JP2003218627A - Waveguide antenna - Google Patents
Waveguide antennaInfo
- Publication number
- JP2003218627A JP2003218627A JP2002018281A JP2002018281A JP2003218627A JP 2003218627 A JP2003218627 A JP 2003218627A JP 2002018281 A JP2002018281 A JP 2002018281A JP 2002018281 A JP2002018281 A JP 2002018281A JP 2003218627 A JP2003218627 A JP 2003218627A
- Authority
- JP
- Japan
- Prior art keywords
- waveguide antenna
- frequency
- strip line
- low
- antenna
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、導波管アンテナ、
特にストリップ線路を併用した導波管アンテナに関す
る。TECHNICAL FIELD The present invention relates to a waveguide antenna,
In particular, it relates to a waveguide antenna that also uses a strip line.
【０００２】[0002]
【従来の技術】この種の導波管アンテナに関する従来技
術の例が、特許公報第2581293号に「中央給電スロット
アレイ空中線」として記載されている。このスロットア
レイ空中線は、方形導波管の給電部付近の高周波放射用
スロットをマイクロストリップ空中線に代えることによ
り、伝送モードが不安定なこの部分のスロットを設計す
る必要を無くし、これにより空中線の設計の容易化を図
ったものである。給電回路はトリプレート構造とされ、
その表面にはマイクロストリップ回路が形成され、マイ
クロストリップ空中線に分配して給電される。2. Description of the Related Art An example of the prior art relating to this type of waveguide antenna is described in Japanese Patent Publication No. 2581293 as "Central feeding slot array antenna". This slot array antenna eliminates the need to design a slot in this part where the transmission mode is unstable, by replacing the high frequency radiation slot near the feeding part of the rectangular waveguide with a microstrip antenna, which results in a design of the antenna. It is intended to facilitate. The power supply circuit has a triplate structure,
A microstrip circuit is formed on the surface of the microstrip, and power is distributed to the microstrip antenna.
【０００３】[0003]
【発明が解決しようとする課題】ところで、ロケット等
に搭載されにより導波管アンテナにあっては、ロケット
の大型化に伴い、通信回線確保のためにアンテナ数の増
加が必要であるが、機体構造の複雑化により、アンテナ
取付け可能位置は減少しているため、アンテナの実装ス
ペースが不足している。By the way, in the case of a waveguide antenna mounted on a rocket or the like, it is necessary to increase the number of antennas for securing a communication line as the rocket becomes larger. Due to the complexity of the structure, the number of positions where the antenna can be attached has decreased, and the mounting space for the antenna is insufficient.
【０００４】上述の従来技術は、空中線の設計を容易化
する目的でマイクロストリップ線路を導入しているが、
これによってアンテナの実装スペース不足が解消される
わけではない。The above-mentioned prior art introduces a microstrip line for the purpose of facilitating antenna design.
This does not eliminate the lack of mounting space for the antenna.
【０００５】そこで、本発明の目的は、小型・軽量化を
図った導波管アンテナを提供することにある。Therefore, an object of the present invention is to provide a waveguide antenna which is small and lightweight.
【０００６】[0006]
【課題を解決するための手段】本発明の導波管アンテナ
は、周波数の異なる２つの導波管アンテナと、各導波管
アンテナに給電するためのストリップ線路を内蔵した誘
電体とを、誘電体が２つの導波管アンテナの間に位置す
るようにスタックし、各導波管アンテナとストリップ線
路は結合孔で接続されたことを特徴とするものである。A waveguide antenna according to the present invention comprises two waveguide antennas having different frequencies and a dielectric body containing a strip line for feeding each waveguide antenna. It is characterized in that the body is stacked so as to be located between two waveguide antennas, and each waveguide antenna and the strip line are connected by a coupling hole.
【０００７】より具体的には、第１の本発明の導波管ア
ンテナは、低周波用導波管アンテナ（図１の１）と、低
周波用導波管アンテナの上に搭置され、低周波用導波管
アンテナに給電するための低周波給電用ストリップ線路
（図１の６）を内蔵した誘電体（図１の３）と、この誘
電体の上に搭置された電磁波隔離用の導電板（図１の
５）と、導電板の上に搭置され、高周波用導波管アンテ
ナ（図１の２）に給電するための高周波給電用ストリッ
プ線路（図１の７）を内蔵した誘電体（図１の４）と、
この誘電体の上に搭置された高周波用導波管アンテナと
で構成され、低周波用導波管アンテナと低周波給電用ス
トリップ線路、および高周波用導波管アンテナと高周波
給電用ストリップ線路は、それぞれ結合孔（図２の８，
図３の９）を介して接続されることを特徴とする。More specifically, the waveguide antenna according to the first aspect of the present invention is mounted on the low frequency waveguide antenna (1 in FIG. 1) and the low frequency waveguide antenna, A dielectric (3 in FIG. 1) containing a low-frequency power supply strip line (6 in FIG. 1) for supplying power to the low-frequency waveguide antenna, and an electromagnetic wave isolation device mounted on the dielectric. Built-in conductive plate (5 in FIG. 1) and a strip line for high frequency power supply (7 in FIG. 1) mounted on the conductive plate to supply power to the high frequency waveguide antenna (2 in FIG. 1). The dielectric (4 in FIG. 1),
It is composed of a high-frequency waveguide antenna mounted on this dielectric, and the low-frequency waveguide antenna and the low-frequency feeding strip line, and the high-frequency waveguide antenna and the high-frequency feeding strip line are , Each of the coupling holes (8 in FIG. 2,
It is characterized in that it is connected via 9) in FIG.
【０００８】また、第２の本発明の導波管アンテナは、
低周波用導波管アンテナ（図４の１）と、低周波用導波
管アンテナの上に搭置され、低周波用導波管アンテナお
よび高周波用導波管アンテナ（図４の２）に給電するた
めの給電用ストリップ線路（図４の１１）を内蔵した誘
電体（図４の１０）と、誘電体の上に搭置された高周波
用導波管アンテナとで構成され、低周波用導波管アンテ
ナと給電用ストリップ線路、および高周波用導波管アン
テナと給電用ストリップ線路は、それぞれ結合孔を介し
て接続され、かつ各結合孔と給電用ストリップ線路の終
端との距離は、当該電磁波の四分の一波長の奇数倍に設
定したことを特徴とする。The waveguide antenna according to the second aspect of the present invention is
The low-frequency waveguide antenna (1 in FIG. 4) and the low-frequency waveguide antenna are mounted on the low-frequency waveguide antenna and the high-frequency waveguide antenna (2 in FIG. 4). It is composed of a dielectric (10 in FIG. 4) containing a feeding strip line (11 in FIG. 4) for feeding power, and a high-frequency waveguide antenna mounted on the dielectric, for low frequencies. The waveguide antenna and the feeding strip line, and the high-frequency waveguide antenna and the feeding strip line are respectively connected through coupling holes, and the distance between each coupling hole and the end of the feeding strip line is The feature is that it is set to an odd multiple of a quarter wavelength of the electromagnetic wave.
【０００９】本発明は、このように、周波数の異なる２
つの導波管アンテナをスタックし、その間に介在させた
誘電体の中にストリップ線路を配して、各導波管アンテ
ナに給電するという構成を採用したため、小型・軽量の
導波管アンテナを実現できる。As described above, the present invention has two different frequencies.
A compact and lightweight waveguide antenna is realized by adopting a configuration in which two waveguide antennas are stacked, a strip line is placed in a dielectric material interposed between them, and power is supplied to each waveguide antenna. it can.
【００１０】[0010]
【発明の実施の形態】次に、本発明の実施例について図
面を参照して説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.
【００１１】図１は本発明の第１実施例としての導波管
アンテナの外観図であり、図１（Ａ）は正面図、図１
（Ｂ）は側面図である。図１を参照すると、この導波管
アンテナは、低周波用導波管アンテナ１の上に高周波用
導波管アンテナ２をスタックし、その間に導電板５で仕
切られ２つの誘電体３および４を挟んだ構造になってい
る。誘電体３中には低周波給電用ストリップ線路６、誘
電体４中には高周波給電用ストリップ線路７をそれぞれ
内蔵している。導電板５は低周波用導波管アンテナ１と
高周波用導波管アンテナ２を電磁波的に隔離する役割を
担う。FIG. 1 is an external view of a waveguide antenna as a first embodiment of the present invention. FIG. 1 (A) is a front view and FIG.
(B) is a side view. Referring to FIG. 1, in this waveguide antenna, a high frequency waveguide antenna 2 is stacked on a low frequency waveguide antenna 1, and a conductive plate 5 separates the two high frequency waveguide antennas 2 between the two dielectric bodies 3 and 4. It has a structure sandwiching. A low-frequency power supply strip line 6 is incorporated in the dielectric 3, and a high-frequency power supply strip line 7 is incorporated in the dielectric 4. The conductive plate 5 plays a role of isolating the low frequency waveguide antenna 1 and the high frequency waveguide antenna 2 from electromagnetic waves.
【００１２】図２は、低周波用導波管アンテナ１と低周
波給電用ストリップ線路６の接続状態を示す。この図
は、図１（Ｂ）における誘電体３を低周波給電用ストリ
ップ線路６の上面で紙面と垂直にスライスして上から下
を見たときの断面図である。図２を参照すると、低周波
給電用ストリップ線路６から低周波用導波管アンテナ１
への給電のために楕円状の結合孔８が設けられているこ
とが分かる。したがって、低周波給電用ストリップ線路
６上の低周波電磁波は、結合孔８を介して低周波用導波
管アンテナ１を励振する。FIG. 2 shows a connection state of the low frequency waveguide antenna 1 and the low frequency feeding strip line 6. This figure is a cross-sectional view of the dielectric 3 in FIG. 1B sliced vertically on the upper surface of the low-frequency power supply strip line 6 and viewed from above. Referring to FIG. 2, the low-frequency feeding strip line 6 to the low-frequency waveguide antenna 1
It can be seen that an elliptical coupling hole 8 is provided for feeding power to the. Therefore, the low-frequency electromagnetic wave on the low-frequency feeding strip line 6 excites the low-frequency waveguide antenna 1 via the coupling hole 8.
【００１３】また、図３は、高周波用導波管アンテナ２
と高周波給電用ストリップ線路７の接続状態を示す。こ
の図は、図１（Ｂ）における誘電体４を高周波給電用ス
トリップ線路７の下面で紙面と垂直にスライスして下か
ら上を見たときの断面図である。図３を参照すると、高
周波給電用ストリップ線路７から高周波用導波管アンテ
ナ２への給電のために楕円状の結合孔９が設けられてい
ることが分かる。したがって、孔周波給電用ストリップ
線路７上の高周波電磁波は、結合孔９を介して高周波用
導波管アンテナ２を励振する。Further, FIG. 3 shows a high frequency waveguide antenna 2
3 shows a connection state between the high frequency power supply strip line 7 and the high frequency power supply strip line 7. This figure is a cross-sectional view of the dielectric 4 in FIG. 1B sliced vertically on the lower surface of the high frequency power supply strip line 7 and viewed from the bottom. Referring to FIG. 3, it can be seen that an elliptical coupling hole 9 is provided for feeding power from the high frequency power feeding strip line 7 to the high frequency waveguide antenna 2. Therefore, the high frequency electromagnetic wave on the hole frequency feeding strip line 7 excites the high frequency waveguide antenna 2 through the coupling hole 9.
【００１４】次に、本実施例の動作について説明する。Next, the operation of this embodiment will be described.
【００１５】給電源（図示省略）からの電磁波は、低周
波給電用ストリップ線路６上を伝播し、結合孔８から低
周波用導波管アンテナ１内へ導かれ、低周波用導波管ア
ンテナ１から空中へ放射される。また、高周波給電用ス
トリップ線路７上を伝播する電磁波も同様に、結合孔９
から高周波用導波管アンテナ２上へ給電され、高周波用
導波管アンテナ２から空中へ放射される。An electromagnetic wave from a power supply (not shown) propagates on the low-frequency power supply strip line 6, is guided from the coupling hole 8 into the low-frequency waveguide antenna 1, and is guided to the low-frequency waveguide antenna. Radiated from 1 to the air. Similarly, electromagnetic waves propagating on the high-frequency power supply strip line 7 are also coupled to the coupling hole 9
Is fed from above to the high frequency waveguide antenna 2 and radiated from the high frequency waveguide antenna 2 into the air.
【００１６】図５は、低周波給電用ストリップ線路６の
終端から見た低周波給電用ストリップ線路６上における
低周波電磁波（実線）の定在波の分布例と、高周波給電
用ストリップ線路７の終端から見た低周波給電用ストリ
ップ線路６上における高周波電磁波（点線）の定在波の
分布例とを重畳して示す。いま、低周波電磁波の波長を
λ1、導波管内波長をλg1とし、高周波電磁波の波長を
λ2、導波管内波長をλg2とする。FIG. 5 shows an example of distribution of standing waves of low-frequency electromagnetic waves (solid line) on the low-frequency power feeding strip line 6 as seen from the end of the low-frequency power feeding strip line 6, and the high-frequency power feeding strip line 7. The distribution example of the standing wave of the high-frequency electromagnetic wave (dotted line) on the low-frequency power feeding strip line 6 viewed from the terminal end is shown in a superimposed manner. Now, the wavelength of the low frequency electromagnetic wave is λ1, the wavelength in the waveguide is λg1, the wavelength of the high frequency electromagnetic wave is λ2, and the wavelength in the waveguide is λg2.
【００１７】このとき、低周波給電用ストリップ線路３
終端と結合孔８との距離L1は、結合孔８において低周波
電磁波の定在波が最大となるように、L1=m×λ1/4 と
設定する。また、高周波給電用ストリップ線路４終端と
結合孔９との距離L2は、結合孔９において高周波電磁波
の定在波が最大となるように、L2=n×λ2/44 と設定す
る。ここで、mおよびnは奇数である。At this time, the low-frequency power supply strip line 3
The distance L1 between the terminal end and the coupling hole 8 is set to L1 = m × λ1 / 4 so that the standing wave of the low-frequency electromagnetic wave becomes maximum in the coupling hole 8. The distance L2 between the end of the high frequency power supply strip line 4 and the coupling hole 9 is set to L2 = n × λ2 / 44 so that the standing wave of the high frequency electromagnetic wave is maximized in the coupling hole 9. Here, m and n are odd numbers.
【００１８】更に、結合孔８と低周波用導波管アンテナ
１の導波管ショート面との距離Lg1は、Lg1=m×λg1/4
となるように設定する。また、結合孔９と高周波用導波
管アンテナ２の導波管ショート面との距離Lg2は、Lg2=n
×λg2/4 となるように設定する。Further, the distance Lg1 between the coupling hole 8 and the waveguide short surface of the low frequency waveguide antenna 1 is Lg1 = m × λg1 / 4
To be set. Further, the distance Lg2 between the coupling hole 9 and the waveguide short-circuit surface of the high frequency waveguide antenna 2 is Lg2 = n
Set so that × λg2 / 4.
【００１９】なお、図５の例においてはL1とλ2、L2と
λ1が等しくなっているが、必ずしも等しくなっている
必要はない。In the example of FIG. 5, L1 is equal to λ2 and L2 is equal to λ1, but they are not necessarily equal.
【００２０】次に、本発明の他の実施例について説明す
る。Next, another embodiment of the present invention will be described.
【００２１】図４は本発明の第２実施例としての導波管
アンテナの外観図であり、図４（Ａ）は正面図、図４
（Ｂ）は側面図である。図４を参照すると、この導波管
アンテナは、低周波用導波管アンテナ１の上に高周波用
導波管アンテナ２をスタックし、その間に１つの誘電体
１０を挟んだ構造になっている。FIG. 4 is an external view of a waveguide antenna as a second embodiment of the present invention. FIG. 4 (A) is a front view and FIG.
(B) is a side view. Referring to FIG. 4, this waveguide antenna has a structure in which a high frequency waveguide antenna 2 is stacked on a low frequency waveguide antenna 1 and one dielectric 10 is sandwiched therebetween. .
【００２２】誘電体１０中に給電用ストリップ線路１１
を内蔵し、低周波給電用と高周波給電用として共用す
る。この場合には、低周波用導波管アンテナ１と高周波
用導波管アンテナ２相互のアイソレーションのため、L1
=o×λ2/2、 L2=p×λ1/2 となるようにL1、L2を設定
する必要がある。従って、これらの式と前述のL1および
L2の式とから、λ1/λ2=2o/m=p/2n となる必要があ
る。なお、oおよびpは整数である。A strip line 11 for feeding is provided in the dielectric 10.
Built-in, commonly used for low-frequency power supply and high-frequency power supply. In this case, because of the mutual isolation between the low frequency waveguide antenna 1 and the high frequency waveguide antenna 2,
It is necessary to set L1 and L2 so that = o × λ2 / 2 and L2 = p × λ1 / 2. Therefore, these equations and the above L1 and
From the formula of L2, it is necessary to be λ1 / λ2 = 2o / m = p / 2n. In addition, o and p are integers.
【００２３】しかし、実際には一方の定在波が最小で、
もう一方の定在波がほぼ最大となる位置を選択すること
が多い。However, in practice, one standing wave is the minimum,
The position where the other standing wave is almost maximum is often selected.
【００２４】更に、上記２つの実施例の導波管アンテナ
において、高周波用導波管アンテナ２の遮断周波数が、
低周波電磁波の周波数f1より高くなるような内径の場合
には、L2に関してL2=p×λ1/2の条件を考慮する必要が
なくなり、導波管アンテナをより一層小型化することが
可能である。Further, in the waveguide antennas of the above two embodiments, the cutoff frequency of the high frequency waveguide antenna 2 is
When the inner diameter is higher than the frequency f1 of the low frequency electromagnetic wave, it is not necessary to consider the condition of L2 = p × λ1 / 2 for L2, and it is possible to further downsize the waveguide antenna. .
【００２５】[0025]
【発明の効果】以上に説明したように、本発明では、周
波数の異なる２つの導波管アンテナをスタックし、その
間に介在させた誘電体の中にストリップ線路を配して、
各導波管アンテナに給電するという構成を採用したた
め、小型・軽量の導波管アンテナを実現できるという効
果がある。As described above, according to the present invention, two waveguide antennas having different frequencies are stacked, and the strip line is arranged in the dielectric material interposed therebetween,
Since the configuration of supplying power to each waveguide antenna is adopted, there is an effect that a compact and lightweight waveguide antenna can be realized.
【図１】本発明の第１実施例としての導波管アンテナの
外観図FIG. 1 is an external view of a waveguide antenna as a first embodiment of the present invention.
【図２】本発明における低周波用導波管アンテナ１と低
周波給電用ストリップ線路６の接続状態を示す図FIG. 2 is a diagram showing a connection state of a low frequency waveguide antenna 1 and a low frequency feeding strip line 6 according to the present invention.
【図３】本発明における高周波用導波管アンテナ２と低
周波給電用ストリップ線路７の接続状態を示す図FIG. 3 is a diagram showing a connection state of a high frequency waveguide antenna 2 and a low frequency feeding strip line 7 according to the present invention.
【図４】本発明の第２実施例としての導波管アンテナの
外観図FIG. 4 is an external view of a waveguide antenna as a second embodiment of the present invention.
【図５】本発明の導波管アンテナの給電用ストリップ線
路上における定在波の分布例を示す図FIG. 5 is a diagram showing an example of distribution of standing waves on a feeding strip line of a waveguide antenna of the present invention.
【符号の説明】 １ 低周波用導波管アンテナ ２ 高周波用導波管アンテナ ５ 導体板 ６ 低周波給電用ストリップ線路 ７ 高周波給電用ストリップ線路 ８，９ 結合孔 ３，４，１０ 誘電体 １１ 給電用ストリップ線路[Explanation of symbols] 1 Low frequency waveguide antenna 2 High frequency waveguide antenna 5 conductor plate 6 Low frequency power strip line 7 High frequency power strip line 8,9 coupling holes 3,4,10 Dielectric 11 Power supply strip line
Claims (3)
と、該各導波管アンテナに給電するためのストリップ線
路を内蔵した誘電体とを、該誘電体が前記２つの導波管
アンテナの間に位置するようにスタックし、前記各導波
管アンテナと前記ストリップ線路は結合孔で接続された
ことを特徴とする導波管アンテナ。1. A two-waveguide antenna having different frequencies, and a dielectric containing a strip line for feeding each of the two waveguide antennas, the dielectric being between the two waveguide antennas. A waveguide antenna, wherein each waveguide antenna and the strip line are connected to each other by a coupling hole.
波管アンテナに給電するための低周波給電用ストリップ
線路を内蔵した誘電体と、 該誘電体の上に搭置された電磁波隔離用の導電板と、 該導電板の上に搭置され、高周波用導波管アンテナに給
電するための高周波給電用ストリップ線路を内蔵した誘
電体と、 該誘電体の上に搭置された高周波用導波管アンテナとで
構成され、 前記低周波用導波管アンテナと前記低周波給電用ストリ
ップ線路、および前記高周波用導波管アンテナと前記高
周波給電用ストリップ線路は、それぞれ結合孔を介して
接続されることを特徴とする導波管アンテナ。2. A low-frequency waveguide antenna, and a low-frequency power supply strip line for feeding power to the low-frequency waveguide antenna, which is mounted on the low-frequency waveguide antenna. Built-in a dielectric, a conductive plate for electromagnetic wave isolation mounted on the dielectric, and a high-frequency power supply strip line for powering a high-frequency waveguide antenna mounted on the conductive plate And a high-frequency waveguide antenna mounted on the dielectric, the low-frequency waveguide antenna, the low-frequency power supply strip line, and the high-frequency waveguide. The waveguide antenna, wherein the antenna and the high-frequency power supply strip line are connected to each other through coupling holes.
波管アンテナおよび高周波用導波管アンテナに給電する
ための給電用ストリップ線路を内蔵した誘電体と、 該誘電体の上に搭置された前記高周波用導波管アンテナ
とで構成され、 前記低周波用導波管アンテナと前記給電用ストリップ線
路、および前記高周波用導波管アンテナと前記給電用ス
トリップ線路は、それぞれ結合孔を介して接続され、 かつ前記各結合孔と前記給電用ストリップ線路の終端と
の距離は、当該電磁波の四分の一波長の奇数倍に設定し
たことを特徴とする導波管アンテナ。3. A low frequency waveguide antenna, and a power supply for feeding the low frequency waveguide antenna and the high frequency waveguide antenna mounted on the low frequency waveguide antenna. It is composed of a dielectric having a strip line built-in and the high-frequency waveguide antenna mounted on the dielectric, the low-frequency waveguide antenna, the feeding strip line, and the high-frequency waveguide. The waveguide antenna and the feeding strip line are respectively connected through coupling holes, and the distance between each coupling hole and the end of the feeding strip line is an odd multiple of a quarter wavelength of the electromagnetic wave. A waveguide antenna characterized by being set to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002018281A JP3859520B2 (en) | 2002-01-28 | 2002-01-28 | Waveguide antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002018281A JP3859520B2 (en) | 2002-01-28 | 2002-01-28 | Waveguide antenna |
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| Publication Number | Publication Date |
|---|---|
| JP2003218627A true JP2003218627A (en) | 2003-07-31 |
| JP3859520B2 JP3859520B2 (en) | 2006-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8903021B2 (en) | 2003-12-19 | 2014-12-02 | Qualcomm Incorporated | Channel estimation for an OFDM communicaiton system with inactive subbands |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP3859520B2 (en) | 2006-12-20 |
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