JP2008301364A - Antenna system, and wireless apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antenna system and wireless apparatus in which radio signal communication quality can be improved by a diversity scheme even when a whip antenna that can be drawn or housed is being housed. <P>SOLUTION: An antenna system is an antenna system, for performing radio communication according to a diversity scheme, comprising: a first antenna element that can be drawn out of a case or can be housed within the case; and a second antenna element to be used for transmitting or receiving a plurality of radio signals in polarization directions different from each other. The first antenna element includes a first feed point and the second antenna element includes a second feed point and a third feed point. When the first antenna element is housed, the first antenna element is contacted with the third feed point and when the first antenna element is drawn, the first antenna element is not connected with the third feed point. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention includes a first antenna element that can be pulled out of or stored in a casing, a second antenna element that is used for transmitting or receiving a plurality of radio signals having different polarization directions, and a first antenna element. The present invention relates to an antenna device provided in a wireless device that includes a first power supply unit to be connected and a second power supply unit to be connected to a second antenna element, and performs wireless communication by a diversity method. The present invention also relates to a wireless device that performs wireless communication using such an antenna device.

  2. Description of the Related Art Conventionally, for example, a wireless device including a whip antenna that can be pulled out of the casing or accommodated in the casing and a patch antenna provided inside the casing is known (see, for example, Patent Document 1). ).

In addition, the wireless device includes a power feeding unit that feeds power to a feeding point provided in the whip antenna, and a power feeding unit that feeds power to the feeding point provided in the patch antenna. With such a configuration, the wireless device described above can transmit and receive wireless signals to and from the other party by a diversity method using the whip antenna and the patch antenna, so that the communication quality of the wireless signal can be improved.
Utility Model Registration No. 2502262

  By the way, since the whip antenna can greatly improve the communication quality of the radio signal when pulled out than when stored, it is desired to pull the whip antenna out of the housing.

  However, when the user of the wireless device pulls out the whip antenna, the wireless device is often housed and used because the appearance of the wireless device is deteriorated. In such a case, since the whip antenna is covered by the housing, the communication quality of the radio signal transmitted and received via the whip antenna is greatly deteriorated in the wireless device.

  Therefore, in the wireless device described above, when the whip antenna is housed, the communication quality is not different from the case where the wireless signal is transmitted and received by the single method using only the patch antenna. In other words, the above-described radio apparatus has a problem that communication quality cannot be improved by the diversity method when the whip antenna is accommodated even though the function of transmitting and receiving radio signals by the diversity method is provided. It was.

  Therefore, the present invention has been made in view of the above points, and an antenna device capable of improving the communication quality of a radio signal by a diversity method even when a whip antenna is housed, and such an antenna device. An object of the present invention is to provide a wireless device that performs wireless communication using an antenna device.

  An antenna apparatus according to the present invention includes a first antenna element that can be pulled out of or stored in a casing, and a second antenna element that is used for transmitting or receiving a plurality of radio signals having different polarization directions. An antenna apparatus for performing wireless communication according to a method, wherein the first antenna element has a first feeding point, the second antenna element has a second feeding point and a third feeding point, The first antenna element is connected to the third feeding point when the first antenna element is housed, and the first antenna element is not connected to the third feeding point when the first antenna element is pulled out. Features.

  According to such an antenna device, when the first antenna element (for example, a whip antenna) is pulled out, the first antenna element is used to transmit and receive the first polarized wave, and the second antenna element (for example, a patch antenna or a loop antenna). ) Can be used to transmit and receive the second polarization. When the first antenna element is stored, the second antenna element is used to transmit and receive the second polarized wave, and the feeding circuit feeds power to the second antenna element (its third feeding point) via the first antenna element. By doing so, transmission and reception of the first polarization can be performed. According to such an antenna device, even when the first antenna element is housed, wireless communication is performed by the diversity method (polarization diversity), and the communication quality of the wireless signal transmitted and received with the other party is improved. can do.

  In addition to the above features, the present invention provides a straight line connecting the second feeding point and the center of the second antenna element, and a straight line connecting the third feeding point and the center of the second antenna element. It may be configured to be orthogonal. Thereby, in the antenna device, when the first antenna element is housed, in each of the first feeding unit and the second feeding unit, it is possible to transmit or receive radio signals whose polarization directions are orthogonal. Communication quality using the diversity method can be further improved.

  The second antenna element is, for example, a patch antenna made of a flat conductor.

  The antenna device may further include a conductor tube made of a grounded conductor, and the first antenna element may be housed inside the conductor tube when housed. Thus, in the antenna device, when the first antenna element is housed, an excess radio signal that becomes noise is prevented from being transmitted and received by the first antenna element. Power can be supplied stably.

  A radio apparatus according to the present invention is a radio apparatus that performs radio communication by a diversity method, and transmits a plurality of radio signals having different polarization directions from a first antenna element that can be pulled out of the casing or housed in the casing. Alternatively, it includes a second antenna element used for reception and first and second feeding parts, the first antenna element has a first feeding point, and the second antenna element is located with respect to the center of the antenna element. The second feeding point and the third feeding point are provided in different directions. When the first antenna element is pulled out, the first feeding unit feeds power to the first feeding point, and the second feeding unit is second or When feeding the third feeding point and storing the first antenna element, the first antenna element is connected to the third feeding point, so that the first feeding part is connected via the first feeding point and the first antenna element. While supplying power to the third feeding point, Feeding portion, characterized in that the feeding to the second feed point.

  According to the present invention, even when a whip antenna that can be pulled out or stored is stored, an antenna device and a wireless device that can improve communication quality of a radio signal by a diversity method are provided. Can do.

(Configuration of Radio Device According to First Embodiment of the Present Invention)
A first embodiment of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic. First, the configuration of the wireless device 1 according to the first embodiment of the present invention will be described. Hereinafter, portions related to the present invention will be mainly described. Accordingly, the wireless device 1 includes other devices (signal processing circuit, power supply unit, operation unit, etc.) that are not shown or omitted in the description, which are essential for realizing a function as a wireless device that transmits and receives a wireless signal. Please note that there is. Note that the wireless device 1 according to the present embodiment is assumed to be a television, a radio, a mobile phone, a PDA, or the like.

  The wireless device 1 receives or transmits a wireless signal by a diversity method. Specifically, as shown in FIGS. 1A to 1B, the wireless device 1 according to the present embodiment includes a housing 100 and a whip that can be pulled out of the housing 100 or stored in the housing 100. The antenna A1, the patch antenna A2 provided on the substrate 50, the power feeding unit K1, the power feeding unit K2, the connection unit 10, and the connection unit 20 are provided.

  Here, FIG. 1A shows the configuration of the wireless device 1 when the whip antenna A1 is pulled out of the housing 100, and FIG. 1B shows the whip antenna A1. A configuration of the wireless device 1 when stored in the body 100 is shown. In the wireless device 1, the whip antenna A <b> 1 is pulled out and stored by the user of the wireless device 1.

  Whip antenna A1 is formed of a conductor. Whip antenna A1 has a feeding point Kp1 (first feeding point). In addition, the feeding point Kp1 and the feeding unit K1 are connected via the connection unit 10. In addition, as shown in FIG. 2A, when the whip antenna A1 is pulled out, it is fed with a connection point with the feeding unit K1 as a feeding point Kp1. Here, in the present embodiment, the feeding units K1 to K2 are electrically connected to the feeding points Kp1 of the whip antenna A1 and the feeding points Kp2 to Kp3 (described later) of the patch antenna A2. Will be described.

  Further, as shown in FIG. 2B, the whip antenna A <b> 1 is connected to the connection unit 20 when stored. Also at this time, the whip antenna A1 is connected to the power feeding unit K1 via the connection unit 10. In the present embodiment, the whip antenna A1 constitutes a first antenna element.

  The connection unit 20 is connected to the feed point Kp3 of the patch antenna A2 via the feed line L. Moreover, the connection part 20 connects with the whip antenna A1, when the whip antenna A1 is accommodated. That is, when the whip antenna A1 is housed, the power feeding unit K1, the connection unit 10, the whip antenna A1, the connection unit 20, the power feeding line L, and the power feeding point Kp3 are electrically connected.

  The patch antenna A2 is provided inside the wireless device 1. The patch antenna A2 is made of a conductor provided along a predetermined plane, and is used for transmitting or receiving a plurality of radio signals having different polarization directions. Specifically, the patch antenna A2 is configured by a flat conductor. In the present embodiment, the patch antenna A2 is formed of a square flat plate conductor. Further, the electrical length of one side of the flat plate is set to a half of the wavelength (half wavelength) based on the use frequency of the radio signal transmitted and received.

  Here, FIGS. 2A to 2B show a specific configuration of the patch antenna A2 according to the present embodiment. As shown in FIG. 2A, the patch antenna A2 has a feeding point (second feeding point) Kp2 and a feeding point (third feeding point) Kp3. The patch antenna A2 is configured such that a straight line connecting the feeding point Kp2 and the center C of the patch antenna A2 and a straight line connecting the feeding point Kp3 and the center C of the patch antenna A2 are orthogonal to each other. That is, as shown in FIG. 2A, the feeding points Kp2 to Kp3 are provided so that the angle α is about 90 °. With this configuration, the patch antenna A2 is fed at the feeding point Kp2 to transmit or receive a radio signal whose polarization direction corresponds to the vertical direction DV. At the feeding point Kp3, the polarization direction is the horizontal direction DH. Power is supplied to transmit or receive a radio signal corresponding to.

  Further, FIG. 2B shows an XX cross-sectional view of the patch antenna A2 shown in FIG. As shown in FIG. 2B, the patch antenna A <b> 2 is provided on the substrate 50. The substrate 50 is provided with a ground plane GF (ground plane) of copper foil or the like on the opposite surface where the patch antenna A2 is provided. The board 50 is provided with a hole H, and the feed point Kp3 of the patch antenna A2 is connected to the feed line L passing through the hole H from the back side of the board 50. At this time, the feeder line L is disposed so as not to contact the ground plane GF of the substrate 50. With this configuration, the feed point Kp3, the feed line L, and the connection unit 20 are electrically connected. The feeding point Kp2 of the patch antenna A2 is connected to the feeding unit K2 through a feeding line that passes through another hole (not shown) provided in the substrate 50.

  Here, in the patch antenna A2, the feed points Kp2 to Kp3 are arranged in consideration of the impedance value. Specifically, the arrangement of the feeding point Kp3 will be described with an example. For example, when the impedance value from the power supply unit K1 to the power supply point Kp3 is “50Ω”, the impedance value of the power supply point Kp3 is also set to “50Ω” in order to suppress signal reflection caused by the change in the impedance value. Arranged at a distance from the center C. Similarly, the feeding point Kp2 is arranged in consideration of the impedance value.

  As shown in FIG. 3, the patch antenna A2 may have a curved conductor surface. Further, the outer shape of the patch antenna A2 may be formed in a curved shape or a polygonal shape. Furthermore, as shown in FIG. 4A, the patch antenna A2 is partially cut away from the end of the disk-shaped conductor toward the center, and feed points Kp2 to Kp3 are provided on the center side of the notch. It may be configured. Note that the electrical length of the diameter of the disk-shaped conductor is half the wavelength (half wavelength) corresponding to the use frequency of the radio signal transmitted and received. FIG. 4B shows a YY sectional view of FIG. When a feeding point is provided in the patch antenna A2 by cutting out a part of the disk shape, as shown in FIG. 4B, the feeding line L and the feeding point Kp3 are connected without providing a hole in the substrate 50. It may be configured. 4A and 4B illustrate examples in which the patch antenna A2 is disk-shaped, it is needless to say that the patch antenna A2 may be rectangular or elliptical. In the present embodiment, the patch antenna A2 constitutes a second antenna element.

  Hereinafter, the configuration of each of the power feeding units K1 to K2 will be specifically described. The power feeding unit K1 is connected to the whip antenna A1 via the connection unit 10. When the whip antenna A1 is pulled out, the power feeding unit K1 feeds power to the feeding point Kp1 of the whip antenna A1. Further, when the whip antenna A1 is housed, the power feeding unit K1 feeds power to the feeding point Kp3 of the patch antenna A2 via the whip antenna A1. Specifically, when the whip antenna A1 is housed, the feeding unit K1 is connected to the feeding point Kp3 of the patch antenna A2 via the whip antenna A1, the connection unit 20, and the feeding line L, and the feeding point Kp3. Power to In the present embodiment, the power feeding unit K1 constitutes a first power feeding unit.

  The power feeding unit K2 is connected to the power feeding point Kp2 of the patch antenna A2. The power supply unit K2 supplies power to the power supply point Kp2 of the patch antenna A2. Note that the power feeding unit K2 feeds power to the feeding point Kp2 of the patch antenna A2 regardless of whether the whip antenna A1 is pulled out or stored. In the present embodiment, the power feeding unit K2 constitutes a second power feeding unit.

(Operation / Effect of Wireless Device According to First Embodiment)
According to the wireless device 1 according to the present embodiment, when the whip antenna A1 is pulled out of the housing 100, the power feeding unit K1 feeds power to the feeding point Kp1 of the whip antenna A1, and the power feeding unit K2 Power is fed to the feeding point Kp2 of A2. In this case, the wireless device 1 performs wireless communication by a diversity method (space diversity method) based on two wireless signals by supplying power to the feeding point Kp1 of the whip antenna A1 and the feeding point Kp2 of the patch antenna A2. Can do.

  In the wireless device 1, when the whip antenna A1 is housed, the power feeding unit K1 feeds power to the feeding point Kp3 of the patch antenna A2, and the power feeding unit K2 feeds power to the feeding point Kp2 of the patch antenna A2. In this case, the wireless device 1 performs wireless communication by a diversity method (polarization diversity method) based on two wireless signals by supplying power to the feeding point Kp2 of the patch antenna A2 and the feeding point Kp3 of the patch antenna A2. be able to.

 In a conventional diversity wireless device including a whip antenna and a patch antenna, when the whip antenna is stored, the reception performance of the whip antenna is degraded. As a result, there has been a problem that the communication quality does not change from the case of transmitting and receiving a radio signal by a single method using only a patch antenna. On the other hand, according to said radio | wireless apparatus 1, even if it is a case where whip antenna A1 is accommodated, radio | wireless communication can be performed by a diversity system by making patch antenna A2 act as a diversity antenna. Thereby, even if it is a case where whip antenna A1 is accommodated, the communication quality of a radio signal can be improved.

(Modification 1 according to the first embodiment)
Further, the present invention is not limited to the above-described embodiment, and various modifications can be made. For example, as shown in FIG. 5, the wireless device 1 may further include a conductor tube 15 made of a grounded conductor. In such a configuration, whip antenna A1 is housed inside conductor tube 15 when housed. Here, the conductor tube 15 is constituted by a resin straw having a metal such as copper foil deposited on the surface thereof. In such a case, by providing a ground point GP to be connected to the ground on the surface of the conductor tube 15 and grounding the surface of the conductor tube 15, it is possible to prevent extra wireless signals that cause noise from being transmitted and received from the whip antenna A <b> 1. To do. Therefore, in the wireless device 1, the power supply unit K1 can supply power more stably to the power supply point Kp3. Moreover, the connection part 20 may be comprised by the spring-like pressing member which presses whip antenna A1 to the feeder line L, and connects with a metal contact. Such a conductor tube 15 may also be included in the configuration of the antenna device.

(Modification 2 according to the first embodiment)
Further, the present invention is not limited to the above-described embodiment, and various modifications can be made. For example, as shown in FIG. 6, the whip antenna A <b> 1 may include a turning unit 30. Whip antenna A <b> 1 is drawn out of housing 100 or accommodated in housing 100 by turning swivel unit 30.

  Specifically, in the wireless device 1 according to the present embodiment, the feeding unit K1 feeds power to the whip antenna A1 from the feeding point Kp1 of the whip antenna A1 when the whip antenna A1 is pulled out. In addition, when the whip antenna A1 is housed, the power feeding unit K1 feeds the patch antenna A2 via the whip antenna A1, the connection unit 20, and the power feeding line L as in the first embodiment described above. Power is supplied to the point Kp3.

  Also in the wireless device 1 according to the present embodiment, similarly to the first embodiment described above, even when the whip antenna A1 is housed, the communication quality of the wireless signal is improved by the diversity method (polarization diversity). Can be improved.

(Modification 3 according to the first embodiment)
Furthermore, the present invention is not limited to the above-described embodiments, and various modifications can be made. For example, as shown in FIGS. 7A to 7B, the wireless device 1 may be configured to include a loop antenna A3 instead of the patch antenna A2. Specifically, in the wireless device 1 according to the present embodiment, the loop antenna A3 includes feed points Kp2 to Kp3. Here, the straight line connecting the feeding point Kp2 and the center C1 of the loop antenna A3 and the straight line connecting the feeding point Kp3 and the center C1 of the loop antenna A3 are configured to be orthogonal to each other. With this configuration, in the loop antenna A3, feeding is performed to transmit or receive a radio signal whose polarization direction corresponds to the horizontal direction at the feeding point Kp2, and the polarization direction corresponds to the vertical direction at the feeding point Kp3. Power is supplied to transmit or receive a radio signal to be transmitted. In the present embodiment, the loop antenna A3 constitutes a second antenna element.

  In addition, in the wireless device 1 according to the present embodiment, as illustrated in FIG. 7A, when the whip antenna A1 is drawn, the power feeding unit K1 feeds power from the feeding point Kp1 to the whip antenna A1. The power feeding unit K2 feeds power to the loop antenna A3 from the feeding point Kp2 of the loop antenna A3. That is, in the wireless device 1, power is supplied to the feeding point Kp1 of the whip antenna A1 and the feeding point Kp2 of the loop antenna A3, and wireless communication by the diversity method is performed.

  Further, in the wireless device 1 according to the present embodiment, as illustrated in FIG. 7B, when the whip antenna A1 is housed, the power feeding unit K1 includes the whip antenna A1, the connection unit 20, and the power feeding line L. Then, the power is fed to the feeding point Kp3 of the loop antenna A3. Also at this time, the power feeding unit K2 feeds power to the loop antenna A3 from the power feeding point Kp2 of the loop antenna A3. That is, in the wireless device 1, power is supplied to the feeding point Kp2 of the loop antenna A3 and the feeding point Kp3 of the loop antenna A3, and wireless communication by the diversity method is performed.

  Also in the wireless device 1 according to the present embodiment, similarly to the first embodiment described above, even when the whip antenna A1 is housed, the communication quality of the wireless signal is improved by the diversity method (polarization diversity). Can be improved.

(Modification 4 according to the first embodiment)
Furthermore, the present invention is not limited to the above-described embodiments, and various modifications can be made. For example, as illustrated in FIG. 8, the wireless device 1 may be configured to include an inverted F-type antenna A4 instead of the patch antenna A2.

  Specifically, as shown in FIG. 8, in the wireless device 1 according to the present embodiment, the inverted F-type antenna A4 is configured by a rectangular flat plate conductor. Note that the shape of the inverted-F antenna A4 is not limited to this. In the present embodiment, the electrical length of one side of the flat plate is set to a length of one quarter of the wavelength based on the use frequency of the radio signal transmitted and received.

  The inverted F-type antenna A4 includes feed points Kp2 to Kp3 and a ground point C2. The ground point C2 is short-circuited to the ground surface GL of the substrate 50 and is grounded. Further, the straight line connecting the feeding point Kp2 and the grounding point C2 and the straight line connecting the feeding point Kp3 and the grounding point C2 are configured to be orthogonal to each other. That is, as shown in FIG. 8, the feeding points Kp2 to Kp3 are provided so that the angle α is about 90 °.

  With this configuration, in the inverted F-type antenna A4, feeding is performed for transmitting or receiving a radio signal whose polarization direction corresponds to the vertical direction at the feeding point Kp2, and the polarization direction is horizontal at the feeding point Kp3. Power is supplied to transmit or receive a radio signal corresponding to. In the present embodiment, the inverted F-type antenna A4 constitutes a second antenna element.

  Moreover, in the radio | wireless apparatus 1 which concerns on this embodiment, when the whip antenna A1 is pulled out, the electric power feeding part K1 feeds electric power to the whip antenna A1 from the feeding point Kp1. The power feeding unit K2 feeds power from the feeding point Kp2 to the inverted F-type antenna A4. That is, in the wireless device 1, power is supplied to the feeding point Kp1 of the whip antenna A1 and the feeding point Kp2 of the inverted F-type antenna A4, and wireless communication by the diversity method is performed.

  In the wireless device 1 according to the present embodiment, when the whip antenna A1 is housed, the power feeding unit K1 is connected to the inverted F antenna A4 via the whip antenna A1, the connection unit 20, and the power feeding line L. The power is fed to the feeding point Kp3. Also at this time, the power feeding unit K2 feeds power from the feeding point Kp2 to the inverted F-type antenna A4. That is, in the wireless apparatus 1, power is supplied to the feeding point Kp2 of the inverted F-type antenna A4 and the feeding point Kp3 of the inverted F-type antenna A4, and wireless communication by the diversity method is performed.

  Also in the wireless device 1 according to the present embodiment, similarly to the first embodiment described above, even when the whip antenna A1 is housed, the communication quality of the wireless signal is improved by the diversity method (polarization diversity). Can be improved.

(Modification 5 according to the first embodiment)
In the above-described embodiment, the wireless device 1 has been described assuming that the feeding unit K2 feeds the feeding point Kp2 when the whip antenna A1 is pulled out. Instead, when the whip antenna A1 is pulled out, the power feeding unit K2 may feed power to the power feeding point Kp3. That is, the power feeding unit K2 is configured to feed power to the feeding point Kp3 when the whip antenna A1 is pulled out, and to switch the feeding destination from the feeding point Kp3 to the feeding point Kp2 when the whip antenna A1 is stored. May be.

(Other embodiments)
As described above, the contents of the present invention have been disclosed through one embodiment of the present invention. However, it should not be understood that the description and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments will be apparent to those skilled in the art.

  For example, in the antenna device of the wireless device 1 according to the above-described embodiment, the patch antenna A2 includes the feeding point Kp4 (not shown) and the feeding unit K3 (not shown) that feeds the feeding point Kp4. It is also possible. In this case, a straight line connecting the feeding point Kp2 and the center C, a straight line connecting the feeding point Kp3 and the center C, and a straight line connecting the feeding point Kp4 and the center C are set at an interval of about 60 °. It is desirable to provide feed points Kp2 to Kp4.

  In addition, the configuration of each embodiment and the configuration of each modified example can be combined. In addition, the operation and effect of each embodiment and each modification are merely a list of the most preferable operations and effects resulting from the present invention, and the operation and effect according to the present invention are described in each embodiment and each modification. It is not limited to the ones.

  As described above, the present invention naturally includes various embodiments that are not described herein. Therefore, the technical scope of the present invention is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.

(A) In the radio | wireless apparatus which concerns on 1st Embodiment of this invention, it is a schematic block diagram which shows the structure in case the whip antenna is pulled out. (B) In the radio | wireless apparatus which concerns on 1st Embodiment of this invention, it is a schematic block diagram which shows the structure in case the whip antenna is accommodated. (A) It is a front view which shows the structure of the patch antenna which concerns on 1st Embodiment of this invention. (A) It is sectional drawing which shows the structure of the patch antenna which concerns on 1st Embodiment of this invention. It is a figure which shows an example of the patch antenna which concerns on 1st Embodiment of this invention. (A) It is a front view which shows an example of the patch antenna which concerns on 1st Embodiment of this invention. (B) It is sectional drawing which shows an example of the patch antenna which concerns on 1st Embodiment of this invention. It is a figure which shows the structure in the case of providing a conductor pipe in the radio | wireless apparatus which concerns on the modification of this invention. (A) In the radio | wireless apparatus which concerns on the modification of this invention, it is a schematic block diagram which shows the structure in case the whip antenna is pulled out. (B) In the radio | wireless apparatus which concerns on the modification of this invention, it is a schematic block diagram which shows a structure in case the whip antenna is accommodated. (A) In the radio | wireless apparatus which concerns on the modification of this invention, it is a schematic block diagram which shows the structure in case the whip antenna is pulled out. (B) In the radio | wireless apparatus which concerns on the modification of this invention, it is a schematic block diagram which shows a structure in case the whip antenna is accommodated. It is a front view which shows the structure of the inverted F type antenna which concerns on the modification of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Wireless apparatus, 10 ... Connection part, 15 ... Conductor tube, 20 ... Connection part, 30 ... Turning part, 50 ... Board | substrate, 100 ... Housing | casing, alpha ... Angle, A1 ... Whip antenna, A2 ... Patch antenna, A3 ... Loop antenna, C to C1 ... center, DH ... horizontal direction, DV ... vertical direction, GF ... grounding surface, GP ... grounding point, H ... hole, K1-K2 ... feeding unit, Kp1-Kp3 ... feeding point, L ... feeding Electrical wire,

Claims (5)

In order to perform wireless communication by a diversity method, including a first antenna element that can be pulled out or housed outside the casing and a second antenna element that is used for transmitting or receiving a plurality of radio signals having different polarization directions. Antenna device,
The first antenna element has a first feeding point;
The second antenna element has a second feeding point and a third feeding point,
When the first antenna element is stored, the first antenna element is connected to the third feeding point, and when the first antenna element is pulled out, the first antenna element is not connected to the third feeding point. An antenna device characterized by the above. The straight line connecting the second feeding point and the center of the second antenna element and the straight line connecting the third feeding point and the center of the second antenna element are orthogonal to each other. The antenna device described. The antenna device according to claim 1, wherein the second antenna element is a patch antenna configured by a flat conductor. A conductor tube made of a grounded conductor;
The antenna device according to any one of claims 1 to 3, wherein the first antenna element is housed inside the conductor tube when housed. A wireless device that performs wireless communication by a diversity method,
A first antenna element that can be pulled out of the case or stored in the case;
A second antenna element used for transmitting or receiving a plurality of radio signals having different polarization directions;
Comprising first and second power feeding sections;
The first antenna element has a first feeding point,
The second antenna element has a second feeding point and a third feeding point provided in different directions with respect to the center of the antenna element,
When pulling out the first antenna element,
While the first feeding unit feeds power to the first feeding point, the second feeding unit feeds power to the second or third feeding point,
When storing the first antenna element,
When the first antenna element is connected to the third feeding point, the first feeding part feeds power to the third feeding point via the first feeding point and the first antenna element, and the second feeding part is second. A wireless device that feeds power to a feeding point.

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