JPS62122304A - Printed dipole antenna - Google Patents

Printed dipole antenna

Info

Publication number
JPS62122304A
JPS62122304A JP26289485A JP26289485A JPS62122304A JP S62122304 A JPS62122304 A JP S62122304A JP 26289485 A JP26289485 A JP 26289485A JP 26289485 A JP26289485 A JP 26289485A JP S62122304 A JPS62122304 A JP S62122304A
Authority
JP
Japan
Prior art keywords
stub
stubs
dipole
dipole antenna
matching
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
Application number
JP26289485A
Other languages
Japanese (ja)
Other versions
JPH0371807B2 (en
Inventor
Tadashi Numazaki
正 沼崎
Seiji Mano
真野 清司
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP26289485A priority Critical patent/JPS62122304A/en
Publication of JPS62122304A publication Critical patent/JPS62122304A/en
Publication of JPH0371807B2 publication Critical patent/JPH0371807B2/ja
Granted legal-status Critical Current

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  • Details Of Aerials (AREA)

Abstract

PURPOSE:To attain the impedance matching at the operating frequency band through the connection of a simple stub by connecting the stub made of a microstrip line where a metallic foil forming a dipole is used as the grounding conductor to a feeder joint of the dipole. CONSTITUTION:Stubs 5, 6 are connected to a reference face A-A' near the joint between dipoles 2a, 2b and parallel 2-wires 3a, 3b in parallel. Since the admittance frequency characteristic before the stubs 5, 6 are connected is not subjected to the long feeder effect, the characteristic is smaller than the frequency characteristic at a reference face B-B' and the matching with a desired voltage standing wave ratio or below is taken by connecting the stubs 5, 6. The stubs 5, 6 are formed by a microstrip line and its ground conductor is the dipoles 2b, 2a. That is, since the structure that the two stubs are connected at the reference face A-A' is adopted, the range of the impedance with a good matching is wide in comparison with one stub.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は1ンピ一ダンス整合をとるためにマイクロス
トリップ線路構成のスタブを接続したプリント化ダイポ
ールアンテナ感こ関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printed dipole antenna sensor having a microstrip line configuration stub connected thereto for one-pin one-dance matching.

〔従来の技術〕[Conventional technology]

@4図は例えば電子通信学会編、ア/テナ工学ハンドブ
ック、オーム社(昭55−10 )、p421こ示され
た従来のプリント化ダイポールアンテナの構造図で、1
1)は誘′4体板、  (2a) 、 (2b)はダイ
ポール。
Figure @4 is, for example, a structural diagram of a conventional printed dipole antenna shown in IEICE, A/THENA Engineering Handbook, Ohmsha (1980-10), p421.
1) is a dielectric plate, (2a) and (2b) are dipoles.

(3a)、 (3b)は平行2?#aであり、ダイポー
ル(2a) 、 (2o)および平行2線(准)、(3
b)は誘電体を挾んで誘4体板(1)の両面にエツチン
グICよりプリント化ざnている。第5図は第4図で示
した従来の7−リント化ダイポールアンテナの入力アド
ミタンス測定値の一例を示すスミスチャートで、Yoは
特性アドミタンス、G/Yoは規格化コンダクタンス、
B/Yoは規格化サセプタンスである。アドミタンス測
定の基準面は第4図のA−A’、εよびB−B’で、使
用周波数帯域の中心周波数をfO1下限周波数をfI、
上限周波数をf2とした。この例では基準面A −A’
からみたアドミタンスの測定値が、第4図の実線のよう
に中心周波数f。で規格化コンダクタンスが1で、ブセ
プタンスが負である場合について示している。この従来
のプリント化ダイポールアンテナのインピーダンス整合
では、ダイポールとしての放射特性を崩さないように、
すなわちダイボール(2a) 、 (2に+)の形状を
変えずにインピーダンス整合をとるためにまず基準面を
trM側で6る平行2atにうa)、 (:(b3上の
13−B’に移動する。B−B’からみたアドミタンス
は第4図の破線のように中心周波数f0ではA−A’か
らみたアドミタンスと同一であるが。
Are (3a) and (3b) parallel 2? #a, dipole (2a), (2o) and parallel two lines (quasi), (3
In b), an etching IC is printed on both sides of the dielectric plate (1) with the dielectric material in between. FIG. 5 is a Smith chart showing an example of the measured input admittance of the conventional 7-lint dipole antenna shown in FIG. 4, where Yo is the characteristic admittance, G/Yo is the normalized conductance,
B/Yo is the normalized susceptance. The reference planes for admittance measurement are A-A', ε and B-B' in Figure 4, where the center frequency of the frequency band used is fO1, the lower limit frequency is fI,
The upper limit frequency was set to f2. In this example, the reference plane A −A'
The measured value of the admittance seen from the center frequency f as shown by the solid line in Fig. 4. This shows the case where the normalized conductance is 1 and the buceptance is negative. In impedance matching of this conventional printed dipole antenna, in order not to destroy the radiation characteristics as a dipole,
In other words, in order to achieve impedance matching without changing the shape of the die ball (2a), (+), first set the reference plane on the trM side, parallel to the parallel 2at a), (:(13-B' on b3). The admittance seen from B-B' is the same as the admittance seen from A-A' at the center frequency f0 as shown by the broken line in FIG.

f、、f2でのアドミタンスは基準面の移動Cζ伴う長
給11L線効果のためにずれ、周波数特性を示すアドミ
タンス軌跡が広がっている。
The admittance at f, , f2 is shifted due to the long 11L line effect accompanying the movement Cζ of the reference plane, and the admittance locus showing the frequency characteristic is widened.

〔発明が解決しようとする問題点] 第6図は上記のような従来のプリント化ダイポールアン
テナのインピーダンス整合法を示す図で(4a) 、 
(4b)は基準面B−B’に並列に接続した、7 +7
ント化平行2線先端開放の容量性のスタブである。
[Problems to be Solved by the Invention] Figure 6 is a diagram showing an impedance matching method for the conventional printed dipole antenna as described above (4a).
(4b) is connected in parallel to the reference plane B-B', 7 +7
This is a capacitive stub with two parallel wires and an open end.

B−B’にこのような整合スタブを接続する方法では、
長給電縄効果により周波数特性が広がっているので、使
用周波数帯域で所望の電圧定在波比以下に整合をとれな
いという問題点があった。また、この周波数特性を小さ
くして整合をとるためには整合回路であるスタブを長く
1幅を広くするなど形状を複雑にすることが必要で、所
定の誘電体板+1)の面積内に収められないなとの問題
点もあった。
In the method of connecting such a matching stub to B-B',
Since the frequency characteristics are broadened due to the long feeding rope effect, there is a problem in that it is not possible to match the voltage standing wave ratio below a desired voltage in the frequency band used. In addition, in order to reduce this frequency characteristic and achieve matching, it is necessary to make the stub, which is a matching circuit, longer and wider. There was also the problem that I couldn't do it.

この発明は上記のような問題点を解消するために0戸さ
れたもので、簡単なスタブの接続によって使用周波数帯
域でインピーダンス整合をとることができるプリント化
ダイポールアンテナを得ることを目的とする。
The present invention was developed in order to solve the above-mentioned problems, and an object of the present invention is to obtain a printed dipole antenna that can achieve impedance matching in the frequency band used by simple stub connections.

〔問題点を解決するための手段〕[Means for solving problems]

この発明に係るプリント化ダイポールアンテナは、ダイ
ポールの給電線接続部に、ダイポールを構成する盆属箔
を地導体に使用したマイクロストリップ線路のスタブを
接続したものである。
In the printed dipole antenna according to the present invention, a stub of a microstrip line using the metal foil constituting the dipole as a ground conductor is connected to the feed line connection portion of the dipole.

〔作 用] この発明に2けるマイクロストリング線路のスタブはダ
イポールに最も近い部分に接続されるから、長給電線効
果によるアドミタンス周波数特性の広がりの影響か無く
なる。
[Function] Since the stub of the microstring line according to the second aspect of the present invention is connected to the part closest to the dipole, the influence of the spread of admittance frequency characteristics due to the long feed line effect is eliminated.

〔実施例] 以下、この発明の一実施例を説明する。it図に2いて
、C1)は#電体板、(2a) 、 (2b)はダイポ
ール、(謳)、(3b)は平行2線、 (5)、 (6
)はマイクロスリップ線路構成の先端開放の容量性スタ
ブである。第2図はこの発明による第1図の1す/ト化
ダイポールアンテナの入力アドミタンスを示す図で、測
定基準面はA−A’である。
[Example] An example of the present invention will be described below. In the IT diagram 2, C1) is # electric board, (2a), (2b) are dipoles, (single), (3b) are two parallel lines, (5), (6
) is an open-ended capacitive stub with a microslip line configuration. FIG. 2 is a diagram showing the input admittance of the single-tooth dipole antenna of FIG. 1 according to the present invention, and the measurement reference plane is AA'.

このプリント化ダイポールアンテナでは、ダイボー1に
、 (2a) 、 (2o)と平行2m(3a)、(コ
t)の接続部付近の基準面A−A’にスタブ(5) 、
 (6)を並列に接続している・従って、スタブ1fi
l e (6)を接続する前のアドミタンス周波数特性
は、長給電線効果を受けていないので、基準面B−B’
でみた周波数特性よりも小さく、第2図で示したように
スタブ15) 、 (6)を接続して所望の電圧定在波
比以下墨こ整合をとることができる。スタブ(51およ
び(6)はマイクロストリップ線路で構成されて2つ、
その地導体はダイポール(2fi)gよび(2a)であ
る。すなわち基準I@A −A’に2個のスタブを接続
できる構造になっているので、1個の場合に比べて整合
のとれるインピーダンスの範囲が広いという利点もある
In this printed dipole antenna, a stub (5) is attached to the reference plane A-A' near the connection point of (2a), (2o) and 2m (3a) parallel to (2o).
(6) are connected in parallel・Therefore, stub 1fi
The admittance frequency characteristic before connecting l e (6) is not affected by the long feed line effect, so the reference plane B-B'
As shown in FIG. 2, the stubs 15) and (6) can be connected to achieve black-black matching below the desired voltage standing wave ratio. Two stubs (51 and (6) are composed of microstrip lines,
The ground conductors are dipoles (2fi)g and (2a). That is, since the structure is such that two stubs can be connected to the reference I@A-A', there is an advantage that the range of impedance that can be matched is wider than in the case of one stub.

第3図はこの発明の他の実施例を示す図であり。FIG. 3 is a diagram showing another embodiment of the invention.

(1)は誘電体板、 (2a) 、 (2b)はダイボ
ーA/、<:h)、 (3b)は平行2線、151 、
 (6)はスタブ、(7)は反射板である。
(1) is a dielectric plate, (2a), (2b) is Daibo A/, <:h), (3b) is two parallel lines, 151,
(6) is a stub, and (7) is a reflector.

このプリント化ダイポールアンテナは反射板(7)をダ
イネール(2a)、 (2fi)の後方に取り付けて片
面放射としたもので、この場合にも第1図で示したプリ
ント化ダイポールアンテナと同様に、使用周波数帯域で
インピーダンス整合をとることができる。
This printed dipole antenna has a reflector (7) attached to the rear of the dynare (2a), (2fi) to emit radiation from one side. In this case, as well as the printed dipole antenna shown in Fig. 1, Impedance matching can be achieved in the frequency band used.

な31以上はスタブとして先端開放のものを接続する場
合について説明したが、先端短絡のスタブを用いる場合
についても全く同様にして実施できる。また、スタフは
ダイポ−ル部分だけの場合について説明したが、ダイポ
ール部分に加えて、平行2 m、あるいはざら−〇電源
側の給′JIR上にスタブを設けてもよい。
31 and above have been described for the case where a stub with an open end is connected, but it can be carried out in exactly the same way even when a stub with a short-circuited end is used. In addition, although the case where the stub is provided only at the dipole portion has been described, in addition to the dipole portion, a stub may be provided 2 m in parallel or on the supply JIR on the side of the power source.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、この発明によれば1ンビ一ダンス
整合用のスタブをダイポール部分にプリント化して構成
できるから、整合回路を簡単番こ。
As explained above, according to the present invention, the stub for 1-ambidance matching can be printed on the dipole portion, thereby simplifying the construction of the matching circuit.

狭い面積で得られ、プリント化ダイポールアンテナの小
形化の点で大きな効果がある。
It can be obtained in a small area and has a great effect in reducing the size of printed dipole antennas.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はこの発明によるプリント化ダイポールアンテナ
の構造図、第2図は入力アドミタンスの特性図、第3図
4この発明の他の実施例を示す構造図、第4図は従来の
プリント化ダイポールアンテナの構造図、第5図は入力
アドミタンスの特性図、第6図は従来のプリント化ダイ
ポールアンテナの整合用スタブの接続構造図である。 図番こ2いて、(1)は誘電体板、  (2a)、 (
2b)はダイポール、(3a) 、 (3b)は平行2
綴、+51 、 (6)はxpプである。 な8、図中同一、又は相当部分易こは同一符号を付しで
ある。
Figure 1 is a structural diagram of a printed dipole antenna according to the present invention, Figure 2 is a characteristic diagram of input admittance, Figure 3 is a structural diagram showing another embodiment of the present invention, and Figure 4 is a conventional printed dipole antenna. FIG. 5 is a diagram of the structure of the antenna, FIG. 5 is a characteristic diagram of input admittance, and FIG. 6 is a diagram of the connection structure of a matching stub of a conventional printed dipole antenna. The figure numbers are 2, (1) is a dielectric plate, (2a), (
2b) is a dipole, (3a) and (3b) are parallel 2
Tsuzuri, +51, (6) is xppu. 8. Identical or equivalent parts in the figures are designated by the same reference numerals.

Claims (1)

【特許請求の範囲】[Claims] 誘電体板の両方の面に、給電部である平行2線と、それ
に続く放射部である板状ダイポールとをプリント化した
プリント化ダイポールアンテナにおいて、上記平行2線
と上記ダイポールの接続部の近傍に、上記ダイポールを
地導体としたマイクロストリップ線路で構成した先端開
放、又は先端短絡のスタブを接続してインピーダンスの
整合をとったことを特徴とするプリント化ダイポールア
ンテナ。
In a printed dipole antenna in which two parallel wires as a power feeding section and a plate-shaped dipole as a radiating section are printed on both sides of a dielectric plate, near the connection between the two parallel wires and the dipole. A printed dipole antenna characterized in that impedance matching is achieved by connecting a stub with an open end or a short-circuit end formed of a microstrip line using the dipole as a ground conductor.
JP26289485A 1985-11-21 1985-11-21 Printed dipole antenna Granted JPS62122304A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26289485A JPS62122304A (en) 1985-11-21 1985-11-21 Printed dipole antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26289485A JPS62122304A (en) 1985-11-21 1985-11-21 Printed dipole antenna

Publications (2)

Publication Number Publication Date
JPS62122304A true JPS62122304A (en) 1987-06-03
JPH0371807B2 JPH0371807B2 (en) 1991-11-14

Family

ID=17382090

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26289485A Granted JPS62122304A (en) 1985-11-21 1985-11-21 Printed dipole antenna

Country Status (1)

Country Link
JP (1) JPS62122304A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01232802A (en) * 1988-03-14 1989-09-18 Mitsubishi Electric Corp Antenna system
JPH05145324A (en) * 1991-09-26 1993-06-11 Mitsubishi Electric Corp Antenna system
JPH05167329A (en) * 1991-12-16 1993-07-02 Sharp Corp Four-wire helical antenna
WO1994003940A1 (en) * 1992-08-07 1994-02-17 Deltec New Zealand Limited A dipole
JPH06104627A (en) * 1992-09-17 1994-04-15 Yagi Antenna Co Ltd Antenna system
FR2840115A1 (en) * 2002-05-27 2003-11-28 Samsung Thales Co Ltd Wideband planar antenna for use in wireless communication system, has upper and lower printed circuit board plates each carrying dipole radiating elements provided with branches positioned on either surfaces of plate
EP1755193A1 (en) * 2005-08-19 2007-02-21 Electronics And Telecommunications Research Institute Stub printed dipole antenna (SPDA) having wide-band and multi-band characteristics and method of designing the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3645239B2 (en) * 2002-09-06 2005-05-11 シャープ株式会社 Dipole antenna, tag and moving object identification system using the same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01232802A (en) * 1988-03-14 1989-09-18 Mitsubishi Electric Corp Antenna system
JPH05145324A (en) * 1991-09-26 1993-06-11 Mitsubishi Electric Corp Antenna system
JPH05167329A (en) * 1991-12-16 1993-07-02 Sharp Corp Four-wire helical antenna
WO1994003940A1 (en) * 1992-08-07 1994-02-17 Deltec New Zealand Limited A dipole
AU670130B2 (en) * 1992-08-07 1996-07-04 Andrew Corporation A dipole
JPH06104627A (en) * 1992-09-17 1994-04-15 Yagi Antenna Co Ltd Antenna system
FR2840115A1 (en) * 2002-05-27 2003-11-28 Samsung Thales Co Ltd Wideband planar antenna for use in wireless communication system, has upper and lower printed circuit board plates each carrying dipole radiating elements provided with branches positioned on either surfaces of plate
US6844851B2 (en) 2002-05-27 2005-01-18 Samsung Thales Co., Ltd. Planar antenna having linear and circular polarization
EP1755193A1 (en) * 2005-08-19 2007-02-21 Electronics And Telecommunications Research Institute Stub printed dipole antenna (SPDA) having wide-band and multi-band characteristics and method of designing the same

Also Published As

Publication number Publication date
JPH0371807B2 (en) 1991-11-14

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