JP2643924B2 - Communication antenna radome - Google Patents
Communication antenna radomeInfo
- Publication number
- JP2643924B2 JP2643924B2 JP58088083A JP8808383A JP2643924B2 JP 2643924 B2 JP2643924 B2 JP 2643924B2 JP 58088083 A JP58088083 A JP 58088083A JP 8808383 A JP8808383 A JP 8808383A JP 2643924 B2 JP2643924 B2 JP 2643924B2
- Authority
- JP
- Japan
- Prior art keywords
- frp
- radome
- ptfe sheet
- communication antenna
- 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.)
- Expired - Lifetime
Links
Classifications
-
- 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
- H01Q1/422—Housings not intimately mechanically associated with radiating elements, e.g. radome comprising two or more layers of dielectric material
Landscapes
- Details Of Aerials (AREA)
Description
【発明の詳細な説明】 〔発明の属する技術分野〕 本発明は、地上固定通信用アンテナ、特にパラボラ形
アンテナの前面を覆うレードームの表面材料の接着構造
の改良に関するものである。Description: TECHNICAL FIELD [0001] The present invention relates to an improvement in an adhesive structure of a surface material of a radome that covers the front surface of a ground fixed communication antenna, particularly a parabolic antenna.
屋外設置のパラボラ形アンテナ付無線通信装置（以
下、装置という）などは、一般に外部の自然環境から装
置を保護する目的で、ドームなどで保護している。ま
た、パラボラ形アンテナ（以下、アンテナという）の前
面は、その具備する性質から電波の透過損失の少なく、
かつ風荷重などの自然環境に耐える材料で被覆され、こ
れの材料として一般的には、繊維強化プラスチック（以
下、FRP（fiber reinforced plastics）という）を使用
している。2. Description of the Related Art Generally, a wireless communication device with a parabolic antenna (hereinafter, referred to as a device) installed outdoors is protected by a dome or the like for the purpose of protecting the device from an external natural environment. In addition, the front surface of a parabolic antenna (hereinafter referred to as an antenna) has a small transmission loss of radio waves due to its properties,
The material is coated with a material that can withstand the natural environment such as wind load, and generally uses fiber reinforced plastics (FRP).
近年、アンテナの使用周波数帯は準ミリ波帯、さらに
ミリ波帯とその使用範囲も広がり、特に高い周波数帯で
はアンテナ前面のFRPの着雪による電気的特性の劣化が
問題となる。従来、アテナにはFRPの着雪防止のためお
よび電気的特性劣化のために極薄のポリテトラフルオロ
エチレン（「テフロン」の商標で知られる、以下「PTF
E」という）シートをFRPの前面に被覆していた。このPT
FEシートは風などから保護するために、接着剤によりFR
Pの表面に貼着してある。このPTFEシートは前面接着す
ると、電気的特性の劣化が大きいので、電気的特性の影
響の比較的少ないアンテナのホーンの前面にあたるレー
ドームの中央部分と周囲部分だけを接着剤により貼着し
ていた。In recent years, the frequency band used by the antenna has been expanded to the quasi-millimeter wave band, and further to the millimeter wave band. Particularly in a high frequency band, deterioration of electrical characteristics due to snow accretion of the FRP in front of the antenna becomes a problem. Conventionally, Athena has been using ultra-thin polytetrafluoroethylene (known as the "Teflon" trademark, hereinafter referred to as "PTF
E ") sheet was coated on the front of the FRP. This PT
To protect the FE sheet from wind, FR
It is stuck on the surface of P. When the PTFE sheet is bonded to the front surface, the electrical characteristics are greatly deteriorated. Therefore, only the central portion and the peripheral portion of the radome, which is the front surface of the horn of the antenna, which is relatively unaffected by the electrical characteristics, are adhered with an adhesive.
しかし、PTFEシートをこの方法で貼着したレードーム
の構造には、 温度変化および湿度変化により表面にシワが発生
し、外観上好ましくない、 このシワに起因して鳥害、人害などによりPTFEシー
トが破損される恐れがある、 輸送時あるいは設置時などにPTFEシートに疵が付き
この箇所から破損の恐れがある、 PTFEシートの破損箇所から雨水などが入り、PTFEシ
ートとFRPとの間に溜り、電気的特性の劣化となる、 などの欠点があった。However, the structure of the radome on which the PTFE sheet is adhered by this method causes wrinkles on the surface due to changes in temperature and humidity, which is undesirable in appearance. The PTFE sheet may be scratched during transportation or installation, and may be damaged from this point.Rainwater etc. may enter from the damaged part of the PTFE sheet and collect between the PTFE sheet and the FRP. And the electrical characteristics are degraded.
本発明は、上記種々の欠点を解決するもので、 雨雪および塵埃の付着を防止して、電気的特性の劣
化を最小限に抑え、 PTFEシートのシワが生じないため、美観を有し、か
つ鳥害、人害などの恐れが解消され、 輸送時あるいは設置時などにPTFEシートに疵が付き
難く、 PTFEシートとFRPとの間に雨水などが溜まることの
ない 通信用アンテナのレードームを提供することを目的とす
る。The present invention solves the various disadvantages described above, and prevents rain, snow, and dust from adhering, minimizing deterioration of electrical characteristics, and having no wrinkles of the PTFE sheet. In addition, it provides a radome for communication antennas that eliminates the risk of bird damage and human injury, makes it difficult for PTFE sheets to be scratched during transportation or installation, and prevents rainwater from collecting between the PTFE sheet and FRP. The purpose is to do.
本発明は、FRPの表面全体にナトリウム置換を施した
極薄のPTFEシートをFRP原料樹脂によりFRP積層時点に完
全接着した構造であることを特徴とする。The present invention is characterized in that an ultra-thin PTFE sheet in which the entire surface of FRP has been subjected to sodium substitution is completely bonded at the time of FRP lamination with an FRP raw material resin.
以下図面により本発明の一実施例を詳細に説明する。
第１図は本発明実施例レードームの成形状態を示す縦断
図面、第２図は成形されたレードームの側面図である。
本実施例のFRPの成形は、一例としてハンドレイアップ
法により行われ、第１図に示すように、樹脂型１に剥離
剤２を施し、ガラスマット３およびガラスクロス４にポ
リエステル樹脂５を塗布しながら、ガラスマット３およ
びガラスクロス４を所望の厚さになるまで樹脂型１内で
交互に積層する。この積層表面にナトリウム置換処理を
施した極薄のPTFEシート６を重ね、脱泡しながらFRP原
料樹脂であるポリエステル樹脂５を接着剤として接着す
る。Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a longitudinal sectional view showing a molded state of a radome according to an embodiment of the present invention, and FIG. 2 is a side view of the molded radome.
The molding of the FRP of this embodiment is performed by a hand lay-up method as an example. As shown in FIG. 1, a release agent 2 is applied to a resin mold 1, and a polyester resin 5 is applied to a glass mat 3 and a glass cloth 4. Then, the glass mat 3 and the glass cloth 4 are alternately laminated in the resin mold 1 until a desired thickness is obtained. An ultra-thin PTFE sheet 6 that has been subjected to a sodium substitution treatment is superposed on the laminated surface, and the polyester resin 5 that is the FRP raw material resin is bonded as an adhesive while defoaming.
次いで、この状態で全体を過熱し、ポリエステル樹脂
５を硬化させてPTFEシート付FRP7を樹脂型１から離型す
る。その後FRP7のPTFシート６が積層されていない側か
ら電気的な要求に応じた厚さに仕上げてレードームに適
する外形に仕上げる。Next, in this state, the whole is overheated, the polyester resin 5 is cured, and the FRP 7 with the PTFE sheet is released from the resin mold 1. Thereafter, from the side where the PTF sheet 6 of the FRP 7 is not laminated, it is finished to a thickness according to the electrical requirements and finished to an outer shape suitable for a radome.
以上述べたように、本発明のレードームの構造はFRP
と極薄のPTFEシートとが完全に一体に成形されているの
で、 雨雪および塵埃の付着を防止して、電気的特性の劣
化を最小限に抑え、 PTFEシートのシワが発生しないため、美観を有し、
かつ鳥害、人害の恐れが無くなり、 万一PTFEシートに破損が生じても、破損箇所以外の
PTFEシートが完全にFRPに接着しているため、その箇所
から雨水の侵入の恐れが無く、 FRPとPTFEシートとの間に雨水が溜まることがな
く、電気的特性の劣化の恐れが無く、 レードームの組立工程でのPTFEシートの取付工事が
不要となり、作業効率が向上し、 組立作業者によるバラツキが無くなり、品質が安定
する、 優れた効果がある。As described above, the structure of the radome of the present invention is FRP
And the ultra-thin PTFE sheet are completely integrated, preventing the adhesion of rain, snow and dust, minimizing the deterioration of electrical characteristics, and preventing the PTFE sheet from wrinkling. Has,
In addition, there is no danger of bird damage and human injury, and even if the PTFE sheet is damaged,
Since the PTFE sheet is completely adhered to the FRP, there is no danger of rainwater entering from that point, no rainwater accumulates between the FRP and the PTFE sheet, and there is no danger of deterioration in electrical characteristics. This eliminates the need to install PTFE sheets in the assembly process, improves work efficiency, eliminates variations among assemblers, and stabilizes quality.
第１図は本発明実施例レードームの成形状態を示す縦断
面図。 第２図はその成形された表面PTFEシート付FRPのレード
ームの側面図。 １……樹脂型、２……離型剤、３……ガラスマット、４
……ガラスクロス、５……ポリエステル樹脂、６……ナ
トリウム置換処理を施した極薄のPTFEシート、７……表
面PTFEシート付FRP。FIG. 1 is a longitudinal sectional view showing a molded state of a radome according to an embodiment of the present invention. FIG. 2 is a side view of the molded FRP radome with a surface PTFE sheet. 1 ... resin type, 2 ... release agent, 3 ... glass mat, 4
... glass cloth, 5 ... polyester resin, 6 ... ultra-thin PTFE sheet treated with sodium substitution, 7 ... FRP with surface PTFE sheet.
フロントページの続き (56)参考文献 特開 昭51−119086（ＪＰ，Ａ) 実開 昭58−141603（ＪＰ，Ｕ) 実開 昭59−25808（ＪＰ，Ｕ) 電子通信学会技術研究報告 Ｖｏｌ. 76 Ｎｏ．97（Ａ・Ｐ76−51）Ｐ．49− 54，1976年８月27日Continuation of the front page (56) References JP-A-51-119086 (JP, A) JP-A-58-141603 (JP, U) JP-A-59-25808 (JP, U) IEICE Technical Report Vol. 76 No. 97 (A.P.76-51) P. 49-54, August 27, 1976
Claims (1)
アンテナのレードームにおいて、このプラスチックの表
面全体にナトリウム置換処理を施した極薄のポリテトラ
フルオロエチレンシートが積層され完全接着された構造
の通信用アンテナのレードーム。1. A communication antenna having a structure in which an ultra-thin polytetrafluoroethylene sheet obtained by performing sodium substitution on the entire surface of a plastic is laminated and completely adhered to a radome of a communication antenna on which fiber-reinforced plastic is laminated. Antenna radome.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58088083A JP2643924B2 (en) | 1983-05-18 | 1983-05-18 | Communication antenna radome |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58088083A JP2643924B2 (en) | 1983-05-18 | 1983-05-18 | Communication antenna radome |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59214304A JPS59214304A (en) | 1984-12-04 |
| JP2643924B2 true JP2643924B2 (en) | 1997-08-25 |
Family
ID=13932969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58088083A Expired - Lifetime JP2643924B2 (en) | 1983-05-18 | 1983-05-18 | Communication antenna radome |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2643924B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104470019A (en) * | 2014-12-11 | 2015-03-25 | 中国航空工业标准件制造有限责任公司 | Combined induction heating coil |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0536346U (en) * | 1991-10-22 | 1993-05-18 | 株式会社千代田製作所 | Cooling plate for paraffin block |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1351737A (en) * | 1970-04-20 | 1974-05-01 | British Steel Corp | Ferrites |
| JPS4875157A (en) * | 1972-01-11 | 1973-10-09 | ||
| JPS56717A (en) * | 1979-06-15 | 1981-01-07 | Nissan Motor Co Ltd | Radar unit with shield cover |
| JPS56106442A (en) * | 1980-01-26 | 1981-08-24 | Toshiba Eng Constr Co Ltd | Simultaneous calling device for atomic power plant |
| JPS56174209U (en) * | 1980-05-26 | 1981-12-23 |
-
1983
- 1983-05-18 JP JP58088083A patent/JP2643924B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| 電子通信学会技術研究報告 Ｖｏｌ．７６ Ｎｏ．９７（Ａ・Ｐ７６−５１）Ｐ．４９−５４，１９７６年８月２７日 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104470019A (en) * | 2014-12-11 | 2015-03-25 | 中国航空工业标准件制造有限责任公司 | Combined induction heating coil |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59214304A (en) | 1984-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4906695B2 (en) | Radome and manufacturing method thereof | |
| CA2749535C (en) | Furlable shape-memory spacecraft reflector with offset feed and a method for packaging and managing the deployment of same | |
| EP1314548A1 (en) | Composite material, formed product, and prepreg | |
| JP6504993B2 (en) | Method of manufacturing curved sandwich structure | |
| US20070089285A1 (en) | Method for manufacturing a structurally integrated antenna | |
| US4191604A (en) | Method of constructing three-dimensionally curved, knit wire reflector | |
| EP1418046A1 (en) | Composite sheet material | |
| US4242686A (en) | Three-dimensionally curved, knit wire electromagnetic wave reflector | |
| TWI304769B (en) | Padome with polyester-polyarylate fibers and a method of making same | |
| JP2643924B2 (en) | Communication antenna radome | |
| EP0186517B1 (en) | Electromagnetic reflection body | |
| JPS6089361A (en) | Flexible film material | |
| US20090219222A1 (en) | Reflector | |
| CN111864374B (en) | 5G base station millimeter wave antenna housing and manufacturing method thereof | |
| JP3033184B2 (en) | Lens antenna | |
| JPS59167103A (en) | Parabolic reflective plate for antenna | |
| CN218569228U (en) | Antenna house connection limit structure | |
| CN112290209B (en) | C-band super-surface frequency selective antenna housing and manufacturing process thereof | |
| JPH0572122B2 (en) | ||
| JP2863615B2 (en) | Composite and molding method thereof | |
| JP3546247B2 (en) | Speaker diaphragm | |
| JPS6181002A (en) | Forming method of radio wave reflecting plate for parabolic antenna | |
| CN117691353A (en) | Design method and manufacturing method of low-cost power-resistant radome | |
| JP2000091821A (en) | Antenna device | |
| KR960007272B1 (en) | Electric absorption board and the method for producing the same |