DE202004011858U1 - Directional antenna has a symmetrical dipole form and has entry point for the connection of coaxial cable with same impedance as base. - Google Patents

Directional antenna has a symmetrical dipole form and has entry point for the connection of coaxial cable with same impedance as base. Download PDF

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Publication number
DE202004011858U1
DE202004011858U1 DE200420011858 DE202004011858U DE202004011858U1 DE 202004011858 U1 DE202004011858 U1 DE 202004011858U1 DE 200420011858 DE200420011858 DE 200420011858 DE 202004011858 U DE202004011858 U DE 202004011858U DE 202004011858 U1 DE202004011858 U1 DE 202004011858U1
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DE
Germany
Prior art keywords
coaxial cable
connection
base
tube
entry point
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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
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DE200420011858
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German (de)
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Individual
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Individual
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Priority to DE200420011858 priority Critical patent/DE202004011858U1/en
Publication of DE202004011858U1 publication Critical patent/DE202004011858U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength

Abstract

The coaxial cable is introduced (10) into the center of the tube of the loop dipole and is fed to the lower center point. A connection is made between the two ends of the tube (2,3). The base impedance of the antenna is the same as that of the coaxial cable.

Description

Richtantennen üblicher Bauart z.B. Yagi Antennen mit einem symmetrischen gestreckten Dipol, oder mit einem symmetrischen Schleifendipol benötigen immer aufwendige Mittel für den Anschluss der koaxialen Speiseleitung. Die Speiseleitungen werden an den Antennen über Symmetriewandler und Anpassungsglieder angeschlossen. Diese Mittel verursachen zusätzliche Dämpfung am Anschluß der Antenne und bei schlechter Dimensionierung auch Mantelwellen auf der Speiseleitung.Directional antennas more common Type e.g. Yagi antennas with a symmetrical stretched dipole, or with a symmetrical loop dipole always require expensive means for the Connection of the coaxial feed line. The feed lines are on the antennas Symmetry converter and matching elements connected. This means cause additional damping at the connection of the Antenna and, if the dimensions are poor, also sheathed waves the feed line.

Diese Probleme werden mit den im Schutzanspruch 1 und 2 aufgeführten Merkmalen gelöst.This Problems are with the features listed in protection claims 1 and 2 solved.

Mit der Erfindung wird erreicht, dass die Speiseleitung direkt am Schleifendipol der Antenne Verlust frei, ohne Störung der Symmetrie und ohne die Entstehung der Mantelwellen angeschlossen werden kann.With The invention achieves that the feed line directly on the loop dipole the antenna loss free, without disturbing the symmetry and without the Emergence of the jacket waves can be connected.

Ausführungsbeispiele der Erfindung werden anhand der 1 bis 2 erläutert. Es zeigen:Embodiments of the invention are based on the 1 to 2 explained. Show it:

1 Ausführung mit komplett durchgeführter koaxialen Leitung. 1 Version with completely implemented coaxial cable.

2 Ausführung mit durchgeführtem Innenleiter der koaxialen Leitung. 2 Version with the inner conductor of the coaxial cable.

Claims (2)

Speisung von Richtantennen mit einem Schleifendipol, dessen Fußpunktwiderstand gleich der Impedanz der benutzten koaxialen Leitung ist. dadurch gekennzeichnet, dass die koaxiale Speiseleitung über die Öffnung (1) in der Mitte des Rohres des Schleifendipols eingeführt ist und bis zu den Anschlüssen am Fußpunkt des Dipols durchgeführt ist, dabei ist der Außenleiter an dem Ende (2) des Rohres und Innenleiter am gegenüber liegendem Ende (3) elektrisch kontaktiert.Feeding of directional antennas with a loop dipole whose base resistance is equal to the impedance of the coaxial cable used. characterized in that the coaxial feed line via the opening ( 1 ) is inserted in the middle of the tube of the loop dipole and is made up to the connections at the base of the dipole, with the outer conductor at the end ( 2 ) of the tube and inner conductor at the opposite end ( 3 ) electrically contacted. Speisung von Richtantennen nach einem vorhergehenden Ansprüche dadurch gekennzeichnet, dass in dem Fall, wenn der Innendurchmesser des Rohres und des Außenleiters der koaxialen Speiseleitung gleich sind, ist nur der Innenleiter der Leitung mit seiner Isolation durch die Öffnung (1) in der Mitte des Rohres des Schleifendipols bis zum Ende (3) durchgeführt und elektrisch kontaktiert, Außenleiter der Leitung ist direkt an der Öffnung (1) elektrisch mit dem Nullpunkt des Dipols kontaktiert.Feeding of directional antennas according to one of the preceding claims, characterized in that in the case when the inner diameter of the tube and the outer conductor of the coaxial feed line are the same, only the inner conductor of the line with its insulation through the opening ( 1 ) in the middle of the tube of the loop dipole to the end ( 3 ) and electrically contacted, the outer conductor of the cable is directly at the opening ( 1 ) electrically contacted with the zero point of the dipole.
DE200420011858 2004-07-28 2004-07-28 Directional antenna has a symmetrical dipole form and has entry point for the connection of coaxial cable with same impedance as base. Expired - Lifetime DE202004011858U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200420011858 DE202004011858U1 (en) 2004-07-28 2004-07-28 Directional antenna has a symmetrical dipole form and has entry point for the connection of coaxial cable with same impedance as base.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200420011858 DE202004011858U1 (en) 2004-07-28 2004-07-28 Directional antenna has a symmetrical dipole form and has entry point for the connection of coaxial cable with same impedance as base.

Publications (1)

Publication Number Publication Date
DE202004011858U1 true DE202004011858U1 (en) 2004-10-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE200420011858 Expired - Lifetime DE202004011858U1 (en) 2004-07-28 2004-07-28 Directional antenna has a symmetrical dipole form and has entry point for the connection of coaxial cable with same impedance as base.

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DE (1) DE202004011858U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2226898A1 (en) * 2009-03-04 2010-09-08 PC-Tel, Inc. Circuit board folded dipole with integral balun and transformer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2226898A1 (en) * 2009-03-04 2010-09-08 PC-Tel, Inc. Circuit board folded dipole with integral balun and transformer

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Legal Events

Date Code Title Description
R086 Non-binding declaration of licensing interest
R207 Utility model specification

Effective date: 20041111

R156 Lapse of ip right after 3 years

Effective date: 20080201