each other are punched on the lower side in the width direction to form a plurality of first linear portions 24 connected on the right side by a connecting bar 23C. Similarly, by punching a plurality of second rectangular holes 23D having the same length substantially parallel to each other on the upper side in the width direction, a plurality of second linear portions 25 similarly connected on the right side by the connecting bar 23E are formed. .

Then, as shown in FIG. 14, the connecting bar 23C on the right side of the first linear portion 24 is connected to the connecting bar 23 of the next pitch.
After being separated from F, a plurality of first linear portions 24 are formed to protrude upward in an arch shape so that a first strip-shaped portion 26 corresponding to the first conductive metal portion is connected to the left connecting bar 23F. To form

Similarly, after the connecting bar 23E on the right side of the second linear portion 25 is separated from the connecting bar 23F of the next pitch, the plurality of second linear portions 25 are directed downward to the arch-like first narrow band shape. An arc-shaped second narrow band-shaped portion 27 corresponding to the second conductive metal portion is formed by projecting into an arch shape having a smaller diameter than the portion 26.

Then, an L-shaped groove 23G is formed in the connecting bar 23F on the left side of the second narrow band 27 so that the second narrow band 27 is connected between the left and right connecting bars 23F and 23E. Form a shape in which only the left connecting bar 23F is connected to the central connecting portion 23H of the sheet metal strip 23.

Thereafter, as shown in the perspective view of FIG. 15, the second strip-like portion 27 is positioned at the position shown by the broken line in FIG. Part 26
By folding back to the side and overlapping, the small-diameter upward arc-shaped second narrow band-shaped portion 27 is inserted in parallel between each of the plurality of first narrow band-shaped portions 26 processed to project upward into an arc shape. Combine with.

The first narrow band portion 26 and the second narrow band portion 2
7 so that the root plane of the arched part is the same plane,
The second narrow strip portion 27 is formed in consideration of the thickness of the thin metal strip 23 when performing the arch-shaped protruding process described with reference to FIG.

Next, as shown in the perspective view of FIG. 16, the outer peripheral portions of the first narrow band portion 26 and the second narrow band portion 27 are held by a molding die, and the arched portion is formed of an insulating resin material. Insert molding is performed to form a substantially rod-shaped insulating portion 42.

Next, the connecting portions 26A, 27A of the first narrow band portion 26 and the second narrow band portion 27 extending around the insert-molded substantially rod-shaped insulating portion 42 are separated from the insulating portion by a predetermined length. By cutting at the first and second narrow strips 26 and 27 (shown by broken lines in FIG. 16), the large-diameter conductive metal 41A and the small-diameter conductive metal 41B come out of the insulating part 42. Connecting portions 26A and 27A are soldered terminals 4
The antenna electronic components 40 of 3A and 43B are manufactured.

Next, the method of using the antenna electronic component 40 having the above configuration will be described. As shown in FIG. 17, the large-diameter conductive metal portions 41A are connected to each other by the conductive pattern 46A of the printed wiring board 45 and the small-diameter conductive metal portions 41A. The conductive metal portions 41B are similarly connected to each other by a conductive pattern 46B so as to be connected to form a plurality of helical coils having two different diameters, and may be used as a helical coil antenna capable of coping with a plurality of resonance frequencies. You can do it.

As described above, the antenna electronic component according to the third embodiment has a plurality of arch-shaped conductive metal portions formed of two or more types having different sizes and being electrically independent from each other. By using this, an antenna capable of coping with a plurality of resonance frequencies, that is, a multi-band antenna can be easily obtained by easily configuring a helical coil antenna.

(Embodiment 4) Using Embodiment 4,
The invention described in claim 14 of the present invention will be described.

The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

FIG. 18 shows a helical coil antenna using an antenna electronic component according to Embodiment 4 of the present invention.

In the figure, 51 is a multilayer printed wiring board, 52 is a via hole formed in the multilayer printed wiring board 51, and 65 is a part separated from the surface of the multilayer printed wiring board 51 on which the antenna electronic component 15 is mounted. This is a conductive pattern formed on the layer.

The conductive pattern 65 is formed by forming the configuration of the conductive pattern 20 described in the first embodiment on the intermediate layer of the multilayer printed wiring board 51. Description is omitted because it is the same as 1.

Then, the antenna electronic component 15 is mounted on the multilayer printed wiring board 51 so that the respective arch-shaped conductive metal portions 11 are separated downward from the mounting surface of the multilayer printed wiring board 51 by the via holes 52. The helical coil antenna is formed by being led out to the intermediate layer and connected by the conductive pattern 65 formed in that layer.

As described above, according to the fourth embodiment, a multilayer printed wiring board is used as a printed wiring board, and an arch-shaped conductive metal portion is formed in a layer separated downward from a mounting surface of the multilayer printed wiring board by a via hole. Since it is derived and connected with the conductive pattern formed on that layer to form a helical coil antenna, it is possible to form an antenna having a large diameter including the thickness direction of the multilayer printed wiring board. It can be made to have broadband frequency characteristics.

In the fourth embodiment, the description has been given of the case where the multi-layer printed wiring board is mounted on the multilayer printed wiring board. However, the multilayer printed wiring board may be replaced with a double-sided printed wiring board to constitute a helical coil antenna. Broadband frequency characteristics can be achieved.

[0093]

As described above, according to the present invention, it is possible to easily change the antenna resonance frequency by adjusting the conductive pattern formed on the printed wiring board to be mounted. An advantageous effect that an electronic component can be provided can be obtained.

Further, depending on the mounting method, various high-performance antennas and multi-band antennas can be realized with versatility.

[Brief description of the drawings]

FIG. 1 is a perspective view of an electronic component for an antenna according to a first embodiment of the present invention.

FIG. 2 is a view for explaining a method of manufacturing the electronic component for the antenna.

FIG. 3 is a view for explaining a method of manufacturing the electronic component for the antenna.

FIG. 4 is a diagram illustrating a method of manufacturing the electronic component for the antenna.

FIG. 5 is a view for explaining a mounting state of the electronic component for the antenna.

FIG. 6 is a diagram illustrating a mounting state when adjusting the antenna resonance frequency in the electronic component for the antenna.

FIG. 7 is a view for explaining a mounting state when adjusting the antenna resonance frequency in the antenna electronic component.

FIG. 8 is a diagram illustrating a mounting state when the electronic component for an antenna is used as a broadband antenna.

FIG. 9 is a diagram illustrating a mounting state in which the antenna electronic component is divided and used as two antennas.

FIG. 10 is a diagram illustrating a mounting state in which one antenna of a low frequency is configured using the plurality of antenna electronic components.

FIG. 11 is a perspective view of a helical coil antenna using an antenna electronic component according to a second embodiment of the present invention.

FIG. 12 is a perspective view of an electronic component for an antenna according to a third embodiment of the present invention.

FIG. 13 is a view for explaining a method of manufacturing the electronic component for the antenna.

FIG. 14 is a view for explaining a method of manufacturing the electronic component for the antenna.

FIG. 15 is a diagram illustrating a method of manufacturing the electronic component for the antenna.

FIG. 16 is a view for explaining a method of manufacturing the electronic component for the antenna.

FIG. 17 is a view for explaining a method of using the antenna electronic component.

FIG. 18 is a view for explaining a helical coil antenna using the electronic component for antenna according to the fourth embodiment.

FIG. 19 is a perspective view of a conventional electronic component for an antenna.

[Explanation of symbols]

11, 11A, 11B, 11E, 41A, 41B Conductive metal part 12, 42 Insulating part 13, 43A, 43B Soldering terminal 14, 30, 45 Printed wiring board 15, 40 Electronic component for antenna 15A, 15B Helical coil antenna 16, 23 Metal sheet strip 17A, 17B Bar 17C Rectangular hole 18 Narrow part 19, 26A, 27A Connecting part 20, 20A, 20B, 22, 31, 31A, 31B,
31C, 46A, 46B, 65 Conductive pattern 21 End pattern 23B First rectangular hole 23C, 23E, 23F Connecting bar 23D Second rectangular hole 23G Groove 23H Central connecting part 24 First linear part 25 Second linear part 26 First Narrow band 27 Second narrow band 52 Via hole 51 Multilayer printed wiring board 61, 62 Connection pattern

Claims (14)

[Claims] An arc-shaped conductive metal portion fixed to the insulating portion in a state of being electrically independent from each other, and both ends of the arch-shaped conductive metal portion are formed on the insulating portion. An electronic component for an antenna that is exposed from the surface of the insulating part and can be soldered. 2. The electronic component for an antenna according to claim 1, wherein the arched conductive metal portions are arranged at equal intervals in the insulating portion. 3. The antenna electronic component according to claim 1, wherein the size of the arch-shaped portion of the conductive metal portion is at least two types. 4. A plurality of arched conductive metal portions are formed by processing a conductive metal material, and thereafter each of the conductive metal portions is electrically independent of each other and both ends of each arched portion. A method for manufacturing an electronic component for an antenna, wherein a substantially rod-shaped insulating portion is formed by insert molding with an insulating resin so that the portion is exposed to the outside. 5. A plurality of arch-shaped conductive metal portions are formed into a continuous shape with at least one end thereof connected to a connecting bar, and subsequently, the plurality of arch-shaped conductive metal portions are formed into at least an arch-shaped portion of the conductive metal portion. Insert molding is performed with an insulating resin so that both end portions are exposed to the outside to form a substantially rod-shaped insulating portion for fixing the conductive metal portion, and then the connecting bar is cut to obtain individual antenna electronic components. The method for manufacturing an electronic component for an antenna according to claim 4, wherein the electronic component is divided into two. 6. A state in which, as a plurality of arch-shaped conductive metal parts, an arch-shaped first conductive metal part protruding upward and an arch-shaped second conductive metal part protruding downward are connected to the connecting bar in a symmetrical relationship. Then, it is folded so that both ends are in a non-contact state and both ends of the arch-shaped portion of each conductive metal portion are located on the same plane, and then the first and second conductive metal portions are formed. Insert-molding with an insulating resin so as to expose both ends of the arch outward to form a substantially rod-shaped insulating portion for fixing the first and second conductive metal portions, and then connecting the connecting bar The method for manufacturing an electronic component for an antenna according to claim 4, wherein the electronic component for an antenna is cut into individual electronic components for an antenna. 7. An electronic component according to claim 1, wherein one end of the arch-shaped conductive metal part and the other end of the conductive metal part different from the one are formed on a printed wiring board. A helical coil antenna electrically connected via a pattern, wherein the plurality of arched conductive metal portions are connected in a helical coil shape. 8. An electronic component for an antenna according to claim 3, wherein one end of the arch-shaped conductive metal portions having the same size and the other end of the conductive metal portion different from the one are printed wiring board. A helical coil antenna electrically connected through a conductive pattern formed in the helical coil, wherein the arch-shaped conductive metal portion is connected to form a plurality of helical coils according to the size of the arch-shaped portion. 9. For a plurality of arch-shaped conductive metal parts,
8. The helical coil antenna according to claim 7, wherein only required conductive metal portions are connected in a helical coil shape by a conductive pattern formed on the printed wiring board. 10. The helical according to claim 7, wherein a conductive lead pattern extends at one end of the conductive pattern of the printed wiring board connecting the plurality of arched conductive metal parts in a helical coil shape. Coil antenna. 11. An electronic component for an antenna,
The helical coil antenna according to claim 7, wherein the arch-shaped conductive metal parts are connected in a distributed manner so as to form a plurality of helical coils. 12. The helical coil antenna according to claim 7, wherein the plurality of antenna electronic components are connected in a continuous helical coil shape by a conductive pattern formed on the printed wiring board. 13. A portion formed in a helical coil shape by a conductive pattern of a printed wiring board and an arch-shaped conductive metal portion resonates at approximately 波長 wavelength of a radio wave to be transmitted and received, and substantially 波長 wavelength. 8. A structure according to claim 7, wherein each of the windings is reversely wound.
2. The helical coil antenna according to 1. 14. A conductive material in which a double-sided printed wiring board or a multilayer printed wiring board is used, and an arc-shaped conductive metal portion is formed on a surface or a layer different from a mounting surface of the double-sided printed wiring board or the multilayer printed wiring board by through holes. The helical coil antenna according to claim 7, wherein the helical coil antenna is connected in a helical coil shape in a pattern.