JPH03171802A - Large-sized plane antenna - Google Patents
Large-sized plane antennaInfo
- Publication number
- JPH03171802A JPH03171802A JP30988589A JP30988589A JPH03171802A JP H03171802 A JPH03171802 A JP H03171802A JP 30988589 A JP30988589 A JP 30988589A JP 30988589 A JP30988589 A JP 30988589A JP H03171802 A JPH03171802 A JP H03171802A
- Authority
- JP
- Japan
- Prior art keywords
- skin layer
- radiating element
- kfrp
- reception
- fiber reinforced
- 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
- 239000004020 conductor Substances 0.000 claims abstract description 30
- 239000011162 core material Substances 0.000 claims abstract description 21
- 239000004918 carbon fiber reinforced polymer Substances 0.000 claims abstract description 10
- 229920006231 aramid fiber Polymers 0.000 claims abstract description 9
- 239000011151 fibre-reinforced plastic Substances 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 abstract description 11
- 102100040287 GTP cyclohydrolase 1 feedback regulatory protein Human genes 0.000 description 3
- 101710185324 GTP cyclohydrolase 1 feedback regulatory protein Proteins 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分デｆ〕
この発明は大形平面アンテナに関するものである．
〔従来の技術〕
第１図は大形平面アンテナの斜視図，第３図は従来の大
形平面アンテナの一部の断面図である。[Detailed Description of the Invention] [Industrial Application Definition] This invention relates to a large planar antenna. [Prior Art] FIG. 1 is a perspective view of a large planar antenna, and FIG. 3 is a sectional view of a portion of a conventional large planar antenna.
図において，（ｌ）は大形平面アンテナ，（２）はこの
アンテナ（１）の送受信側に貼付けられた放射素子、（
３）はアンテナ（１）を形或するハニカムコア等のコア
材、（４）はコア材（３）の放射素子（２）取付側に固
着されたガラス繊維強化プラスチック（以下、ＧＦＲＩ
’という）製のスキン層、（５）はコア材（３）の反対
側に固着されたＧＦＲＰ製のスキン層、（６）はスキン
層（５）に貼付けられた銅箔等の導体からなる地導体、
（７）はコネクタであって、芯線（７ａ）がはんだ（８
ａ）によって放射素子（２）に接続し、外部導体（７ｂ
）がはんだ（８ｂ）によって地導体（６）に接続してい
る．（９）は芯線（７ａ）および外部導体（７ｂ）に接
続する同軸線． （１０）は増幅器、（１１）はブラウ
ン管等の表示器である．コア材（３）およびスキン層（
４），（５）は低誘電率の材料からなる。In the figure, (l) is a large planar antenna, (2) is a radiating element attached to the transmitting and receiving side of antenna (1), and (
3) is a core material such as a honeycomb core that forms the antenna (1), and (4) is a glass fiber reinforced plastic (hereinafter referred to as GFRI) fixed to the radiating element (2) mounting side of the core material (3).
'), (5) is a GFRP skin layer fixed to the opposite side of the core material (3), and (6) is a conductor such as copper foil attached to the skin layer (5). earth conductor,
(7) is a connector in which the core wire (7a) is soldered (8
a) to the radiating element (2) and an outer conductor (7b
) is connected to the ground conductor (6) by solder (8b). (9) is a coaxial line connected to the core wire (7a) and the outer conductor (7b). (10) is an amplifier, and (11) is a display such as a cathode ray tube. Core material (3) and skin layer (
4) and (5) are made of a material with a low dielectric constant.
上記のように構威された大形平面アンテナ（１）は一般
に屋外に設置され，送信または受信の方向に放射素子（
２）を向けて送受信を行う．放射素子（２）の形状とコ
ア材（３）の厚さは使用周波数によって定められており
、受信の場合は放射素子（２）と地導体（６）間に生じ
る電界が，特定周波数に対して、芯線（７ａ）および外
部導体（７ｂ）を通してコネクタ（７）および同軸線（
９）に給電され、増幅器（ｌＯ）で増幅されて表示器（
ｌ１）に情報として表示される。A large planar antenna (1) configured as described above is generally installed outdoors, and has a radiating element (
2) Aim the camera to send and receive data. The shape of the radiating element (2) and the thickness of the core material (3) are determined by the frequency used, and in the case of reception, the electric field generated between the radiating element (2) and the ground conductor (6) is Then, connect the connector (7) and coaxial wire (
9), is amplified by an amplifier (lO), and is displayed on the display (
l1) is displayed as information.
送信の場合はこの逆である。The opposite is true for transmission.
従来の大形平涌アンテナは上記のように構成されており
， ＧＦＲＰからなるスキンＪＰＩ（４）， （５）の
熱膨張率が２５ Ｘ １０””であり，地導体（６）に
比べて大きいため、太陽光の照射等により放射素子（２
）側と地導体（６）側に温度差が生じると、放射素′ｆ
−（２）側が膨張して湾曲するなどの変形を生じ，正確
な送受信ができないという問題点があった。The conventional large-sized Hira Chung antenna is constructed as described above, and the thermal expansion coefficient of the skin JPI (4), (5) made of GFRP is 25 x 10'', which is smaller than that of the ground conductor (6). Due to its large size, the radiating element (2
) side and the ground conductor (6) side, the radiation element 'f
There was a problem that the -(2) side was expanded and deformed, such as being curved, making accurate transmission and reception impossible.
この発明は上記のような問題点を解決するためになされ
たもので，放射素子側と地導体側に温度差が生じた場合
でも湾曲等の変形を生じることなく，正確な送受信が行
える大形平面アンテナを得ることを目的とする。This invention was made in order to solve the above-mentioned problems, and it is a large-sized device that can accurately transmit and receive without causing deformation such as curving even when there is a temperature difference between the radiating element side and the ground conductor side. The purpose is to obtain a planar antenna.
この発明の大形平面アンテナは、低Ｍｆｆｉ率のコア材
の両側にスキン層を固着したサンドイッチ構造の大形平
面アンテナにおいて，コア材の放射素子側のスキン層が
アラミド繊維強化プラスチックからなり，地導体側のス
キン層が炭素繊維強化プラスチックまたはアラミド繊維
強化プラスチックからなるものであ、る．
放射素子側のスキン層には放射素子が貼付けられる。地
導体側のスキン層が炭素繊維強化プラスチックからなる
場合は、導電性を有するため、スキン層は地導体を兼ね
ることができる。地導体側のスキン層がアラミド繊維強
化プラスチックからなる場合は、銅箔等の導体からなる
地導体がスキン層に貼付けられる。The large planar antenna of the present invention has a sandwich structure in which skin layers are fixed to both sides of a core material having a low Mffi ratio.The skin layer on the radiating element side of the core material is made of aramid fiber reinforced plastic, The skin layer on the conductor side is made of carbon fiber reinforced plastic or aramid fiber reinforced plastic. A radiating element is attached to the skin layer on the radiating element side. When the skin layer on the ground conductor side is made of carbon fiber reinforced plastic, the skin layer can also serve as the ground conductor since it has conductivity. When the skin layer on the ground conductor side is made of aramid fiber reinforced plastic, a ground conductor made of a conductor such as copper foil is attached to the skin layer.
上記のように構或された大形平面アンテナにおいては、
放射素子側のコア材を送信または受信側に向けて送信お
よび受信を行う．
この場合放射素子側のスキン層を構或するアラミド繊維
強化プラスチック（以下、ＫＦＲＰという）の熱膨張率
は４Ｘ１０−’、地導体側のスキン層を形成する炭素繊
維強化プラスチック（以下，ＣＦＲＰという）の熱膨張
率は２ Ｘ １０−’といずれも小さく、零に近い熱膨
張率であるため、温度差が生じても熱変形は生じない．
〔実施例〕
以下、この発明の実施例を図について説明する。In the large planar antenna constructed as described above,
Transmit and receive by directing the core material on the radiating element side toward the transmitting or receiving side. In this case, the thermal expansion coefficient of the aramid fiber reinforced plastic (hereinafter referred to as KFRP) which forms the skin layer on the side of the radiating element is 4X10-', and the coefficient of thermal expansion of the aramid fiber reinforced plastic (hereinafter referred to as CFRP) which forms the skin layer on the ground conductor side. The thermal expansion coefficients of both are small at 2 x 10-' and close to zero, so no thermal deformation occurs even if a temperature difference occurs. [Example] Hereinafter, an example of the present invention will be described with reference to the drawings.
第２図はこの発明の一実施例による大形平面アンテナの
一部の断面図であり、図において、第■図および第３図
と同一符号は同一または相当部分を示す．この実施例で
は，放射素子（２）側のスキン層（４）はκＦＲＰから
なる．地導体側のスキン層（５）はＣＦＲＰからなり，
地導体を兼ねており，はんだ（８ｂ）によりコネクタ（
７）の外部導体（７ｂ）と接続している。他の構Ｉ戊は
第１図お−よび第３図と同様である．上記のように構成
された大形平面アンテナは、従来のものと同様に通常屋
外に設置され，送受信を行う．放射素子（２）の形状と
コア材（３）の厚さは使用周波数によって定められるた
め、受信の場合は放射素子（２）と、地導体として機能
するスキン層（５）との間に生じる電界が、特定周波数
に対してコネクタ（７）の芯線（７ａ〉および外部導体
（７ｂ）を通してコネクタ（７）および同軸線（９）に
給電され、増幅器（１０）で増幅されて表示器（１１）
に情報として表示される。送信の場合はこの逆である。FIG. 2 is a cross-sectional view of a part of a large planar antenna according to an embodiment of the present invention. In the figure, the same reference numerals as in FIGS. 2 and 3 indicate the same or corresponding parts. In this embodiment, the skin layer (4) on the side of the radiating element (2) is made of κFRP. The skin layer (5) on the ground conductor side is made of CFRP,
It also serves as a ground conductor, and is connected to the connector (
7) is connected to the external conductor (7b). Other configurations are the same as in Figures 1 and 3. The large planar antenna configured as described above is normally installed outdoors and performs transmission and reception, similar to conventional antennas. Since the shape of the radiating element (2) and the thickness of the core material (3) are determined by the frequency used, in the case of reception, the interference occurs between the radiating element (2) and the skin layer (5), which functions as a ground conductor. An electric field is fed to the connector (7) and the coaxial line (9) through the core wire (7a) and the outer conductor (7b) of the connector (7) at a specific frequency, and is amplified by the amplifier (10) and output to the display (11). )
displayed as information. The opposite is true for transmission.
この場合スキン層（４）， （５）の熱膨張率はいずれ
も小さく、従来使用されていたＧＦＲＰに比べると零に
近い熱膨張率であるため，太陽光等により表裏の温度差
が生じても湾曲等の熱変形は発生せず、正確な平面度が
保たれ、正確な送受信が可能である．
第３ ｒ５ｉ１１はこの発明の別の実施例をも示し、こ
の実施例ではスキン層（４），（５）ともにＫＦＲＰか
らなり、別部品としての地導体（６）がスキン層（５）
に貼付けられている。In this case, the thermal expansion coefficients of the skin layers (4) and (5) are both small and close to zero compared to the conventionally used GFRP, so there is a temperature difference between the front and back surfaces caused by sunlight, etc. However, thermal deformation such as curvature does not occur, accurate flatness is maintained, and accurate transmission and reception is possible. No. 3 r5i11 also shows another embodiment of the invention, in which both the skin layers (4) and (5) are made of KFRP, and the ground conductor (6) as a separate part is attached to the skin layer (5).
is pasted on.
上記の大形平面アンテナにおいては，従来のものと同様
に送受信が行われるが、スキン１！ｌ（４）． （５）
の熱膨張率は低く，地導体（６）と差がないため温度差
による熱変形は発生しない．
なお，上記の実施例ではコア材（３）としてハニカムコ
アを用いているが、発泡体等の他のコア材でもよい。In the above-mentioned large planar antenna, transmission and reception are performed in the same way as conventional antennas, but skin 1! l(4). (5)
The coefficient of thermal expansion of is low and there is no difference from that of the ground conductor (6), so no thermal deformation occurs due to the temperature difference. In addition, although a honeycomb core is used as the core material (3) in the above embodiment, other core materials such as foam may be used.
以上の通り、本発明によれば、放射素子側のスキン層を
ＫＦＲＰ製とし、地導体側のスキン層をＣＦＲＰまたは
κＦＲＰＩＯとしたため、いずれも熱膨張率が小さく、
表裏に温度差が生じても変形することがなく，アンテナ
として正確な送受信を行うことができる。As described above, according to the present invention, since the skin layer on the radiating element side is made of KFRP and the skin layer on the ground conductor side is made of CFRP or κFRPIO, both have a small coefficient of thermal expansion.
It does not deform even if there is a temperature difference between the front and back sides, and can perform accurate transmission and reception as an antenna.
第ｌ図は大形平面アンテナの斜視図，第２図はこの発明
の一実施例による大形平面アンテナの一部の断面図、第
３図は別の実施例および従来例の大形平面アンテナの一
部の断面図である。
各図中，同一符号は同一または相当部分を示し，（２）
は放射索子、（３）はコア材． （４）， （５）はス
キンＪｆｆ．（６）は地導体、（７）はコネクタである
。Fig. 1 is a perspective view of a large planar antenna, Fig. 2 is a partial sectional view of a large planar antenna according to an embodiment of the present invention, and Fig. 3 is a large planar antenna of another embodiment and a conventional example. FIG. In each figure, the same reference numerals indicate the same or equivalent parts, (2)
is a radiochord, and (3) is a core material. (4) and (5) are skin Jff. (6) is a ground conductor, and (7) is a connector.
Claims (1)
ンドイッチ構造の大形平面アンテナにおいて、コア材の
放射素子側のスキン層がアラミド繊維強化プラスチック
からなり、地導体側のスキン層が炭素繊維強化プラスチ
ックまたはアラミド繊維強化プラスチックからなること
を特徴とする大形平面アンテナ。(1) In a large planar antenna with a sandwich structure in which skin layers are fixed on both sides of a core material with a low dielectric constant, the skin layer on the radiating element side of the core material is made of aramid fiber reinforced plastic, and the skin layer on the ground conductor side is made of aramid fiber reinforced plastic. A large planar antenna characterized by being made of carbon fiber reinforced plastic or aramid fiber reinforced plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30988589A JPH03171802A (en) | 1989-11-29 | 1989-11-29 | Large-sized plane antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30988589A JPH03171802A (en) | 1989-11-29 | 1989-11-29 | Large-sized plane antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03171802A true JPH03171802A (en) | 1991-07-25 |
Family
ID=17998487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30988589A Pending JPH03171802A (en) | 1989-11-29 | 1989-11-29 | Large-sized plane antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03171802A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003115718A (en) * | 2001-07-31 | 2003-04-18 | Hitachi Maxell Ltd | Planar antenna and the manufacturing method thereof |
| US6897823B2 (en) | 2001-07-31 | 2005-05-24 | Hitachi Maxell, Ltd. | Plane antenna and method for manufacturing the same |
| JP2007524273A (en) * | 2003-06-26 | 2007-08-23 | スカイパイロット ネットワークス， インコーポレイテッド | Planar antenna for wireless mesh networks |
-
1989
- 1989-11-29 JP JP30988589A patent/JPH03171802A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003115718A (en) * | 2001-07-31 | 2003-04-18 | Hitachi Maxell Ltd | Planar antenna and the manufacturing method thereof |
| US6897823B2 (en) | 2001-07-31 | 2005-05-24 | Hitachi Maxell, Ltd. | Plane antenna and method for manufacturing the same |
| JP2007524273A (en) * | 2003-06-26 | 2007-08-23 | スカイパイロット ネットワークス， インコーポレイテッド | Planar antenna for wireless mesh networks |
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