JP2011055321A - Left-hand/right-hand system compound transmission line - Google Patents

Left-hand/right-hand system compound transmission line Download PDF

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JP2011055321A
JP2011055321A JP2009203292A JP2009203292A JP2011055321A JP 2011055321 A JP2011055321 A JP 2011055321A JP 2009203292 A JP2009203292 A JP 2009203292A JP 2009203292 A JP2009203292 A JP 2009203292A JP 2011055321 A JP2011055321 A JP 2011055321A
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conductor
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transmission line
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JP5385057B2 (en
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Shusuke Narieda
秀介 成枝
Shingo Tanaka
信吾 田中
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Yazaki Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a left-hand/right-hand system compound transmission line in which a configuration is simplified by suppressing the number of ground plates into one and a value of a capacitor C<SB>R</SB>is easily controlled while maintaining a thin shape. <P>SOLUTION: One ground plate 3 is provided which is grounded on one side of a dielectric ceramic 2 in a cubic shape. A plurality of conductor units 4 are provided inside the dielectric ceramic 2. Each of the plurality of conductor units 4 includes a U-shaped conductor plate 4a and a conductor plate 4b. In the U-shaped conductor plate 4a, a pair of parallel conductor plates which are disposed vertically to the ground plate 3 and are parallel with each other, a connecting conductor plate 4a-2 and a pair of linear conductor plates 4a-3 are formed integrally. The second conductor plate 4b is inserted between the pair of parallel conductor plates 4a-1 to be separated from the U-shaped conductor plate 4a, and another terminal of the second conductor plate 4b is connected to the ground plate 3. The plurality of conductor units are then provided side by side to be separated from each other and to become parallel with each other. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、左手／右手系複合伝送路に関するものである。   The present invention relates to a left-hand / right-handed composite transmission line.

一般に、伝送線路として用いられる同軸線路やマイクロストリップ線路等は、インダクタＬR及びキャパシタＣRを用いた等価回路で表すと、入力と出力との間にインダクタＬRが複数直列に接続され、入力−出力間とグランドとの間にキャパシタＣRが接続されたＬＣＬ構造のローパスフィルタ（ＬＰＦ）の構成をとるものであった。このようなＬＣＬ構造の伝送路は、右手系伝送路と呼ばれ、位相−周波数特性が線形となる特性を備えている。 Generally, coaxial line or microstrip line or the like used as a transmission line, expressed by an equivalent circuit using the inductor L R and a capacitor C R, an inductor L R is connected to a plurality series between an input and an output, the input - it was those taking the configuration of the low-pass filter LCL structure capacitor C R is connected between the output and between the ground (LPF). Such an LCL structure transmission line is called a right-handed transmission line, and has a characteristic in which the phase-frequency characteristic is linear.

これに対して、位相−周波数特性が非線形となる特性を備えた左手系伝送路が研究されている。この左手系伝送路は、インダクタＬL及びキャパシタＣLを用いた等価回路で表すと、入力と出力との間にキャパシタＣLが複数直列接続され、入力−出力間とグランドとの間にインダクタＬLが接続されたＣＬＣ構造のハイパスフィルタ（ＨＰＦ）の構成をとることになる。現実的には純粋なＣＬＣ構造の左手系伝送路は存在せずに、左手系伝送路と右手系伝送路とを組み合わせた左手／右手系複合伝送路を左手系伝送路として用いている。 On the other hand, a left-handed transmission line having characteristics in which phase-frequency characteristics are nonlinear has been studied. When this left-handed transmission line is represented by an equivalent circuit using an inductor L L and a capacitor C L , a plurality of capacitors C L are connected in series between the input and the output, and the inductor is connected between the input and the output and the ground. A configuration of a high-pass filter (HPF) having a CLC structure to which L L is connected is adopted. Actually, there is no left-handed transmission line having a pure CLC structure, and a left-handed / right-handed composite transmission line that combines a left-handed transmission line and a right-handed transmission line is used as a left-handed transmission line.

上記左手／右手系複合伝送路は、インダクタＬR、ＬLとキャパシタＣR、ＣLを用いた等価回路で表すと、入力と出力との間にインダクタＬR及びキャパシタＣLが複数直列接続され、入力−出力間とグランドとの間に互いに並列接続されたインダクタＬL及びキャパシタＣRが接続されている。 The left-hand / right-handed composite transmission line is represented by an equivalent circuit using inductors L R and L L and capacitors C R and C L , and a plurality of inductors L R and capacitors C L are connected in series between the input and the output. It is input - the inductor L L and a capacitor C R which are connected in parallel with each other between the output and between ground is connected.

上述したような等価回路を実現する左手／右手系複合伝送路として、例えば、図５に示された構成のものが提案されている（非特許文献１）。同図に示すように、左手／右手系複合伝送路１００は、立方体状の誘電性を有する誘電体セラミック１０１と、この誘電体セラミック１０１の表面に設けられた４枚のグランド板１０２と、この誘電体セラミック１０１内に設けられた複数の導体ユニット１０３と、を備えている。   As a left-hand / right-handed composite transmission line that realizes the above-described equivalent circuit, for example, the one shown in FIG. 5 has been proposed (Non-Patent Document 1). As shown in the figure, the left-hand / right-handed composite transmission line 100 includes a cubic dielectric dielectric ceramic 101, four ground plates 102 provided on the surface of the dielectric ceramic 101, and And a plurality of conductor units 103 provided in the dielectric ceramic 101.

上記４枚のグランド板１０２は、互いに連結されて接地されている。４枚のグランド板１０２は、誘電体セラミック１０１を囲むように誘電体セラミック１０１の図５中の正面、背面、上面及び下面にそれぞれ配置されている。上記導体ユニット１０３は、図５に示す例では２つ設けられている。この導体ユニット１０３は各々、断面Ｕ字状のＵ字導体板１０３ａと、メアンダライン導体板１０３ｂと、から構成されている。上記Ｕ字導体板１０３ａは、誘電体セラミック１０１の正面及び背面に対してそれぞれ平行に配置された一対の平行導体板１０３ａ−１と、一対の平行導体板１０３ａ−１の上面側の端部同士を連結する連結導体板１０３ａ−２と、が一体に形成されている。   The four ground plates 102 are connected to each other and grounded. The four ground plates 102 are respectively disposed on the front surface, the back surface, the top surface, and the bottom surface of the dielectric ceramic 101 in FIG. 5 so as to surround the dielectric ceramic 101. Two conductor units 103 are provided in the example shown in FIG. Each of the conductor units 103 includes a U-shaped conductor plate 103a having a U-shaped cross section and a meander line conductor plate 103b. The U-shaped conductor plate 103a is composed of a pair of parallel conductor plates 103a-1 disposed in parallel to the front and back surfaces of the dielectric ceramic 101, and ends on the upper surface side of the pair of parallel conductor plates 103a-1. Are integrally formed with a connecting conductor plate 103a-2.

上記メアンダライン導体板１０３ｂは、ジグザグに蛇行して設けられていて、上記連結板１０３ａ−２と誘電体セラミック１０１の下面に設けられたグランド板１０２との間を接続する。上述した導体ユニット１０３は、隣り合う導体ユニット１０３の平行導体板１０３ａ−１同士が互いに離間しかつ平行になるように複数並べて設けられている。   The meander line conductor plate 103b is provided to meander in a zigzag manner, and connects the connecting plate 103a-2 and the ground plate 102 provided on the lower surface of the dielectric ceramic 101. A plurality of the above-described conductor units 103 are arranged side by side so that the parallel conductor plates 103a-1 of the adjacent conductor units 103 are separated from each other and are parallel to each other.

次に、上述した構成の図５に示す左手／右手系複合伝送路１００とＬＣ等価回路との関係を図６を参照して説明する。同図に示すように、互いに隣り合う導体ユニット１０３の平行導体板１０３ａ−１間のギャップにキャパシタＣLが生じ、メアンダライン導体板１０３ｂにインダクタＬLが生じる。また、連結導体板１０３ａ−２にインダクタ１／２ＬRが生じ、この連結導体板１０３ａ−２と誘電体セラミック１０１の上面に配置されたグランド板１０２との間のギャップにキャパシタＣRが生じる。 Next, the relationship between the left-hand / right-handed composite transmission line 100 having the above-described configuration shown in FIG. 5 and the LC equivalent circuit will be described with reference to FIG. As shown in the figure, a capacitor C L is generated in the gap between the parallel conductor plates 103a-1 of the conductor units 103 adjacent to each other, and an inductor L L is generated in the meander line conductor plate 103b. Further, an inductor 1 / 2L R is generated in the connecting conductor plate 103a-2, and a capacitor CR is generated in a gap between the connecting conductor plate 103a-2 and the ground plate 102 disposed on the upper surface of the dielectric ceramic 101.

結果、上述した図５に示す左手／右手系複合伝送路１００のＬＣ等価回路は、図９に示すようになる。即ち、左手／右手系複合伝送路１００は、入力と出力との間にインダクタ１／２ＬR、インダクタ１／２ＬR、キャパシタＣL、インダクタ１／２ＬR、インダクタ１／２ＬRがこの順に直列接続され、インダクタ１／２ＬRとインダクタ１／２ＬRとの間に互いに並列接続されたキャパシタＣR及びインダクタＬLが接続される。 As a result, the LC equivalent circuit of the left-hand / right-handed composite transmission line 100 shown in FIG. 5 is as shown in FIG. That is, in the left-hand / right-handed composite transmission line 100, the inductor 1 / 2L R , the inductor 1 / 2L R , the capacitor C L , the inductor 1 / 2L R , and the inductor 1 / 2L R are connected in this order between the input and the output. A capacitor C R and an inductor L L which are connected and connected in parallel to each other are connected between the inductor 1 / 2L R and the inductor 1 / 2L R.

上述した図５に示す左手／右手系複合伝送路１００では、誘電体セラミック１０１の４面に４枚のグランド板１０２を設ける必要があり、構造が複雑になるという問題があった。また、図６に示すように上記キャパシタＣRが連結導体板１０３ａ−２と誘電体セラミック１０１の上面に配置されたグランド板１０２との間のギャップに生じているので、キャパシタＣRの値を大きくするためには、上記連結導体板１０３ａ−２の面積を大きくする必要がある。しかしながら、左手／右手系複合伝送路１００を薄型にするために上記連結導体板１０３ａ−２の面積を大きくすることができず、キャパシタＣRの値を制御することが困難である、という問題があった。 In the left-hand / right-handed composite transmission line 100 shown in FIG. 5 described above, it is necessary to provide four ground plates 102 on the four surfaces of the dielectric ceramic 101, and there is a problem that the structure becomes complicated. Further, since the occurring in the gap between the ground plate 102 disposed on the upper surface of the capacitor C R is connected conductive plates 103a-2 and the dielectric ceramic 101 as shown in FIG. 6, the value of capacitor C R In order to increase the size, it is necessary to increase the area of the connecting conductor plate 103a-2. However, it is impossible to increase the area of the connecting conductor plate 103a-2 to the left / right-handed composite transmission path 100 to the thin, it is difficult to control the value of the capacitor C R, a problem that there were.

また、上述した左手／右手系複合伝送路１００の従来例として、例えば、図７に示された構成のものも提案されている（非特許文献２）。同図に示すように、左手／右手系複合伝送路１００は、立方体状の誘電性を有する誘電体セラミック１０１と、この誘電体セラミック１０１の表面に設けられた４枚のグランド板１０２と、この誘電体セラミック１０１内に設けられた複数の導体ユニット１０３と、出力ストリップライン１０４と、入力ストリップライン１０５と、を備えている。   Further, as a conventional example of the above-described left-hand / right-handed composite transmission line 100, for example, a configuration shown in FIG. 7 has been proposed (Non-Patent Document 2). As shown in the figure, the left-hand / right-handed composite transmission line 100 includes a cubic dielectric dielectric ceramic 101, four ground plates 102 provided on the surface of the dielectric ceramic 101, and A plurality of conductor units 103 provided in the dielectric ceramic 101, an output strip line 104, and an input strip line 105 are provided.

上記４枚のグランド板１０２は、互いに連結されて接地されている。４枚のグランド板１０２は、誘電体セラミック１０１を囲むように誘電体セラミック１０１の図７中の正面、背面、上面及び下面にそれぞれ配置されている。上記導体ユニット１０３は、図７に示す例では２つ設けられている。この導体ユニット１０３は各々、断面Ｕ字状のＵ字導体板１０３ａと、線状導体板１０３ｃと、から構成されている。Ｕ字導体板１０３ａは、誘電体セラミック１０１の上面及び下面に対してそれぞれ平行に配置された一対の平行導体板１０３ａ−１と、この一対の平行導体板１０３ａ−１の正面側の端部同士を連結する連結導体板１０３ａ−２と、が一体に形成されている。   The four ground plates 102 are connected to each other and grounded. The four ground plates 102 are respectively disposed on the front surface, the back surface, the top surface, and the bottom surface of the dielectric ceramic 101 in FIG. 7 so as to surround the dielectric ceramic 101. In the example shown in FIG. 7, two conductor units 103 are provided. Each of the conductor units 103 includes a U-shaped conductor plate 103a having a U-shaped cross section and a linear conductor plate 103c. The U-shaped conductor plate 103a includes a pair of parallel conductor plates 103a-1 disposed in parallel to the upper surface and the lower surface of the dielectric ceramic 101, and ends on the front side of the pair of parallel conductor plates 103a-1. Are integrally formed with a connecting conductor plate 103a-2.

上記線状導体板１０３ｃは、直線状に設けられていて、Ｕ字導体板１０３ａと誘電体セラミック１０１の正面に設けられたグランド板１０２との間を接続する。上述した導体ユニット１０３は、隣り合う導体ユニット１０３の平行導体板１０３ａ−１同士が互いに離間しかつ平行になるように複数並べて設けられている。上記出力ストリップライン１０４は、下面側に設けられた導体ユニット１０３の下面側の平行導体板１０３ａ−１から突出して設けられている。上記入力ストリップライン１０５は、上面側に設けられた導体ユニット１０３の上面側の平行導体板１０３ａ−１から突出して設けられている。   The linear conductor plate 103 c is provided in a straight line and connects the U-shaped conductor plate 103 a and the ground plate 102 provided in front of the dielectric ceramic 101. A plurality of the above-described conductor units 103 are arranged side by side so that the parallel conductor plates 103a-1 of the adjacent conductor units 103 are separated from each other and are parallel to each other. The output strip line 104 is provided so as to protrude from the parallel conductor plate 103a-1 on the lower surface side of the conductor unit 103 provided on the lower surface side. The input strip line 105 is provided so as to protrude from the parallel conductor plate 103a-1 on the upper surface side of the conductor unit 103 provided on the upper surface side.

次に、上述した構成の図７に示す左手／右手系複合伝送路１００とＬＣ等価回路との関係を図８を参照して説明する。同図に示すように、互いに隣り合う導体ユニット１０３の平行導体板１０３ａ−１間のギャップにキャパシタＣLが生じ、線状導体板１０３ｃにインダクタＬLが生じる。また、平行導体板１０３ａ−１にインダクタ１／２ＬRが生じ、連結導体板１０３ａ−２と誘電体セラミック１０１の正面に配置されたグランド板１０２との間のギャップにキャパシタＣRが生じる。結果、上述した図７に示す左手／右手系複合伝送路１００のＬＣ等価回路は、図５に示す左手／右手系複合伝送路１００と同様に、図９に示すようになる。 Next, the relationship between the left-hand / right-handed composite transmission line 100 having the above-described configuration shown in FIG. 7 and the LC equivalent circuit will be described with reference to FIG. As shown in the figure, a capacitor C L is generated in the gap between the parallel conductor plates 103a-1 of the conductor units 103 adjacent to each other, and an inductor L L is generated in the linear conductor plate 103c. The inductor 1 / 2L R occurs in parallel conductive plates 103a-1, the capacitor C R to the gap between the ground plate 102 disposed in front of the connecting conductor plate 103a-2 and the dielectric ceramic 101 occurs. As a result, the LC equivalent circuit of the left-hand / right-handed composite transmission line 100 shown in FIG. 7 is as shown in FIG. 9, similar to the left-hand / right-handed composite transmission line 100 shown in FIG.

そして、上述した図７に示す左手／右手系複合伝送路１００も、図５と同様に、誘電体セラミック１０１の４面に４枚のグランド板１０２を設ける必要があり、構造が複雑になるという問題があった。また、キャパシタＣRは、連結導体板１０３ａ−２と誘電体セラミック１０１の正面に配置されたグランド板１０２との間のギャップに生じているので、キャパシタＣRを大きくするには連結導体板１０３ａ−２を大きくする必要がある。しかしながら、左手／右手系複合伝送路１００を薄型にするためには、上記連結導体板１０３ａ−２の面積を大きく取ることができず、キャパシタＣRの値を制御することが困難である、という問題があった。 The left-hand / right-handed composite transmission line 100 shown in FIG. 7 described above also requires four ground plates 102 on the four surfaces of the dielectric ceramic 101, as in FIG. There was a problem. The capacitor C R, since occurred in the gap between the ground plate 102 disposed in front of the connecting conductor plate 103a-2 and the dielectric ceramic 101, in order to increase the capacitor C R is connected conductive plates 103a -2 needs to be increased. However, in order to the left / right-handed composite transmission path 100 in a thin can not take a large area of the connecting conductor plate 103a-2, it is difficult to control the value of the capacitor C R, that There was a problem.

Y.Horii,C.Caloz and T.Itoh,"Super-compact multilayered left-handed transmission line and diplexer application,"IEEE Trans.Microwave Theory and Techinques,vol.53,pp.1527-1534.Apr.2005Y. Horii, C. Caloz and T. Itoh, "Super-compact multilayered left-handed transmission line and diplexer application," IEEE Trans. Microwave Theory and Techinques, vol.53, pp.1527-1534.Apr.2005 Y.horii,A. Tanaka, T. Hayashi and Y .IIDA ," A compact multilayered wideband bandpass filter exhibuting left-handed and right-handed behaviors,"IEICE Trans.Electron., vol E89-C,pp.1348-1350,2006.Y.horii, A. Tanaka, T. Hayashi and Y .IIDA, "A compact multilayered wideband bandpass filter exhibuting left-handed and right-handed behaviors," IEICE Trans.Electron., Vol E89-C, pp.1348-1350 , 2006.

そこで、本発明は、グランド板を１枚にして構成を簡単にすると共に、薄型を保ちつつ簡単にキャパシタＣRの値を制御することができる左手／右手系複合伝送路を提供することを課題とする。 The present invention aims to provide as well as simplify the configuration by the ground plate on one, the left / right-handed composite transmission path capable of controlling the value of easily capacitor C R while maintaining a thin And

上述した課題を解決するためになされた請求項１記載の発明は、接地された１枚のグランド板と、（ａ）前記グランド板に対してそれぞれ垂直に配置された互いに平行な一対の平行導体板、前記一対の平行導体板の前記グランド板から離れた側の端部同士を連結する連結導体板、及び、前記一対の平行導体板の前記グランド板側の端部と前記グランド板との間をそれぞれ接続する一対の線状導体板、が一体に形成された断面Ｕ字状の第１導体板と、（ｂ）一端が、前記一対の平行導体板に対して平行となり、かつ、前記第１導体板と離間するように、前記一対の平行導体板間に挿入されると共に他端がグランド板に接続された第２導体板と、から構成される複数の導体ユニットと、を備え、前記複数の導体ユニットが、隣り合う導体ユニットの平行導体板同士が互いに離間しかつ平行になるように複数並べて設けられていることを特徴とする左手／右手系複合伝送路に存する。   The invention according to claim 1, which has been made to solve the above-described problem, includes a grounded ground plate, and (a) a pair of parallel conductors arranged in parallel to each other and perpendicular to the ground plate. A connecting conductor plate that connects ends of the pair of parallel conductor plates on the side away from the ground plate, and between the ends of the pair of parallel conductor plates on the ground plate side and the ground plate A first conductor plate having a U-shaped cross section integrally formed with a pair of linear conductor plates that respectively connect to each other, (b) one end is parallel to the pair of parallel conductor plates, and the first A plurality of conductor units each including a second conductor plate inserted between the pair of parallel conductor plates and having the other end connected to the ground plate so as to be separated from one conductor plate, Multiple conductor units are adjacent conductor units It lies to the left / right-handed composite transmission path, characterized in that provided side by side a plurality as parallel conductive plate each other is spaced apart and parallel.

以上説明したように請求項１記載の発明によれば、第２導体板を設けることにより、平行導体板と第２導体板との間のギャップにキャパシタＣRが生じる。従って、グランド板を１枚にすることができる。また、キャパシタＣRの値を制御するには平行導体板と第２導体板とが重なる面積を制御すればよく、薄型を保ちつつキャパシタＣRの値を簡単に制御することができる。 As described above, according to the first aspect of the present invention, by providing the second conductor plate, the capacitor CR is generated in the gap between the parallel conductor plate and the second conductor plate. Therefore, one ground plate can be used. Further, it is sufficient control the area overlapping parallel conductive plate and the second conductive plate to control the value of capacitor C R, it is possible to easily control the value of capacitor C R while maintaining a thin.

（Ａ）は本発明の左手／右手系複合伝送路の一実施形態を示す斜視図であり、（Ｂ）は（Ａ）に示す左手／右手系複合伝送路の正面図であり、（Ｃ）は（Ａ）に示す左手／右手系複合伝送路の側面図である。(A) is a perspective view showing an embodiment of the left-hand / right-handed composite transmission line of the present invention, (B) is a front view of the left-hand / right-handed composite transmission line shown in (A), and (C). FIG. 4 is a side view of the left-hand / right-handed composite transmission line shown in FIG. 図１に示す左手／右手系複合伝送路とＬＣ等価回路との関係を示す説明図である。FIG. 2 is an explanatory diagram showing a relationship between a left-hand / right-handed composite transmission line and an LC equivalent circuit shown in FIG. 1. 図１に示す左手／右手系複合伝送路のＬＣ等価回路を示す回路図である。FIG. 2 is a circuit diagram showing an LC equivalent circuit of the left-hand / right-handed composite transmission line shown in FIG. 1. 図１に示す左手／右手系複合伝送路の周波数−位相特性を示すグラフである。It is a graph which shows the frequency-phase characteristic of the left-handed / right-handed composite transmission line shown in FIG. （Ａ）は従来の左手／右手系複合伝送路の一例を示す斜視図であり、（Ｂ）は（Ａ）に示す左手／右手系複合伝送路の正面図であり、（Ｃ）は（Ａ）に示す左手／右手系複合伝送路の側面図である。(A) is a perspective view showing an example of a conventional left-hand / right-handed composite transmission line, (B) is a front view of the left-hand / right-handed composite transmission line shown in (A), and (C) is (A 2) is a side view of the left-hand / right-handed composite transmission line shown in FIG. 図５に示す左手／右手系複合伝送路とＬＣ等価回路との関係を示す説明図である。FIG. 6 is an explanatory diagram showing a relationship between a left-hand / right-handed composite transmission line shown in FIG. 5 and an LC equivalent circuit. （Ａ）は従来の左手／右手系複合伝送路の一例を示す斜視図であり、（Ｂ）は（Ａ）に示す左手／右手系複合伝送路の上面図であり、（Ｃ）は（Ａ）に示す左手／右手系複合伝送路の側面図である。(A) is a perspective view showing an example of a conventional left-hand / right-handed composite transmission line, (B) is a top view of the left-hand / right-handed composite transmission line shown in (A), and (C) is (A 2) is a side view of the left-hand / right-handed composite transmission line shown in FIG. 図７に示す左手／右手系複合伝送路と等価回路との関係を示す説明図である。FIG. 8 is an explanatory diagram showing a relationship between the left-hand / right-handed composite transmission line shown in FIG. 7 and an equivalent circuit. 図５及び図７に示す左手／右手系複合伝送路のＬＣ等価回路を示す回路図である。FIG. 8 is a circuit diagram showing an LC equivalent circuit of the left-hand / right-handed composite transmission line shown in FIGS. 5 and 7.

以下、本発明の実施の形態を図面に基づいて説明する。図１に示すように、左手/右手系複合伝送路１は、立方体状の誘電性を有する誘電体セラミック２と、この誘電体セラミック２の表面に設けられた１枚のグランド板３と、この誘電体セラミック２内に設けられた複数の導体ユニット４と、を備えている。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, a left-hand / right-handed composite transmission line 1 includes a dielectric ceramic 2 having a cubic dielectric property, a single ground plate 3 provided on the surface of the dielectric ceramic 2, and And a plurality of conductor units 4 provided in the dielectric ceramic 2.

上記１枚のグランド板３は、誘電体セラミック２の一面に設けられている。本実施形態では、１枚のグランド板３は、誘電体セラミック２の図１中の下面に設けられている。上記導体ユニット４は、本実施形態では２つ設けられている。この導体ユニット４は各々、断面Ｕ字状のＵ字導体板４ａ（第１導体板）と、平面視四角形状の導体板４ｂ（第２導体板）と、を備えている。Ｕ字導体板４ａは、グランド板３に対してそれぞれ垂直に配置された互いに平行な一対の平行導体板４ａ−１と、一対の平行導体板４ａ−１のグランド板３から離れた側の端部同士を連結する連結導体板４ａ−２と、一対の平行導体板４ａ−１のグランド板３側の端部−グランド板３の間をそれぞれ接続する一対の線状導体板４ａ−３と、が一体に形成されている。   The single ground plate 3 is provided on one surface of the dielectric ceramic 2. In the present embodiment, one ground plate 3 is provided on the lower surface of the dielectric ceramic 2 in FIG. In the present embodiment, two conductor units 4 are provided. Each of the conductor units 4 includes a U-shaped conductor plate 4a (first conductor plate) having a U-shaped cross section and a conductor plate 4b (second conductor plate) having a square shape in plan view. The U-shaped conductor plate 4a includes a pair of parallel conductor plates 4a-1 that are arranged perpendicular to the ground plate 3 and parallel to each other, and ends of the pair of parallel conductor plates 4a-1 on the side away from the ground plate 3. A pair of linear conductor plates 4a-2 that connect between the end portions of the pair of parallel conductor plates 4a-1 on the side of the ground plate 3 and the ground plate 3, respectively. Are integrally formed.

上記導体板４ｂは、一端が、一対の平行導体板４ａ−１に対して平行となり、かつ、Ｕ字導体板４ａと離間するように、一対の平行導体板４ａ−１間に挿入されると共に他端がグランド板３に接続されている。上述した複数の導体ユニット４は、隣り合う導体ユニット４の平行導体板４ａ−１同士が互いに離間しかつ平行に設けられている。   The conductor plate 4b is inserted between the pair of parallel conductor plates 4a-1 so that one end thereof is parallel to the pair of parallel conductor plates 4a-1 and is separated from the U-shaped conductor plate 4a. The other end is connected to the ground plate 3. In the plurality of conductor units 4 described above, the parallel conductor plates 4a-1 of the adjacent conductor units 4 are provided apart from each other and in parallel.

次に、上述した構成の図１に示す左手／右手系複合伝送路１とＬＣ等価回路との関係を図２を参照して説明する。同図に示すように、互いに隣り合う導体ユニット４の平行導体板４ａ−１間のギャップにキャパシタＣLが生じる。また、導体板４ｂにそれぞれインダクタＬLが生じる。さらに、平行導体板４ａ−１と導体板４ｂとの間のギャップにそれぞれキャパシタＣRが生じ、連結導体板４ａ−２にインダクタＬRが生じる。 Next, the relationship between the left-hand / right-handed composite transmission line 1 and the LC equivalent circuit shown in FIG. 1 configured as described above will be described with reference to FIG. As shown in the figure, a capacitor CL is generated in the gap between the parallel conductor plates 4a-1 of the conductor units 4 adjacent to each other. In addition, an inductor L L is generated in each of the conductor plates 4b. Furthermore, each resulting capacitor C R is the gap between the parallel conductive plates 4a-1 and the conductor plate 4b, the inductor L R is generated in the connection conductor plate 4a-2.

結果、図１に示す左手／右手系複合伝送路１のＬＣ等価回路は図３に示すようになる。即ち、入力と出力との間にインダクタＬR、キャパシタＣL、インダクタＬRがこの順に直列に接続され、インダクタＬR−キャパシタＣL間とグランドとの間に互いに並列接続されたキャパシタＣR及びインダクタＬLが接続される。 As a result, the LC equivalent circuit of the left / right handed composite transmission line 1 shown in FIG. 1 is as shown in FIG. That is, the inductor L R , the capacitor C L , and the inductor L R are connected in series between the input and the output in this order, and the capacitor C R connected in parallel between the inductor L R and the capacitor C L and the ground. And the inductor L L are connected.

次に、本発明者らは、上述した図１に示す左手／右手系複合伝送路１を作製し、作製した左手／右手系複合伝送路１に対する入力信号の周波数を０〜２．５ＧＨｚの範囲で変化させたときの出力信号の位相を測定した。結果を図４に示す。同図から明らかなように、図１に示す左手／右手計複合伝送路１の位相特性は非線形となっていることから、左手系媒体の特徴を有していることが分かる。   Next, the present inventors produced the left-hand / right-handed composite transmission line 1 shown in FIG. 1 and set the frequency of the input signal to the produced left-hand / right-handed composite transmission line 1 in the range of 0 to 2.5 GHz. The phase of the output signal was measured when it was changed with. The results are shown in FIG. As can be seen from the figure, the phase characteristic of the left-hand / right-hand meter combined transmission line 1 shown in FIG. 1 is non-linear.

上述した構成の左手／右手系複合伝送路１によれば、導体板４ｂを設けることにより、平行導体板４ａ−１と導体板４ｂとの間のギャップにキャパシタＣRが生じる。従って、グランド板３を１枚にすることができる。また、キャパシタＣRの値を制御するには平行導体板４ａ−１と導体板４ｂとが重なる面積を制御すればよく、薄型を保ちつつキャパシタＣRの値を簡単に制御することができる。 According to the left / right-handed composite transmission path 1 of the above configuration, by providing the conductor plate 4b, a capacitor C R is generated in the gap between the parallel conductive plates 4a-1 and the conductor plate 4b. Therefore, the ground plate 3 can be made into one sheet. Further, it is sufficient control the area overlapping parallel conductive plates 4a-1 and the conductor plate 4b to control the value of capacitor C R, it is possible to easily control the value of capacitor C R while maintaining a thin.

なお、上述した実施形態によれば、左手／右手系複合伝送路１は２つの導体ユニット４から構成されていたが、本発明はこれに限ったものではない。導体ユニット４としては、２つ以上の複数設けられていればよい。   According to the embodiment described above, the left-hand / right-handed composite transmission line 1 is composed of the two conductor units 4, but the present invention is not limited to this. Two or more conductor units 4 may be provided.

また、前述した実施形態は本発明の代表的な形態を示したに過ぎず、本発明は、実施形態に限定されるものではない。即ち、本発明の骨子を逸脱しない範囲で種々変形して実施することができる。   Further, the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

１ 左手／右手系複合伝送路
３ グランド板
４ 導体ユニット
４ａ Ｕ字導体板（第１導体板）
４ａ−１ 平行導体板
４ａ−２ 連結導体板
４ａ−３ 線状導体板
４ｂ 導体板（第２導体板） 1 Left-hand / right-handed composite transmission line 3 Ground plate 4 Conductor unit 4a U-shaped conductor plate (first conductor plate)
4a-1 Parallel conductor plate 4a-2 Connection conductor plate 4a-3 Linear conductor plate 4b Conductor plate (second conductor plate)

Claims (1)

接地された１枚のグランド板と、
（ａ）前記グランド板に対してそれぞれ垂直に配置された互いに平行な一対の平行導体板、前記一対の平行導体板の前記グランド板から離れた側の端部同士を連結する連結導体板、及び、前記一対の平行導体板の前記グランド板側の端部と前記グランド板との間をそれぞれ接続する一対の線状導体板、が一体に形成された断面Ｕ字状の第１導体板と、（ｂ）一端が、前記一対の平行導体板に対して平行となり、かつ、前記第１導体板と離間するように、前記一対の平行導体板間に挿入されると共に他端がグランド板に接続された第２導体板と、から構成される複数の導体ユニットと、を備え、
前記複数の導体ユニットが、隣り合う導体ユニットの平行導体板同士が互いに離間しかつ平行になるように複数並べて設けられている
ことを特徴とする左手／右手系複合伝送路。 A grounded ground plate,
(A) a pair of parallel conductor plates arranged perpendicular to each of the ground plates, a connecting conductor plate for connecting ends of the pair of parallel conductor plates on the side away from the ground plate, and A first conductor plate having a U-shaped cross section integrally formed with a pair of linear conductor plates that respectively connect between the ground plate side ends of the pair of parallel conductor plates and the ground plate; (B) One end is inserted between the pair of parallel conductor plates so as to be parallel to the pair of parallel conductor plates and separated from the first conductor plate, and the other end is connected to the ground plate. A plurality of conductor units composed of the second conductor plate, and
The left-hand / right-handed composite transmission line, wherein the plurality of conductor units are provided side by side so that parallel conductor plates of adjacent conductor units are spaced apart from and parallel to each other.
JP2009203292A 2009-09-03 2009-09-03 Left / right-handed composite transmission line Expired - Fee Related JP5385057B2 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008029662A1 (en) * 2006-08-31 2008-03-13 Panasonic Corporation Transmission line resonator, high-frequency filter using the same, high-frequency module, and radio device
JP2008182598A (en) * 2007-01-25 2008-08-07 Murata Mfg Co Ltd Left-handed system transmission line, bypass filter and communication equipment

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008029662A1 (en) * 2006-08-31 2008-03-13 Panasonic Corporation Transmission line resonator, high-frequency filter using the same, high-frequency module, and radio device
JP2008182598A (en) * 2007-01-25 2008-08-07 Murata Mfg Co Ltd Left-handed system transmission line, bypass filter and communication equipment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JPN6010071055; Ｙ．Ｈｏｒｉｉ　ｅｔ　ａｌ．: '"Ｓｕｐｅｒ-Ｃｏｍｐａｃｔ　Ｍｕｌｔｉｌａｙｅｒｅｄ　Ｌｅｆｔ-Ｈａｎｄｅｄ　Ｔｒａｎｓｍｉｓｓｉｏｎ　Ｌｉｎｅ　ａｎｄ　Ｄｉｐｌｅｘｅｒ　Ａｐｐｌｉｃａｔｉｏｎ"' ＩＥＥＥ　Ｔｒａｎｓ．Ｍｉｃｒｏｗａｖｅ　ｔｈｅｏｒｙ　ａｎｄ　Ｔｅｃｈｎｉｑｕｅｓ Ｖｏｌ．５３，Ｎｏ．４, 200504, ｐｐ．１５２７-１５３４ *

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