JP2004320075A - Chip antenna, antenna unit and radio communications card using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure the radiation of a radio wave from the reflecting electrodes formed on both surfaces of the base of the chip antenna and to suppress the height when a chip antenna is placed on a mounting substrate. <P>SOLUTION: The antenna unit includes a chip antenna 23 having a first radiation electrode 31 formed on the first main surface 30a of the base 30 constituted of a dielectric, a second radiation electrode 32 formed on a second main surface 30b opposed to the first main surface 30a, and feeders 31a, 32a for supplying signal to the first radiation electrode 31 and the second radiation electrode 32; and the mounting substrate 24 having a hole 29 passing from the first substrate surface 24a through the second substrate surface 24b. The chip antenna 23 is embedded at least in the part of the hole 29 or coated at least at the part of the hole 29 and mounted. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a chip antenna, an antenna unit, and a wireless communication card mounted on an information processing device.
[0002]
[Prior art]
2. Description of the Related Art In recent years, information processing apparatuses such as personal computers (hereinafter, referred to as “PCs”) and personal digital assistants have become increasingly popular due to lower prices, higher performance, and higher functionality. Entering. Information processed using an information processing device is often shared or transmitted at work or home via a communication network. In addition, the communication network needs to be connected not only in a workplace or home, but also in a public place such as a station or an airport.
[0003]
However, conventionally, since the communication network and the information processing apparatus, which is a terminal, are wiredly connected via a cable, the place where the communication network can be connected is limited to a place having a telephone line outlet. Therefore, wireless communication is being used as a means for satisfying the above-mentioned necessity.
[0004]
Under such circumstances, portable terminals such as laptop or notebook PCs have become widespread as portable information processing apparatuses. In order to add a wireless communication function to an existing information processing apparatus, a wireless communication card (for example, a wireless LAN card) is generally inserted into an expansion slot such as a card slot.
[0005]
In the wireless communication card, an antenna is arranged in an extended portion located outside the expansion slot in a state where the wireless communication card is inserted into the expansion slot, and care is taken so that radio waves radiated from the antenna are not shielded. The antenna of the wireless communication card employs a diversity system to obtain a stable reception state, or a multi-band system corresponding to a plurality of frequency bands.
[0006]
Here, a chip antenna in which a radiation electrode is formed on a dielectric substrate is known as a small antenna incorporated in a wireless communication card. At least two antennas are required to implement a diversity system or a multi-band system with a chip antenna, and at least four antennas are required to implement both at the same time. Therefore, the number of parts and the number of assembly steps are increased, and the total cost is increased.
[0007]
[Patent Document 1]
JP 2002-11344 A
[0008]
[Problems to be solved by the invention]
Now, in order to avoid the above-mentioned problem, it is conceivable to provide antennas having different frequency characteristics on a substrate as in Patent Document 1, but the mounting area efficiency is poor and the mounting area is limited.
[0009]
Therefore, one of the objects of the present invention is to provide a chip antenna which has a high mounting area efficiency and is not limited in a mountable area.
[0010]
Also, if the height of the antenna chip is high, the extended portion of the wireless communication card becomes thicker than the card thickness of the wireless communication card. For example, when an expansion slot is installed adjacent to the wireless communication card in the thickness direction, such as in a laptop or notebook PC, if the wireless communication card becomes thicker in this way, any one of the expansion cards is extended. Can only be inserted into slots. In other words, even if it is desired to use another wireless communication card having a thick extended portion, both cards cannot be used simultaneously.
[0011]
Therefore, another object of the present invention is to make it possible for radio waves from radiating electrodes formed on both surfaces of a base of a chip antenna to be radiated without being shielded, and to have a height when the chip antenna is mounted on a mounting board. And a wireless communication card using the same.
[0012]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a chip antenna according to the present invention includes a first radiation electrode formed on a first main surface of a base made of a dielectric, and a second radiation electrode facing the first main surface. And a feed line for supplying a signal to the first radiation electrode and the second radiation electrode.
[0013]
This makes it possible to provide a chip antenna having the same or different frequency characteristics with a single chip by forming the radiation electrodes on the two main surfaces facing each other of the base. Further, since the antenna is formed into a chip, the mounting area efficiency with respect to the mounting substrate is good, and a chip antenna whose mounting area is not limited is obtained.
[0014]
Further, in order to solve the above problem, an antenna unit according to the present invention includes a first radiation electrode formed on a first main surface of a base made of a dielectric, and a first radiation electrode facing the first main surface. A chip antenna provided with a second radiation electrode formed on the main surface of the second substrate, and a feed line for supplying a signal to the first radiation electrode and the second radiation electrode; A mounting board formed with a mounting hole penetrating the board surface, wherein the chip antenna is embedded in at least a part of the mounting hole, or is mounted so as to cover at least a part of the mounting hole. And
[0015]
Accordingly, radio waves from the radiation electrodes formed on both surfaces of the base of the chip antenna can be radiated without being shielded, and the height when the chip antenna is mounted on the mounting substrate can be suppressed. .
[0016]
Furthermore, in order to solve the above problem, an antenna unit according to the present invention includes a first radiation electrode formed on a first main surface of a base made of a dielectric, and a first radiation electrode opposed to the first main surface. Chip antenna having a second radiating electrode formed on the main surface of No. 2, a feed line for supplying a signal to the first radiating electrode and the second radiating electrode, and a mounting having a cutout formed therein A chip antenna, wherein the chip antenna is embedded in at least a part of the notch, or is mounted so as to cover at least a part of the notch.
[0017]
Accordingly, radio waves from the radiation electrodes formed on both surfaces of the base of the chip antenna can be radiated without being shielded, and the height when the chip antenna is mounted on the mounting substrate can be suppressed. .
[0018]
In a preferred embodiment of the present invention, the chip antenna includes a ground electrode formed on an inner layer of a base located between the first radiation electrode and the second radiation electrode, and the mounting substrate is connected to the ground electrode. Ground conductor.
[0019]
Accordingly, radio waves from the radiation electrodes formed on both surfaces of the base of the chip antenna can be radiated without being shielded, and the height when the chip antenna is mounted on the mounting substrate can be suppressed. .
[0020]
In a further preferred aspect of the present invention, a step portion is formed on at least a part of the side surface of the chip antenna, and the chip antenna is supported by the step portion and mounted in a mounting hole or a cutout portion.
[0021]
Thereby, the chip antenna can be temporarily fixed to the mounting board, so that workability at the time of assembling the antenna unit is improved.
[0022]
In a further preferred aspect of the present invention, a groove is formed on a side surface of the chip antenna, and the chip antenna is mounted in the mounting hole by fitting the groove to an edge of a mounting hole or a notch.
[0023]
Thereby, the chip antenna can be temporarily fixed to the mounting board, so that workability at the time of assembling the antenna unit is improved.
[0024]
In a further preferred aspect of the present invention, the device has an attachment provided with a flange for supporting the chip antenna, and an attachment groove provided in the attachment and fitted to an edge of a mounting hole or a notch.
[0025]
Thereby, the chip antenna can be temporarily fixed to the mounting board, so that workability at the time of assembling the antenna unit is improved.
[0026]
In a further preferred aspect of the present invention, the step portion, the groove portion or the attachment groove is formed on two opposing side surfaces of the chip antenna.
[0027]
Thereby, the chip antenna can be temporarily fixed to the mounting board, so that workability at the time of assembling the antenna unit is improved.
[0028]
In a further preferred aspect of the present invention, a recess is formed at an edge of the mounting hole or the notch, and the chip antenna is supported by the recess and mounted in the mounting hole or the notch.
[0029]
Thereby, the chip antenna can be temporarily fixed to the mounting board, so that workability at the time of assembling the antenna unit is improved.
[0030]
In a further preferred aspect of the present invention, the recess is formed at two opposing edges of a mounting hole or a notch.
[0031]
Thereby, the chip antenna can be temporarily fixed to the mounting board, so that workability at the time of assembling the antenna unit is improved.
[0032]
Furthermore, in order to solve the above problem, an antenna unit according to the present invention includes a first radiation electrode formed on a first main surface of a base made of a dielectric, and a first radiation electrode opposed to the first main surface. A chip antenna including a second radiating electrode formed on the main surface of the second radiator, a feed line for supplying a signal to the first radiating electrode and the second radiating electrode, and an antenna mounting area without a metal conductor And the chip antenna is mounted on at least a part of the antenna mounting area.
[0033]
Accordingly, radio waves from the radiation electrodes formed on both surfaces of the base of the chip antenna can be radiated without being shielded, and the height when the chip antenna is mounted on the mounting substrate can be suppressed. .
[0034]
In a further preferred aspect of the present invention, the first radiation electrode and the second radiation electrode radiate radio waves having the same frequency.
[0035]
This makes it possible to obtain a diversity chip antenna with one chip antenna.
[0036]
In a further preferred aspect of the present invention, the first radiating electrode and the second radiating electrode emit radio waves having mutually different frequencies.
[0037]
This makes it possible to obtain a multi-band type chip antenna with one chip antenna.
[0038]
In order to solve the above-mentioned problem, a wireless communication card according to the present invention is a wireless communication card which is removably inserted into an expansion slot of an information processing device and provides a wireless communication function to the information processing device, And the chip antenna is arranged so as to be located outside the expansion slot in a state of being inserted into the expansion slot.
[0039]
This makes it possible to obtain a wireless communication card having a substantially uniform thickness.
[0040]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described more specifically with reference to the drawings. Here, in the attached drawings, the same members are denoted by the same reference numerals, and duplicate description is omitted. The embodiment of the present invention is a particularly useful embodiment in which the present invention is implemented, and the present invention is not limited to the embodiment.
[0041]
FIG. 1 is a perspective view showing a wireless communication card using the antenna unit of the present invention and a personal computer having an expansion slot into which the wireless communication card is inserted. FIG. 2 shows a part of the wireless communication card shown in FIG. FIG. 3 is a perspective view showing a cutaway view, FIG. 3 is a perspective view showing an antenna unit according to an embodiment of the present invention provided in the wireless communication card of FIG. 2, and FIG. 4 is a cross section taken along line AA of FIG. FIG. 5 is a perspective view showing an antenna unit according to another embodiment of the present invention provided in the wireless communication card of FIG. 2, FIG. 6 is a cross-sectional view taken along the line BB of FIG. FIG. 8 is a perspective view showing an antenna unit according to still another embodiment of the present invention provided in the wireless communication card of FIG. 2, FIG. 8 is a sectional view taken along line CC of FIG. 7, and FIG. Another embodiment of the present invention provided in the wireless communication card of the present invention FIG. 10 is a perspective view showing an antenna unit according to an embodiment, FIG. 10 is a cross-sectional view taken along line DD of FIG. 9, and FIG. 11 is still another embodiment of the present invention provided in the wireless communication card of FIG. FIG. 12 is a perspective view showing an antenna unit, FIG. 12 is a cross-sectional view taken along line EE of FIG. 11, FIG. 13 is a perspective view showing a main part of an antenna unit according to still another embodiment of the present invention, and FIG. FIG. 15 is a perspective view showing a main part of an antenna unit according to still another embodiment of the present invention, and FIG. 15 is a perspective view showing a main part of an antenna unit according to still another embodiment of the present invention.
[0042]
As shown in FIG. 1, a portable personal computer 11, which is a type of information processing apparatus, includes a main body unit 12 that stores various electronic components (not shown) and includes an input unit such as a keyboard 12a. And a display unit 13 composed of a liquid crystal panel. A PC card slot (expansion slot) 14 into which a PC card (wireless communication card) 21 for wireless communication is detachably inserted is provided on a side surface of the main body 12. As the information processing device, various devices such as a portable information terminal other than a personal computer can be applied.
[0043]
As shown in FIG. 2, a PC card 21 for providing a wireless communication function to the personal computer 11 has various electronic components (not shown) mounted thereon and has a LED 22 indicating an operation state and a signal reception at a front end thereof. It has a mounting board 24 on which a chip antenna 23 as a transmitting means is arranged.
[0044]
The positions where the electronic components are mounted on the mounting board 24 are shielded by covering both surfaces with metal shield covers 25a and 25b such as SUS. In addition, the distal end where the chip antenna 23 is disposed is covered with a resin cover 26 such as PBT (polybutylene-terephthalate) which does not hinder transmission and reception of radio waves, and the PC card 21 is inserted into the PC card slot 14. The extended portion protrudes from the PC card slot 14 and is located outside. Further, a connection connector 27 for electrically connecting the PC card 21 to the personal computer 11 when inserted into the PC card slot 14 is provided on the opposite side of the extended portion. Then, the shield covers 25a and 25b and the resin cover 26 are fixedly mounted on the mounting board 24 with the LED 22, the chip antenna 23 and the connector part 27 mounted thereon, and the PC card 21 is integrally formed.
[0045]
In the present application, an antenna unit is constituted by the chip antenna 23 and the mounting board 24.
[0046]
3 and 4, the chip antenna 23 of the antenna unit has a rectangular base 30 made of a dielectric such as a high frequency ceramic dielectric material having a relative permittivity ε of about 37, for example. A first radiation electrode 31 is formed on a first main surface 30a of the base 30, and a second radiation electrode 32 is formed on a second main surface 30b opposed to the first main surface 30a. I have. Further, a ground electrode 33 is formed in an inner layer of the base 30 located between the first radiation electrode 31 and the second radiation electrode 32.
[0047]
As shown in the drawing, the area of the first radiation electrode 31 is larger than the area of the second radiation electrode 32, and the first radiation electrode 31 emits, for example, a radio wave having a wavelength of 2.4 GHz and a second radiation electrode. The radiating electrode 32 transmits and receives, for example, radio waves having a wavelength of 5 GHz. Therefore, the present chip antenna 23 is of a multi-band type capable of transmitting and receiving radio waves in two frequency bands.
[0048]
As described above, by forming the radiation electrodes 31 and 32 on the first main surface 30a and the second main surface 30b of the base 30 facing each other to form radiation electrodes having different frequency characteristics, the mounting area efficiency is improved. It is possible to obtain a chip antenna whose mounting area is not limited.
[0049]
However, the first radiating electrode 31 and the second radiating electrode 32 are made to have the same area so that radio waves having the same frequency can be transmitted and received, and a diversity type that operates by switching one having better reception sensitivity. It may be. Further, by combining a multi-band type chip antenna and a diversity type chip antenna, more stable communication quality may be obtained for a plurality of frequency bands.
[0050]
In addition, the radiation electrodes 31 and 32 are not limited to the shapes shown in the present embodiment, but may have other various shapes. Further, the wavelength of the radio wave that can be radiated by the radiation electrodes 31 and 32 is not limited to the present embodiment.
[0051]
A first power supply line 31a is formed from one side surface of the base 30 to a first main surface 30a on which the first radiation electrode 31 is formed, and a second radiation electrode is formed from a side surface facing the first power supply line 31a. A second power supply line 32a is formed over a second main surface 30b which is a forming surface of the second power supply line 32. These feed lines 31a and 32a have gaps between their ends and the radiation electrodes 31 and 32, and are electromagnetically coupled to the radiation electrodes 31 and 32. However, they may be directly connected without providing a gap.
[0052]
The radiation electrodes 31, 32, the ground electrode 33, and the power supply lines 31a, 32a are formed by patterning a metal conductor layer such as copper or silver. Specifically, it is formed by, for example, a method of pattern printing and baking a metal paste such as silver, a method of forming a metal pattern layer by plating, a method of patterning a thin metal film by etching, and the like.
[0053]
As shown, the chip antenna 23 is mounted on a mounting board 24. The mounting substrate 24 is connected to a first power supply conductor 28a connected to the first power supply line 31a of the chip antenna 23, a second power supply conductor 28b connected to the second power supply line 32a, and a ground electrode 33. Ground conductor 28c is formed. The first power supply line 31a and the first power supply conductor 28a, the second power supply line 32a and the second power supply conductor 28b, and the ground conductor 28c connected to the ground electrode 33 are soldered and electrically connected, respectively. I have. Then, a signal from a signal source (not shown) is supplied from the first power supply line 31a to the first radiation electrode 31 via the first power supply conductor 28a, and is supplied from the second power supply line 32a to the second power supply line 32a. Power is supplied to the second radiation electrode 32 via the power supply conductor 28b.
[0054]
In the present embodiment, the first radiation electrode 31 and the second radiation electrode 32 are connected to the ground electrode 33 and the ground conductor 28c, but may be disconnected via a gap.
[0055]
As shown in detail in FIG. 4, the mounting board 24 has a mounting hole 29 penetrating from the first board surface 24a to the second board surface 24b. In the above-described chip antenna 23, the first radiation electrode 31 faces the first substrate surface 24a, and the second radiation electrode 32 faces the second substrate surface 24b, and is embedded in the mounting hole 29. Have been.
[0056]
As described above, in the antenna device according to the present embodiment, the chip is configured such that the first radiation electrode 31 faces the first substrate surface 24a and the second radiation electrode 32 faces the second substrate surface 24b. Since the antenna 23 is buried and mounted in the mounting hole 29 of the mounting substrate 24, the radio waves from the radiation electrodes 31 and 32 formed on both surfaces of the base 30 of the chip antenna 23 are radiated without being shielded. In addition, the height when the chip antenna 23 is mounted on the mounting board 24 can be suppressed.
[0057]
In addition, including the case described below, the mounting hole may be made larger than the chip antenna, and the chip antenna may be embedded in a part of the mounting hole. Further, the chip antenna may be mounted on the mounting hole so as to cover the mounting hole, instead of being embedded in the mounting hole. Also in this case, the chip antenna can be mounted so as to cover all or a part of the mounting hole.
[0058]
Here, as shown in FIGS. 5 and 6, a step portion 34 in which the second main surface 30 b side is recessed is formed over the entire width on two opposite side surfaces of the chip antenna 23, and the chip antenna 23 is connected to the step portion 34. It may be mounted in the mounting hole 29 so as to be supported by. As shown in FIGS. 7 and 8, grooves 35 are formed over the entire width on two opposing side surfaces of the chip antenna 23, and the grooves 35 are fitted to the edges of the mounting holes 29 to mount the chip antenna 23. It may be mounted in the hole 29. In this way, the chip antenna 23 can be temporarily fixed to the mounting board 24, so that the workability at the time of assembling the antenna unit is improved.
[0059]
In these cases, the step portion 34 and the groove portion 35 are formed on two side surfaces of the chip antenna 23, but may be formed only at one position, or at three or all four positions.
[0060]
As shown in FIGS. 9 and 10, an attachment groove 36a that fits into the edge of the mounting hole 29 and a flange 36b that supports the chip antenna 23 are formed. May be fitted to the mounting hole 29 while being supported by the attachment 36 disposed on the side surface of the chip antenna 23. In the illustrated case, the attachment 36 is arranged on the opposite side surface of the chip antenna 23, and the first feed line 31a and the second feed line 32a are formed on the same side surface where the attachment 36 is not arranged. The connection between the ground electrode 33 and the ground conductor 28c is made on the opposite side surface. However, the attachments 36 can be arranged at only one place or at three places. However, if the attachments 36 are arranged on the side surfaces of all four places, conduction between the chip antenna 23 and the mounting board 24 cannot be established.
[0061]
Then, as shown in FIGS. 11 and 12, a recess 37 in which the first substrate surface 24 a side is recessed is formed at two opposite edges of the mounting hole 29, and the chip antenna 23 is supported by the recess 37 and mounted. It may be mounted in the hole 29. Although the concave portions 37 are formed at two side surfaces of the edge of the mounting hole 29, they may be formed only at one position, or at three or all four positions.
[0062]
Also in this case, the chip antenna 23 can be temporarily fixed to the mounting board 24, so that workability in assembling the antenna unit is improved.
[0063]
In the above description, the mounting hole 29, which is a closed space, is formed in the mounting board 24, and the chip antenna 23 is mounted in the mounting hole 29. However, as shown in FIGS. A notch 38 which is an open space may be formed, and the chip antenna 23 may be attached to the notch 38.
[0064]
In this case, the notch 38 may be formed leaving the corner of the substantially rectangular mounting board 24 as shown in FIG. 13, and as shown in FIG. May be formed. Further, in the case shown in the figure, the chip antenna 23 is mounted on the notch 38 smaller than the chip antenna 23 so as to cover the notch 38, but the notch 38 is And the chip antenna 23 may be mounted so as to cover a part of the notch 38. Further, the chip antenna 23 may be mounted so as to be embedded in a part or the whole of the cutout part 38.
[0065]
Even when the notch 38 is provided, the same mounting structure as that of the mounting hole 29, that is, a structure having a step (see FIGS. 5 and 6) and a structure having a groove (see FIGS. 7 and 8). , A structure provided with an attachment (see FIGS. 9 and 10), and a structure formed with a concave portion (see FIGS. 11 and 12).
[0066]
Further, instead of forming the mounting hole 29 and the notch 38 as described above, as shown in FIG. 15, a region where a metal conductor such as a power supply line or a ground pattern does not exist on both the front and back surfaces and the inner layer is formed. The chip antenna 23 may be mounted on the antenna mounting area 39 by forming the antenna mounting area 39 on the mounting board 24. In this case, the chip antenna 23 may be mounted on a part of the antenna mounting area 39 as illustrated, or the chip antenna 23 may be mounted on the entire antenna mounting area 39 by making the chip antenna 23 larger than the antenna mounting area 39. Good.
[0067]
Since the metal conductor does not exist in the antenna mounting area 39 as described above, the radio wave from the chip antenna 23 is radiated from the opposite side of the antenna mounting surface without being shielded by the mounting board 24. The same advantages as when the chip antenna 23 is mounted by forming the mounting hole 29 and the notch 38 can be obtained.
[0068]
In the cases shown in FIGS. 13, 14 and 15, two chip antennas 23 are mounted, but the number of mounted chip antennas 23 is not limited to two.
[0069]
Although a PC card has been described in the present embodiment, the present invention is not limited to this. The present invention is also applicable to card-type electronic devices similar to.
[0070]
Further, in the present embodiment, the ground electrode 33 is formed in the inner layer of the base 30 located between the first radiation electrode 31 and the second radiation electrode 32. However, the present invention is not limited to this. The ground pattern on the substrate may be used as the ground electrode.
[0071]
Further, in the present embodiment, the chip antenna is mounted substantially parallel to the mounting board 24, but the present invention is not limited to this, and the chip antenna may be mounted obliquely to the mounting board, for example. Thereby, the radiation area of the radio wave emitted from the second radiation electrode formed on the second main surface of the chip antenna becomes wide, and more stable communication can be performed.
[0072]
【The invention's effect】
As is clear from the above description, according to the present invention, the following effects can be obtained.
[0073]
That is, according to the chip antenna of the present invention, the radiation electrodes having different frequency characteristics can be formed by respectively forming the radiation electrodes on the two main surfaces of the base opposing each other, so that the mounting area efficiency is good and the mounting area is small. An unlimited chip antenna is obtained.
[0074]
Further, according to the antenna unit of the present invention, the radio waves from the radiation electrodes formed on both surfaces of the base of the chip antenna can be radiated without being shielded, and the height when the chip antenna is mounted on the mounting substrate can be improved. Can be suppressed.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a wireless communication card using an antenna unit of the present invention and a personal computer having an expansion slot into which the wireless communication card is inserted.
FIG. 2 is a perspective view showing a part of the wireless communication card shown in FIG.
FIG. 3 is a perspective view showing an antenna unit according to an embodiment of the present invention provided in the wireless communication card of FIG. 2;
FIG. 4 is a sectional view taken along the line AA of FIG. 3;
FIG. 5 is a perspective view showing an antenna unit according to another embodiment of the present invention provided in the wireless communication card of FIG. 2;
FIG. 6 is a sectional view taken along line BB of FIG. 5;
FIG. 7 is a perspective view showing an antenna unit according to still another embodiment of the present invention provided in the wireless communication card of FIG. 2;
FIG. 8 is a sectional view taken along the line CC of FIG. 7;
FIG. 9 is a perspective view showing an antenna unit according to still another embodiment of the present invention provided in the wireless communication card of FIG. 2;
FIG. 10 is a sectional view taken along the line DD in FIG. 9;
FIG. 11 is a perspective view showing an antenna unit according to still another embodiment of the present invention provided in the wireless communication card of FIG. 2;
FIG. 12 is a sectional view taken along the line EE in FIG. 11;
FIG. 13 is a perspective view showing a main part of an antenna unit according to still another embodiment of the present invention.
FIG. 14 is a perspective view showing a main part of an antenna unit according to still another embodiment of the present invention.
FIG. 15 is a perspective view showing a main part of an antenna unit according to still another embodiment of the present invention.
[Explanation of symbols]
11 Personal computer
12 Body
12a keyboard
13 Display
14 PC card slot (expansion slot)
21 PC card (wireless communication card)
22 LEDs
23 chip antenna
24 Mounting board
24a First substrate surface
24b Second substrate surface
25a, 25b Shield cover
26 Resin cover
27 Connector for connection
28a first power supply conductor
28b second power supply conductor
28c ground conductor
29 mounting holes
30 Substrate
30a first main surface
30b 2nd main surface
31 First radiation electrode
31a first feeder line
32 Second radiation electrode
32a second power supply line
33 Ground electrode
34 Step
35 groove
36 Attachment
36a Attachment groove
36b flange
37 recess
38 Notch
39 Antenna mounting area

Claims (14)

A first radiation electrode formed on a first main surface of a substrate made of a dielectric,
A second radiation electrode formed on a second main surface opposite to the first main surface;
A chip antenna, comprising: a feed line for supplying a signal to the first radiation electrode and the second radiation electrode. A first radiation electrode formed on a first main surface of a base made of a dielectric, a second radiation electrode formed on a second main surface opposite to the first main surface, and A chip antenna having a feed line for supplying a signal to the first radiation electrode and the second radiation electrode;
A mounting substrate having a mounting hole formed therethrough from the first substrate surface to the second substrate surface;
The antenna unit, wherein the chip antenna is embedded in at least a part of the mounting hole or is mounted so as to cover at least a part of the mounting hole. A first radiation electrode formed on a first main surface of a base made of a dielectric, a second radiation electrode formed on a second main surface opposite to the first main surface, and A chip antenna having a feed line for supplying a signal to the first radiation electrode and the second radiation electrode;
A mounting board having a notch formed therein,
The antenna unit, wherein the chip antenna is embedded in at least a part of the notch, or is mounted so as to cover at least a part of the notch. The chip antenna includes a ground electrode formed on an inner layer of the base located between the first radiation electrode and the second radiation electrode,
The antenna unit according to claim 2, wherein the mounting substrate includes a ground conductor connected to the ground electrode. A step is formed on at least a part of the side surface of the chip antenna,
The antenna unit according to any one of claims 2 to 4, wherein the chip antenna is supported by the step portion and is mounted in the mounting hole or the cutout portion. A groove is formed on a side surface of the chip antenna,
5. The chip antenna according to claim 2, wherein the groove is fitted in an edge of the mounting hole or the notch so as to be mounted in the mounting hole or the notch. 6. An antenna unit according to the item. An attachment formed with a flange for supporting the chip antenna,
The antenna unit according to any one of claims 2 to 4, further comprising an attachment groove provided in the attachment and fitted into an edge of the mounting hole or the notch. The antenna unit according to claim 5, wherein the step portion, the groove portion, or the attachment groove is formed on two opposing side surfaces of the chip antenna. A recess is formed at an edge of the mounting hole or the notch,
The antenna unit according to any one of claims 2 to 4, wherein the chip antenna is supported by the concave portion and mounted in the mounting hole or the cutout portion. The antenna unit according to claim 9, wherein the recess is formed at two opposite edges of the mounting hole or the notch. A first radiation electrode formed on a first main surface of a base made of a dielectric, a second radiation electrode formed on a second main surface opposite to the first main surface, and A chip antenna having a feed line for supplying a signal to the first radiation electrode and the second radiation electrode;
A mounting board on which an antenna mounting area where no metal conductor is present is formed,
The antenna unit, wherein the chip antenna is mounted on at least a part of the antenna mounting area. The antenna unit according to any one of claims 2 to 11, wherein the first radiation electrode and the second radiation electrode emit radio waves having the same frequency. The antenna unit according to any one of claims 2 to 11, wherein the first radiating electrode and the second radiating electrode emit radio waves having mutually different frequencies. A wireless communication card that is removably inserted into an expansion slot of the information processing device and provides a wireless communication function to the information processing device,
A wireless device comprising the antenna unit according to any one of claims 2 to 13, and wherein the chip antenna is disposed outside the expansion slot in a state where the chip antenna is inserted into the expansion slot. Communication card.

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