DE2109079B2 - Dipole with an opening in a dipole arm for taking current samples - Google Patents
Dipole with an opening in a dipole arm for taking current samplesInfo
- Publication number
- DE2109079B2 DE2109079B2 DE2109079A DE2109079A DE2109079B2 DE 2109079 B2 DE2109079 B2 DE 2109079B2 DE 2109079 A DE2109079 A DE 2109079A DE 2109079 A DE2109079 A DE 2109079A DE 2109079 B2 DE2109079 B2 DE 2109079B2
- Authority
- DE
- Germany
- Prior art keywords
- dipole
- slot
- coaxial line
- arm
- impedance
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/10—Radiation diagrams of antennas
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
4. Dipol -ach Anspruch 1, dadurch gekenn- 30 ausdehnung senkrecht zum Stromfluß im Dipol liegt, zeichnet, daß die Impedanz des Schlitzes mittels so wie es in Fig. 1 gezeichnet ist. Diese Art der Aneines in einer um eine Streck- (J) kleineren Ent- kopplung hat auf die Stromverteilung im Dipol ein;.· fernung als die Hälfte der Betriebswellenlänge vernachlässigbare Wirkung.4. Dipole -according to claim 1, characterized marked- 30 extension is perpendicular to the current flow in the dipole, shows that the impedance of the slot means as shown in FIG. That kind of Aneines in a decoupling that is one stretch (J) smaller, the current distribution in the dipole has a;. · distance than half the operating wavelength negligible effect.
vom Schlitz angeschlossenen Serienwiderstands Der Schlitz stellt einen Generator niedrigen Wider-series resistor connected by the slot The slot provides a generator with low resistance
an den Wellenwiderstand (Z0) der Koaxial- 35 stands dar, der leicht induktiv ist. Er kann an die leitung (5) angepaßt ist und daß die Strecke (J) Übertragungsleitung mit dem Wellenwiderstand Z11 so bemessen ist, daß die induktive Komponente mittels eines Widerstandes R = Z0 angepaßt werden der Schlitzimpedanz kompensiert ist (F i g. 2c). (F i g. 2 a bis 2 c).at the wave resistance (Z 0 ) represents the coaxial stand, which is slightly inductive. It can be matched to the line (5) and that the line (J) transmission line with the characteristic impedance Z 11 is dimensioned so that the inductive component can be adapted to the slot impedance by means of a resistor R = Z 0 (FIG. 2c ). (Fig. 2 a to 2 c).
Gemäß Fig. 2a liegt der WiderstandR in Serie 40 mit dem Schlitz. Hierbei erreicht man die größteAs shown in Fig. 2a, resistor R is in series 40 with the slot. Here you reach the largest
Bandbreite, aber eine Kompensation der induktivenBandwidth, but a compensation of the inductive
Komponente des Schlitzes ist nicht möglich, so daß die Anpassung nicht genau ist.Component of the slot is not possible, so the match is not accurate.
Die Erfindung betrifft einen Dipol mit rundem Bei der zweiten, in Fig. 2b dargestellten Möglich-The invention relates to a dipole with a round In the second, shown in Fig. 2b possible
Querschnitt, mit einer öffnung in einem Dipolarm 45 keit liegt der Widerstand R parallel zum Schlitz in
Und mit einer in diesem Dipolarm geführten Koaxial- einer Entfernung (;./4 — ,J) vom Schlitz. Die Länge J
leitung, die mit einer am Ort der öffnung befindlichen kann zur Kompensation der induktiven Komponente
Einrichtung zur Entnahme von Stromproben ver- des Schlitzes ausgenutzt werden,
bunden ist. Da der Schlitz eine Quelle mit niedrigem Innen-Cross-section, with an opening in a dipole arm 45, the resistance R lies parallel to the slot at a distance (; ./4 -, J) from the slot with a coaxial line in this dipole arm. The length J of the line, which can be used with a device located at the location of the opening to compensate for the inductive component, for taking current samples from the slot,
is bound. Since the slot is a source of low internal
Ein derartiger Dipol ist in der Literaturstelle: 50 widerstand ist, ist die Kopplung des Schlitzes mit dem NTG-U.R.S.I.-Tagung »Antennen und elektromagne- Dipol relativ unempfindlich gegen äußere Einflüsse, tische Felder«, Darmstadt, 17. bis 20. Oktober 1967, beispielsweise gegen Wasser in der Nähe des Schlitzes. Kurzfassung der Vorträge der VDE Arbeitsgemein- Bei der dritten, in Fig. 2c dargestellten Möglich-One such dipole is in the reference: 50 is the coupling of the slot with the NTG-U.R.S.I. conference »Antennas and electromagnetic dipole relatively insensitive to external influences, tische Felder ", Darmstadt, October 17-20, 1967, for example against water near the slot. Short version of the lectures of the VDE Arbeitsgemein- In the third option shown in Fig. 2c-
ichaft 1967, des VDE-Bezirksvereins Frankfurt/Main. keit liegt der Widerstand R in Serie mit dem Schlitz E. 35 bis 37, in Bild 1 — Meinke — dargestellt. 55 in einer Entfernung (//2 — J) vom Schlitz. Die Bei diesem Dipol verläuft eine Koaxialleitung im Länge J kann wiederum zur Kompensation der intlohr, deren Innenleiter durch eine öffnung des Di- duktiven Komponente des Schlitzes ausgenutzt pols ragt und eine entweder als Stift oder Schleife werden.ichaft 1967, of the VDE district association Frankfurt / Main. Resistance R is in series with slot E. 35 to 37, shown in Figure 1 - Meinke. 55 at a distance (// 2 - J) from the slot. With this dipole, a coaxial line with a length J can in turn be used to compensate for the inner ear, the inner conductor of which protrudes through an opening in the dielectric component of the slot and which can be either a pin or a loop.
ausgebildete Messonde bildet. Mit den beschriebenen Anordnungen läßt sichtrained measuring probe forms. With the arrangements described can
Es ist die Aufgabe der Erfindung, einen Dipol mit 60 Amplitude und Phase des Stroms im Dipol messen.It is the object of the invention to measure a dipole with an amplitude and phase of the current in the dipole.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB967370 | 1970-02-27 |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2109079A1 DE2109079A1 (en) | 1971-09-02 |
DE2109079B2 true DE2109079B2 (en) | 1974-08-29 |
DE2109079C3 DE2109079C3 (en) | 1975-05-15 |
Family
ID=9876551
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2109079A Expired DE2109079C3 (en) | 1970-02-27 | 1971-02-25 | Dipole with an opening in a dipole arm for taking current samples |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2109079C3 (en) |
FR (1) | FR2085599B1 (en) |
GB (1) | GB1325771A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4129604A1 (en) * | 1991-09-06 | 1993-03-11 | Abb Patent Gmbh | Method of determining radiation diagram of short-wave curtain antenna - measuring relative currents in dipole gap feeder lines, correlation current and impedance values for same positions to determine field strength values |
-
1970
- 1970-02-27 GB GB967370A patent/GB1325771A/en not_active Expired
-
1971
- 1971-02-25 DE DE2109079A patent/DE2109079C3/en not_active Expired
- 1971-03-01 FR FR7106923A patent/FR2085599B1/fr not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4129604A1 (en) * | 1991-09-06 | 1993-03-11 | Abb Patent Gmbh | Method of determining radiation diagram of short-wave curtain antenna - measuring relative currents in dipole gap feeder lines, correlation current and impedance values for same positions to determine field strength values |
DE4129604C2 (en) * | 1991-09-06 | 2000-03-16 | Thomcast Gmbh Sendeanlagen Fue | Method for determining the radiation pattern of a short-wave curtain antenna |
Also Published As
Publication number | Publication date |
---|---|
FR2085599A1 (en) | 1971-12-24 |
FR2085599B1 (en) | 1976-02-06 |
GB1325771A (en) | 1973-08-08 |
DE2109079A1 (en) | 1971-09-02 |
DE2109079C3 (en) | 1975-05-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C3 | Grant after two publication steps (3rd publication) | ||
E77 | Valid patent as to the heymanns-index 1977 | ||
8339 | Ceased/non-payment of the annual fee |