JPH1051227A - Planar antenna - Google Patents
Planar antennaInfo
- Publication number
- JPH1051227A JPH1051227A JP8202333A JP20233396A JPH1051227A JP H1051227 A JPH1051227 A JP H1051227A JP 8202333 A JP8202333 A JP 8202333A JP 20233396 A JP20233396 A JP 20233396A JP H1051227 A JPH1051227 A JP H1051227A
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- patch antenna
- radome
- parasitic element
- housing
- 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、衛星通信用のアン
テナに関し、特に平面状のアンテナに属する。The present invention relates to an antenna for satellite communication, and more particularly to a planar antenna.
【０００２】[0002]
【従来の技術】従来の技術の平面アンテナについて図面
を用いて説明する。図４は、従来の平面アンテナの断面
図を示している。従来の平面アンテナは、誘電体で構成
される略深皿状のレドーム４１の内側の天井面に無給電
素子４２が配置され、さらにその下方に空間を介在させ
てパッチアンテナ４３が配置されている。パッチアンテ
ナ４３は、誘電体基板４４上に形成され、同軸ケーブル
４５により給電される（例えば、特開平３−７４９０８
号公報参照）。2. Description of the Related Art A conventional planar antenna will be described with reference to the drawings. FIG. 4 shows a cross-sectional view of a conventional planar antenna. In the conventional planar antenna, a parasitic element 42 is arranged on a ceiling surface inside a substantially deep dish-shaped radome 41 made of a dielectric material, and further, a patch antenna 43 is arranged thereunder with a space interposed therebetween. . The patch antenna 43 is formed on a dielectric substrate 44, and is fed by a coaxial cable 45 (for example, see Japanese Patent Application Laid-Open No. 3-74908).
Reference).
【０００３】[0003]
【発明が解決しようとする課題】従来の平面アンテナの
第１の問題点は、アンテナ全体の強度が弱いということ
である。一般にアンテナを保護するレドーム４１は、ア
ンテナから放射される電波の損失をなるべく小さくする
ために、薄く、且つ誘電正接の小さな材料を使用する。
誘電正接の小さな材料は、一般に比誘電率が小さく柔ら
かい材料となる。このことは、誘電体基板４４にも同様
にあてはまり、従来のアンテナの構造では特に、上下方
向の力に対して非常に弱く、無給電素子４２とパッチア
ンテナ４３の距離が容易に変わってしまい、アンテナの
利得や放射パターン等の特性が変化してしまう。また、
このことは、上下方向の力に限らず、ねじれ、折り曲げ
に対しても弱く、且つ温度変化による材料の変形時にも
顕著にあらわれ、耐環境性についても弱いということが
いえる。A first problem with the conventional planar antenna is that the overall strength of the antenna is weak. In general, the radome 41 that protects the antenna uses a thin material having a small dielectric loss tangent in order to minimize the loss of radio waves radiated from the antenna.
Generally, a material having a small dielectric loss tangent is a soft material having a small relative dielectric constant. This is similarly applied to the dielectric substrate 44. In the structure of the conventional antenna, the distance between the parasitic element 42 and the patch antenna 43 is easily changed, in particular, because the antenna is very weak against a vertical force. Characteristics such as the gain and the radiation pattern of the antenna change. Also,
This is not limited to the vertical force, but is also weak against torsion and bending, is remarkable when the material is deformed due to temperature change, and is weak in environmental resistance.
【０００４】それ故に、本発明の課題は、特性・性能向
上、信頼性の向上、及び生産性向上にある。[0004] Therefore, an object of the present invention is to improve characteristics / performance, reliability, and productivity.
【０００５】より具体的には、平面アンテナの折り曲げ
強度、圧縮強度等の機械的強度を改善すると共に、耐環
境性の改善をし、また、組立に際して、接着剤やビスを
極力使わず、簡単な組立にし、安価な平面アンテナを提
供することにある。More specifically, the mechanical strength, such as the bending strength and the compressive strength, of the planar antenna is improved, and the environmental resistance is improved. An object of the present invention is to provide an inexpensive planar antenna with a simple assembly.
【０００６】[0006]
【課題を解決するための手段】請求項１記載の発明によ
れば、筐体と、該筐体の内側底面上に配置されたパッチ
アンテナと、前記筐体上に配置され、前記パッチアンテ
ナとの間に間隙が生じるように該パッチアンテナを覆う
レドームと、該レドームの内側天井面に配置され、前記
パッチアンテナとの間に空間を介在させて対向する無給
電素子とを含む平面アンテナにおいて、前記筐体と前記
レドームとで構成される空間内に、前記パッチアンテナ
と前記無給電素子との間の間隔を保つための支えが設け
られていることを特徴とする平面アンテナが得られる。According to the first aspect of the present invention, a housing, a patch antenna disposed on an inner bottom surface of the housing, and the patch antenna disposed on the housing, A radome that covers the patch antenna so that a gap is generated therebetween, and a planar antenna that is disposed on the inner ceiling surface of the radome and includes a parasitic element that faces the patch antenna with a space interposed therebetween. A planar antenna is provided in which a support for maintaining an interval between the patch antenna and the parasitic element is provided in a space formed by the housing and the radome.
【０００７】請求項２記載の発明によれば、前記支えが
略棒状であることを特徴とする請求項１記載の平面アン
テナが得られる。According to a second aspect of the present invention, there is provided the planar antenna according to the first aspect, wherein the support has a substantially rod shape.
【０００８】請求項３記載の発明によれば、前記支え
が、前記筐体の内側底面に形成され前記無給電素子の方
へ突出する第１の突起部と、前記レドームの内側天井面
に形成され前記パッチアンテナの方へ突出し前記第１の
突起部と組み合わされる第２の突起部とで構成され、前
記パッチアンテナに前記第１の突起部を挿通するための
穴が形成され、前記無給電素子に前記第２の突起部を挿
通するための穴が形成されていることを特徴とする請求
項２記載の平面アンテナが得られる。According to the third aspect of the present invention, the support is formed on the inner bottom surface of the housing and protrudes toward the parasitic element, and is formed on the inner ceiling surface of the radome. A second projecting portion projecting toward the patch antenna and being combined with the first projecting portion, a hole is formed in the patch antenna for inserting the first projecting portion, 3. The planar antenna according to claim 2, wherein a hole for inserting the second protrusion is formed in the element.
【０００９】請求項４記載の発明によれば、前記パッチ
アンテナが、前記第１の突起部に装着され且つ係止され
る第１の誘電体により前記筐体の内側底面上に固定さ
れ、前記無給電素子が、前記第２の突起部に装着され且
つ係止される第２の誘電体により前記レドームの内側天
井面上に固定されていることを特徴とする請求項３記載
の平面アンテナが得られる。According to the fourth aspect of the present invention, the patch antenna is fixed on the inner bottom surface of the housing by the first dielectric attached to and locked to the first projection. 4. The planar antenna according to claim 3, wherein the parasitic element is fixed on the inner ceiling surface of the radome by a second dielectric attached to and locked to the second protrusion. can get.
【００１０】[0010]
【作用】パッチアンテナの上面を保護するレドームの突
起部と、パッチアンテナの下面を保護する筐体の突起部
が組み合わせられ、密着されることにより、パッチアン
テナの上面を保護するレドームと、パッチアンテナの下
面を保護する筐体の位置がしっかり固定され、平面アン
テナ全体の強度が向上する。The projection of the radome for protecting the upper surface of the patch antenna and the projection of the housing for protecting the lower surface of the patch antenna are combined and brought into close contact with each other to protect the upper surface of the patch antenna and the patch antenna. The position of the housing that protects the lower surface of the flat antenna is firmly fixed, and the strength of the entire planar antenna is improved.
【００１１】[0011]
【発明の実施の形態】次に、本発明の実施の形態につい
て図面を参照して詳細に説明する。図１に、本発明を実
施するための最良の形態の断面図を示す。図１を参照す
ると、本発明の最良の形態は、パッチアンテナ３の上面
を保護する略箱状で、その内側の天井面に下方に向けて
突出する棒状の突起部９を有し、且つ誘電体板より構成
されるレドーム１と、中心部に小さな穴を有する薄い円
形導体板より構成され、レドーム１の内側天井面に配置
された無給電素子２と、中心部に小さな穴を有した誘電
体基板４上に構成されるパッチアンテナ３と、パッチア
ンテナ３の構成要素である誘電体基板４、及び誘電体基
板４の下面に配置される導体より構成されるグランド板
５と、パッチアンテナ３を給電するためにパッチアンテ
ナ３に接続された給電線６と、パッチアンテナ３及び無
給電素子２を固定するための中心部に小さな穴を有する
２枚の円形の誘電体板７と、パッチアンテナ３の下面を
保護する略箱状で、その内側の底面に上方に向けて突出
する棒状の突起部１０を有し、且つ誘電体または導体よ
りなる筐体８とより構成され、無給電素子２を、レドー
ム１の棒状突起部９に下側より嵌め込み、さらに円形の
誘電体板７をその下側より嵌め込んで無給電素子２をレ
ドーム１に固定し、同様に、パッチアンテナ３を、筐体
８の棒状突起部１０に上側より嵌め込み、さらに円形の
誘電体板７をその上側より嵌め込んでパッチアンテナ３
を筐体８に固定し、最後に、レドーム１と筐体８とを閉
じるように組み合わせ、レドーム１の棒状の突起部９
と、筐体８の棒状の突起部１０が密着した構造となって
いる。Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a sectional view of a best mode for carrying out the present invention. Referring to FIG. 1, the best mode of the present invention has a substantially box shape for protecting the upper surface of a patch antenna 3, and has a rod-shaped projection 9 projecting downward on a ceiling surface inside the patch antenna 3, and has a dielectric shape. A radome 1 composed of a body plate, a parasitic element 2 composed of a thin circular conductor plate having a small hole in the center and disposed on the inner ceiling surface of the radome 1, and a dielectric having a small hole in the center. A patch antenna 3 formed on a body substrate 4, a dielectric substrate 4 as a component of the patch antenna 3, a ground plate 5 formed of a conductor disposed on the lower surface of the dielectric substrate 4, and a patch antenna 3 A feeder line 6 connected to the patch antenna 3 for feeding power, two circular dielectric plates 7 each having a small hole at the center for fixing the patch antenna 3 and the parasitic element 2, and a patch antenna Protect lower surface of 3 It has a substantially box-like shape, has a rod-shaped protrusion 10 protruding upward on the inner bottom surface thereof, and is constituted by a housing 8 made of a dielectric or a conductor. The parasitic element 2 is fixed to the radome 1 by fitting the circular dielectric plate 7 from below the rod-shaped protrusion 9, and the patch antenna 3 is similarly fitted to the rod-shaped protrusion of the housing 8. The patch antenna 3 is fitted into the portion 10 from above, and a circular dielectric plate 7 is further fitted from above.
Is fixed to the housing 8, and finally, the radome 1 and the housing 8 are combined so as to be closed, and the rod-shaped projection 9 of the radome 1 is closed.
And the rod-shaped projection 10 of the housing 8 is in close contact with the housing 8.
【００１２】次に、本実施形態の平面アンテナの動作に
ついて図面を参照して説明する。図１において、レドー
ム１の棒状の突起部９と、筐体８の棒状の突起部１０が
組み合わせられ、密着されることにより、レドーム１と
筐体８の位置がしっかり固定され、平面アンテナ全体の
強度が向上する。また、電気的には、給電線６により給
電されたパッチアンテナ３は、無給電素子２を空間的に
励振し、上側方向へ最大電界を放射するアンテナとして
動作する。Next, the operation of the planar antenna according to the present embodiment will be described with reference to the drawings. In FIG. 1, the rod-shaped projection 9 of the radome 1 and the rod-shaped projection 10 of the housing 8 are combined and adhered to each other, whereby the positions of the radome 1 and the housing 8 are firmly fixed, and the entire planar antenna is fixed. Strength is improved. Also, electrically, the patch antenna 3 fed by the feed line 6 spatially excites the parasitic element 2 and operates as an antenna that radiates the maximum electric field upward.
【００１３】[0013]
【実施例】本発明の平面アンテナの一実施例の断面図を
図１に、また、図１の突起部９および突起部１０の詳細
図を図２に、さらに、図１に示す平面アンテナのレドー
ム１、筐体８、突起部９及び１０を除いた斜視図を図３
に示す。1 is a sectional view of an embodiment of the planar antenna according to the present invention, FIG. 2 is a detailed view of the projections 9 and 10 of FIG. 1, and FIG. FIG. 3 is a perspective view excluding the radome 1, the housing 8, and the protrusions 9 and 10.
Shown in
【００１４】図１において、レドーム１は比誘電率が
２．０〜６．０、平坦部分の厚さ約２ｍｍの誘電体より
構成される。無給電素子２は、レドーム１の突起部９に
下側より嵌め込まれ、さらに、誘電体板７が突起部９に
同様に嵌め込まれ、無給電素子２を固定する。このと
き、無給電素子２及び誘電体板７の中心部の穴の直径
は、突起部９の直径とほぼ同等か少し大きい程度に設定
される。同様に、筐体８も、比誘電率が２．０〜６．
０、平坦部分の厚さ約２ｍｍまたはそれ以上の厚さの誘
電体または金属等の導体より構成される。筐体８の突起
部１０に上側から、上部にパッチアンテナ３及び給電線
６を、また、下部にグランド板５を配置した誘電体基板
４を嵌め込み、さらに、誘電体板７が突起部１０に同様
に嵌め込まれ、誘電体基板４を固定する。そして、この
レドーム１と筐体８は、突起部９と１０が丁度密着して
嵌め込まれるように組み合わせられる構造となってい
る。In FIG. 1, the radome 1 is made of a dielectric material having a relative permittivity of 2.0 to 6.0 and a flat portion having a thickness of about 2 mm. The parasitic element 2 is fitted into the projection 9 of the radome 1 from below, and the dielectric plate 7 is similarly fitted into the projection 9 to fix the parasitic element 2. At this time, the diameter of the hole at the center of the parasitic element 2 and the dielectric plate 7 is set to be approximately equal to or slightly larger than the diameter of the protrusion 9. Similarly, the housing 8 also has a relative dielectric constant of 2.0-6.
0, composed of a conductor such as a dielectric or metal having a thickness of about 2 mm or more in the flat portion. The patch antenna 3 and the feeder line 6 are fitted into the protrusion 10 of the housing 8 from the upper side, and the dielectric substrate 4 on which the ground plate 5 is arranged is fitted in the lower part. Similarly, they are fitted to fix the dielectric substrate 4. The radome 1 and the housing 8 have a structure in which the protrusions 9 and 10 are combined so as to be fitted closely.
【００１５】図２に、突起部９及び１０の斜視図を
（ａ），（ｂ）に、断面図を（ｃ），（ｄ）にそれぞれ
示す。突起部９及び１０は、（ａ）〜（ｄ）に示すよう
に、お互いに嵌め込み構造になっており、突起部９に突
起部１０の挿入部２２が嵌め込まれるとき、突起部９の
切り込み２１が開かれ、挿入部２２が嵌め込まれると、
切り込み２１が閉じ、抜けなくなる構造となっている。
また、突起部９に、無給電素子２、誘電体板７を、ま
た、突起部１０に、誘電体基板４、誘電体板７をそれぞ
れ嵌め込むと、突起部９及び１０に形成されたスカート
２３の端に誘電体板７が引っ掛かって無給電素子２、パ
ッチアンテナ３等が固定されるような構造になってい
る。2A and 2B are perspective views of the projections 9 and 10, and FIGS. 2C and 2D are cross-sectional views thereof. The projections 9 and 10 have a structure in which they are fitted into each other as shown in FIGS. 3A to 3D. When the insertion portion 22 of the projection 10 is fitted into the projection 9, the cuts 21 of the projection 9 are formed. Is opened and the insertion portion 22 is fitted,
The structure is such that the cut 21 is closed and cannot be removed.
When the parasitic element 2 and the dielectric plate 7 are fitted into the projection 9 and the dielectric substrate 4 and the dielectric plate 7 are fitted into the projection 10, respectively, the skirt formed on the projections 9 and 10 is formed. The structure is such that the dielectric plate 7 is hooked to the end of the reference numeral 23 and the parasitic element 2, the patch antenna 3 and the like are fixed.
【００１６】図３は、無給電素子２、誘電体板７、パッ
チアンテナ３、誘電体基板４及びグランド板５の位置関
係を示している。無給電素子２は、厚さ０．５〜２ｍｍ
のアルミニウムなどの導体板で構成され、直径ａは、
０．３〜０．５波長程度に選ばれる。誘電体板７は、比
誘電率が２．０〜６．０程度のプラスチック材料が用い
られ、通常は、厚さ３ｍｍ程度のポリカーボネイトが選
ばれる。このとき、直径ｃは、無給電素子２や誘電体基
板４を固定できる大きさであれば十分であり、０．２〜
０．３波長である。誘電体基板４は、厚さ０．５〜２．
０ｍｍ、比誘電率が２．０〜６．０程度でなるべく誘電
正接の少ない材料が選ばれる。誘電体基板４の上に構成
されるパッチアンテナ３の直径ｄは、０．２５〜０．４
波長で、パッチアンテナ３自体は導体で構成される。な
お、これらの中心部にあいている穴の直径ｂは、突起部
９及び１０を通すものであるが、０．０５波長以下が望
ましい。FIG. 3 shows the positional relationship among the parasitic element 2, the dielectric plate 7, the patch antenna 3, the dielectric substrate 4, and the ground plate 5. The parasitic element 2 has a thickness of 0.5 to 2 mm.
Of a conductor plate of aluminum or the like, and the diameter a is
It is selected to be about 0.3 to 0.5 wavelength. For the dielectric plate 7, a plastic material having a relative dielectric constant of about 2.0 to 6.0 is used, and usually, a polycarbonate having a thickness of about 3 mm is selected. At this time, the diameter c is sufficient as long as the parasitic element 2 and the dielectric substrate 4 can be fixed.
0.3 wavelength. The dielectric substrate 4 has a thickness of 0.5-2.
A material having a dielectric tangent of 0 mm and a relative dielectric constant of about 2.0 to 6.0 is selected as much as possible. The diameter d of the patch antenna 3 formed on the dielectric substrate 4 is 0.25 to 0.4.
At the wavelength, the patch antenna 3 itself is formed of a conductor. The diameter b of the hole at the center of these holes passes through the projections 9 and 10, but is preferably 0.05 wavelength or less.
【００１７】次に、本実施例の平面アンテナの動作につ
いて説明する。図１において、レドーム１の棒状の突起
部９と、筐体８の棒状の突起部１０が嵌め込まれ、密着
して組み合わせられることにより、レドーム１と筐体８
の位置がしっかり固定される。このため、平面アンテナ
全体の中央部に柱ができた状態となり、強度が向上す
る。構造的には、無給電素子２及び誘電体基板４が、誘
電体板７に固定され、組立時に接着剤やビスを使用せず
簡単に行える利点がある。また、電気的には、図３に示
すように、給電線６により給電されたパッチアンテナ３
は、無給電素子２を空間的に励振し、上側方向へ最大電
界を放射するアンテナとして動作する。Next, the operation of the planar antenna of this embodiment will be described. In FIG. 1, the rod-shaped protrusion 9 of the radome 1 and the rod-shaped protrusion 10 of the housing 8 are fitted into each other and tightly combined with each other, whereby the radome 1 and the housing 8 are combined.
Position is fixed firmly. Therefore, a pillar is formed at the center of the entire planar antenna, and the strength is improved. Structurally, the parasitic element 2 and the dielectric substrate 4 are fixed to the dielectric plate 7, and there is an advantage that the passive element 2 and the dielectric substrate 4 can be easily assembled without using an adhesive or screws. Electrically, as shown in FIG. 3, the patch antenna 3
Operates as an antenna that spatially excites the parasitic element 2 and radiates the maximum electric field upward.
【００１８】本発明のアンテナ素子は、一般的な平面ア
ンテナ、または、特に移動体衛星通信用の平面アンテナ
に使用するアンテナとして用いられる。The antenna element of the present invention is used as a general planar antenna or an antenna used for a planar antenna particularly for mobile satellite communication.
【００１９】[0019]
【発明の効果】本発明の第１の効果は、アンテナの折り
曲げ強度、圧縮強度等の機械的強度を改善すると共に、
耐環境性の改善をするということである。The first effect of the present invention is to improve mechanical strength such as bending strength and compression strength of an antenna,
This means improving the environmental resistance.
【００２０】本発明の第２の効果は、組立が容易になる
ということである。A second advantage of the present invention is that assembly is facilitated.
【図１】本発明の平面アンテナの断面図。FIG. 1 is a cross-sectional view of a planar antenna according to the present invention.
【図２】本発明の平面アンテナの突起部の詳細図。FIG. 2 is a detailed view of a projection of the planar antenna of the present invention.
【図３】本発明の平面アンテナの無給電素子、誘電体板
及びパッチアンテナの位置関係を示す斜視図。FIG. 3 is a perspective view showing a positional relationship among a parasitic element, a dielectric plate, and a patch antenna of the planar antenna according to the present invention.
【図４】従来技術のアンテナの断面図。FIG. 4 is a cross-sectional view of a conventional antenna.
【符号の説明】 １ レドーム ２ 無給電素子 ３ パッチアンテナ ４ 誘電体基板 ５ グランド板 ６ 給電線 ７ 誘電体板 ８ 筐体 ９ 突起部 １０ 突起部 ２１ 切り込み ２２ 挿入部 ２３ スカート ４１ レドーム ４２ 無給電素子 ４３ パッチアンテナ ４４ 誘電体基板 ４５ 同軸ケーブル[Description of Signs] 1 Radome 2 Parasitic element 3 Patch antenna 4 Dielectric substrate 5 Ground plate 6 Feeding line 7 Dielectric plate 8 Housing 9 Protrusion 10 Protrusion 21 Notch 22 Insertion part 23 Skirt 41 Radome 42 Parasitic element 43 patch antenna 44 dielectric substrate 45 coaxial cable
Claims (4)
たパッチアンテナと、前記筐体上に配置され、前記パッ
チアンテナとの間に間隙が生じるように該パッチアンテ
ナを覆うレドームと、該レドームの内側天井面に配置さ
れ、前記パッチアンテナとの間に空間を介在させて対向
する無給電素子とを含む平面アンテナにおいて、前記筐
体と前記レドームとで構成される空間内に、前記パッチ
アンテナと前記無給電素子との間の間隔を保つための支
えが設けられていることを特徴とする平面アンテナ。1. A casing, a patch antenna disposed on an inner bottom surface of the casing, and a radome disposed on the casing and covering the patch antenna such that a gap is formed between the patch antenna and the patch antenna. And a parasitic antenna disposed on the inner ceiling surface of the radome and including a parasitic element opposed to the patch antenna with a space interposed between the patch antenna and the patch antenna, in a space formed by the housing and the radome. And a support for maintaining an interval between the patch antenna and the parasitic element.
る請求項１記載の平面アンテナ。2. The planar antenna according to claim 1, wherein the support has a substantially rod shape.
され前記無給電素子の方へ突出する第１の突起部と、前
記レドームの内側天井面に形成され前記パッチアンテナ
の方へ突出し前記第１の突起部と組み合わされる第２の
突起部とで構成され、前記パッチアンテナに前記第１の
突起部を挿通するための穴が形成され、前記無給電素子
に前記第２の突起部を挿通するための穴が形成されてい
ることを特徴とする請求項２記載の平面アンテナ。3. A first protrusion formed on an inner bottom surface of the housing and protruding toward the parasitic element, and a support formed on an inner ceiling surface of the radome and protruding toward the patch antenna. A hole for inserting the first protrusion into the patch antenna; and a second protrusion formed in the parasitic element, the second protrusion being combined with the second protrusion combined with the first protrusion. 3. The planar antenna according to claim 2, wherein a hole for inserting the antenna is formed.
部に装着され且つ係止される第１の誘電体により前記筐
体の内側底面上に固定され、前記無給電素子が、前記第
２の突起部に装着され且つ係止される第２の誘電体によ
り前記レドームの内側天井面上に固定されていることを
特徴とする請求項３記載の平面アンテナ。4. The patch antenna is fixed on an inner bottom surface of the housing by a first dielectric attached and locked to the first projection, and the parasitic element is connected to the second antenna. 4. The planar antenna according to claim 3, wherein the planar antenna is fixed on the inner ceiling surface of the radome by a second dielectric attached to and locked to the projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20233396A JP2956598B2 (en) | 1996-07-31 | 1996-07-31 | Planar antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20233396A JP2956598B2 (en) | 1996-07-31 | 1996-07-31 | Planar antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1051227A true JPH1051227A (en) | 1998-02-20 |
| JP2956598B2 JP2956598B2 (en) | 1999-10-04 |
Family
ID=16455821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20233396A Expired - Fee Related JP2956598B2 (en) | 1996-07-31 | 1996-07-31 | Planar antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2956598B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003060414A (en) * | 2001-08-20 | 2003-02-28 | Furukawa Electric Co Ltd:The | Antenna unit |
| DE10318815A1 (en) * | 2003-04-17 | 2004-11-04 | Valeo Schalter Und Sensoren Gmbh | Slot-coupled radar antenna with radiation areas |
| US7386294B2 (en) | 2003-04-14 | 2008-06-10 | Mitsubishi Denki Kabushiki Kaisha | Dedicated short-range communication on-vehicle apparatus |
| JP2008141337A (en) * | 2006-11-30 | 2008-06-19 | Mitsumi Electric Co Ltd | Antenna system |
| JP2021057839A (en) * | 2019-10-01 | 2021-04-08 | 原田工業株式会社 | Antenna module |
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|---|---|---|---|---|
| JPS59207703A (en) * | 1983-05-11 | 1984-11-24 | Nippon Telegr & Teleph Corp <Ntt> | Microstrip antenna |
| JPS6374813U (en) * | 1986-11-06 | 1988-05-18 | ||
| JPH01284105A (en) * | 1988-05-11 | 1989-11-15 | Toyo Commun Equip Co Ltd | Stacked microstrip antenna |
| JPH039517U (en) * | 1989-06-09 | 1991-01-29 | ||
| JPH0374908A (en) * | 1989-08-16 | 1991-03-29 | Toyo Commun Equip Co Ltd | Microstrip antenna of stack type |
| JPH05121931A (en) * | 1991-10-26 | 1993-05-18 | Nec Corp | Plane antenna |
-
1996
- 1996-07-31 JP JP20233396A patent/JP2956598B2/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59207703A (en) * | 1983-05-11 | 1984-11-24 | Nippon Telegr & Teleph Corp <Ntt> | Microstrip antenna |
| JPS6374813U (en) * | 1986-11-06 | 1988-05-18 | ||
| JPH01284105A (en) * | 1988-05-11 | 1989-11-15 | Toyo Commun Equip Co Ltd | Stacked microstrip antenna |
| JPH039517U (en) * | 1989-06-09 | 1991-01-29 | ||
| JPH0374908A (en) * | 1989-08-16 | 1991-03-29 | Toyo Commun Equip Co Ltd | Microstrip antenna of stack type |
| JPH05121931A (en) * | 1991-10-26 | 1993-05-18 | Nec Corp | Plane antenna |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003060414A (en) * | 2001-08-20 | 2003-02-28 | Furukawa Electric Co Ltd:The | Antenna unit |
| JP4629928B2 (en) * | 2001-08-20 | 2011-02-09 | 古河電気工業株式会社 | Antenna unit |
| US7386294B2 (en) | 2003-04-14 | 2008-06-10 | Mitsubishi Denki Kabushiki Kaisha | Dedicated short-range communication on-vehicle apparatus |
| DE10318815A1 (en) * | 2003-04-17 | 2004-11-04 | Valeo Schalter Und Sensoren Gmbh | Slot-coupled radar antenna with radiation areas |
| JP2008141337A (en) * | 2006-11-30 | 2008-06-19 | Mitsumi Electric Co Ltd | Antenna system |
| JP2021057839A (en) * | 2019-10-01 | 2021-04-08 | 原田工業株式会社 | Antenna module |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2956598B2 (en) | 1999-10-04 |
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