JPH04120804A - Plane antenna - Google Patents
Plane antennaInfo
- Publication number
- JPH04120804A JPH04120804A JP24152690A JP24152690A JPH04120804A JP H04120804 A JPH04120804 A JP H04120804A JP 24152690 A JP24152690 A JP 24152690A JP 24152690 A JP24152690 A JP 24152690A JP H04120804 A JPH04120804 A JP H04120804A
- Authority
- JP
- Japan
- Prior art keywords
- series
- feed line
- antenna
- radiating elements
- planar 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.)
- Pending
Links
- 238000005452 bending Methods 0.000 claims abstract description 10
- 239000004020 conductor Substances 0.000 claims description 20
- 230000005855 radiation Effects 0.000 abstract description 17
- 230000002542 deteriorative effect Effects 0.000 abstract description 3
- 230000002411 adverse Effects 0.000 abstract 2
- 230000006866 deterioration Effects 0.000 abstract 1
- 239000003989 dielectric material Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- -1 polyethylene Polymers 0.000 description 5
- 229910001369 Brass Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000010951 brass Substances 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004697 Polyetherimide Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000005388 cross polarization Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、マイクロ波帯に使用する平面アンテナに関す
る。DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a planar antenna used in the microwave band.
（ロ）従来の技術
マイクロ波帯に使用するアンテナとして、地導体と、こ
の地導体の表面に形成した誘電体と、この誘電体表面に
形成した複数のパッチ状放射素子と、給電線路とを備え
た平面アンテナが開発され、利用し始められている。(b) Conventional technology An antenna used in the microwave band consists of a ground conductor, a dielectric formed on the surface of this ground conductor, a plurality of patch-like radiating elements formed on the surface of this dielectric, and a feed line. Planar antennas equipped with this technology have been developed and are beginning to be used.
この平面アンテナの放射特性は、１つのパッチ状放射素
了の放射特性と、複数の放射素子の配列、給電方法によ
って決定され、さまざまな特性を有するものが提案され
ている。特に指向性は、それぞれの放射素子に給電する
位相と、放射素子間の間隔に左右され、指向性を示す代
表的なものとして、ビームの鋭さを表す半値角（ビーム
の中心で最大の利得から１．／２になる角度であり、狭
い方が指向性が高い。）が使用される。この半値角は、
それぞれ放射素子に給電される信Σが同じ位相である場
合にεＪ、１つの放射素子の半値角と、放射素子の間隔
によって決定されるものである。The radiation characteristics of this planar antenna are determined by the radiation characteristics of one patch-like radiation element, the arrangement of a plurality of radiating elements, and the feeding method, and antennas having various characteristics have been proposed. In particular, directivity depends on the phase of power feeding to each radiating element and the spacing between the radiating elements.A typical indicator of directivity is the half-power angle (from the maximum gain at the center of the beam), which indicates the sharpness of the beam. The angle is 1./2, and the narrower the angle, the higher the directivity.) is used. This half angle is
When the signals Σ fed to each radiating element have the same phase, εJ is determined by the half-power angle of one radiating element and the spacing between the radiating elements.
このような平面アンテナのうら、その複数のバッチ状放
射素子のうぢ２つ以りを直列に接続した平面アンテナが
、文献アイ イー・イー・イーミーランザクジョン（Ｉ
ＥＥＥ Ｔｒａｎｓ、Ａ−Ｐ、 Ａｎｔｅｎｎａｓ
Ｐｒｏｐａｇａｔ、、ｖｏｌ、ＡＰ−２４，ｐｐ、８４
６−８５１Ｎｏｖ、 １９７６、）によって知られてい
る。このアンテナは、第４図（ａ）および第４１Ｆ（ｂ
）にその上面Ｖを示す形状であり、アンテナ効率が高い
ものである。Behind such a planar antenna, a planar antenna in which two or more of the plurality of batch-like radiating elements are connected in series is described in the literature I.E.I.
EEE Trans, A-P, Antennas
Propagat,, vol, AP-24, pp, 84
6-851 Nov, 1976). This antenna is shown in FIGS. 4(a) and 41F(b).
), and has a high antenna efficiency.
（ハ）発明が解決しようとする課題
このような従来のアンテナをマイクロ波センザとして用
いる場合に、センシングエリアは、アンテナの放射指向
性、特に主ビームの幅を示す半値角に依存しており、感
度を設定するためには、この半値角を自由に選択できる
ような構造にする必要がある。(c) Problems to be solved by the invention When using such a conventional antenna as a microwave sensor, the sensing area depends on the radiation directivity of the antenna, especially the half-power angle indicating the width of the main beam. In order to set the sensitivity, it is necessary to create a structure that allows this half-value angle to be freely selected.
とごろで、前述の地導体と、この地導体の表面に形成さ
れた誘電体と、この誘電体表面に形成された複数のパッ
チ状放射素子と、給電線路とを備え、前記複数のバッチ
状放射素子のうち２つ以上を直列に接続した平面アンテ
ナにおいては、その接続のための給電線路の長さか使用
周波数と給電線路の材質および線路幅によって決定され
る波長（以下、線路波長という。）の約１／２程度が伝
送損失を小さくできるものとして知られ、しかも、半値
角は直列に接続されるパッチ状放射素子数が多い程狭く
なることが知られている。このことから、前述の直列に
放射素子を接続したアンテナは、放射素子の間隔が変え
られず、放射素子の数によって半値角が離散的に決まる
ことをも示していしたがって、このような平面アンテナ
を用いた場合乙こは、例えは放射素子３個分の半値角と
放射素子４個分の半値角の中間のものを得ることがてき
ないという問題かあり、センソ′−として設計の自由度
が小さく、また、平面アンテナの大きさは、必要とされ
る感度Ｑこよって直列に接続される放射素子の数６．二
よって決定されるので、その間の接続の給電線路の長さ
が決められ、アンテナを小型化することもできなかった
。The ground conductor includes the ground conductor, a dielectric formed on the surface of the ground conductor, a plurality of patch-shaped radiating elements formed on the surface of the dielectric, and a feed line. In a planar antenna in which two or more of the radiating elements are connected in series, the wavelength is determined by the length or frequency of the feed line for the connection, the material of the feed line, and the line width (hereinafter referred to as line wavelength). It is known that the transmission loss can be reduced by about 1/2 of the above, and it is also known that the half-power angle becomes narrower as the number of patch-like radiating elements connected in series increases. This also shows that in the aforementioned antenna with radiating elements connected in series, the spacing between the radiating elements cannot be changed, and the half-power angle is discretely determined by the number of radiating elements. When used, there is a problem that it is not possible to obtain a half-value angle between the half-value angle of three radiating elements and the half-value angle of four radiating elements, which reduces the degree of freedom in design as a sensor. The size of the planar antenna is small and the number of radiating elements connected in series depends on the required sensitivity Q. Therefore, the length of the feed line for connection between them is determined, and it is not possible to downsize the antenna.
本発明は、このような平面アンテナζにおいてもｔｊ女
ｉｔ特性を低下させることなく、半値角を自由に設：＋
ｊｌでき、また小型化も可能な１′面アンテナを提供す
ることを目的とする。The present invention allows the half-power angle to be set freely even in such a planar antenna ζ without deteriorating the tj-it characteristics.
It is an object of the present invention to provide a 1'-plane antenna that can be used as a 1' plane antenna.
（ニ）課題を解決するだめの手段
本発明者らは、マイクロ波信号を伝送するマイクロスト
リンプて接続する点間の距離を縮めるために屈曲ごきる
ことは知っていたので、第２図（ａ）ζ、１示ずよう（
７こ、単ζ睨マツチ杖放射素−ｒのうち２つ以−Ｌを直
列に接続した平面アンテナの接続する給電線路を屈曲し
て作成したが、その屈曲した線路部分から不要放射が起
こり、アンテナとして使用できなかった。(d) Means for solving the problem The inventors of the present invention knew that microstripes that transmit microwave signals can be bent in order to shorten the distance between connecting points. a) ζ, 1 (
7. The feeding line connected to the planar antenna in which two or more L of the single ζ-ray radiators R were connected in series was created by bending the feed line, but unnecessary radiation occurred from the bent line part. It could not be used as an antenna.
そして、その不要放射が起こる理由が、第２図０））に
示すように、屈曲した給電線路から、その屈曲した形状
に応して放射が起こっており、−見その放射成分２３．
２４は互いに逆向きであるため打ち消し合うように見え
るが、伝送される信号の位相が異なっているため、合成
されると不要放射を形成していると推測し、これを抑制
するためには、同し位相で逆向きの信号を近くに発生さ
せることに効果があることをつきとめた。The reason why this unnecessary radiation occurs is that, as shown in Fig. 2 (0)), radiation occurs from a bent power supply line in accordance with its bent shape.
24 appear to cancel each other because they are in opposite directions, but since the phases of the transmitted signals are different, it is assumed that when combined, they form unnecessary radiation.In order to suppress this, We found that it is effective to generate signals of the same phase but in opposite directions nearby.
本発明者らは、以」−の知見に基づいて、鋭意研究工夫
し、直列に接続されるバッチ状放射素子の接続に用いる
給電線路を屈曲させ、しかも屈曲によって発生ずる不要
放射を抑制できる構造を見出すことに成功した。Based on the following knowledge, the present inventors have conducted extensive research and devised a structure in which the feed line used for connecting batch-shaped radiating elements connected in series can be bent, and unnecessary radiation generated by the bending can be suppressed. succeeded in finding out.
すなわち、本発明の平面アンテナは、第１図（ａ）およ
び第１図（ｂ）ｌこ示ずように、地導体８と、この地導
体８の表面に形成された誘電体７と１、この誘電体７の
表面に形成された複数のパッチ状放射素子１と、給電線
路２とを備え、前記複数のパッチ状放射素子１のうち２
つ以上を直列に接続した平面アンテナにおいて、直列に
接続したアンテナ列を２以上有すると共に、直列に接続
した給電線路２を、その電気長さを変えずに屈曲した形
状とし、かつ、隣接するその屈曲部の屈曲方向が互いに
逆向きであるように配置したことを特徴とする。That is, as shown in FIGS. 1(a) and 1(b), the planar antenna of the present invention includes a ground conductor 8, dielectrics 7 and 1 formed on the surface of this ground conductor 8, It comprises a plurality of patch-like radiating elements 1 formed on the surface of the dielectric 7 and a feed line 2, and two of the plurality of patch-like radiating elements 1
A planar antenna in which two or more antenna rows are connected in series has two or more antenna rows connected in series, and the feed line 2 connected in series has a bent shape without changing its electrical length, and the adjacent It is characterized in that the bending parts are arranged so that the bending directions are opposite to each other.
また、本発明の平面アンテナは、第１図（Ｃ）に示すよ
うに、地導体８と、この地導体の表面に形成された誘電
体７と、この誘電体７の表面に形成された複数のパッチ
状放射素子１と、給電線路２とを備え、前記複数のパッ
チ状放射素子１のうち２つ以上を直列に接続した平面ア
ンテナにおいて、直列に接続した給電線路２を、その電
気長を変えずに２本の給電線路２ａ、２ｂに分岐し、そ
れぞれの分岐した給電線路２ａ、２ｂに屈曲部を設け、
かつ、その２つの屈曲部が互いに対向するように配置し
たことを特徴とする。Further, as shown in FIG. 1(C), the planar antenna of the present invention includes a ground conductor 8, a dielectric material 7 formed on the surface of the ground conductor, and a plurality of dielectric materials formed on the surface of the dielectric material 7. In a planar antenna comprising a patch-like radiating element 1 and a feed line 2, in which two or more of the patch-like radiating elements 1 are connected in series, the feed line 2 connected in series is Branching into two feeder lines 2a, 2b without changing, providing a bent portion on each branched feeder line 2a, 2b,
Further, it is characterized in that the two bent portions are arranged so as to face each other.
前記給電線路２の屈曲部は、第３図（ａ）に示すように
、円弧状であってもよく、また前記直列に接続した給電
線路２は、第３図（ｂ）に示すように、連続して２以上
の繰り返し屈曲部を有するものでもよい。The bent portion of the feed line 2 may be arcuate as shown in FIG. 3(a), and the feed line 2 connected in series may have a shape as shown in FIG. 3(b). It may also have two or more consecutively repeated bent portions.
本発明の平面アンテナに使用する地導体８の材質は、導
体であればどのようなものでも使用でき、銅、アルミニ
ウム、鉄、青銅、真鍮、等必要とされる導電率、機械強
度に応じて選択し、その厚さも材質と必要とされる特性
に応じて選択することができる。誘電体７としては、ポ
リエチレン、ポリイミド、ポリエステル、ポリフルオロ
エチレン、ポリプロピレン、ポリエーテルイミド、ポリ
エーテルエーテルケトン等、比誘電率、誘電正接の低い
ものを使用することができ、また、通常のエポキシ系、
アクリル系の樹脂であっても、気泡を多く含むように構
成されたもの、あるいは無機質の絶縁材料であって多孔
質のものも使用できる。さらには、前記の有機絶縁材料
をフィルムにしたものをアンテナ回路を支持するものと
して使用し、これらの絶縁材料をスペーサとして、空気
層を誘電体に代えて使用できる。The material of the ground conductor 8 used in the planar antenna of the present invention may be any conductor, such as copper, aluminum, iron, bronze, brass, etc., depending on the required electrical conductivity and mechanical strength. The thickness can also be selected depending on the material and required properties. As the dielectric material 7, materials with low dielectric constant and dielectric loss tangent can be used, such as polyethylene, polyimide, polyester, polyfluoroethylene, polypropylene, polyetherimide, polyetheretherketone, etc., and ordinary epoxy materials can be used. ,
Even if it is an acrylic resin, one configured to contain many bubbles, or an inorganic insulating material that is porous can also be used. Furthermore, films made of the above-mentioned organic insulating materials can be used to support the antenna circuit, these insulating materials can be used as spacers, and the air layer can be used in place of the dielectric.
（ホ）作用
本発明の構造により、直列に接続されるパッチ状放射素
子の接続に用いる給電線路を屈曲させ、しかも屈曲によ
って発生する不要放射を抑制できる。(e) Effect: The structure of the present invention allows the feed line used to connect the patch-like radiating elements connected in series to be bent, and to suppress unnecessary radiation generated by the bending.
（へ）実施例
〈実施例１〉
第１図（ａ）及び第１図（ｂ）に示す構造とし、地導体
８として、アルミニウムを用い、この地導体８の表面に
形成する誘電体７として、発泡ポリエチレンを用い、こ
の誘電体７の表面に、複数の方形バッチ状放射素子１と
、給電線路２とを前記誘電体７の表面に貼り合わせた銅
箔の不要な部分をエツチング除去することによって形成
し、その複数のパッチ状放射素子１をそれぞれ給電線路
２を介して４つ直列に接続し、さらに直列に接続したア
ンテナ列を４列とすると共に、直列に接続した給電線路
２を、その電気長さを変えずに屈曲した形状とし、かつ
隣接するその屈曲部の屈曲方向が互いに逆向きであるよ
うに配置した平面アンテナを作成した。(F) Example <Example 1> The structure shown in FIGS. 1(a) and 1(b) is used, aluminum is used as the ground conductor 8, and the dielectric material 7 formed on the surface of this ground conductor 8 is , using foamed polyethylene, on the surface of this dielectric 7, a plurality of rectangular batch-shaped radiating elements 1 and a feed line 2 are bonded to the surface of the dielectric 7, and unnecessary parts of the copper foil are removed by etching. The plurality of patch-shaped radiating elements 1 are connected in series through four feed lines 2, and the number of series-connected antenna rows is four, and the series-connected feed lines 2 are connected in series. A planar antenna was created that had a bent shape without changing its electrical length and was arranged so that the bending directions of adjacent bent portions were opposite to each other.
このときに、第１図（ａ）に示す直列に接続された放射
素子の間隔ｌを変えたものを作成したところ、給電線路
２を直線状にしたものの放射素子を３個接続したものと
４個接続したものの中間の半値角を有するアンテナとす
ることができた。At this time, we created the series-connected radiating elements shown in FIG. It was possible to create an antenna with a half-value angle between the two connected antennas.
また、面積も前記直線状の給電線路を用いて放射素子を
４個使用したものに比べ小さくすることができた。In addition, the area can be made smaller compared to the case where the linear feed line is used and four radiating elements are used.
さらにまた、交差偏波特性が優れていることが分かった
。この理由は、２つの隣接する給電線路が、同じ位相の
箇所において互いに逆向きの２方向に配置されているこ
とによって、必要とする方向における偏波と９０度異な
る偏波成分が打ち消し合うように作用しているものと考
えられる。Furthermore, it was found that cross-polarization characteristics were excellent. The reason for this is that two adjacent feed lines are arranged in two opposite directions at the same phase point, so that the polarization components that are 90 degrees different from the polarization in the desired direction cancel each other out. It is thought that it is working.
〈実施例２〉
第１図（Ｃ）に示す構造とし、地導体８として、真鍮を
用いた、この地導体８の表面に形成する誘電体７として
、発泡ポリエチレンを用い、この誘電体７の表面に複数
の方形パッチ状放射素子１と、給電線路２とを前記誘電
体７の表面乙こ貼り合わせた銅箔の不要な部分をエンチ
ング除去することによって形成し、その複数のパッチ状
放射素子］をそれぞれ給電線路２を介して４つ直列に接
続し、さらに直列に接続し７たアンテナ列を４列とする
と共に、直列に接続した給電線路２を、その電気長を変
えず乙こ２木の給電線路に分岐し、それぞれの分岐した
給電線路Ｑこ屈曲部を設け、かつその２つの屈曲部が互
いに対向するように配置した平面アンテナを作成した。<Example 2> The structure shown in FIG. 1(C) is used, the ground conductor 8 is made of brass, the dielectric material 7 formed on the surface of this ground conductor 8 is made of foamed polyethylene, and the dielectric material 7 is made of brass. A plurality of rectangular patch-shaped radiating elements 1 and a feed line 2 are formed on the surface by etching and removing unnecessary parts of the copper foil bonded to the surface of the dielectric 7, and the plurality of patch-shaped radiating elements ] are connected in series via the feed line 2, and further connected in series to form four antenna rows, and the feed lines 2 connected in series are connected in series without changing their electrical length. A planar antenna was created in which a wooden feed line was branched, each branched feed line Q was provided with a bent part, and the two bent parts were arranged to face each other.
このときに、第１図（Ｃ）に示す直列に接続された放射
素子の間隔Ｐを変えたものを作成したところ、給電線路
２を直線状にしたものの放射素子を３個接続したものと
４個接続したものの中間の半値角を有するアンテナとす
ることができた。At this time, we created the series-connected radiating elements shown in FIG. It was possible to create an antenna with a half-value angle between the two connected antennas.
また、面積も前記直線状の給電線路を用いて放射素子を
４個使用したものに比べ小さくすることかできた。Furthermore, the area can be made smaller compared to the case where the linear feed line is used and four radiating elements are used.
さらにまた、交差偏波特性が借れていることが分かった
。この理由は、１つの給電線路か互いに逆向きの２方向
に分岐されていることによって、必要とする方向におけ
る偏波と９０度異なる偏波成分が、同じ位相の箇所にお
いて打ら消し合うように作用しているものと考えられる
。Furthermore, it was found that cross-polarized wave characteristics were obtained. The reason for this is that a single feed line is branched into two opposite directions, so that polarized components that are 90 degrees different from the polarized waves in the required direction cancel each other out at locations with the same phase. It is thought that it is working.
〈実施例３〉
第３図（ａ）に示すよ・うに、給電線路２の屈曲部が、
円弧状となるように形成した以外は、実施例１と同様の
平面アンテナを作成した。<Example 3> As shown in FIG. 3(a), the bent part of the feed line 2 is
A planar antenna similar to that in Example 1 was created except that it was formed in an arc shape.
この結果、実施例１とほぼ同様の結果が得られ、実施例
１に比べると、不要放射に多少の改良が見られた。この
理由としては、実施例１では、給電線路２の屈曲部があ
る角度を持ったパターンであるので、その部分からの不
要放射があったのを、滑らかな曲線に変えたため少なく
なったと考えられる。As a result, almost the same results as in Example 1 were obtained, and compared to Example 1, some improvement was seen in unnecessary radiation. The reason for this is thought to be that in Example 1, the curved part of the feed line 2 had a pattern with a certain angle, so there was unnecessary radiation from that part, but it was reduced by changing it to a smooth curve. .
〈実施例４〉
第３Ｍ（ｂ）に示すように、直列に接続した給電線路２
に、連続して２つのなめらかな繰り返し屈曲部を設けた
以外は、実施例１と同様に作成した。<Example 4> As shown in 3rd M(b), the feed lines 2 connected in series
It was made in the same manner as in Example 1, except that two continuous smooth repeated bends were provided.
この結果、実施例１とほぼ同様の結果が得られ、実施例
１に比べると、不要放射に多少の改良が見られた。As a result, almost the same results as in Example 1 were obtained, and compared to Example 1, some improvement was seen in unnecessary radiation.
この理由は、実施例３と同様にパターンの形状が滑らか
になったことと考えられる。The reason for this is thought to be that the shape of the pattern became smooth as in Example 3.
（Ｉ・）発明の効果
以−Ｉ乙こ説明したように、本発明によって、平面アン
テナの放射特性を低下さ−ぜることなく半値角を自由に
設定でき、また小型化も可能な平面アンテーノ゛を提供
することができた。(I.) Effects of the Invention As explained above, the present invention makes it possible to freely set the half-value angle without deteriorating the radiation characteristics of the planar antenna, and also allows for miniaturization of the planar antenna. We were able to provide ``.
第１図（ａ、）は本発明の一実施例平面アンテナの要部
を示す十面図、第１［Ｄ（ｂ）は第１図（ａ）の側面図
、第１図（Ｃ）は本発明の他の実施例平面アンテナの要
部を示す上面図、第２図（ａ）は本発明の詳細な説明す
るための上面図、第２図（Ｆ））は本発明の詳細な説明
するだめの斜視図、第３図（ａ）および第３１ｍ（ｂ）
はそれぞれ本発明の他の実施例平面アンテナの要部を示
すト面図、第［（＝１）及び第４図（Ｆ〕）は従来例の
一部を示す上面図である。
符号の説明
１：放射素子、
７：誘電体、
２：給電線路、
８：地導体、FIG. 1(a) is a tenth view showing the main parts of a planar antenna according to an embodiment of the present invention, FIG. 1(b) is a side view of FIG. 1(a), and FIG. A top view showing the main parts of a planar antenna according to another embodiment of the invention, FIG. 2(a) is a top view for explaining the invention in detail, and FIG. Perspective views of Sudame, Figures 3(a) and 31m(b)
are top views showing the main parts of planar antennas according to other embodiments of the present invention, and Figures [(=1) and FIG. 4(F]) are top views showing a part of the conventional example. Explanation of symbols 1: Radiating element, 7: Dielectric, 2: Feeding line, 8: Ground conductor,
Claims (4)
と、この誘電体表面に形成された複数のパッチ状放射素
子と、給電線路とを備え、前記複数のパッチ状放射素子
のうち２つ以上を直列に接続した平面アンテナにおいて
、直列に接続したアンテナ列を２以上有すると共に、直
列に接続した給電線路をその電気長を変えずに屈曲した
形状とし、かつ隣接するその屈曲部の屈曲方向が互いに
逆向きであるように配置したことを特徴とする平面アン
テナ。(1) A grounding conductor, a dielectric formed on the surface of the grounding conductor, a plurality of patch-shaped radiating elements formed on the surface of the dielectric, and a feed line, the plurality of patch-shaped radiating elements A planar antenna in which two or more of them are connected in series has two or more antenna rows connected in series, and the feed line connected in series has a bent shape without changing its electrical length, and the bent portions thereof are adjacent to each other. A planar antenna characterized in that the antennas are arranged such that their bending directions are opposite to each other.
と、この誘電体表面に形成された複数のパッチ状放射素
子と、給電線路とを備え、前記複数のパッチ状放射素子
のうち２つ以上を直列に接続した平面アンテナにおいて
、直列に接続した給電線路を、その電気長を変えずに２
本の給電線路に分岐し、それぞれの分岐した給電線路に
屈曲部を設け、かつ、その２つの屈曲部が互いに対向す
るように配置したことを特徴とする平面アンテナ。(2) A grounding conductor, a dielectric formed on the surface of the grounding conductor, a plurality of patch-like radiating elements formed on the surface of the dielectric, and a feed line, wherein the plurality of patch-like radiating elements In a planar antenna in which two or more of them are connected in series, the feed line connected in series can be connected to two wires without changing the electrical length.
What is claimed is: 1. A planar antenna characterized in that the feed line is branched into a main feed line, each branched feed line is provided with a bent part, and the two bent parts are arranged so as to face each other.
する請求項１または２に記載の平面アンテナ。(3) The planar antenna according to claim 1 or 2, wherein the bent portion has a smooth curve.
の繰り返し屈曲部を有することを特徴とする請求項１、
２または３に記載の平面アンテナ。(4) Claim 1, wherein the series-connected power supply line has two or more consecutively repeated bending parts.
3. The planar antenna according to 2 or 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24152690A JPH04120804A (en) | 1990-09-11 | 1990-09-11 | Plane antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24152690A JPH04120804A (en) | 1990-09-11 | 1990-09-11 | Plane antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04120804A true JPH04120804A (en) | 1992-04-21 |
Family
ID=17075661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24152690A Pending JPH04120804A (en) | 1990-09-11 | 1990-09-11 | Plane antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04120804A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5923290A (en) * | 1995-03-31 | 1999-07-13 | Kabushiki Kasiha Toshiba | Array antenna apparatus |
| CN109193146A (en) * | 2018-09-12 | 2019-01-11 | 北京工业大学 | A kind of micro-strip millimeter wave antenna |
| CN110311231A (en) * | 2018-03-27 | 2019-10-08 | 华为技术有限公司 | A kind of aerial array, the connection method of aerial array and radar module |
| WO2022172872A1 (en) * | 2021-02-10 | 2022-08-18 | 株式会社カネカ | Microstrip antenna and method for producing same |
| KR20220124879A (en) * | 2021-03-04 | 2022-09-14 | (주)스마트레이더시스템 | Radar apparatus for detecting target object |
-
1990
- 1990-09-11 JP JP24152690A patent/JPH04120804A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5923290A (en) * | 1995-03-31 | 1999-07-13 | Kabushiki Kasiha Toshiba | Array antenna apparatus |
| CN110311231A (en) * | 2018-03-27 | 2019-10-08 | 华为技术有限公司 | A kind of aerial array, the connection method of aerial array and radar module |
| CN110311231B (en) * | 2018-03-27 | 2021-10-15 | 华为技术有限公司 | Antenna array, antenna array connection method and radar module |
| CN109193146A (en) * | 2018-09-12 | 2019-01-11 | 北京工业大学 | A kind of micro-strip millimeter wave antenna |
| WO2022172872A1 (en) * | 2021-02-10 | 2022-08-18 | 株式会社カネカ | Microstrip antenna and method for producing same |
| KR20220124879A (en) * | 2021-03-04 | 2022-09-14 | (주)스마트레이더시스템 | Radar apparatus for detecting target object |
| JP2022135865A (en) * | 2021-03-04 | 2022-09-15 | スマート レーダー システム，インコーポレイテッド | Radar apparatus for detecting target |
| US11914071B2 (en) | 2021-03-04 | 2024-02-27 | Smart Radar System, Inc. | Radar apparatus for detecting target object |
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