JPH01228303A - Wide band antenna - Google Patents
Wide band antennaInfo
- Publication number
- JPH01228303A JPH01228303A JP63053630A JP5363088A JPH01228303A JP H01228303 A JPH01228303 A JP H01228303A JP 63053630 A JP63053630 A JP 63053630A JP 5363088 A JP5363088 A JP 5363088A JP H01228303 A JPH01228303 A JP H01228303A
- Authority
- JP
- Japan
- Prior art keywords
- plate
- antenna
- conductor
- conductor plate
- band
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004020 conductor Substances 0.000 claims abstract description 26
- 230000005855 radiation Effects 0.000 abstract description 6
- 239000002184 metal Substances 0.000 description 22
- 238000010586 diagram Methods 0.000 description 7
Landscapes
- Waveguide Aerials (AREA)
- Support Of Aerials (AREA)
- Transceivers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、小形・広帯域なアンテナに関Ｌ、特に、小形
で広帯域な特性を実現することの可能な板状逆Ｆ形アン
テナに係る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a small-sized, wide-band antenna, and particularly to a plate-shaped inverted F-shaped antenna that can realize small-sized and wide-band characteristics.
？Ｊ１図は本発明を適用するアンテナの構造の例を示す
斜視図であって、１は放射金属板、２はスタブと呼ばれ
る放射金属板と地板を接続する導体、３は給電Ｍ（同軸
の芯＃ｉ）、４は給電点（同軸の芯線と放射金属板との
接続点）、５は地板を表わしており、Ｗは給電線３の接
続されている辺の氏さ、Ｌは給電線３の接続されている
辺に直交する辺の長さ、ｈは放射金属［１の高さ （地
板と放射金属板との距離）を示している。? Figure J1 is a perspective view showing an example of the structure of an antenna to which the present invention is applied, in which 1 is a radiating metal plate, 2 is a conductor called a stub that connects the radiating metal plate and the ground plane, and 3 is a feeder M (coaxial core). #i), 4 represents the feed point (the connection point between the coaxial core wire and the radiation metal plate), 5 represents the ground plane, W is the height of the side to which the feed line 3 is connected, and L is the feed line 3 The length of the side perpendicular to the connected side, h indicates the height of the radiant metal [1 (distance between the ground plate and the radiant metal plate).
このアンテナの共振条件は、放射金属板１のＲ横の辺の
和（Ｗ＋Ｌ）力ｆ共ｍ周波数の波長の４分の１になるこ
と（Ｗ＋Ｌ″Ｐ ０，２５＾）であり、ＷおよびＬの個
々の長さの条件は無く、Ｗお上りＬとｈとの関係も 規
定されていなかった・
また、このアンテナは、第２図に示すように帯域幅が放
射金属板の、高さｈに比例して広（なる特徴を有してい
る。そのためこのアンテナ設計する場合、従来は、必要
な帯域幅が得られる放射金属板の高さｈを決め、放射金
属板の縦横の辺の和（Ｗ 十Ｌ ）を共振周波数の波長
の４分の−となるようにしていた。モしてＷおよびＬの
個々の長さは、アンテナが実装しやすいように任意に決
められていた。The resonance condition of this antenna is that the sum (W+L) of the R horizontal sides of the radiating metal plate 1 and the force f are one-fourth of the wavelength of the m frequency (W+L″P 0,25^), and W and There were no conditions for the individual lengths of L, and the relationship between W and h was not specified. Also, as shown in Figure 2, the bandwidth of this antenna was determined by the height of the radiating metal plate. Therefore, when designing this antenna, conventionally, the height h of the radiating metal plate that provides the necessary bandwidth was determined, and the height h of the radiating metal plate was determined, and the height h of the radiating metal plate was determined. The sum (W 1 L) was made to be -4/4 of the wavelength of the resonant frequency.The individual lengths of W and L were arbitrarily determined so that the antenna could be easily mounted.
上述したように、従来は必要な帯域幅は放射金属板の高
さｈによって決めていたので、 広い帯域が必要な場合
は、放射金属板の高さｈを大きくすることが必要なこと
からアンテナ容積が大きくなるという欠点を有していた
。As mentioned above, in the past, the required bandwidth was determined by the height h of the radiating metal plate, so if a wide band was required, it was necessary to increase the height h of the radiating metal plate, so the antenna It had the disadvantage of being large in volume.
第３図は、このようなアンテナを携帯無線機に実装した
状態を示す図であり、３１は放射金属板、３２はスタブ
、３３は給電線、３４は給電点、３５は地板、３６は受
話器、３７は金属筐体、３８はダイヤルパッドを表わし
ている。FIG. 3 is a diagram showing a state in which such an antenna is mounted on a portable radio device, where 31 is a radiation metal plate, 32 is a stub, 33 is a feed line, 34 is a feed point, 35 is a ground plane, and 36 is a receiver. , 37 represents a metal casing, and 38 represents a dial pad.
同図に示すように、本アンテナは携帯無Ｍｌｆｌに内蔵
されることが多く、このような携帯無線機は、本体を人
が手に直接持って扱うため小形であることが非常に重要
である。As shown in the figure, this antenna is often built into portable radio equipment, and it is very important that such portable radio equipment be small because the main body is held directly in the hand. .
しかＬ、従来の技術では、上述したように、広い帯域が
必要な場合、アンテナ容積が大きくなるため、これが無
線機の大型化につながり、利便性が低下するという欠点
があった。However, as described above, in the conventional technology, when a wide band is required, the volume of the antenna becomes large, which leads to an increase in the size of the wireless device and a disadvantage in that it is less convenient.
本発明は、このような従来の問題点に鑑み、小形かつ広
帯域な板状逆Ｆ形アンテナを提供することを目的として
いる。SUMMARY OF THE INVENTION In view of these conventional problems, it is an object of the present invention to provide a small, wide-band plate-shaped inverted F-shaped antenna.
本発明によれば上述の目的は、前記特許請求の範囲に記
載した手段により達成される。According to the invention, the above-mentioned object is achieved by the means specified in the claims.
すなわち、本発明は地板に対面して方形の導体板が存在
Ｌ、該導体板の一辺の端よりその辺に添って、幅がその
一辺より十分小さい導体で、導体板と地板とが接続され
ており、外皮導体が地板に接続された同輪線の芯線が地
板より立ち上がり、導体板の一辺上の一点へ接続された
構造のアンテナであって、同輪線の芯線が接続された導
体板の辺の長さをＷ、その辺に直交する導体板の辺の長
さをＬ１地板と導体板との距離をｈ、共振周波数の波長
をλとするとき、Ｌを０．１１λから０．１３λの範囲
の値にするとともに、Ｗを０．１６λから０．１８人の
間の値から１．８ ｈから１．９ ｈの間の値を引いた
値とした広帯域アンテナである。That is, in the present invention, there is a rectangular conductor plate facing the ground plane L, and the conductor plate and the ground plane are connected from the end of one side of the conductor plate along that side with a conductor whose width is sufficiently smaller than that one side. It is an antenna with a structure in which the core wire of the same ring wire whose outer conductor is connected to the ground plate rises above the ground plate and is connected to one point on one side of the conductor plate, and the core wire of the same ring wire is connected to the conductor plate. When the length of the side of is W, the length of the side of the conductor plate perpendicular to that side is L1, the distance between the ground plate and the conductor plate is h, and the wavelength of the resonant frequency is λ, then L is set from 0.11λ to 0. It is a wideband antenna with a value in the range of 13λ and W as a value obtained by subtracting a value between 1.8 h and 1.9 h from a value between 0.16λ and 0.18 people.
本発明は、第１図に示した構造のアンテナに適用される
ものであって、共振周波数の波長に対するアンテナの形
状寸法の範囲を特定したものである。The present invention is applied to the antenna having the structure shown in FIG. 1, and specifies the range of the shape and size of the antenna with respect to the wavelength of the resonant frequency.
ｐｌＳ４図は、本発明の詳細な説明する図であって、周
波数ｆに共振する各アンテナ形状の帯域変化について表
わしている。FIG. plS4 is a diagram for explaining the present invention in detail, and represents the band change of each antenna shape that resonates at the frequency f.
同図において、Ｌはλ＝ｆ−’Ｘ３Ｘ１０＠として、周
波数ｆに共振するように調整したものである。In the figure, L is adjusted to resonate at frequency f, with λ=f-'X3X10@.
すなわち、第４図は第１図に示すアンテナについて、放
射金属板の高さｈの値を４点選び、それぞれのｈの値に
おいて周波数ｆに共振（波長λ）するようにして放射金
属板の横寸法Ｗと縦寸法りを変えていった時の帯域幅の
変化を示したものである。That is, Fig. 4 shows the antenna shown in Fig. 1 by selecting four values of the height h of the radiating metal plate and resonating at the frequency f (wavelength λ) at each value of h. It shows the change in bandwidth when the horizontal dimension W and the vertical dimension are changed.
図か゛ら明らかなように、横寸法Ｗが変化しても縦寸法
りをｌｌ整すれば決まった周波数ｆに共振させることが
できる。As is clear from the figure, even if the lateral dimension W changes, resonance can be achieved at a fixed frequency f by adjusting the vertical dimension.
また、帯域幅は横寸法Ｗと縦寸法りのある決まった条件
の時最大となることがわかる。第４図においては、数字
符４１〜４４によって示す丸印の箇所が最大帯域となる
点を示している。It can also be seen that the bandwidth is at its maximum when the horizontal dimension W and the vertical dimension are under certain conditions. In FIG. 4, the circles indicated by numbers 41 to 44 indicate the points at which the maximum band is reached.
そこで、それぞれのｈと最大帯域となる横寸法Ｗと縦寸
法りとの関係を調べて第５図に示した。Therefore, the relationship between each h and the horizontal dimension W and the vertical dimension that provide the maximum band was investigated and is shown in FIG.
同図より、最大帯域を得るアンテナ形状の条件を厳密に
式により表わすと、放射金属板の横寸法Ｗは、放射金属
板と地板との距ａｈが大となるほど短くなる関係にあり
、最大帯域が得られる横寸法′Ｗの範囲は、 −１，８
６ｈ ＋’Ｏ。From the same figure, if the conditions for the antenna shape to obtain the maximum band are expressed strictly by a formula, the horizontal dimension W of the radiating metal plate becomes shorter as the distance ah between the radiating metal plate and the ground plate increases, and the maximum band The range of lateral dimension 'W that can be obtained is -1,8
6h +'O.
１６６λ≦Ｗ≦−１，８６ｈ 十０．１７３λとなって
いる。166λ≦W≦−1,86h 10.173λ.
また、放射金属板の縦寸法りは、放射金属板と地板との
距＠ｈには無関係であり、最大帯域が得、られる縦寸法
りの範囲は、 ０．１１７λ≦Ｌ≦０．１２λとなって
いる。Furthermore, the vertical dimension of the radiating metal plate is unrelated to the distance between the radiating metal plate and the ground plate @h, and the range of the vertical dimension in which the maximum band can be obtained is 0.117λ≦L≦0.12λ. It has become.
しかＬ、本実験は、大きな平板地板の上で行なったもの
であり、地板が小さい場合や、地板が金属筐体である場
合などを考慮すると、本発明を実際に適用する場合は、
Ｌが０．１１λから０．１３λ、Ｗが０．１６λから０
．１８λの闇の値から ｈの１．８倍から１．９倍の闇
の値を引いた値とすることが適切である。However, this experiment was conducted on a large flat base plate, and considering cases where the base plate is small or the base plate is a metal casing, when actually applying the present invention,
L from 0.11λ to 0.13λ, W from 0.16λ to 0
．． It is appropriate to set the value to be the value obtained by subtracting the darkness value of 1.8 to 1.9 times h from the darkness value of 18λ.
このような形状の放射金属板とすることにより、第４図
に示すように、この条件を適用しない場合に比べで、１
．２〜１．５倍の帯域拡大効果がある。従って、アンテ
ナ形状を大型化することなく、広い帯域を持つアンテナ
が得られる。By using a radiating metal plate with such a shape, as shown in Fig. 4, compared to the case where this condition is not applied, the
．． There is a band expansion effect of 2 to 1.5 times. Therefore, an antenna with a wide band can be obtained without increasing the size of the antenna.
また、本アンテナを携帯ｊ１Ｍｆｉに内蔵した場合、ア
ンテナ形状が小形であるため、携帯無線機本体も小形に
構成することができるので、利便性の高い携帝無＃ａ機
が実現できる。Moreover, when this antenna is built into a mobile j1Mfi, since the antenna shape is small, the main body of the mobile radio device can also be configured in a small size, so that a highly convenient mobile radio device can be realized.
以上説明したように、本発明によれば、地板とＮ１１ｉ
する導体板を設け、該導体板の一部と地板とを導体で接
続した構造の板状逆Ｆ形アンテナにおいて、これを小形
かつ広帯域なアンテナとして実現できる利点がある。As explained above, according to the present invention, the base plate and the N11i
A plate-shaped inverted F-shaped antenna having a structure in which a conductive plate is provided and a part of the conductive plate and a ground plane are connected by a conductor has the advantage that it can be realized as a small and wide-band antenna.
従って、この種のアンテナを内蔵する携帯無線機を小型
にすることができるため携帯無線機の利便性も向上する
。Therefore, a portable radio device incorporating this type of antenna can be made smaller, which improves the convenience of the portable radio device.
第１図は本発明を適用するアンテナのｔｆＩ造の例を示
す斜視図、第２図は放射４を翼板の高さｈと帯域の関係
を示す図、ｔＩＳ３図はアンテナを携帯無線機に実装し
た状態を示す図、第４図は本発明の詳細な説明する図、
第５図はｈと最大帯域となる横寸法Ｗと縦寸法りとの関
係を示す図である。
１．３１ ・・・・・・放射金属板、 ２．３２・
・・・・・ スタブ、 ３．３３ ・・・・・・
給電線、４．３４ ・・・・・・給電点、 ５ ｔ
３５ ・・・・・・地板、 ３６ ・・・・・・受
話器、 ３７・・・・・・會ＪＸ筐体、 ３８
・・・・・・ダイヤルパッド、 ４１〜４４
・・・・・・最大帯域となる点代理人 弁理士 本
間 崇％ ｌ ＠
Ｚ／λ
第 ２ 図
ｗ／ん
第３図
（／λFigure 1 is a perspective view showing an example of the tfI structure of an antenna to which the present invention is applied, Figure 2 is a diagram showing the relationship between the radiation 4 and the height h of the blade plate and the band, and Figure tIS3 is a diagram showing the relationship between the radiation 4 and the height h of the blade plate and the band. A diagram showing the installed state, FIG. 4 is a diagram illustrating detailed explanation of the present invention,
FIG. 5 is a diagram showing the relationship between h, the horizontal dimension W, and the vertical dimension that provide the maximum band. 1.31 ...Radiating metal plate, 2.32.
・・・・・・ Stub, 3.33 ・・・・・・
Power supply line, 4.34...Power supply point, 5t
35...Base plate, 36...Telephone receiver, 37...JX case, 38
...Dial pad, 41-44
・・・・・・Maximum bandwidth point Agent Patent attorney Book
Takashi Ma % l @ Z/λ Figure 2 w/n Figure 3 (/λ
Claims (1)
の端よりその辺に添って、幅がその一辺より十分小さい
導体で、導体板と地板とが接続されており、外皮導体が
地板に接続された同軸線の芯線が地板より立ち上がり、
導体板の一辺上の一点へ接続された構造のアンテナであ
って、同軸線の芯線が接続された導体板の辺の長さをＷ
、その辺に直交する導体板の辺の長さをＬ、地板と導体
板との距離をｈ、共振周波数の波長をλとするとき、Ｌ
を０．１１λから０．１３λの範囲の値にするとともに
、Ｗを０．１６λから０．１８λの間の値から１．８ｈ
から１．９ｈの間の値を引いた値としたことを特徴とす
る広帯域アンテナ。There is a rectangular conductor plate facing the base plate, and the conductor plate and the base plate are connected along the edge of one side of the conductor plate with a conductor whose width is sufficiently smaller than that side, and the outer conductor The core wire of the coaxial line connected to the main plate rises above the main plate,
This is an antenna that is connected to one point on one side of a conductor plate, and the length of the side of the conductor plate to which the core wire of the coaxial line is connected is W.
, the length of the side of the conductor plate perpendicular to that side is L, the distance between the ground plate and the conductor plate is h, and the wavelength of the resonant frequency is λ, then L
is set to a value in the range of 0.11λ to 0.13λ, and W is set to a value between 0.16λ and 0.18λ to 1.8h.
A wideband antenna characterized in that the value is obtained by subtracting a value between 1.9h and 1.9h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63053630A JP2708449B2 (en) | 1988-03-09 | 1988-03-09 | Broadband antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63053630A JP2708449B2 (en) | 1988-03-09 | 1988-03-09 | Broadband antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01228303A true JPH01228303A (en) | 1989-09-12 |
| JP2708449B2 JP2708449B2 (en) | 1998-02-04 |
Family
ID=12948226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63053630A Expired - Fee Related JP2708449B2 (en) | 1988-03-09 | 1988-03-09 | Broadband antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2708449B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04354401A (en) * | 1991-05-31 | 1992-12-08 | Murata Mfg Co Ltd | Microstrip antenna |
| JPH08237019A (en) * | 1995-02-24 | 1996-09-13 | Nippondenso Co Ltd | On-vehicle antenna system |
| US7119743B2 (en) | 2003-06-09 | 2006-10-10 | Matsushita Electric Industrial Co., Ltd. | Antenna and electronic device using the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62277803A (en) * | 1986-05-26 | 1987-12-02 | Nippon Telegr & Teleph Corp <Ntt> | Portable radio equipment |
-
1988
- 1988-03-09 JP JP63053630A patent/JP2708449B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62277803A (en) * | 1986-05-26 | 1987-12-02 | Nippon Telegr & Teleph Corp <Ntt> | Portable radio equipment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04354401A (en) * | 1991-05-31 | 1992-12-08 | Murata Mfg Co Ltd | Microstrip antenna |
| JPH08237019A (en) * | 1995-02-24 | 1996-09-13 | Nippondenso Co Ltd | On-vehicle antenna system |
| US7119743B2 (en) | 2003-06-09 | 2006-10-10 | Matsushita Electric Industrial Co., Ltd. | Antenna and electronic device using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2708449B2 (en) | 1998-02-04 |
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