JP2007243908A - Antenna device and electronic apparatus using the same - Google Patents

Antenna device and electronic apparatus using the same Download PDF

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JP2007243908A
JP2007243908A JP2006231734A JP2006231734A JP2007243908A JP 2007243908 A JP2007243908 A JP 2007243908A JP 2006231734 A JP2006231734 A JP 2006231734A JP 2006231734 A JP2006231734 A JP 2006231734A JP 2007243908 A JP2007243908 A JP 2007243908A
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conductor
vertex
feeding
power supply
antenna device
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Akihiro Hoshiai
暁洋 星合
Susumu Fukushima
奨 福島
Yosuke Wada
洋亮 和田
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To improve antenna directivity in a direction away from a grounding subject. <P>SOLUTION: An antenna device 16 includes: a grounding subject 17; a feeder 18 insulated from the grounding subject 17; a first conductor 20 shaping like substantially a looped triangle and coupled to the feeder 18 at a first feeder top 19; and a second conductor 22 line-symmetric to the first conductor 20 with a line passing through the feeder 18 as a symmetry axis and coupled to the feeder 18 at a second feeder top 21. The first feeder top 19 is placed closest to the grounding subject 17 among other elements of the first conductor 20, and the second feeder top 21 is placed closest to the grounding subject 17 among other elements of the second conductor 22. The foregoing structure allows a high electrical field section of a first side 23 of the first conductor and that of a first side 26 of the second conductor to leave further away from the grounding subject. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、信号を受信するアンテナ装置とこれを用いた電子機器に関するものである。   The present invention relates to an antenna device that receives a signal and an electronic apparatus using the antenna device.

従来のアンテナ装置１は、以下に示すようなバランス型のアンテナであった。   The conventional antenna device 1 is a balanced antenna as shown below.

図９において、従来のアンテナ装置１は、グランド形成体２と、このグランド形成体２に対して絶縁状態で配置された給電部３と、この給電部３からグランド形成体２から遠ざかる方向に延びた第１給電線４及び第２給電線５とを有する。さらに、従来のアンテナ装置１は、第１給電線４に第１給電頂点６で接続された三角形環状の第１導体７と、第２給電線５に第２給電頂点８で接続された第２導体９とを有する。これら第１導体７と第２導体９とは給電部３を通る線を対称軸として線対称形状である。   In FIG. 9, the conventional antenna device 1 includes a ground forming body 2, a power feeding portion 3 arranged in an insulated state with respect to the ground forming body 2, and a direction away from the ground forming body 2 from the power feeding portion 3. The first power supply line 4 and the second power supply line 5 are provided. Further, the conventional antenna device 1 includes a triangular first conductor 7 connected to the first feed line 4 at the first feed vertex 6 and a second conductor connected to the second feed line 5 at the second feed vertex 8. And a conductor 9. The first conductor 7 and the second conductor 9 have a line-symmetric shape with a line passing through the power feeding unit 3 as an axis of symmetry.

そして、第１導体７は、第１給電頂点６からアンテナ装置１の外側に向かうに従ってグランド形成体２に近づくように延びた第１導体第１辺１０と、第１給電頂点６から延びると共に第１導体第１辺１０よりグランド形成体２から遠い第１導体第２辺１１と、第１導体第１辺１０の他端と第１導体第２辺１１の他端とに接続された第１導体第３辺１２とからなる。また、第２導体９も同様に、第２給電頂点８からアンテナ装置１の外側に向かうに従ってグランド形成体２に近づくように延びた第２導体第１辺１３と、第２給電頂点８から延びると共に第２導体第１辺１３よりグランド形成体２から遠い第２導体第２辺１４と、第２導体第１辺１３の他端と第２導体第２辺１４の他端とに接続された第２導体第３辺１５とからなる。   The first conductor 7 extends from the first power supply vertex 6 and extends from the first power supply vertex 6, and extends from the first power supply vertex 6. A first conductor connected to the first conductor second side 11 farther from the ground forming body 2 than the first conductor first side 10, the other end of the first conductor first side 10, and the other end of the first conductor second side 11. It consists of a conductor third side 12. Similarly, the second conductor 9 extends from the second power supply vertex 8 and the second conductor first side 13 extending so as to approach the ground forming body 2 toward the outside of the antenna device 1 from the second power supply vertex 8. And connected to the second conductor second side 14 farther from the ground forming body 2 than the second conductor first side 13, the other end of the second conductor first side 13, and the other end of the second conductor second side 14. It consists of the second conductor third side 15.

尚、この出願の発明に関する先行技術文献情報としては、例えば、特許文献１が知られている。
特開２００５−１３０２９２号公報 For example, Patent Document 1 is known as prior art document information relating to the invention of this application.
JP 2005-130292 A

上記従来のアンテナ装置１において、第１導体７及び第２導体９の辺のうち最もグランド形成体２に近い第１導体第１辺１０及び第２導体第１辺１３がアンテナ装置１の外側に向かうに従ってグランド形成体２に近づいている。これにより、第１導体第１辺１０及び第２導体第１辺１３において、アンテナ装置１の外側に向かうほど高電界であるので、第１導体第１辺１０及び第２導体第１辺１３とグランド形成体２とが電磁界結合し、グランド形成体２の反射器としての機能が低下する。その結果、グランド形成体２から遠ざかる方向のアンテナ指向性、つまり、図９の上方向（矢印Ａの方向）のアンテナ指向性が低下するという問題があった。   In the conventional antenna device 1, the first conductor first side 10 and the second conductor first side 13 closest to the ground forming body 2 among the sides of the first conductor 7 and the second conductor 9 are outside the antenna device 1. It is approaching the ground formation body 2 as it goes. As a result, the first conductor first side 10 and the second conductor first side 13 have a higher electric field toward the outside of the antenna device 1, so the first conductor first side 10 and the second conductor first side 13 The ground forming body 2 is electromagnetically coupled, and the function of the ground forming body 2 as a reflector is reduced. As a result, there has been a problem that the antenna directivity in the direction away from the ground forming body 2, that is, the antenna directivity in the upward direction in FIG.

そこで、本発明はグランド形成体から遠ざかる方向のアンテナ指向性を向上させることを目的とする。   Therefore, an object of the present invention is to improve the antenna directivity in the direction away from the ground forming body.

この目的を達成するために本発明のアンテナ装置は、グランド形成体と、このグランド形成体に対して絶縁状態で配置された給電部と、この給電部に第１給電頂点で接続された略三角形環状の第１導体と、給電部を通る線を対称軸として第１導体と線対称形状であると共に給電部に第２給電頂点で接続された第２導体とを備える。   In order to achieve this object, an antenna device of the present invention includes a ground forming body, a power feeding portion arranged in an insulated state with respect to the ground forming body, and a substantially triangular shape connected to the power feeding portion at a first power feeding vertex. An annular first conductor and a second conductor that is line-symmetrical with the first conductor with a line passing through the power feeding portion as the axis of symmetry and that is connected to the power feeding portion at a second power feeding vertex.

尚、第１導体は、第１給電頂点から延びた第１導体第１辺と、第１給電頂点から延びると共に第１導体第１辺よりグランド形成体から遠い第１導体第２辺と、第１導体第１辺の他端と第１導体第２辺の他端とを接続する第１導体第３辺とからなる。   The first conductor includes a first conductor first side extending from the first power supply vertex, a first conductor second side extending from the first power supply vertex and farther from the ground formation body than the first conductor first side, It consists of a first conductor third side connecting the other end of one conductor first side and the other end of the first conductor second side.

また、第２導体は、第２給電頂点から延びた第２導体第１辺と、第２給電頂点から延びると共に第２導体第１辺よりグランド形成体から遠い第２導体第２辺と、第２導体第１辺の他端と第２導体第２辺の他端とを接続する第２導体第３辺とからなる。   The second conductor includes a second conductor first side extending from the second power supply vertex, a second conductor second side extending from the second power supply vertex and farther from the ground formation body than the second conductor first side, It consists of the second side of the second conductor and the third side of the second conductor connecting the other end of the second side of the second conductor.

そして、第１給電頂点は第１導体のうちグランド形成体に最近接すると共に、第２給電頂点は第２導体のうちグランド形成体に最近接している。   The first power supply vertex is closest to the ground forming body of the first conductor, and the second power supply vertex is closest to the ground forming body of the second conductor.

上記構成により、第１導体及び第２導体のうち最もグランド形成体に近い第１導体第１辺及び第２導体第１辺がアンテナ装置の外側に向かうに従ってグランド形成体から遠ざかる。つまり、第１導体第１辺及び第２導体第１辺における高電界部分がグランド形成体から遠ざかる。これにより、第１導体第１辺及び第２導体第１辺とグランド形成体とが電磁界結合するのを抑制することができ、グランド形成体の反射器としての機能が向上する。その結果、グランド形成体から遠ざかる方向のアンテナ指向性を向上させることができる。   With the above configuration, the first conductor first side and the second conductor first side that are closest to the ground formation body among the first conductor and the second conductor are moved away from the ground formation body as they go to the outside of the antenna device. That is, the high electric field portions on the first conductor first side and the second conductor first side move away from the ground forming body. Thereby, it can suppress that the 1st conductor 1st edge and the 2nd conductor 1st edge, and a ground formation body couple | bond with an electromagnetic field, and the function as a reflector of a ground formation body improves. As a result, the antenna directivity in the direction away from the ground forming body can be improved.

（実施の形態１）
以下、本発明の実施の形態１について図１を用いて説明する。 (Embodiment 1)
Hereinafter, Embodiment 1 of the present invention will be described with reference to FIG.

図１は、本発明の実施の形態１におけるアンテナ装置の構成図を示したものである。図１において、アンテナ装置１６は、例えば金属からなる導電性のグランド形成体１７と、このグランド形成体１７に対して絶縁状態で配置された給電部１８と、この給電部１８に第１給電頂点１９で接続された略三角形環状の第１導体２０と、給電部１８を通る線を対称軸として第１導体２０と線対称形状であると共に給電部１８に第２給電頂点２１で接続された第２導体２２とを備えるバランス型アンテナである。このように、第１導体２０及び第２導体２２を平板とせずに中央部をくり貫いた環状とすることにより、アンテナ装置１６が車両のフロントガラスに貼付された場合、ユーザの前方視認性を高めることができる。尚、このアンテナ装置１６を用いた電子機器（図示せず）は、給電部１８に接続された無線回路（図示せず）と、この無線回路に接続された表示部（図示せず）とを備えている。   FIG. 1 shows a configuration diagram of an antenna apparatus according to Embodiment 1 of the present invention. In FIG. 1, the antenna device 16 includes a conductive ground forming body 17 made of, for example, metal, a power feeding portion 18 arranged in an insulated state with respect to the ground forming body 17, and a first feeding vertex at the power feeding portion 18. A first conductor 20 having a substantially triangular ring shape connected to the first conductor 20 and a first conductor 20 having a line symmetrical to the first conductor 20 with a line passing through the feeder 18 as a symmetric axis, and connected to the feeder 18 at the second feeder vertex 21. A balanced antenna including two conductors 22. Thus, when the antenna device 16 is affixed to the windshield of the vehicle, the first conductor 20 and the second conductor 22 are not formed as flat plates, but are formed in an annular shape that penetrates the center portion. Can be increased. Note that an electronic device (not shown) using the antenna device 16 includes a radio circuit (not shown) connected to the power feeding unit 18 and a display unit (not shown) connected to the radio circuit. I have.

尚、第１導体２０は、第１給電頂点１９から延びた第１導体第１辺２３と、第１給電頂点１９から延びると共に第１導体第１辺２３よりグランド形成体から遠い第１導体第２辺２４と、第１導体第１辺２３の他端と第１導体第２辺２４の他端とを接続する第１導体第３辺２５とからなる。   The first conductor 20 includes a first conductor first side 23 extending from the first power supply vertex 19 and a first conductor first side 23 extending from the first power supply vertex 19 and farther from the ground formation body than the first conductor first side 23. It consists of two sides 24 and a first conductor third side 25 connecting the other end of the first conductor first side 23 and the other end of the first conductor second side 24.

また、第２導体２２は、第２給電頂点２１から延びた第２導体第１辺２６と、第２給電頂点２１から延びると共に第２導体第１辺２６よりグランド形成体から遠い第２導体第２辺２７と、第２導体第１辺２６の他端と第２導体第２辺２７の他端とを接続する第２導体第３辺２８とからなる。   The second conductor 22 includes a second conductor first side 26 extending from the second power feeding vertex 21 and a second conductor first side 26 extending from the second power feeding vertex 21 and farther from the ground forming body than the second conductor first side 26. It consists of two sides 27 and a second conductor third side 28 connecting the other end of the second conductor first side 26 and the other end of the second conductor second side 27.

そして、第１給電頂点１９は第１導体２０のうちグランド形成体１７に最近接すると共に、第２給電頂点２１は第２導体２２のうちグランド形成体１７に最近接している。   The first power supply vertex 19 is closest to the ground forming body 17 in the first conductor 20, and the second power supply vertex 21 is closest to the ground forming body 17 in the second conductor 22.

次に、実施の形態１のアンテナ装置における信号受信時の動作を、図１を用いて説明する。   Next, the operation at the time of signal reception in the antenna apparatus of Embodiment 1 will be described with reference to FIG.

第１導体２０は給電部１８より給電されて、それぞれ第１導体第１辺２３、第１導体第２辺２４、及び第１導体第３辺２５に、受信に寄与する受信電流が流れる。同様に、第２導体２２は給電部１８より給電されて、それぞれ第２導体第１辺２６、第２導体第２辺２７、及び第２導体第３辺２８に、受信に寄与する受信電流が流れる。   The first conductor 20 is supplied with power from the power supply unit 18, and a reception current contributing to reception flows through the first conductor first side 23, the first conductor second side 24, and the first conductor third side 25, respectively. Similarly, the second conductor 22 is supplied with power from the power supply unit 18, and reception currents contributing to reception are respectively supplied to the second conductor first side 26, the second conductor second side 27, and the second conductor third side 28. Flowing.

詳述すると、第１導体第１辺２３に流れる受信電流は、図１に示す矢印のように、第１導体第３辺２５側から第１給電頂点１９に向けて流れる。また、第２導体第１辺２６に流れる受信電流は、第２給電頂点２１から第２導体第３辺２８側に向けて流れる。このように、アンテナ装置１６は、第１導体第１辺２３と第２導体第１辺２６に流れる受信電流により、ある共振周波数ｆ１にて共振する。   More specifically, the received current flowing through the first conductor first side 23 flows from the first conductor third side 25 side toward the first power feeding vertex 19 as shown by the arrow in FIG. In addition, the received current flowing in the second conductor first side 26 flows from the second power feeding vertex 21 toward the second conductor third side 28 side. As described above, the antenna device 16 resonates at a certain resonance frequency f <b> 1 by the reception current flowing through the first conductor first side 23 and the second conductor first side 26.

また、第１導体第３辺２５及び第１導体第２辺２４に流れる受信電流は、図１に示す矢印のように、第１導体第１辺２３と第１導体第３辺２５との接続点から第１導体第３辺２５と第１導体第２辺２４との接続点を経由し、第１給電頂点１９に向けて流れる。また、第２導体第２辺２７及び第２導体第３辺２８に流れる受信電流は、第２給電頂点２１から第２導体第２辺２７と第２導体第３辺２８との接続点を経由し、第２導体第３辺２８と第２導体第１辺２６の接続点に向けて流れる。このように、アンテナ装置１６は、第１導体第３辺２５と第１導体第２辺２４と第２導体第２辺２７と第２導体第３辺２８とに流れる受信電流により、ある共振周波数ｆ２にて共振する。このように、アンテナ装置１６は、異なる２つの共振周波数ｆ１とｆ２とを有することで、アンテナ比帯域が大きくなる。   Also, the received current flowing through the first conductor third side 25 and the first conductor second side 24 is the connection between the first conductor first side 23 and the first conductor third side 25 as shown by the arrows in FIG. The current flows from the point toward the first feeding vertex 19 via the connection point between the first conductor third side 25 and the first conductor second side 24. The received current flowing through the second conductor second side 27 and the second conductor third side 28 passes through the connection point between the second conductor second side 27 and the second conductor third side 28 from the second power feeding vertex 21. However, it flows toward the connection point between the second conductor third side 28 and the second conductor first side 26. As described above, the antenna device 16 has a certain resonance frequency due to the received current flowing through the first conductor third side 25, the first conductor second side 24, the second conductor second side 27, and the second conductor third side 28. Resonates at f2. As described above, the antenna device 16 has two different resonance frequencies f1 and f2, thereby increasing the antenna ratio band.

尚、上記は、アンテナ装置の信号受信時の動作についての説明であるが、信号送信時の動作も同様である。   Although the above description is about the operation of the antenna device when receiving a signal, the operation when transmitting a signal is the same.

上記構成により、第１導体２０及び第２導体２２のうち最もグランド形成体に近い第１導体第１辺２３及び第２導体第１辺２６がアンテナ装置１６の外側に向かうに従ってグランド形成体１７から遠ざかる。つまり、第１導体第１辺２３及び第２導体第１辺２６における高電界部分がグランド形成体１７から遠ざかる。これにより、第１導体第１辺２３及び第２導体第１辺２６とグランド形成体１７とが電磁界結合するのを抑制することができ、グランド形成体１７の反射器としての機能が向上する。その結果、グランド形成体１７から遠ざかる方向のアンテナ指向性を向上させることができる。   With the above configuration, the first conductor first side 23 and the second conductor first side 26 that are closest to the ground forming body among the first conductor 20 and the second conductor 22 are moved from the ground forming body 17 toward the outside of the antenna device 16. Move away. That is, the high electric field portions in the first conductor first side 23 and the second conductor first side 26 are moved away from the ground forming body 17. Thereby, it can suppress that the 1st conductor 1st edge | side 23 and the 2nd conductor 1st edge | side 26, and the ground formation body 17 couple | bond with an electromagnetic field, and the function as a reflector of the ground formation body 17 improves. . As a result, the antenna directivity in the direction away from the ground forming body 17 can be improved.

尚、第１導体２０と第２導体２２とは、給電部１８を通る面を対称面として面対称形状であっても構わない。即ち、アンテナ装置１６は、グランド形成体１７と、このグランド形成体１７に対して絶縁状態で配置された給電部１８と、この給電部１８に第１給電頂点１９で接続された略三角形環状の第１導体２０と、給電部１８を通る面を対称面として第１導体２０と面対称形状であると共に給電部１８に第２給電頂点２１で接続された第２導体２２とを備える。そして、第１給電頂点１９は第１導体２０のうちグランド形成体１７に最近接すると共に、第２給電頂点２１は第２導体２２のうちグランド形成体１７に最近接している。この場合も同様に、第１導体第１辺２３及び第２導体第１辺２６とグランド形成体１７とが電磁界結合するのを抑制することができ、グランド形成体１７の反射器としての機能が向上する。その結果、グランド形成体１７から遠ざかる方向のアンテナ指向性を向上させることができる。   The first conductor 20 and the second conductor 22 may have a plane symmetric shape with a plane passing through the power feeding unit 18 as a plane of symmetry. That is, the antenna device 16 includes a ground forming body 17, a feeding portion 18 arranged in an insulated state with respect to the ground forming body 17, and a substantially triangular annular shape connected to the feeding portion 18 at a first feeding vertex 19. A first conductor 20 and a second conductor 22 that is plane-symmetric with the first conductor 20 with a plane passing through the power supply unit 18 as a plane of symmetry and connected to the power supply unit 18 at a second power supply vertex 21 are provided. The first power supply vertex 19 is closest to the ground forming body 17 in the first conductor 20, and the second power supply vertex 21 is closest to the ground forming body 17 in the second conductor 22. Similarly in this case, the first conductor first side 23 and the second conductor first side 26 and the ground forming body 17 can be prevented from being electromagnetically coupled, and the function of the ground forming body 17 as a reflector can be suppressed. Will improve. As a result, the antenna directivity in the direction away from the ground forming body 17 can be improved.

次に、図２を用いて、第１導体２０及び第２導体２２が車両２９のフロントガラス３０に貼付されている場合について説明する。   Next, the case where the 1st conductor 20 and the 2nd conductor 22 are affixed on the windshield 30 of the vehicle 29 is demonstrated using FIG.

図１におけるグランド形成体１７は、車両２９のフロントガラス３０の周囲に配置された車両２９の金属ボディ３１のうち、例えば、車両２９の天板３２である。第１導体２０及び第２導体２２は、第１給電頂点１９及び第２給電頂点２１が車両の天板３２とフロントガラス３０との境界線３３に最近接するように貼付されている。尚、給電部１８を通る対称軸は、車両２９の天板３２とフロントガラス３０との境界線３３に対して略垂直になるように、第１導体２０及び第２導体２２がフロントガラス３０に貼付されている。尚、例えば、アンテナ装置１６と車両２９の天板３２との距離は、アンテナ装置１６と車両２９のサイドフレーム３４などの他の金属ボディ３１部分との距離よりも小さい。   The ground forming body 17 in FIG. 1 is, for example, the top plate 32 of the vehicle 29 among the metal bodies 31 of the vehicle 29 arranged around the windshield 30 of the vehicle 29. The first conductor 20 and the second conductor 22 are pasted so that the first feeding vertex 19 and the second feeding vertex 21 are closest to the boundary line 33 between the top plate 32 and the windshield 30 of the vehicle. The first conductor 20 and the second conductor 22 are arranged on the windshield 30 so that the axis of symmetry passing through the power feeding unit 18 is substantially perpendicular to the boundary line 33 between the top plate 32 and the windshield 30 of the vehicle 29. It is affixed. For example, the distance between the antenna device 16 and the top plate 32 of the vehicle 29 is smaller than the distance between the antenna device 16 and another metal body 31 portion such as the side frame 34 of the vehicle 29.

上記構成により、第１導体第１辺２３及び第２導体第１辺２６と車両２９の天板３２とが電磁界結合するのを抑制することができ、天板３２の反射器としての機能が向上する。その結果、車両２９の天板３２から遠ざかる方向のアンテナ指向性を向上させることができる。つまり、車両２９の前方のアンテナ指向性が向上する。車両２９に搭載されたアンテナ装置１６が、例えばデジタルテレビ放送を車両２９の移動中に受信する場合、車内からの散乱波もノイズとして受信するという、いわゆるマルチパスフェージングが生じる場合がある。このような場合、車両２９の前方のアンテナ指向性を向上させることにより、このようなマルチパスフェージングを抑制することができる。   With the above configuration, it is possible to suppress the electromagnetic coupling between the first conductor first side 23 and the second conductor first side 26 and the top plate 32 of the vehicle 29, and the function of the top plate 32 as a reflector can be prevented. improves. As a result, the antenna directivity in the direction away from the top plate 32 of the vehicle 29 can be improved. That is, the antenna directivity in front of the vehicle 29 is improved. When the antenna device 16 mounted on the vehicle 29 receives, for example, a digital television broadcast while the vehicle 29 is moving, so-called multipath fading may occur in which a scattered wave from the inside of the vehicle is also received as noise. In such a case, such multipath fading can be suppressed by improving the antenna directivity in front of the vehicle 29.

（実施の形態２）
以下、本発明の実施の形態２におけるアンテナ装置について図３を用いて説明する。図３は、本発明の実施の形態２におけるアンテナ装置の構成図を示したものである。尚、実施の形態１と同一の構成については、同一の符号をつけてその説明を省略し、相違点について詳述する。 (Embodiment 2)
Hereinafter, an antenna apparatus according to Embodiment 2 of the present invention will be described with reference to FIG. FIG. 3 shows a configuration diagram of the antenna device according to the second embodiment of the present invention. In addition, about the structure same as Embodiment 1, the same code | symbol is attached | subjected, the description is abbreviate | omitted, and a difference is explained in full detail.

実施の形態２における実施の形態１との相違点は、アンテナ装置１６において、第１導体第１辺２３と第１導体第３辺２５とのなす角及び第２導体第１辺２６と第２導体第３辺２８とのなす角が鈍角である点である。これにより、グランド形成体１７から遠い第１導体第２辺２４及び第２導体第２辺２７のエレメント長がグランド形成体に近い第１導体第１辺２３及び第２導体第１辺２６のエレメント長よりも長くなる。つまり、エレメント長の長い導体がグランド形成体１７から遠ざかるので、第１導体２０及び第２導体２２とグランド形成体１７とが電磁界結合するのをさらに抑制することができ、グランド形成体１７の反射器としての機能がさらに向上する。その結果、グランド形成体１７から遠ざかる方向のアンテナ指向性をさらに向上させることができる。   The difference between the second embodiment and the first embodiment is that in the antenna device 16, the angle formed by the first conductor first side 23 and the first conductor third side 25, the second conductor first side 26 and the second side. The angle formed with the conductor third side 28 is an obtuse angle. Thereby, the elements of the first conductor first side 23 and the second conductor first side 26 in which the element lengths of the first conductor second side 24 and the second conductor second side 27 far from the ground formation body 17 are close to the ground formation body. It becomes longer than the length. That is, since the conductor having a long element length moves away from the ground forming body 17, it is possible to further suppress the electromagnetic coupling between the first conductor 20 and the second conductor 22 and the ground forming body 17. The function as a reflector is further improved. As a result, the antenna directivity in the direction away from the ground forming body 17 can be further improved.

（実施の形態３）
以下、本発明の実施の形態３について図４を用いて説明する。 (Embodiment 3)
The third embodiment of the present invention will be described below with reference to FIG.

図４は、本発明の実施の形態３におけるアンテナ装置１６の構成図を示したものである。尚、実施の形態１と同一の構成については、同一の符号をつけてその説明を省略し、相違点について詳述する。   FIG. 4 shows a configuration diagram of the antenna device 16 according to Embodiment 3 of the present invention. In addition, about the structure same as Embodiment 1, the same code | symbol is attached | subjected, the description is abbreviate | omitted, and a difference is explained in full detail.

図４において、アンテナ装置１６は、給電部１８と、この給電部１８に接続された略直角三角形の環状の第１導体２０と、給電部１８を通る線を対称軸として、第１導体２０と線対称形状である第２導体２２とを備えたバランス型アンテナである。   In FIG. 4, the antenna device 16 includes a power feeding unit 18, a first conductor 20 having a substantially right triangle connected to the power feeding unit 18, and a first conductor 20 with a line passing through the power feeding unit 18 as an axis of symmetry. It is a balance type antenna provided with the 2nd conductor 22 which is a line symmetrical shape.

そして、第１導体２０は、第１直角頂点３５と、給電部１８に接続された第１給電頂点１９と、第１直角頂点３５及び第１給電頂点１９以外の第１鋭角頂点３６とを有する。また、第２導体２２も同様に、第２直角頂点３７と、給電部１８に接続された第２給電頂点２１と、第２直角頂点３７及び第２給電頂点２１以外の第２鋭角頂点３８とを有する。さらに、第１導体２０における第１導体第２辺２４と、第２導体２２における第２導体第２辺２７とは略平行である。   The first conductor 20 has a first right angle vertex 35, a first power supply vertex 19 connected to the power supply unit 18, and a first acute angle vertex 36 other than the first right angle vertex 35 and the first power supply vertex 19. . Similarly, the second conductor 22 has a second right angle vertex 37, a second power supply vertex 21 connected to the power supply unit 18, and a second acute angle vertex 38 other than the second right angle vertex 37 and the second power supply vertex 21. Have Further, the first conductor second side 24 in the first conductor 20 and the second conductor second side 27 in the second conductor 22 are substantially parallel.

このアンテナ装置１６は、例えば、第１導体第３辺２５と第２導体第３辺２８とが導電性のグランド形成体１７に対し略平行になるように配置されている。また、アンテナ装置１６は、アンテナ装置１６において給電部１８がグランド形成体１７に最接近するように配置されている。例えば、アンテナ装置１６は、自動車のフロントガラス上に配置され、自動車の天板であるグランド形成体１７とフロントガラスとの境界線に対し、第１導体第３辺２５及び第２導体第３辺２８が略平行になるように配置されている。   In the antenna device 16, for example, the first conductor third side 25 and the second conductor third side 28 are arranged so as to be substantially parallel to the conductive ground forming body 17. Further, the antenna device 16 is arranged such that the power feeding unit 18 is closest to the ground forming body 17 in the antenna device 16. For example, the antenna device 16 is disposed on the windshield of an automobile, and the first conductor third side 25 and the second conductor third side with respect to the boundary line between the ground forming body 17 that is the top plate of the automobile and the windshield. 28 are arranged so as to be substantially parallel.

次に、実施の形態３のアンテナ装置１６における信号受信時の動作を、図４を用いて説明する。   Next, the operation at the time of signal reception in the antenna device 16 of the third embodiment will be described with reference to FIG.

第１導体２０と第２導体２２に流れる受信電流は基本的に実施の形態１と同様である。実施の形態１との相違点は、第１導体第２辺２４に流れる受信電流と第２導体第２辺２７に流れる受信電流とが図４に示す矢印のように、互いに逆向きに流れる点である。これにより、第１導体第２辺２４に流れる受信電流と第２導体第２辺２７に流れる受信電流は互いに打ち消しあうので、第１導体第２辺２４及び第２導体第２辺２７は、伝送線路としての役割を果たしている。   The received current flowing through the first conductor 20 and the second conductor 22 is basically the same as in the first embodiment. The difference from the first embodiment is that the reception current flowing through the first conductor second side 24 and the reception current flowing through the second conductor second side 27 flow in opposite directions as indicated by arrows in FIG. It is. As a result, the received current flowing in the first conductor second side 24 and the received current flowing in the second conductor second side 27 cancel each other, so that the first conductor second side 24 and the second conductor second side 27 It plays a role as a track.

このように、実施の形態４のアンテナ装置１６も実施の形態１のアンテナ装置と同様に、異なる２つの共振周波数ｆ１とｆ２とを有することで、アンテナ比帯域が大きくなる。ここで、本明細書において、アンテナ比帯域は、アンテナの共振周波数で規格化されたアンテナインピーダンスを基にアンテナＶＳＷＲ特性が３以下となる周波数範囲を求めることにより導出することとする。ここで、ＶＳＷＲとは、Ｖｏｌｔａｇｅ Ｓｔａｎｄｉｎｇ Ｗａｖｅ Ｒａｔｉｏの略で、アンテナに入力されたエネルギーが、アンテナと伝送線路間の不整合により反射することなく、アンテナに伝わり放射されるかを表す１つの指標であり、通常アンテナ設計を行う場合、アンテナＶＳＷＲ特性は３以下として設定される。   As described above, the antenna device 16 of the fourth embodiment also has two different resonance frequencies f1 and f2 as in the antenna device of the first embodiment, so that the antenna ratio band is increased. Here, in this specification, the antenna ratio band is derived by obtaining a frequency range in which the antenna VSWR characteristic is 3 or less based on the antenna impedance standardized by the resonance frequency of the antenna. Here, VSWR is an abbreviation for Voltage Standing Wave Ratio, and is an index that indicates whether energy input to the antenna is transmitted and radiated to the antenna without being reflected due to mismatch between the antenna and the transmission line. Yes, when performing normal antenna design, the antenna VSWR characteristic is set to 3 or less.

アンテナ装置１６において、第１鋭角頂点３６及び第２鋭角頂点３８の角度によって、上記アンテナ比帯域が変化する。以下、このアンテナ比帯域の変化について、具体例を挙げて説明する。   In the antenna device 16, the antenna ratio band changes depending on the angles of the first acute angle vertex 36 and the second acute angle vertex 38. Hereinafter, the change in the antenna ratio band will be described with a specific example.

図５は、グランド形成体１７と給電部１８との距離を１５ｍｍ離し、第１導体第２辺２４と第２導体第２辺２７との距離を０．１ｍｍ、０．２ｍｍ、０．３ｍｍと変化させ、第１導体第２辺２４及び第２導体第２辺２７の線路長をそれぞれ２５ｍｍとした時の、第１鋭角頂点３６及び第２鋭角頂点３８の角度とアンテナ比帯域との関係を示した図である。また、図５には、図１０に示す従来のダイポールアンテナの比帯域特性も示されている。尚、従来のダイポールアンテナの構成として、グランド形成体１１７と給電部１０１との距離は１５ｍｍであり、第１導体第２辺１０７と第２導体第２辺１１３との距離は０．１ｍｍであり、第１導体第２辺１０７と第２導体第２辺１１３の長さは２５ｍｍであり、第１導体第３辺１０８と第２導体第３辺１１４の長さは４３．２５ｍｍである。図５に示すグラフより、図１０に示す従来のダイポールアンテナの比帯域は、８．８％であると分かる。また、従来のダイポールアンテナの比帯域以上の特性を得るためには、第１鋭角頂点３６の角度及び第２鋭角頂点３８の角度が略１２度から４８度であれば良いことが分かる。特に、第１鋭角頂点３６の角度及び第２鋭角頂点３８の角度が、略２０度から４０度の場合に、アンテナ比帯域がさらに大きくなる。第１鋭角頂点３６及び第２鋭角頂点３８の角度を２０度より大きくしていくと、第１導体第１辺２３と第２導体第１辺２６の長さが、第１導体第３辺２５と第２導体第３辺２８の長さから遠ざかる。その結果、アンテナ比帯域が大きくなる。   In FIG. 5, the distance between the ground forming body 17 and the power feeding unit 18 is 15 mm, and the distance between the first conductor second side 24 and the second conductor second side 27 is 0.1 mm, 0.2 mm, and 0.3 mm. The relationship between the angle of the first acute angle vertex 36 and the second acute angle vertex 38 and the antenna ratio band when the line lengths of the first conductor second side 24 and the second conductor second side 27 are 25 mm respectively. FIG. FIG. 5 also shows the ratio band characteristics of the conventional dipole antenna shown in FIG. As a configuration of the conventional dipole antenna, the distance between the ground forming body 117 and the power feeding unit 101 is 15 mm, and the distance between the first conductor second side 107 and the second conductor second side 113 is 0.1 mm. The length of the first conductor second side 107 and the second conductor second side 113 is 25 mm, and the length of the first conductor third side 108 and the second conductor third side 114 is 43.25 mm. From the graph shown in FIG. 5, it can be seen that the specific bandwidth of the conventional dipole antenna shown in FIG. 10 is 8.8%. In addition, it can be seen that the first acute angle vertex 36 and the second acute angle vertex 38 may have an angle of approximately 12 degrees to 48 degrees in order to obtain characteristics exceeding the specific bandwidth of the conventional dipole antenna. In particular, when the angle of the first acute angle vertex 36 and the angle of the second acute angle vertex 38 are approximately 20 degrees to 40 degrees, the antenna ratio band is further increased. When the angles of the first acute angle vertex 36 and the second acute angle vertex 38 are made larger than 20 degrees, the lengths of the first conductor first side 23 and the second conductor first side 26 become the first conductor third side 25. And away from the length of the second conductor third side 28. As a result, the antenna ratio band is increased.

一方、第１鋭角頂点３６及び第２鋭角頂点３８の角度を、４０度より小さくしていくと、第１導体第１辺２３と第２導体第１辺２６とが、底辺に平行な線に近づく。その結果、第１導体第１辺２３を流れる受信電流ベクトルと第２導体第１辺２６を流れる受信電流ベクトルとを底辺に対して平行成分と垂直成分とにそれぞれ分解したときに、電流ベクトルの垂直成分が小さくなる。第１導体第１辺２３を流れる電流ベクトルの垂直成分と、第２導体第１辺２６を流れる電流ベクトルの垂直成分とは、互いに逆向きで、互いに打ち消し合うので、電流ベクトルの垂直成分は小さいほうが望ましい。これにより、第１導体第１辺２３及び第２導体第１辺２６の放射特性が向上し、アンテナ比帯域が大きくなる。   On the other hand, when the angles of the first acute angle vertex 36 and the second acute angle vertex 38 are made smaller than 40 degrees, the first conductor first side 23 and the second conductor first side 26 become a line parallel to the bottom side. Get closer. As a result, when the received current vector flowing through the first conductor first side 23 and the received current vector flowing through the second conductor first side 26 are respectively decomposed into a parallel component and a vertical component with respect to the base, The vertical component is reduced. Since the vertical component of the current vector flowing through the first conductor first side 23 and the vertical component of the current vector flowing through the second conductor first side 26 are opposite to each other and cancel each other, the vertical component of the current vector is small. Is preferable. Thereby, the radiation characteristics of the first conductor first side 23 and the second conductor first side 26 are improved, and the antenna ratio band is increased.

そして、第１鋭角頂点３６の角度及び第２鋭角頂点３８の角度を略３０度にすると、最大のアンテナ比帯域を得ることができる。   When the angle of the first acute angle vertex 36 and the angle of the second acute angle vertex 38 are approximately 30 degrees, the maximum antenna ratio band can be obtained.

また、第１導体２０と第２導体２２とは、任意の面を対称面として略面対称な形状であっても良い。   Further, the first conductor 20 and the second conductor 22 may have a substantially plane-symmetric shape with an arbitrary plane as a symmetry plane.

（実施の形態４）
以下、本発明の実施の形態４におけるアンテナ装置１６について図６を用いて説明する。尚、特に説明しない限りは、実施の形態３と同様である。図６は、本発明の実施の形態４におけるアンテナ装置１６の構成図を示したものである。 (Embodiment 4)
Hereinafter, the antenna device 16 according to Embodiment 4 of the present invention will be described with reference to FIG. Unless otherwise specified, the third embodiment is the same as the third embodiment. FIG. 6 shows a configuration diagram of the antenna device 16 according to Embodiment 4 of the present invention.

実施の形態４における実施の形態３との相違点は、アンテナ装置１６が、一端が第１鋭角頂点３６に接続され第１導体第２辺２４に略平行な第１平行線３９と、一端が第２鋭角頂点３８に接続され第２導体第２辺２７に略平行な第２平行線４０と、第１平行線３９の他端と第２平行線４０の他端とを結ぶように接続され第１平行線３９及び第２平行線４０に対して略垂直である垂直線４１とを有する点である。   The difference between the fourth embodiment and the third embodiment is that the antenna device 16 has one end connected to the first acute angle vertex 36 and substantially parallel to the first conductor second side 24, and one end connected to the first parallel line 24. The second parallel line 40 connected to the second acute angle vertex 38 and substantially parallel to the second conductor second side 27 is connected to connect the other end of the first parallel line 39 and the other end of the second parallel line 40. This is a point having a vertical line 41 that is substantially perpendicular to the first parallel line 39 and the second parallel line 40.

次に、実施の形態４のアンテナ装置１６における信号受信時の動作を、図６を用いて説明する。   Next, the operation at the time of signal reception in the antenna device 16 of the fourth embodiment will be described with reference to FIG.

第１導体２０と第２導体２２とに流れる受信電流は、実施の形態３と同様である。また、垂直線４１上の受信に寄与する受信電流は、図６に示すように、第１導体第３辺２５及び第２導体第３辺２８を流れる受信電流と同じ向きに流れる。これは、折返し（フォールデッド）ダイポールアンテナの動作原理を応用したものである。折返しダイポールアンテナは、２つ以上のダイポールアンテナを平行に配置し、その先端を互いに接続して、これらのダイポールのうち１つを中央で給電しているアンテナである。この構成により、平行に配置された２つの半波長ダイポールアンテナにおいて、互いの素子を流れる電流は等しくなり、同相に流れる。   The received current flowing through the first conductor 20 and the second conductor 22 is the same as that in the third embodiment. Also, the reception current contributing to reception on the vertical line 41 flows in the same direction as the reception current flowing through the first conductor third side 25 and the second conductor third side 28 as shown in FIG. This is an application of the operating principle of a folded dipole antenna. The folded dipole antenna is an antenna in which two or more dipole antennas are arranged in parallel, the tips thereof are connected to each other, and one of these dipoles is fed at the center. With this configuration, in the two half-wavelength dipole antennas arranged in parallel, the currents flowing through the elements are equal and flow in the same phase.

このような構成にすることにより、アンテナは見かけ上、広帯域な三角形状ダイポールアンテナとダイポールアンテナがそれぞれ連なっている構成となり、アンテナ装置１６の放射特性を向上させることができると共に、アンテナ比帯域がさらに大きくなる。   By adopting such a configuration, the antenna is apparently configured such that a wide-band triangular dipole antenna and a dipole antenna are connected to each other, so that the radiation characteristics of the antenna device 16 can be improved and the antenna ratio band is further increased. growing.

（実施の形態５）
以下、本発明の実施の形態５におけるアンテナ装置１６について図７及び図８を用いて説明する。尚、特に説明しない限りは、実施の形態３及び実施の形態４と同様である。 (Embodiment 5)
Hereinafter, antenna device 16 according to Embodiment 5 of the present invention will be described with reference to FIGS. Unless otherwise specified, the third embodiment is the same as the third embodiment and the fourth embodiment.

図７及び図８は、本発明の実施の形態５におけるアンテナ装置１６の構成図を示したものである。   7 and 8 show a configuration diagram of the antenna device 16 according to the fifth embodiment of the present invention.

実施の形態５における実施の形態４との相違点は、アンテナ装置１６が、第１平行線３９と垂直線４１との交点に接続された第１斜辺４２と、第２平行線４０と垂直線４１との交点に接続された第２斜辺４３とを有し、これら第１斜辺４２と第２斜辺４３とを斜辺として、垂直線４１と第１斜辺４２と第２斜辺４３とにより略二等辺三角形が形成されている点である。   The difference between the fifth embodiment and the fourth embodiment is that the antenna device 16 is connected to the intersection of the first parallel line 39 and the vertical line 41 with the first oblique side 42 and the second parallel line 40 and the vertical line. 41 having a second hypotenuse 43 connected to the intersection with 41, the first hypotenuse 42 and the second hypotenuse 43 being the hypotenuse, and the vertical line 41, the first hypotenuse 42 and the second hypotenuse 43 being approximately isosceles sides. This is the point where a triangle is formed.

次に、実施の形態５のアンテナ装置１６における信号受信時の動作を、図７及び図８を用いて説明する。   Next, the operation at the time of signal reception in the antenna device 16 according to the fifth embodiment will be described with reference to FIGS.

第１導体２０と第２導体２２と垂直線４１とに流れる受信電流は、実施の形態３および実施の形態４と同様である。また、第１斜辺４２を流れる受信電流は、第１平行線３９と垂直線４１との交点から第１斜辺４２と第２斜辺４３との交点に向けて流れ、第２斜辺４３を流れる受信電流は、第１斜辺４２と第２斜辺４３との交点から第２平行線４０と垂直線４１との交点に向けて流れる。   The received current flowing through the first conductor 20, the second conductor 22, and the vertical line 41 is the same as in the third and fourth embodiments. Also, the reception current flowing through the first hypotenuse 42 flows from the intersection of the first parallel line 39 and the vertical line 41 toward the intersection of the first hypotenuse 42 and the second hypotenuse 43 and flows through the second hypotenuse 43. Flows from the intersection of the first oblique side 42 and the second oblique side 43 toward the intersection of the second parallel line 40 and the vertical line 41.

上記構成のように、アンテナ装置１６が第１斜辺４２と第２斜辺４３とを有することにより、アンテナ装置１６のアンテナ比帯域がさらに大きくなる。   As described above, when the antenna device 16 has the first oblique side 42 and the second oblique side 43, the antenna ratio band of the antenna device 16 is further increased.

本発明に係るアンテナ装置は、グランド形成体から遠ざかる方向のアンテナ指向性をさらに向上させることができるので、携帯電話などの電子機器もしくはデジタルテレビ信号を受信する車載機器に特に有用である。   The antenna device according to the present invention can further improve the antenna directivity in the direction away from the ground forming body, and thus is particularly useful for an electronic device such as a mobile phone or an in-vehicle device that receives a digital television signal.

本発明の実施の形態１におけるアンテナ装置の構成図Configuration diagram of antenna apparatus according to Embodiment 1 of the present invention 同実施の形態１におけるアンテナ装置を搭載した車両を示す図The figure which shows the vehicle carrying the antenna apparatus in Embodiment 1 同実施の形態２におけるアンテナ装置の構成図Configuration diagram of antenna apparatus according to Embodiment 2 本発明の実施の形態３におけるアンテナ装置の構成図Configuration diagram of antenna apparatus according to Embodiment 3 of the present invention 実施の形態３におけるアンテナ装置の第１鋭角頂点及び第２鋭角頂点の角度とアンテナ比帯域の関係を示した図The figure which showed the relationship between the angle of the 1st acute angle vertex of the antenna apparatus in Embodiment 3, and the 2nd acute angle vertex, and an antenna ratio band 実施の形態４におけるアンテナ装置の構成図Configuration diagram of antenna apparatus according to Embodiment 4 実施の形態５におけるアンテナ装置の構成図Configuration diagram of antenna apparatus according to Embodiment 5 実施の形態５におけるアンテナ装置の構成図Configuration diagram of antenna apparatus according to Embodiment 5 従来のアンテナ装置の構成図Configuration diagram of conventional antenna device 従来のアンテナ装置の構成図Configuration diagram of conventional antenna device

符号の説明Explanation of symbols

１６ アンテナ装置
１７ グランド形成体
１８ 給電部
１９ 第１給電頂点
２０ 第１導体
２１ 第２給電頂点
２２ 第２導体
２３ 第１導体第１辺
２４ 第１導体第２辺
２５ 第１導体第３辺
２６ 第２導体第１辺
２７ 第２導体第２辺
２８ 第２導体第３辺
２９ 車両
３０ フロントガラス
３１ 金属ボディ
３２ 天板
３３ 境界線 16 Antenna Device 17 Ground Forming Body 18 Feeding Portion 19 First Feeding Point 20 First Conductor 21 Second Feeding Point 22 Second Conductor 23 First Conductor First Side 24 First Conductor Second Side 25 First Conductor Third Side 26 Second conductor first side 27 Second conductor second side 28 Second conductor third side 29 Vehicle 30 Windshield 31 Metal body 32 Top plate 33 Boundary line

Claims (13)

グランド形成体と、このグランド形成体に対して絶縁状態で配置された給電部と、この給電部に第１給電頂点で接続された略三角形環状の第１導体と、前記給電部を通る線を対称軸として前記第１導体と略線対称形状であると共に前記給電部に第２給電頂点で接続された第２導体とを備え、前記第１給電頂点は前記第１導体のうち前記グランド形成体に最近接すると共に、前記第２給電頂点は前記第２導体のうち前記グランド形成体に最近接したアンテナ装置。 A ground forming body, a power feeding portion arranged in an insulated state with respect to the ground forming body, a substantially triangular annular first conductor connected to the power feeding portion at a first power feeding vertex, and a line passing through the power feeding portion. And a second conductor that is substantially line symmetrical with the first conductor as a symmetry axis and is connected to the power feeding portion at a second power feeding vertex, and the first power feeding vertex is the ground forming body of the first conductor. And the second feeding vertex is closest to the ground forming body of the second conductor. 前記第１導体は、前記第１給電頂点から延びた第１導体第１辺と、第１給電頂点から延びると共に前記第１導体第１辺より前記グランド形成体から遠い第１導体第２辺と、前記第１導体第１辺の他端と前記第１導体第２辺の他端とを接続する第１導体第３辺とからなり、前記第１導体において、前記第１導体第１辺と前記第１導体第３辺とのなす角は鈍角である請求項１に記載のアンテナ装置。 The first conductor includes a first conductor first side extending from the first power supply vertex, a first conductor second side extending from the first power supply vertex and farther from the ground formation body than the first conductor first side; A first conductor third side connecting the other end of the first conductor first side and the other end of the first conductor second side, wherein the first conductor first side and the first conductor first side The antenna device according to claim 1, wherein an angle formed by the first conductor third side is an obtuse angle. グランド形成体と、このグランド形成体に対して絶縁状態で配置された給電部と、この給電部に第１給電頂点で接続された略三角形環状の第１導体と、前記給電部を通る面を対称面として前記第１導体と略面対称形状であると共に前記給電部に第２給電頂点で接続された第２導体とを備え、前記第１給電頂点は前記第１導体のうち前記グランド形成体に最近接すると共に、前記第２給電頂点は前記第２導体のうち前記グランド形成体に最近接したアンテナ装置。 A ground forming body, a power feeding portion arranged in an insulated state with respect to the ground forming body, a substantially triangular annular first conductor connected to the power feeding portion at a first power feeding vertex, and a surface passing through the power feeding portion. And a second conductor having a substantially plane symmetrical shape with the first conductor as a symmetry plane and connected to the feeding portion at a second feeding vertex, wherein the first feeding vertex is the ground forming body of the first conductor. And the second feeding vertex is closest to the ground forming body of the second conductor. 給電部と、この給電部に接続された略直角三角形の環状の第１導体と、前記給電部を通る線を対称軸として、前記第１導体と略線対称形状である第２導体とを備え、
前記第１導体は、第１直角頂点と、前記給電部に接続された第１給電頂点と、これら第１直角頂点及び第１給電頂点以外の第１鋭角頂点とを有し、
前記第２導体は、第２直角頂点と、前記給電部に接続された第２給電頂点と、これら第２直角頂点及び第２給電頂点以外の第２鋭角頂点とを有し、
前記第１導体における前記第１直角頂点と前記第１給電頂点とを含む第１導体第２辺と前記第２導体における前記第２直角頂点と前記第２給電頂点とを含む第２導体第２辺とは略平行であるアンテナ装置。 A power supply unit, a first conductor having a substantially right triangle shape connected to the power supply unit, and a second conductor having a substantially line-symmetric shape with respect to the first conductor with a line passing through the power supply unit as an axis of symmetry. ,
The first conductor has a first right vertex, a first feeding vertex connected to the feeding portion, and a first acute angle vertex other than the first right vertex and the first feeding vertex,
The second conductor has a second right vertex, a second feeding vertex connected to the feeding portion, and a second acute angle vertex other than the second right vertex and the second feeding vertex.
A second conductor second including a first conductor second side including the first right vertex and the first feeding vertex in the first conductor, and the second right vertex and the second feeding vertex in the second conductor; An antenna device that is substantially parallel to a side. 給電部と、この給電部に接続された略直角三角形の環状の第１導体と、前記給電部を通る面を対称面として、前記第１導体と略面対称形状である第２導体とを備え、
前記第１導体は、第１直角頂点と、前記給電部に接続された第１給電頂点と、これら第１直角頂点及び第１給電頂点以外の第１鋭角頂点とを有し、
前記第２導体は、第２直角頂点と、前記給電部に接続された第２給電頂点と、これら第２直角頂点及び第２給電頂点以外の第２鋭角頂点とを有し、
前記第１導体における前記第１直角頂点と前記第１給電頂点とを含む第１導体第２辺と前記第２導体における前記第２直角頂点と前記第２給電頂点とを含む第２導体第２辺とは略平行であるアンテナ装置。 A power supply section, a first conductor having a substantially right triangular shape connected to the power supply section, and a second conductor that is substantially plane-symmetric with the first conductor with a plane passing through the power supply section as a symmetry plane. ,
The first conductor has a first right vertex, a first feeding vertex connected to the feeding portion, and a first acute angle vertex other than the first right vertex and the first feeding vertex,
The second conductor has a second right vertex, a second feeding vertex connected to the feeding portion, and a second acute angle vertex other than the second right vertex and the second feeding vertex.
A second conductor second including a first conductor second side including the first right vertex and the first feeding vertex in the first conductor, and the second right vertex and the second feeding vertex in the second conductor; An antenna device that is substantially parallel to a side. 前記第１鋭角頂点の角度及び前記第２鋭角頂点の角度は、略１２度から４８度である請求項４または請求項５に記載のアンテナ装置。 The antenna device according to claim 4 or 5, wherein an angle of the first acute angle vertex and an angle of the second acute angle vertex are approximately 12 degrees to 48 degrees. 前記第１鋭角頂点の角度及び前記第２鋭角頂点の角度は、略２０度から４０度である請求項４または請求項５に記載のアンテナ装置。 The antenna device according to claim 4 or 5, wherein an angle of the first acute angle vertex and an angle of the second acute angle vertex are approximately 20 degrees to 40 degrees. 前記第１鋭角頂点の角度及び前記第２鋭角頂点の角度は略３０度である請求項４または請求項５に記載のアンテナ装置。 The antenna device according to claim 4 or 5, wherein an angle of the first acute angle vertex and an angle of the second acute angle vertex are approximately 30 degrees. 一端が前記第１鋭角頂点に接続され前記第１導体第２辺に略平行な第１平行線と、
一端が前記第２鋭角頂点に接続され前記第２導体第２辺に略平行な第２平行線と、
前記第１平行線の他端と前記第２平行線の他端とを結ぶように接続され前記第１平行線及び前記第２平行線と略垂直である垂直線とを有する請求項４または請求項５に記載のアンテナ装置。 A first parallel line having one end connected to the first acute angle vertex and substantially parallel to the second side of the first conductor;
A second parallel line having one end connected to the second acute vertex and substantially parallel to the second side of the second conductor;
The vertical line which is connected so as to connect the other end of the first parallel line and the other end of the second parallel line and is substantially perpendicular to the first parallel line and the second parallel line. Item 6. The antenna device according to Item 5. 前記第１平行線と前記垂直線との交点に接続された第１斜辺と、
前記第２平行線と前記垂直線との交点に接続された第２斜辺とを有し、
前記第１斜辺と前記第２斜辺とを斜辺として、前記垂直線と前記第１斜辺と前記第２斜辺とにより略二等辺三角形が形成される請求項９に記載のアンテナ装置。 A first hypotenuse connected to an intersection of the first parallel line and the vertical line;
A second hypotenuse connected to the intersection of the second parallel line and the vertical line;
10. The antenna device according to claim 9, wherein an isosceles triangle is formed by the vertical line, the first hypotenuse, and the second hypotenuse, with the first hypotenuse and the second hypotenuse as the hypotenuse. グランド形成体と、このグランド形成体に対して絶縁状態で配置された給電部と、この給電部に第１給電頂点で接続された略三角形環状の第１導体と、前記給電部を通る線を対称軸として前記第１導体と略線対称形状であると共に前記給電部に第２給電頂点で接続された第２導体と、前記給電部に接続された無線回路と、この無線回路に接続された表示部とを備え、
前記第１給電頂点は前記第１導体のうち前記グランド形成体に最近接すると共に、前記第２給電頂点は前記第２導体のうち前記グランド形成体に最近接した電子機器。 A ground forming body, a power feeding portion arranged in an insulated state with respect to the ground forming body, a substantially triangular annular first conductor connected to the power feeding portion at a first power feeding vertex, and a line passing through the power feeding portion. A second conductor that is substantially line symmetrical with the first conductor as a symmetry axis and is connected to the power feeding portion at a second power feeding vertex, a wireless circuit connected to the power feeding portion, and a wireless circuit connected to the wireless circuit A display unit,
The electronic device in which the first power supply vertex is closest to the ground formation body in the first conductor, and the second power supply vertex is closest to the ground formation body in the second conductor. アンテナ装置が設けられたガラスと、このガラスの周囲に配置された金属ボディとを有する車両であって、前記アンテナ装置は、前記金属ボディに対して絶縁状態で配置された給電部と、この給電部に第１給電頂点で接続された略三角形環状の第１導体と、前記給電部を通る線を対称軸として前記第１導体と略線対称形状であると共に前記給電部に第２給電頂点で接続された第２導体と、前記給電部に接続された無線回路と、この無線回路に接続された表示部とを備え、前記第１給電頂点は前記第１導体のうち前記金属ボディに最近接すると共に、前記第２給電頂点は前記第２導体のうち前記金属ボディに最近接した車両。 A vehicle having a glass provided with an antenna device and a metal body arranged around the glass, wherein the antenna device is arranged in an insulated state with respect to the metal body, and the power supply A first conductor having a substantially triangular ring shape connected to the first power supply vertex and a line that passes through the power supply portion as an axis of symmetry, and a substantially line symmetrical shape with the first conductor, and a second power supply vertex to the power supply portion. A second connected circuit; a wireless circuit connected to the power supply unit; and a display unit connected to the wireless circuit, wherein the first power supply vertex is closest to the metal body of the first conductor. In addition, the second power feeding vertex is a vehicle that is closest to the metal body of the second conductor. 前記ガラスは前記車両のフロントガラスであり、前記金属ボディは前記車両の天板である請求項１２に記載の車両。 The vehicle according to claim 12, wherein the glass is a windshield of the vehicle, and the metal body is a top plate of the vehicle.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009212662A (en) * 2008-03-03 2009-09-17 Nec Corp Antenna
WO2010044262A1 (en) * 2008-10-17 2010-04-22 三菱電線工業株式会社 Wideband antenna
JP2011501567A (en) * 2007-10-18 2011-01-06 エージーシー オートモーティヴ アメリカズ アールアンドディー，インコーポレイテッド Multiband cellular antenna
US7948445B2 (en) 2008-02-18 2011-05-24 Nec Corporation Wideband antenna and clothing and articles using the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011501567A (en) * 2007-10-18 2011-01-06 エージーシー オートモーティヴ アメリカズ アールアンドディー，インコーポレイテッド Multiband cellular antenna
US7948445B2 (en) 2008-02-18 2011-05-24 Nec Corporation Wideband antenna and clothing and articles using the same
JP2009212662A (en) * 2008-03-03 2009-09-17 Nec Corp Antenna
WO2010044262A1 (en) * 2008-10-17 2010-04-22 三菱電線工業株式会社 Wideband antenna
US8599079B2 (en) 2008-10-17 2013-12-03 Mitsubishi Cable Industries, Ltd. Wideband antenna

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