JPH0284412U

JPH0284412U -

Info

Publication number: JPH0284412U
Application number: JP16333388U
Authority: JP
Priority date: 1988-12-15
Filing date: 1988-12-15
Publication date: 1990-06-29
Anticipated expiration: 2003-12-15
Also published as: JPH0731613Y2

Description

[Brief explanation of drawings]

第１図は、レドームを縦に切り欠いた本考案の
円錐台状の２線式コニカルヘリツクスアンテナの
側面図であり、第２図は、レドームの切り欠かれ
ていない状態の第１図のＡ−Ａ矢視断面図であり
、第３図は、同じくＢ−Ｂ矢視断面図であり、第
４図は、同じくＣ−Ｃ矢視断面図であり、第５図
は、第２の実施例の一体成形されたアンテナ基台
とポールおよびアーム支持部材の外観斜視図であ
り、第６図は、第３の実施例の軸方向で２分割さ
れてそれぞれ一体成形されたアンテナ基台とポー
ルおよびアーム支持部材の外観斜視図であり、第
７図は、第４の実施例のポールの先端部分斜視図
であり、第８図は、第７図のポール先端部分の組
み付け縦断面図であり、第９図は、レドームを縦
に切り欠いた本発明の円錐台状の２線式コニカル
ヘリツクスアンテナの第５の実施例の側面図であ
り、第１０図は、レムードの切り欠かれていない
状態の第９図のＤ−Ｄ矢視断面図であり、第１１
図は、第６の実施例のアンテナアームとセミリジ
ツトケーブル等がインサート成形によりアンテナ
基台とポールおよびアーム支持部材に一体成形さ
れた外観斜視図であり、第１２図は、第７の実施
例のアンテナアーム等をインサート成型で発泡成
形部材に埋め込んだ構造の縦断面図であり、第１
３図は、第８の実施例のバランの微調整を行なう
構造の要部外観斜視図であり、第１４図は、第９
の実施例のセミリジツトケーブルの金属筒を用い
てアンテナアームの端をカシメで固定する要部外
観斜視図であり、第１５図は、第１０の実施例の
アンテナアームの円錐台底部側の端部を固定する
要部外観斜視図であり、第１６図は、第１１の実
施例のポールの先端部をレドームで支持する要部
縦断面図である。１，１′……アンテナ基台、２，２′，２０…
…ポール、３，３′，４，４′……アーム支持部
材、５……セミリジツトケーブル、５ａ，２５…
…中心導線、５ｂ……金属筒、７……アンテナア
ーム、８……レドーム、８ａ……係合突起、２１
……金属メツキ、２２……アーム取付部、２３…
…溝、２４，６１……バラン、３０……アーム巻
回部材、４０……発泡成型部材、５０……スリツ
ト、５１……半田付け、６０……分割片、７０…
…円弧状部、８０……筒状突起。 Fig. 1 is a side view of the truncated cone-shaped two-wire conical helix antenna of the present invention with the radome cut out vertically, and Fig. 2 is a side view of Fig. 1 with the radome not cut out. 3 is a cross-sectional view taken along the line B-B, FIG. 4 is a cross-sectional view taken along the line C-C, and FIG. 5 is a cross-sectional view taken along the line C-C. FIG. 6 is an external perspective view of an antenna base and a pole and arm support member that are integrally molded according to the third embodiment; FIG. FIG. 7 is a perspective view of the pole and the arm support member; FIG. 7 is a perspective view of the tip of the pole of the fourth embodiment; and FIG. 8 is a vertical cross-sectional view of the pole of FIG. 9 is a side view of the fifth embodiment of the truncated cone-shaped two-wire conical helix antenna of the present invention in which the radome is cut out vertically, and FIG. 11 is a sectional view taken along line D-D in FIG.
The figure is an external perspective view of the antenna arm, semi-rigid cable, etc. of the sixth embodiment integrally molded with the antenna base, pole, and arm support member by insert molding. It is a vertical cross-sectional view of a structure in which the antenna arm etc. of the example are embedded in a foam molded member by insert molding, and the first
FIG. 3 is an external perspective view of the main part of the structure for finely adjusting the balun of the eighth embodiment, and FIG.
FIG. 15 is a perspective view of the main part of the antenna arm of the tenth embodiment in which the end of the antenna arm is fixed by caulking using the metal tube of the semi-rigid cable, and FIG. FIG. 16 is a perspective view of the appearance of the main part for fixing the end part, and FIG. 16 is a vertical cross-sectional view of the main part in which the tip of the pole of the eleventh embodiment is supported by the radome. 1, 1'...Antenna base, 2, 2', 20...
...Pole, 3, 3', 4, 4'...Arm support member, 5...Semi-rigid cable, 5a, 25...
...Center conductor, 5b...Metal cylinder, 7...Antenna arm, 8...Radome, 8a...Engaging protrusion, 21
...Metal plating, 22...Arm mounting part, 23...
... Groove, 24, 61 ... Balun, 30 ... Arm winding member, 40 ... Foam molding member, 50 ... Slit, 51 ... Soldering, 60 ... Divided piece, 70 ...
...Arc-shaped part, 80...Cylindrical projection.

Claims

[Claims for Utility Model Registration] (1) An arm support member is provided at the tip and middle part of a cylindrical pole erected on an antenna base,
Insert the semi-rigid cable into this pole,
The end is connected to the tip of this semi-rigid cable, and the two antenna arms are fixedly supported by the arm support member and wound in an equiangular spiral in the shape of a truncated cone, and the other ends of these antenna arms are connected to the A radome in the form of a truncated conical cap is fixed to the antenna base and further covers these antenna arms, and is configured such that the radome supports the tip of the pole. A 2-wire conical helix antenna shaped like a truncated cone. (2) The truncated cone-shaped two-wire conical helix antenna according to claim 1, wherein the antenna base, the pole, and the arm support member are integrally molded from a resin with a low dielectric constant. A truncated conical two-wire conical helix antenna. (3) In the truncated conical two-wire conical helix antenna according to claim 1, the antenna base, the pole, and the arm support member are divided into two in the axial direction of the pole, and are made of resin with a low dielectric constant. A truncated cone-shaped two-wire conical helix antenna characterized by being constructed by integrally molding each part. (4) In the truncated conical two-wire conical helix antenna according to claim 1, the antenna arm and the semi-rigid cable are integrally molded with the antenna base, the pole, and the arm support member by insert molding. A two-wire conical helix antenna in the shape of a truncated cone. (5) In the truncated cone-shaped two-wire conical helix antenna according to claim 1, the intervals between the arm support members disposed on the pole are arranged closer as the diameter of the truncated cone increases. A truncated cone-shaped two-wire conical helix antenna. (6) In the truncated cone-shaped two-wire conical helix antenna according to claim 1, the arm support member provided at the tip of the pole is fitted into the inner side of the truncated conical top of the radome. A truncated cone-shaped two-wire conical helix antenna characterized by being configured by providing a section. (7) In the truncated cone-shaped two-wire conical helix antenna according to claim 1, instead of the semi-rigid cable, the inner peripheral wall of the pole is plated with metal, and the center conductor inside the pole is made of an insulating material. A two-wire conical helix antenna in the shape of a truncated cone, characterized in that it is constructed by inserting a wire into the antenna. (8) In the truncated cone-shaped two-wire conical helix antenna according to claim 7, the tip of the pole is provided protruding on both sides perpendicular to the axial direction, and grooves are provided in the protruding direction, and furthermore, these grooves are provided with grooves in the protruding direction. metal plating electrically connected to the metal plating on the inner circumferential wall of the pole to form an arm attachment part, and the end of the antenna arm is soldered to the metal plating of the arm attachment part. A 2-wire conical helix antenna with a truncated cone shape. (9) Arrange a truncated conical cage-shaped arm winding member on the antenna base, arrange a semi-rigid cable at the axis of this arm winding member, and attach an end to the tip of this semi-rigid cable. and fixedly supported by the arm winding member, and winding the two antenna arms in a truncated conical shape in an equiangular spiral, and fixing the other ends of these antenna arms to the antenna base;
Furthermore, a radome in the shape of a truncated cone cap covering these antenna arms is fixed to the antenna base, and the radome is configured to support the tip of the arm winding member. 2-wire conical helix antenna. (10) The tips of two antenna arms wound equiangularly into a truncated cone shape are connected to the tips of a semi-rigid cable, and these connections are fixed by insert molding of foamed resin. A 2-wire conical helix antenna with a truncated cone shape. (11) In the truncated cone-shaped two-wire conical helix antenna according to any one of claims 1, 9, or 10, a slit is provided at the distal end of the metal tube of the semi-rigid cable to be longer in the axial direction; The length of the balun can be adjusted to 1/4 wavelength of the transmitted or received signal by soldering the bottom of the slit. A two-wire conical helix shaped like a truncated cone. (12) In the truncated cone-shaped two-wire conical helix antenna according to claim 1, the tip of the metal tube of the semi-rigid cable is divided into two parts in the axial direction, and truncated conical shape, characterized in that it is bent in a direction, and one split piece fixes the end of one antenna arm by caulking, and the other split piece fixes the end of the other antenna arm by caulking. 2-wire conical helix antenna. (13) In the truncated conical two-wire conical helix antenna according to any one of claims 1, 9, or 10, the end of the antenna arm on the bottom side of the truncated cone is semicircularly connected to the pole or the insulating material. A truncated cone-shaped two-wire conical helix antenna characterized by being configured to be fixed to a rigid cable.