JP2002064328A - Antenna device and radio communication equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antenna device and radio communication equipment capable of securing a more stabilized receiving state. SOLUTION: This device is provided with plural planar antennas 30 and 40 respectively freely supported on inserting means 21, 61, 71 and 91 by supporting means 25, 26, 64-67, 75, 76, 95 and 96. Thus, the radiation directivity of each of planar antennas 30 and 40 can be changed in a desired direction so that the more stabilized receiving state can be secured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna device and a radio communication device, and more particularly, to a radio communication PC (Personal Computer) card which is detachable from a notebook personal computer and has a radio communication function. It is.

[0002]

2. Description of the Related Art Heretofore, a personal computer (hereinafter referred to as a notebook personal computer) of a personal computer (Perso PC) has been conventionally used.
nal Computer) There is a wireless communication PC card used by inserting it into a card slot.

Here, an example of a wireless communication PC card is shown in FIG. In FIG. 14, the wireless communication PC card 1
Is composed of a main unit 2 inserted into a PC card slot of a notebook personal computer, and an antenna unit 3 protruding from the PC card slot when inserted into the PC card slot of the notebook personal computer.

The antenna unit 3 has two rod antennas 4 and 5 mounted on an upper surface 3A in a vertical direction (z-axis direction) and parallel to an end in the short direction of the antenna unit 3.

The rod antennas 4 and 5 have donut-shaped radiation characteristics around each antenna element, and the direction of the electric field is parallel to each antenna element. Accordingly, the rod antennas 4 and 5 operate as monopole antennas having a vertical electric field and almost non-directional in a horizontal plane (xy plane).

[0006] The wireless communication PC card 1 provided with the rod antennas 4 and 5 operating as described above performs a space diversity reception process on a reception signal from another wireless communication PC card 1, for example. It is sent to a type personal computer.

In the space diversity reception processing, the reception signal received at a plurality of points is used by utilizing the fact that the correlation of the reception intensity fluctuation of the reception signal between two points spatially separated by at least 1/4 wavelength is small. This is a receiving method for improving the quality of a received signal by combining or switching.

[0008]

In the wireless communication PC card having such a configuration, the quality of a received signal is improved by performing space diversity reception processing using the non-directional rod antennas 2 and 3. When a strong-level interference wave arrives, there is a problem that the quality of a received signal cannot be improved because the interference direction may affect the direction of arrival.

The present invention has been made in consideration of the above points, and has as its object to propose an antenna device and a radio communication device that can ensure a more stable reception state.

[0010]

In order to solve the above-mentioned problems, according to the present invention, a plurality of planar antennas and a plurality of planar antennas are freely supported by a supporting means with respect to an attaching means, respectively. In this case, the radiation directivity of each planar antenna can be changed.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

(1) First Embodiment In FIG. 1, reference numeral 20 denotes a wireless communication PC (Personal Computer).
er) a notebook-type personal computer (hereinafter referred to as a notebook-type personal computer) that includes a main unit 12 provided with various input units 13 and a display unit 14 attached to the main unit 12 so as to be openable and closable. ) 11 PCs
The card slot 15 (provided on the right side surface portion 12A of the main body portion 12) can be inserted and removed freely.

The wireless communication PC card 20 has a substantially flat rectangular shape as a whole, and includes an insertion portion 21 as a mounting means accommodating a circuit board (not shown) and a microstrip antenna 30 as a planar antenna. The stored first antenna section 22 and the second antenna section 23 in which a microstrip antenna 40 as a planar antenna is stored.
It is composed of

The microstrip antenna 30 in the first antenna section 22 and the microstrip antenna 40 in the second antenna section 23 are electrically connected to a circuit board in the insertion section 21, respectively.

The insertion portion 21 is provided with a connector (not shown) having a plurality of signal pins electrically connected to a circuit board at an insertion end 21AX in the longitudinal direction (y-axis direction). .

Therefore, when the wireless communication PC card 20 is inserted into the PC card slot 15 of the notebook personal computer 11, the connector of the wireless communication PC card 20 and the PC
A connector (not shown) in the card slot 15 is electrically connected, so that, for example, received data transmitted from another wireless communication PC card 20 is taken into the circuit board via the microstrip antennas 30 and 40. ,
After performing predetermined reception processing such as directional diversity reception (angle diversity reception) processing on the received data on the circuit board, the notebook personal computer 11 is connected via each connector.
To send to.

In the directional diversity reception process, a reception method for improving the quality of received data by using a plurality of antennas having different directivities and combining or switching received waves whose arrival directions fluctuate is used. is there.

In this manner, the wireless communication PC card 20
Is configured to be able to receive received data transmitted from another wireless communication PC card 20.

When transmitting the transmission data given from the notebook personal computer 11 to another wireless communication PC card 20, the wireless communication PC card 20 takes the transmission data into a circuit board and transmits the transmission data to the circuit board. After performing a predetermined transmission process on the data, the data is transmitted via the microstrip antennas 30 and 40.

In addition to this configuration, in the wireless communication PC card 20, as shown in FIG. 2, a recess 21B is formed at one end of the insertion portion 21, and the recess 21B is formed at one end of the first antenna portion 22. A corresponding convex portion 22B is formed, and the concave portion 21B is pivotally supported by the convex portion 22B so as to form a hinge portion 25 as support means.

Similarly, the wireless communication PC card 20
Then, the concave portion 2B is provided at the other end of the convex portion 22B of the first antenna portion 22.
2C is formed, and a convex portion 23B corresponding to the concave portion 22C is formed at one end of the second antenna portion 23, and the concave portion 22C is pivotally supported by the convex portion 23B so as to be rotatable. A hinge 26 is configured.

Thus, the wireless communication PC card 20 is
As shown in FIG. 3, the hinge portion 25 allows the first antenna portion 22 to rotate in the direction of the arrow a or b with respect to the insertion portion 21, and the hinge portion 26 allows the first antenna portion 22 to rotate.
3 can rotate in the direction of arrow c or d with respect to the first antenna unit 22.

The hinge 25 can only hold the stop position when the projection 22B of the first antenna 22 is stopped at a predetermined angle by rotating the projection 22B with respect to the recess 21B of the insertion section 21. It is pivoted to have a frictional force of.

Similarly, when the projection 23B of the second antenna 23 is turned at a predetermined angle with respect to the recess 22C of the first antenna 22, the hinge 26 is positioned at the stop position. Is pivoted to have a frictional force sufficient to hold

Thus, in the wireless communication PC card 20, the first antenna section 22 can be held at a desired angle with respect to the insertion section 21 by the hinge section 25, and the first antenna section can be held by the hinge section 26. The second antenna unit 23 can be held at a desired angle with respect to the antenna unit 22.

Incidentally, the microstrip antenna 3
Reference numeral 0 denotes a ground conductor (ground plate) 31, a dielectric 32, and a radiation conductor 33, as shown in FIG. 4, and a center conductor 55A of a feeder line 55 (FIG. 2) supplied from a circuit board.
Are electrically connected to the radiation conductor 33, and the outer conductor 55B is electrically connected to the ground conductor 31.

Here, the microstrip antenna 30
Of the radiation conductor 33 and the center conductor 55
The position of the power supply point 35 is selected at a position where the impedance of the power supply line 55 can be matched because the power supply point 35 changes depending on the position of the power supply point 35 which is a connection point with A.

In practice, the position of the feeding point 35 is
Of the radiation conductor 33 and the center of the radiation conductor 33 and the length (d) of the radiation conductor 33
3 is selected near one end in the short direction, so that the impedance of the feeder line 55 can be matched with 50Ω. Incidentally, the length (d) of the radiation conductor 33 is
It is a 1 / 2λ _e. Here, λ _e is the wavelength in the dielectric 32.

The power supply line 55 (FIG. 2) is made flexible so as not to affect the turning operation of the first antenna unit 22, and even when the first antenna unit 22 is turned. The impedance of the feed line 55 is maintained at 50Ω.

Thus, the microstrip antenna 3
0 always has the radiation directivity of the ground conductor 31 in the vertical direction.

The microstrip antenna 40
Has the same configuration as the microstrip antenna 30 described above with reference to FIG. Accordingly, the position of the feed point 35 of the microstrip antenna 40 is also changed to the feed line 56 (FIG. 2).
Is matched with 50Ω, which is the impedance of

The power supply line 56 has flexibility like the power supply line 55 so as not to affect the turning operation of the second antenna unit 23.
Is rotated, the impedance of the feeder line 56 is maintained at 50Ω.

Thus, the microstrip antenna 4
0 always has the radiation directivity of the ground conductor 31 in the vertical direction.

As described above, the wireless communication PC card 20 is
In the electrical connection between the circuit board and the microstrip antennas 30 and 40, good electrical characteristics can always be maintained.

Thus, the wireless communication PC card 2
0, the electrical characteristics of the circuit board and the microstrip antennas 30 and 40 are always kept good when the notebook PC is inserted into the PC slot 15 of the notebook personal computer 11, and the first antenna section 22 is The antenna may be rotated in a desired direction, or the second antenna 23 may be
Is rotated in a desired direction, the first antenna unit 22 and the second antenna unit 23 can be held at the rotated angles.

In this case, the microstrip antenna 3 always has radiation directivity in the vertical direction of the ground conductor 31.
0 and 40 mean that the PC card 20 for wireless communication at that time has the first antenna unit 22 and the second antenna unit 23
Is changed to the directivity direction corresponding to the angle at which is held.

That is, as shown in FIG. 5, the wireless communication PC card 20 inserted into the PC slot 15 of the notebook personal computer 11 has a first antenna section 22 and a second antenna section 23 with respect to the insertion section 21. Not rotated (insertion part 2
0 ° to 1), the microstrip antenna 3
Vertical direction at 0 and 40 (z-axis direction shown in FIG. 1)
(FIG. 5A).

In the wireless communication PC card 20, the first antenna section 22 is rotated upward by 90 ° with respect to the insertion section 21, and the second antenna section 23 is connected to the first antenna section 2.
2, the microstrip antenna 30 has a radiation directivity toward the notebook personal computer 11 (y'-axis direction shown in FIG. 1) and a microstrip antenna 40. Has a radiation directivity in the vertical direction (the z-axis direction shown in FIG. 1) (FIG. 5B).

In the wireless communication PC card 20, the first antenna section 22 is rotated upward by 90 ° with respect to the insertion section 21, and the second antenna section 23 is
When the microstrip antenna 30 is rotated by about 135 ° in the opposite direction to the rotation direction of the microstrip antenna 30, the microstrip antenna 30 has a radiation directivity toward the notebook computer 11 (y′-axis direction shown in FIG. 1), and 40 has a radiation directivity that is opposite and obliquely upward (the yz-axis direction shown in FIG. 1) with respect to the notebook computer 11 (FIG. 5C).

The wireless communication PC card 20 has a structure in which the first antenna section 22 is approximately 45
When the second antenna unit 23 is rotated by 90 ° in the direction opposite to the rotation direction of the first antenna unit 22 while being rotated by 90 °, the microstrip antenna 30 is obliquely upward in the notebook PC 11 side (shown in FIG. 1). The microstrip antenna 40 has a radiation directivity that is opposite to the notebook computer 11 and that is obliquely upward (in the yz-axis direction shown in FIG. 1) (in the yz-axis direction). (FIG. 5 (D)).

Further, the wireless communication PC card 20 has the first
The antenna section 22 is upwardly moved by about 3 with respect to the insertion section 21.
When the second antenna unit 23 is rotated by approximately 120 ° in a direction opposite to the rotation direction of the first antenna unit 22 while being rotated by 0 °, the microstrip antenna 30 is obliquely upward in the notebook PC 11 side (FIG. 1). Y 'shown in
(in the z-axis direction), and the notebook personal computer 11
Has a radiation directivity in the opposite direction (the y-axis direction shown in FIG. 1) (FIG. 5E).

As described above, the wireless communication PC card 20
By holding the first antenna section 22 at a desired angle with respect to the insertion section 21 and holding the second antenna section 23 at a desired angle with respect to the first antenna section 22, the microstrip antennas 30 and 40 The direction of radiation directivity can be changed.

In the above configuration, the wireless communication PC card 20 is configured such that the first antenna section 22 is vertically moved with respect to the insertion section 21 by the hinge section 25 as a support means (FIG. 1).
(Y-y 'direction shown in FIG. 3), the rotation position is maintained.

The wireless communication PC card 20 is connected to the first antenna section 22 by a hinge section 26 as a support means.
The second antenna unit 23 moves vertically (y shown in FIG. 1).
(−y ′ direction), it is held at that rotational position.

Therefore, in the wireless communication PC card 20,
The first antenna unit 22 and the second antenna unit 23 that house the microstrip antennas 30 and 40, respectively, which always have radiation directivity in the vertical direction with respect to the ground conductor 31, respectively have predetermined rotation positions (angles). ), The radiation directivity of the microstrip antennas 30 and 40 is changed to a directivity direction to an angle corresponding to the rotational position held at that time.

As described above, in the wireless communication PC card 20, the first antenna unit 22 and the second antenna unit 23, which are respectively rotated in the vertical direction (the yy 'direction shown in FIG. 1).
By holding them in a rotated position,
The radiation direction of the microstrip antennas 30 and 40 can be changed to a predetermined direction.

As a result, in the wireless communication PC card 20 for performing directional diversity reception, when a strong level of interfering wave is arriving, the first antenna unit 22 and the second antenna unit 23 are respectively held at desired rotational positions. By doing so, the radiation directivity of the microstrip antennas 30 and 40 can be directed in a direction that can avoid the arrival direction of the interfering wave.

Further, by using the microstrip antennas 30 and 40, the wireless communication PC card 20 can be downsized compared to the conventional rod antenna, and has a radiation directivity in a movable range as small as possible. It can be directed in a desired direction.

According to the above configuration, the hinge portions 25 and 2
6 supports the radiation directions of the microstrip antennas 30 and 40 so that they can be directed to desired directions, respectively, so that even when a strong level of interfering wave arrives, the direction of arrival can be avoided. It can be directed in the direction, and thus a more stable reception state can be ensured.

Further, the microstrip antenna 30
By using the antennas 40 and 40, the size can be reduced as compared with the conventional rod antenna, and the radiation directivity can be directed in a desired direction within a movable range as small as possible.

In the first embodiment described above,
The case where the first antenna unit 22 is rotatably supported by the hinge unit 25 as the support unit and the second antenna unit 23 is rotatably supported by the hinge unit 26 as the support unit has been described. The present invention is not limited to this, and in FIG. 6 in which the same reference numerals are assigned to the corresponding portions in FIG. 2, the insertion portion 61 and the first antenna portion 62 are connected via connecting portions 64 and 65 as support means. The first antenna portion 62 is rotatably connected to the insertion portion 61.
Is rotatably supported, and the first antenna unit 62 and
The second antenna section 63 may be rotatably connected to the second antenna section 63 via the connecting sections 66 and 67, whereby the second antenna section 23 may be rotatably supported with respect to the first antenna section 22.

In this case, the wireless communication PC card 60
In FIG. 3, it is possible to secure a rotation state that is much larger than the rotation state of the first antenna unit 22 and the second antenna unit 23 described above.

That is, as shown in FIG. 7, the wireless communication PC card 60 rotates the first antenna section 62 and the second antenna section 63 and inserts the first antenna section 62 and the second antenna section 63 into the insertion section 61. (FIG. 7A). The wireless communication PC card 60
Rotates the second antenna section 63 in a state where the first antenna section 62 is rotated and the first antenna section 62 is superimposed on the surface of the insertion section 61, and the second antenna section 63 is moved to the first
It can be superimposed on the surface of the antenna section 62 (FIG. 7B).

Thus, the wireless communication PC card 60 is
It is possible to secure a state that is easy to carry for the user.

As described above, the components (the insertion portion 61, the first antenna portion 62, and the second antenna portion 63) are rotatably connected via the connecting portions 64-67 as supporting means. In this way, the rotation state can be further increased, and thus the portability can be improved by folding down the longitudinal dimension.

(2) Second Embodiment In FIG. 8, in which parts corresponding to those in FIG. 2 are assigned the same reference numerals, in a wireless communication PC card 70, a connector 71AX of an insertion portion 71 having a flat rectangular shape is used. A pin 71B is provided on the opposite side and near the front side along the longitudinal direction, and a pin hole 72B is provided at one end of the first antenna section 72 at a position corresponding to the pin 71B.
B is rotatably supported by the pin hole 72B to form a hinge portion 75 as a support means.

Similarly, the wireless communication PC card 70
A pin 72C is provided in the vicinity of the other end of the pin hole 72B of the first antenna portion 72 in the same position as the pin hole 72B and along the longitudinal direction.
3 has a pin hole 7 at a position corresponding to the pin 72C.
3B is provided, and a pin 72C is rotatably supported by the pin hole 73B to form a hinge 76 as a support means.

Thus, the wireless communication PC card 70 is
As shown in FIG. 9, the hinge portions 75 and 76 allow the first antenna portion 72 and the second antenna portion 73 to rotate in the direction of arrow e.

The hinge portion 75 pivots so that when the first antenna portion 72 is rotated with respect to the insertion portion 71 and stopped at a predetermined angle, the hinge portion 75 has a frictional force enough to hold the stopped position. Supported.

Similarly, when the second antenna portion 73 is rotated with respect to the first antenna portion 72 and stopped at a predetermined angle, the hinge portion 76 has friction enough to hold the stopped position. It is pivoted to have power.

Thus, in the wireless communication PC card 70, the first antenna portion 72 can be held at a desired angle with respect to the insertion portion 71 by the hinge portion 75, and the first antenna portion 72 is held by the hinge portion 76. The second antenna unit 73 can be held at a desired angle with respect to the antenna unit 72.

The wireless communication PC card 70 can always maintain good electrical characteristics in the electrical connection between the circuit board and the microstrip antennas 30 and 40 in the same manner as in the first embodiment. Has been made.

Thus, the wireless communication PC card 7
0, the electric characteristics of the circuit board and the microstrip antennas 30 and 40 are always kept good when the personal computer is inserted into the PC slot 15 of the notebook personal computer 11, and the first antenna unit 72 and the second antenna unit 73 When rotated in desired directions, the first antenna unit 72 and the second antenna unit 73 can be held at the rotated angles.

In this case, the microstrip antenna 3 always having the radiation directivity in the vertical direction of the ground conductor 31
0 and 40 mean that the PC card 70 for wireless communication at that time has the first antenna unit 72 and the second antenna unit 73
Is changed to the directivity direction corresponding to the angle at which

That is, as shown in FIG. 10, the wireless communication PC card 70 inserted into the PC slot 15 of the notebook personal computer 11 has a first antenna section 72 and a second antenna section 73 with respect to the insertion section 71. When not rotated (0 ° with respect to the insertion section 71), the microstrip antennas 30 and 40 have radiation directivity in the vertical direction (the z-axis direction shown in FIG. 1) (FIG. 10A).

In the wireless communication PC card 70, only the first antenna section 72 is 90 ° upward with respect to the insertion section 71.
When rotated, the microstrip antenna 30 has a radiation directivity in the direction opposite to the display unit 14 of the notebook computer 11 (x-axis direction shown in FIG. 1), and the microstrip antenna 40 has a vertical direction (see FIG. 1). 1 (in the z-axis direction) (FIG. 10B).

In the wireless communication PC card 70, the first antenna section 72 is rotated upward by 180 ° with respect to the insertion section 71, and the second antenna section 73 is moved approximately in the same direction as the first antenna section 72. When rotated by 45 °, the microstrip antenna 30 has radiation directivity in the downward direction (the z′-axis direction shown in FIG. 1), and the microstrip antenna 40 has the notebook PC 1.
1 and obliquely upward (xz shown in FIG. 1).
(In the axial direction) (FIG. 10C).

As described above, the wireless communication PC card 70
By holding the first antenna portion 72 at a desired angle with respect to the insertion portion 71 and holding the second antenna portion 73 at a desired angle with respect to the first antenna portion 72, the microstrip antennas 30 and 40 The direction of radiation directivity can be changed.

In the above configuration, the wireless communication PC card 70 has the first antenna section 72 in the left-right direction with respect to the insertion section 71 by the hinge section 75 as a support means (FIG. 1).
(In the xx 'direction shown in FIG. 3), the rotation position is maintained.

The wireless communication PC card 70 is connected to the first antenna 72 by a hinge 76 serving as support means.
The second antenna unit 73 moves in the left-right direction (x shown in FIG.
When rotated in the -x 'direction), it is held at the rotated position.

Therefore, in the wireless communication PC card 70,
The first antenna unit 72 and the second antenna unit 73 accommodating the microstrip antennas 30 and 40, which always have radiation directivity in the vertical direction with respect to the ground conductor 31, respectively have predetermined rotation positions (angles). ), The radiation directivity of the microstrip antennas 30 and 40 is changed to a directivity direction to an angle corresponding to the rotational position held at that time.

As described above, in the wireless communication PC card 70, the first antenna unit 72 and the second antenna unit 73 rotated in the left-right direction (the xx 'direction shown in FIG. 1), respectively.
Of the microstrip antennas 30 and 40 can be changed to a predetermined direction by holding the microstrip at an angle corresponding to the rotational position.

Thus, in the wireless communication PC card 70 for performing directional diversity reception, when a strong level of interfering wave arrives, the first antenna unit 72 and the second antenna unit 73 are held at desired angles, respectively. Thereby, the radiation directivity of the microstrip antennas 30 and 40 can be directed in a direction that can avoid the arrival direction of the interference wave.

Further, since the wireless communication PC card 70 uses the microstrip antennas 30 and 40, it is possible to achieve a reduction in size as compared with a conventional rod antenna, and to achieve radiation directivity in a movable range as small as possible. It can be directed in a desired direction.

According to the above configuration, the hinge portions 75 and 7
6 supports the radiation directions of the microstrip antennas 30 and 40 so that they can be directed to desired directions, respectively, so that even when a strong level of interfering wave arrives, the direction of arrival can be avoided. It can be directed in the direction, and thus a more stable reception state can be ensured.

Further, the microstrip antenna 30
By using the antennas 40 and 40, the size can be reduced as compared with the conventional rod antenna, and the radiation directivity can be directed in a desired direction within a movable range as small as possible.

In the above-described second embodiment,
The case where the hinge 75 and the hinge 76 serving as the support means in the first antenna are arranged at the same position has been described. However, the present invention is not limited to this, and the structure of the hinge 75 and the hinge 76 is not limited thereto. The positions do not have to be the same.

In FIG. 11, in which parts corresponding to those in FIG. 8 are assigned the same reference numerals, in the wireless communication PC card 80, the hinge part 75 is inserted into the insertion part 71 and the first antenna part 72.
And a hinge 76 is provided on the diagonal side of the hinge 75 in the first antenna 72.

In this case, the wireless communication PC card 80
By being able to rotate the second antenna section 73 by 360 °,
The microstrip antenna 40 described above with reference to FIG.
The rotation state much larger than the rotation state (180 °) can be secured.

That is, the wireless communication PC card 80 is
As shown in FIG. 12, the first antenna unit 72 is
Is rotated upward by 90 °, and the second antenna portion 73 is rotated 180 ° in the opposite direction to the first antenna portion 72.
When the microstrip antenna 30 is rotated (180 ° in the same direction as the first antenna unit 72), the radiation directivity of the microstrip antenna 30 in the direction opposite to the display unit 14 of the notebook computer 11 (x-axis direction shown in FIG. 1) is reduced. And the notebook PC 11 in the microstrip antenna 40.
(See FIG. 12A) in the direction of the display unit 14 (x'-axis direction shown in FIG. 1).

In the wireless communication PC card 80, the first antenna section 72 is rotated upward by 90 ° with respect to the insertion section 71, and the second antenna section 73 is connected to the first antenna section 7.
When the microstrip antenna 30 is rotated by 270 ° (90 ° in the same direction as the first antenna unit 72) in the direction opposite to the direction 2, the direction opposite to the display unit 14 of the notebook computer 11 (the x-axis direction shown in FIG. ), And the microstrip antenna 40 has a radiation directivity in a downward direction (z'-axis direction shown in FIG. 1) (FIG. 12B).

Further, the PC card 80 for wireless communication is
The antenna unit 72 is rotated upward by 90 ° with respect to the insertion unit 71, and the second antenna unit 73 is rotated approximately 45 ° in the same direction as the first antenna unit 72 (315 ° in the opposite direction to the first antenna unit 72). 1) When rotated, the microstrip antenna 30 has radiation directivity in the opposite direction (the x-axis direction shown in FIG. 1) to the display unit 14 of the notebook personal computer 11, and the microstrip antenna 40 has a notebook personal computer. 11 and has a radiation directivity in a diagonally downward direction (xz'-axis direction shown in FIG. 1) opposite to the display unit 14 (FIG. 12C).

As described above, the hinge part 75 is formed at a position near the insertion part 71 and the near side of the first antenna part 72, and the hinge part 76 is provided on the diagonal side of the hinge part 75 in the first antenna part 72. By doing so, a much larger rotation state can be ensured, and thus a more stable reception state can be ensured.

(3) Other Embodiments In the above-described embodiment, the case where the microstrip antennas 30 and 40 are used as planar antennas has been described. However, the present invention is not limited to this. Various other planar antennas such as an F-type antenna may be used, and different planar antennas may be housed in the first antenna unit and the second antenna unit.

In the above-described embodiment, the first and second antenna portions 22 and 72, and the first and second antenna portions 72 and 72 are provided by the hinge portions 25 and 26 and the hinge portions 75 and 76 as support means. Although the description has been given of the case where each of the two antenna portions 73 is rotatably supported, the present invention is not limited to this, and in FIG. 13 in which portions corresponding to those in FIG. 2 or FIG. The first antenna unit 92 and the second antenna unit 93 are rotatably supported by ball joints 95 and 96 serving as support means for the first antenna unit 92 and the second antenna unit 93, respectively. You may do it.

In this case, the wireless communication PC card 90
The first antenna unit 92 and the second antenna unit 93 are moved up and down according to the above-described first embodiment (FIG. 1: y-
y ′) and the left and right rotation directions (the xx ′ direction in FIG. 1) according to the above-described second embodiment, and thus can be rotated in FIG. 4 or FIG. A larger rotation range than the rotation range of the microstrip antennas 30 and 40 can be secured.

Further, in the above embodiment, the PC
The first antenna unit 22 and the second antenna unit 23 or the first antenna unit 7 in the insertion direction into the card slot 15
Although the case where the second and second antenna units 73 are arranged in series has been described, the present invention is not limited to this, and the first antenna unit and the second antenna unit are respectively parallel to the insertion direction into the PC card slot 15. May be arranged at

Further, in the above-described embodiment, a case has been described where the widths of the insertion portions 21 and 71 are the same as the widths of the first antenna portions 22 and 72 and the second antenna portions 23 and 73, respectively. However, the present invention is not limited to this, and the widths of the first antenna unit and the second antenna unit with respect to the insertion unit may not be the same.

Further, in the above-described embodiment, the first
The case where the shape and size of the antenna unit 22 and the second antenna unit 23 are substantially the same, and the shape and size of the first antenna unit 72 and the second antenna unit 73 are the same has been described. However, the shape and size of the first antenna unit and the second antenna unit do not have to be the same.

Further, in the above-described embodiment, the case has been described where the wireless communication PC cards 20 and 70 as wireless communication devices perform wireless communication with another wireless communication PC card. The invention is not limited thereto, and wireless communication may be performed with various communication targets.

Further, in the above-described embodiment, a case has been described where the wireless communication PC cards 20 and 70 as wireless communication devices perform directional diversity reception via the microstrip antennas 30 and 40 as planar antennas. The present invention is not limited to this, and wireless communication PC cards 20 and 70 as wireless communication devices may perform polarization diversity reception via microstrip antennas 30 and 40 as planar antennas.

[0091]

As described above, according to the present invention, the plurality of planar antennas and the plurality of planar antennas are freely supported by the supporting means with respect to the attaching means, so that each planar antenna can be moved in a desired direction. The radiation directivity of the antenna can be changed, and thus a more stable reception state can be ensured.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a configuration of a wireless communication PC card according to the present invention.

FIG. 2 is a schematic perspective view showing a structure of a wireless communication PC card according to the first embodiment.

FIG. 3 is a schematic side view showing a rotating state of an antenna unit.

FIG. 4 is a schematic perspective view showing the structure of a microstrip antenna.

FIG. 5 is a schematic side view showing an example of a radiation directivity changing pattern.

FIG. 6 is a schematic perspective view showing a structure of a wireless communication PC card according to another embodiment.

FIG. 7 is a schematic side view showing an example of folding at the time of carrying.

FIG. 8 is a schematic perspective view showing a structure of a wireless communication PC card according to a second embodiment.

FIG. 9 is a schematic side view showing a rotating state of the antenna unit.

FIG. 10 is a schematic side view showing an example of a radiation directivity changing pattern.

FIG. 11 is a schematic perspective view showing the structure of a wireless communication PC card according to another embodiment.

FIG. 12 is a schematic side view showing an example of a radiation directivity changing pattern.

FIG. 13 is a schematic perspective view showing a structure of a wireless communication PC card according to another embodiment.

FIG. 14 is a schematic perspective view showing the structure of a conventional wireless communication PC card.

[Explanation of symbols]

11: notebook personal computer, 15: P
C card slot, 20, 60, 70, 80, 90 ...
PC card for wireless communication, 21, 61, 71, 91... Insertion section, 22, 62, 72, 92.
3, 63, 73, 93 ... second antenna section, 25, 2
6, 75, 76 ... hinge part, 30, 40 ... microstrip antenna, 64, 65, 66, 67 ... connecting part, 95, 96 ... ball joint.

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) H01Q 3/24 H04B 7/10 A H04B 7/08 G06F 1/00 312M 7/10 G06K 19/00 H 7/26 H04B 7/26 DF term (reference) 5B035 AA00 BA01 BB09 BC00 CA01 CA23 5J021 AA02 AA11 AB06 DA05 EA01 GA02 HA05 HA06 5J047 AA04 AB13 BF10 5K059 AA12 BB01 CC03 CC04 DD01 DD31 EE02 5K067 AA02 BB21 CCA

Claims (5)

[Claims] An antenna device of a wireless communication device which is used by being inserted into a predetermined insertion target via an insertion means and performs wireless communication with a predetermined communication target, comprising: a plurality of planar antennas; An antenna device, comprising: a support means for freely supporting each of the plurality of planar antennas with respect to the insertion means. 2. The antenna device according to claim 1, wherein said support means is a ball joint. 3. A wireless communication device which is used by being inserted into a predetermined insertion target via an insertion means and performs wireless communication with a predetermined communication target. A wireless communication apparatus comprising: attaching means; a plurality of planar antennas; and supporting means for freely supporting the plurality of planar antennas with respect to the inserting means. 4. The wireless communication device according to claim 1, wherein said support means is a ball joint. 5. The wireless communication device according to claim 1, wherein the wireless communication device has a substantially flat rectangular shape.