WO2009157537A1 - Sheet radome and antenna having same - Google Patents
Sheet radome and antenna having same Download PDFInfo
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- WO2009157537A1 WO2009157537A1 PCT/JP2009/061707 JP2009061707W WO2009157537A1 WO 2009157537 A1 WO2009157537 A1 WO 2009157537A1 JP 2009061707 W JP2009061707 W JP 2009061707W WO 2009157537 A1 WO2009157537 A1 WO 2009157537A1
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- antenna
- radome
- sheet
- seat
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
Definitions
- the present invention relates to a seat radome having a function of mainly covering the mirror surface of a parabolic antenna or a mirror-type antenna.
- a sheet-like radome attached to a mirror antenna has a structure in which a flat sheet is attached to the opening surface of a cylindrical metal shroud, but its mass is heavy and the wind receiving load during wind receiving is large. It has become a problem and is an expensive antenna.
- a sheet-like radome to be attached to a specular antenna has a structure in which a flat sheet is attached to an opening surface of a cylindrical metal shroud.
- a flat circular sheet 6 is fixed to an opening surface of a cylindrical metal shroud 5 attached to the outer periphery of the opening surface of the antenna 1 with a ring 7 and a bolt / nut 8. It was a stretch. For this reason, the wind receiving load has a disadvantage in that it becomes an expensive and heavy antenna having a cylindrical shape which is disadvantageous compared to the conical shape.
- an object of the present invention is to provide a seat radome having a light wind receiving load and an antenna including the same.
- a seat radome comprising a sheet having a conical or polygonal pyramid side shape and a framework for supporting the sheet, wherein the axis of the cone or pyramid coincides with the axis of the antenna.
- the area when the radome is attached to the antenna is almost the same as the area when the radome is not attached to the antenna, both when viewed from the front side and from the side direction. This can be reduced compared to the invention.
- (A) is a plan view of an antenna including a rod and joint of a radome according to an embodiment of the present invention
- (b) is a side view of an antenna including a rod and joint of a radome sheet according to an embodiment of the present invention. It is.
- (A) is a top view of the antenna with which the radome sheet
- (b) is a side view of the antenna with which the radome sheet
- (A) is a plane assembly drawing of the rod and joint of the radome according to the embodiment of the present invention
- (b) is a side assembly diagram of the rod and joint of the radome according to the embodiment of the present invention.
- (A) is a top view of the sheet
- (b) is a side view of the sheet
- (A) is a perspective view of a cone
- (b) is a perspective view of a quadrangular pyramid
- (c) is a perspective view of a pentagonal pyramid.
- (A) is a plan view of an antenna to which a radome according to the related invention is attached
- (b) is a side view of the antenna to which a radome according to the related invention is attached.
- FIG. 1A is a plan view of an antenna including a radome rod and joint according to an embodiment of the present invention
- FIG. 1B includes a radome sheet rod and joint according to an embodiment of the present invention. It is a side view of an antenna.
- the antenna 1 is usually a parabolic antenna or a mirror antenna.
- a rod 3 made of metal or resin is placed and fixed on the upper part of the primary radiator 2 between the end of the opening surface of the antenna 1 and the apex of the antenna central axis to form a conical radome frame.
- FIG. 2A is a plan view of an antenna to which a radome sheet according to an embodiment of the present invention is attached
- FIG. 2B is a side view of the antenna to which a radome sheet according to an embodiment of the present invention is attached. is there.
- a sheet 4 processed into a conical shape is attached to cover the framework shown in FIGS.
- FIG. 3 (a) is a plan assembly view of the radome rod and joint according to the embodiment of the present invention
- FIG. 3 (b) is a side assembly view of the radome rod and joint according to the embodiment of the present invention.
- the rod 3 (b) is arranged at the center joint A3 (a) toward the outer periphery of the antenna, and each rod 3 (b) is attached to the outer periphery of the antenna by a joint B3 (c).
- FIG. 4A is a plan view of a radome sheet according to an embodiment of the present invention
- FIG. 4B is a side view of a radome sheet according to an embodiment of the present invention.
- the sheet 4 has an unfolded dimension so as to be conical with the rod 3 at the time of processing, and the sheet 4 and the framework are joined by heat fusion or the like.
- the end of the sheet 4 is fixed at the end of the antenna opening surface.
- FIG. 5 is a development view of the radome seat 4 according to the embodiment of the present invention. 3 (a) and 3 (b), the number of rods 3 (b) is 4, but other numbers (for example, 3, 5, 6,...) May be used.
- the rod material may be metal, resin, natural fiber, synthetic fiber, glass fiber, fiber reinforced plastic or wood.
- the joint material may also be metal, resin, natural fiber, synthetic fiber, glass fiber, fiber reinforced plastic or wood.
- the joint and the rod may be integrally formed.
- the sheet 4 has a side surface of a polygonal pyramid such as a quadrangular pyramid (see FIG. 6B) or a pentagonal pyramid (see FIG. 6C). You may have a shape.
- the central axis of the cone is made to coincide with the central axis of the antenna, and the apex of the cone is made to substantially coincide with the apex of the antenna.
- the expensive and heavy shroud 5 can be reduced, (1) the wind receiving load is reduced, (2) the inexpensive and (3) lightweight antenna is realized. be able to.
- the seat radome of the present embodiment forms a conical shape with a plurality of rods made of metal or resin as a vertex with the antenna central axis at the top of the primary radiator as an apex, and the conical shape is formed from above the skeleton.
- the processed sheet is fixed. Since there is a mountain-shaped framework, the conical shape can be maintained even when a wind load is applied, and the wind load can be reduced. Further, by adopting a skeleton structure, the sheet is loosened when receiving wind, and interference with the primary radiator disposed in the radome can be prevented, and the size can be minimized. With this conical structure, a metal shroud can be reduced, so that a lightweight and inexpensive antenna can be realized.
- the present invention can be used for an antenna such as a parabolic antenna or a mirror-type antenna.
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Abstract
Disclosed is a sheet radome wherein a wind load to be applied onto the radome can be lightened. The sheet radome comprises a sheet having a side surface shape of a circular cone or polygonal pyramid and a skeleton for supporting the sheet. The axis of the circular cone or polygonal pyramid is aligned with the axis of an antenna.
Description
本発明は、主にパラボラアンテナや鏡面系アンテナの鏡面をカバーする機能を有するシートレドームに関する。
The present invention relates to a seat radome having a function of mainly covering the mirror surface of a parabolic antenna or a mirror-type antenna.
一般に、鏡面系アンテナに取り付けるシート状のレドームは、円筒状の金属製シュラウドの開口面に平坦なシートを取り付ける構造となっているが、質量が重く、受風時の受風荷重が大きいことが問題となっており、さらに高価なアンテナとなっている。
特開２００４－３２０２８３号公報
In general, a sheet-like radome attached to a mirror antenna has a structure in which a flat sheet is attached to the opening surface of a cylindrical metal shroud, but its mass is heavy and the wind receiving load during wind receiving is large. It has become a problem and is an expensive antenna.
JP 2004-320283 A
一般に、鏡面系アンテナに取り付けるシート状のレドームは、円筒状の金属製シュラウドの開口面に平坦なシートを取り付ける構造となっているが、関連した発明によるアンテナのレドーム(radome)形状および構造は、図７に示すように、アンテナ１の開口面外周部に取り付けた円筒状の金属製シュラウド(shroud)５の開口面に平坦な円状のシート６をリング７およびボルト・ナット８で固定して張るものであった。
このため、受風荷重では円錐形状に比較して不利である円筒形状の高価で重いアンテナとなってしまうという欠点があった。 In general, a sheet-like radome to be attached to a specular antenna has a structure in which a flat sheet is attached to an opening surface of a cylindrical metal shroud. As shown in FIG. 7, a flat circular sheet 6 is fixed to an opening surface of a cylindrical metal shroud 5 attached to the outer periphery of the opening surface of the antenna 1 with a ring 7 and a bolt / nut 8. It was a stretch.
For this reason, the wind receiving load has a disadvantage in that it becomes an expensive and heavy antenna having a cylindrical shape which is disadvantageous compared to the conical shape.
このため、受風荷重では円錐形状に比較して不利である円筒形状の高価で重いアンテナとなってしまうという欠点があった。 In general, a sheet-like radome to be attached to a specular antenna has a structure in which a flat sheet is attached to an opening surface of a cylindrical metal shroud. As shown in FIG. 7, a flat circular sheet 6 is fixed to an opening surface of a cylindrical metal shroud 5 attached to the outer periphery of the opening surface of the antenna 1 with a ring 7 and a bolt / nut 8. It was a stretch.
For this reason, the wind receiving load has a disadvantage in that it becomes an expensive and heavy antenna having a cylindrical shape which is disadvantageous compared to the conical shape.
また、引用文献１に記載されているレドーム付アンテナも、レドームを取り付けたときの面積が正面方向から見ても側面方向から見てもレドームを取り付けないときの面積に比較して広いため、受風荷重が大きい。
そこで、本発明は、受風荷重が軽いシートレドーム及びそれを含んだアンテナを提供することを目的とする。 In addition, the antenna with a radome described in Cited Document 1 has a larger area when the radome is attached than the area when the radome is not attached when viewed from the front side or the side direction. The wind load is large.
Accordingly, an object of the present invention is to provide a seat radome having a light wind receiving load and an antenna including the same.
そこで、本発明は、受風荷重が軽いシートレドーム及びそれを含んだアンテナを提供することを目的とする。 In addition, the antenna with a radome described in Cited Document 1 has a larger area when the radome is attached than the area when the radome is not attached when viewed from the front side or the side direction. The wind load is large.
Accordingly, an object of the present invention is to provide a seat radome having a light wind receiving load and an antenna including the same.
本発明によれば、円錐又は多角錐の側面の形状を有するシートと、前記シートを支える骨組みと、を備え、前記円錐又は角錐の軸とアンテナの軸とは一致することを特徴とするシートレドームが提供される。
According to the present invention, there is provided a seat radome comprising a sheet having a conical or polygonal pyramid side shape and a framework for supporting the sheet, wherein the axis of the cone or pyramid coincides with the axis of the antenna. Is provided.
本発明によれば、正面方向から見ても側面方向から見てもレドームをアンテナに取り付けたときの面積が、レドームをアンテナに取り付けないときの面積とほぼ同じであるため、受風荷重を関連発明に比べて軽減することができる。
According to the present invention, the area when the radome is attached to the antenna is almost the same as the area when the radome is not attached to the antenna, both when viewed from the front side and from the side direction. This can be reduced compared to the invention.
（ａ）は、本発明の実施形態によるレドームのロッド及びジョイントを含んだアンテナの平面図であり、（ｂ）は、本発明の実施形態によるレドームシートのロッド及びジョイントを含んだアンテナの側面図である。
(A) is a plan view of an antenna including a rod and joint of a radome according to an embodiment of the present invention, and (b) is a side view of an antenna including a rod and joint of a radome sheet according to an embodiment of the present invention. It is.
（ａ）は、本発明の実施形態によるレドームシートが取り付けられたアンテナの平面図であり、（ｂ）は、本発明の実施形態によるレドームシートが取り付けられたアンテナの側面図である。
(A) is a top view of the antenna with which the radome sheet | seat by embodiment of this invention was attached, (b) is a side view of the antenna with which the radome sheet | seat by embodiment of this invention was attached.
（ａ）は、本発明の実施形態によるレドームのロッド及びジョイントの平面組立図であり、（ｂ）は、本発明の実施形態によるレドームのロッド及びジョイントの側面組立図である。
（ａ）は、本発明の実施形態によるレドームのシートの平面図であり、（ｂ）は、本発明の実施形態によるレドームのシートの側面図である。
本発明の実施形態によるレドームのシートの展開図である。
（ａ）は円錐の斜視図、（ｂ）は四角錐の斜視図、（ｃ）は五角錐の斜視図を表す。
(A) is a plane assembly drawing of the rod and joint of the radome according to the embodiment of the present invention, and (b) is a side assembly diagram of the rod and joint of the radome according to the embodiment of the present invention.
(A) is a top view of the sheet | seat of the radome by embodiment of this invention, (b) is a side view of the sheet | seat of the radome by embodiment of this invention. It is an expanded view of the sheet | seat of the radome by embodiment of this invention. (A) is a perspective view of a cone, (b) is a perspective view of a quadrangular pyramid, and (c) is a perspective view of a pentagonal pyramid.
（ａ）は、関連した発明によるレドームが取り付けられたアンテナの平面図であり、（ｂ）は、関連した発明によるレドームが取り付けられたアンテナの側面図である。
(A) is a plan view of an antenna to which a radome according to the related invention is attached, and (b) is a side view of the antenna to which a radome according to the related invention is attached.
１ アンテナ
２ 一次放射器
３ ロッド
４ シート 1 Antenna 2 Primary radiator 3Rod 4 Sheet
２ 一次放射器
３ ロッド
４ シート 1 Antenna 2 Primary radiator 3
以下、図面を参照して本発明を実施するための最良の形態について詳細に説明する。図１（ａ）は、本発明の実施形態によるレドームのロッド及びジョイントを含んだアンテナの平面図であり、図１（ｂ）は、本発明の実施形態によるレドームシートのロッド及びジョイントを含んだアンテナの側面図である。
Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings. FIG. 1A is a plan view of an antenna including a radome rod and joint according to an embodiment of the present invention, and FIG. 1B includes a radome sheet rod and joint according to an embodiment of the present invention. It is a side view of an antenna.
アンテナ１は、通常、パラボラアンテナまたは鏡面系のアンテナである。このアンテナ１の開口面端部とアンテナ中心軸の頂点間の一次放射器２上部に金属製または樹脂製などのロッド３を配置、固定し、円錐形状のレドーム骨組みが形成されている。
The antenna 1 is usually a parabolic antenna or a mirror antenna. A rod 3 made of metal or resin is placed and fixed on the upper part of the primary radiator 2 between the end of the opening surface of the antenna 1 and the apex of the antenna central axis to form a conical radome frame.
図２（ａ）は、本発明の実施形態によるレドームシートが取り付けられたアンテナの平面図であり、図２（ｂ）は、本発明の実施形態によるレドームシートが取り付けられたアンテナの側面図である。図１（ａ）、図１（ｂ）で示した骨組みの上に、円錐形状に加工したシート４が覆いかぶさるように取り付けられている。
FIG. 2A is a plan view of an antenna to which a radome sheet according to an embodiment of the present invention is attached, and FIG. 2B is a side view of the antenna to which a radome sheet according to an embodiment of the present invention is attached. is there. A sheet 4 processed into a conical shape is attached to cover the framework shown in FIGS.
図３（ａ）は、本発明の実施形態によるレドームのロッド及びジョイントの平面組立図であり、図３（ｂ）は、本発明の実施形態によるレドームのロッド及びジョイントの側面組立図である。中心となるジョイントＡ３（ａ）にロッド３（ｂ）をアンテナ外周に向けて配置し、それぞれのロッド３（ｂ）はジョイントＢ３（ｃ）でアンテナ外周部に取り付けられている。
3 (a) is a plan assembly view of the radome rod and joint according to the embodiment of the present invention, and FIG. 3 (b) is a side assembly view of the radome rod and joint according to the embodiment of the present invention. The rod 3 (b) is arranged at the center joint A3 (a) toward the outer periphery of the antenna, and each rod 3 (b) is attached to the outer periphery of the antenna by a joint B3 (c).
図４（ａ）は、本発明の実施形態によるレドームのシートの平面図であり、（ｂ）は、本発明の実施形態によるレドームのシートの側面図である。シート４は加工時にロッド３にあわせた円錐形状となるような展開寸法とし、熱融着などによりシート４と骨組みとを接合する。シート４の端部はアンテナ開口面端部で固定する構造となっている。
図５は、本発明の実施形態によるレドームのシート４の展開図である。
図３（ａ）、（ｂ）では、ロッド３（ｂ）の数は、４であるが、これ以外の数（例えば、３、５、６、・・・）であってもよい。 FIG. 4A is a plan view of a radome sheet according to an embodiment of the present invention, and FIG. 4B is a side view of a radome sheet according to an embodiment of the present invention. Thesheet 4 has an unfolded dimension so as to be conical with the rod 3 at the time of processing, and the sheet 4 and the framework are joined by heat fusion or the like. The end of the sheet 4 is fixed at the end of the antenna opening surface.
FIG. 5 is a development view of theradome seat 4 according to the embodiment of the present invention.
3 (a) and 3 (b), the number of rods 3 (b) is 4, but other numbers (for example, 3, 5, 6,...) May be used.
図５は、本発明の実施形態によるレドームのシート４の展開図である。
図３（ａ）、（ｂ）では、ロッド３（ｂ）の数は、４であるが、これ以外の数（例えば、３、５、６、・・・）であってもよい。 FIG. 4A is a plan view of a radome sheet according to an embodiment of the present invention, and FIG. 4B is a side view of a radome sheet according to an embodiment of the present invention. The
FIG. 5 is a development view of the
3 (a) and 3 (b), the number of rods 3 (b) is 4, but other numbers (for example, 3, 5, 6,...) May be used.
ロッドの材料は、金属、樹脂、天然繊維、合成繊維、ガラス繊維、繊維強化プラスチック又は木材であってもよい。ジョイントの材料も、金属、樹脂、天然繊維、合成繊維、ガラス繊維、繊維強化プラスチック又は木材であってよい。
ジョイントとロッドは、一体成形されていてもよい。 The rod material may be metal, resin, natural fiber, synthetic fiber, glass fiber, fiber reinforced plastic or wood. The joint material may also be metal, resin, natural fiber, synthetic fiber, glass fiber, fiber reinforced plastic or wood.
The joint and the rod may be integrally formed.
ジョイントとロッドは、一体成形されていてもよい。 The rod material may be metal, resin, natural fiber, synthetic fiber, glass fiber, fiber reinforced plastic or wood. The joint material may also be metal, resin, natural fiber, synthetic fiber, glass fiber, fiber reinforced plastic or wood.
The joint and the rod may be integrally formed.
シート４は、円錐（図６（ａ）参照）の側面の形状を有する代わりに、四角錐（図６（ｂ）参照）、五角錐（図６（ｃ）参照）などの多角錐の側面の形状を有していてもよい。但し、受風荷重をできる限り軽減させるために、錐の中心軸をアンテナの中心軸に一致させ、また、錐の頂点がアンテナの頂点とほぼ一致するようにする。
Instead of having the shape of the side surface of the cone (see FIG. 6A), the sheet 4 has a side surface of a polygonal pyramid such as a quadrangular pyramid (see FIG. 6B) or a pentagonal pyramid (see FIG. 6C). You may have a shape. However, in order to reduce the wind receiving load as much as possible, the central axis of the cone is made to coincide with the central axis of the antenna, and the apex of the cone is made to substantially coincide with the apex of the antenna.
以上説明したように、本実施形態のシートレドームによれば、高価で重いシュラウド５を削減でき、（１）受風荷重を軽減し、（２）安価で、（３）軽量なアンテナを実現することができる。
As described above, according to the seat radome of the present embodiment, the expensive and heavy shroud 5 can be reduced, (1) the wind receiving load is reduced, (2) the inexpensive and (3) lightweight antenna is realized. be able to.
また、本実施形態のシートレドームは、金属または樹脂性などの複数のロッドで一次放射器上部のアンテナ中心軸を頂点とした円錐の形状をなす骨組みを形成し、その骨組みの上から円錐形状に加工したシートを固定するものである。山状の骨組みがあるため風荷重を受けた場合にも円錐形状を維持することができ、風荷重の軽減ができる。また、骨組み構造とすることにより、受風時にシートが弛み、レドーム内に配置されている一次放射器への干渉を防ぐことができ、最小限の大きさとすることができる。この円錐形状の構造とすることで金属製シュラウドが削減できるため軽量、安価なアンテナを実現することができる。
Further, the seat radome of the present embodiment forms a conical shape with a plurality of rods made of metal or resin as a vertex with the antenna central axis at the top of the primary radiator as an apex, and the conical shape is formed from above the skeleton. The processed sheet is fixed. Since there is a mountain-shaped framework, the conical shape can be maintained even when a wind load is applied, and the wind load can be reduced. Further, by adopting a skeleton structure, the sheet is loosened when receiving wind, and interference with the primary radiator disposed in the radome can be prevented, and the size can be minimized. With this conical structure, a metal shroud can be reduced, so that a lightweight and inexpensive antenna can be realized.
本願は、日本の特願２００８－１６８６７６（２００８年６月２７日に出願）に基づいたものであり、又、特願２００８－１６８６７６に基づくパリ条約の優先権を主張するものである。特願２００８－１６８６７６の開示内容は、特願２００８－１６８６７６を参照することにより本明細書に援用される。 本発明の代表的な実施形態が詳細に述べられたが、様々な変更(changes)、置き換え(substitutions)及び選択(alternatives)が請求項で定義された発明の精神と範囲から逸脱することなくなされることが理解されるべきである。また、仮にクレームが出願手続きにおいて補正されたとしても、クレームされた発明の均等の範囲は維持されるものと発明者は意図する。
This application is based on Japanese Patent Application No. 2008-168676 (filed on June 27, 2008), and claims the priority of the Paris Convention based on Japanese Patent Application No. 2008-168676. The disclosure of Japanese Patent Application No. 2008-168676 is incorporated herein by reference to Japanese Patent Application No. 2008-168676. Although representative embodiments of the present invention have been described in detail, various changes, substitutions and alternatives may be made without departing from the spirit and scope of the invention as defined in the claims. It should be understood. Moreover, even if the claim is amended in the application procedure, the inventor intends that the equivalent scope of the claimed invention is maintained.
本発明は、パラボラアンテナ又は鏡面系のアンテナなどのアンテナに利用することができる。
The present invention can be used for an antenna such as a parabolic antenna or a mirror-type antenna.
Claims (6)
- 円錐又は多角錐の側面の形状を有するシートと、
前記シートを支える骨組みと、
を備え、
前記円錐又は角錐の軸とアンテナの軸とは一致することを特徴とするシートレドーム。 A sheet having a conical or polygonal side shape;
A framework that supports the seat;
With
The seat radome according to claim 1, wherein an axis of the cone or pyramid coincides with an axis of the antenna. - 請求項１に記載のシートレドームであって、
前記骨組みは、複数のロッドと該複数のロッドを結合するジョイントとを備えることを特徴とするシートレドーム。 The seat radome according to claim 1,
The frame includes a plurality of rods and a joint that couples the plurality of rods. - 請求項２に記載のシートレドームであって、
前記複数のロッドと前記ジョイントとは一体成形されていることを特徴とするシートレドーム。 The seat radome according to claim 2,
The seat radome, wherein the plurality of rods and the joint are integrally formed. - 請求項２に記載のシートレドームであって、
前記ロッドの材料は、金属、樹脂、天然繊維、合成繊維、ガラス繊維、繊維強化プラスチック又は木材であることを特徴とするシートレドーム。 The seat radome according to claim 2,
A material for the rod is a metal, resin, natural fiber, synthetic fiber, glass fiber, fiber reinforced plastic, or wood. - 請求項２に記載のシートレドームであって、
前記ジョイントの材料は、金属、樹脂、天然繊維、合成繊維、ガラス繊維、繊維強化プラスチック又は木材であることを特徴とするシートレドーム。 The seat radome according to claim 2,
A material for the joint is a metal, resin, natural fiber, synthetic fiber, glass fiber, fiber reinforced plastic, or wood. - 請求項１乃至５の何れか１項に記載のシートレドームを備えることを特徴とするアンテナ。 An antenna comprising the seat radome according to any one of claims 1 to 5.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008-168676 | 2008-06-27 | ||
| JP2008168676 | 2008-06-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2009157537A1 true WO2009157537A1 (en) | 2009-12-30 |
Family
ID=41444597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2009/061707 WO2009157537A1 (en) | 2008-06-27 | 2009-06-26 | Sheet radome and antenna having same |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2009157537A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013172430A (en) * | 2012-02-23 | 2013-09-02 | Nippon Dengyo Kosaku Co Ltd | Antenna device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6082813U (en) * | 1983-11-14 | 1985-06-08 | 日東電工株式会社 | Antenna reflector cover structure |
| JP2004320283A (en) * | 2003-04-15 | 2004-11-11 | Ueda Japan Radio Co Ltd | Antenna system with radome, and radome for preventing snow accretion/ice accretion |
| JP2007259001A (en) * | 2006-03-23 | 2007-10-04 | Nec Corp | Antenna system and manufacturing method thereof |
-
2009
- 2009-06-26 WO PCT/JP2009/061707 patent/WO2009157537A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6082813U (en) * | 1983-11-14 | 1985-06-08 | 日東電工株式会社 | Antenna reflector cover structure |
| JP2004320283A (en) * | 2003-04-15 | 2004-11-11 | Ueda Japan Radio Co Ltd | Antenna system with radome, and radome for preventing snow accretion/ice accretion |
| JP2007259001A (en) * | 2006-03-23 | 2007-10-04 | Nec Corp | Antenna system and manufacturing method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013172430A (en) * | 2012-02-23 | 2013-09-02 | Nippon Dengyo Kosaku Co Ltd | Antenna device |
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