DE720891C - Antenna arrangement for generating radiation for the implementation of aircraft blind landings - Google Patents
Antenna arrangement for generating radiation for the implementation of aircraft blind landingsInfo
- Publication number
- DE720891C DE720891C DEL96140D DEL0096140D DE720891C DE 720891 C DE720891 C DE 720891C DE L96140 D DEL96140 D DE L96140D DE L0096140 D DEL0096140 D DE L0096140D DE 720891 C DE720891 C DE 720891C
- Authority
- DE
- Germany
- Prior art keywords
- antenna arrangement
- implementation
- radiation
- generating radiation
- wavelength
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Description
Antennenanordnung zur Erzeugung einer Strahlung für die Durchführung von Flugzeug-Blindlandungen Das Hauptpatent befaßt sich im besonderen mit der Ausbildung einer mittels sehr kurzer Wellen erzeugten Raumstrahlung, welche zur Festlegung einer Führungsbahn für Flugzeuglandezwecke dient. Gemäß den Merkmalen des Hauptpatents soll der Horizontalschnitt durch das Diagramm der Raumstrahlung in der Landerichtung eine Einsattelung aufweisen, also eine charakteristische Form besitzen, damit die schräg zur Symmetrieebene dieses Diagramms verlaufende Anflugleitebene dasselbe längs gerader Linien konstanter Feldstärke schneidet. Zur Erzeugung der räumlichen Strahlung sieht das Hauptpatent eine Antennenanordnung vor, welche aus zwei gegenphasig gespeisten Einzelantennen, die in einem Abstand von etwa 3,87.? bz«-. i,95 A, angeordnet sind, besteht.Antenna arrangement for generating radiation for the implementation of airplane blind landings The main patent deals in particular with training a spatial radiation generated by means of very short waves, which defines serves as a guideway for aircraft landing purposes. According to the features of the main patent shall be the horizontal section through the diagram of space radiation in the landing direction have a saddle, so have a characteristic shape so that the The approach control plane running obliquely to the plane of symmetry of this diagram is the same intersects along straight lines of constant field strength. To generate the spatial Radiation, the main patent provides an antenna arrangement, which consists of two antiphase fed individual antennas at a distance of about 3.87.? bz «-. i, 95 A. are, exists.
Diese Antennenanordnung hat die Eigenschaft, daß das gewünschte Raumdiagramm spiegelbildlich erzeugt wird, d.h. daß eine Strahlung in zwei entgegengesetzten Richtungen auftritt. Da es jedoch vielfach erwünscht ist, nur eine einzige Landerichtung festzulegen, wird gemäß der Erfindung eine diesen Erfordernissen gerecht werdende Antennenanlage vorgeschlagen, die außerdem den Vorteil mit sich bringt, daß sich einfache Speisungsverhältnisse ergeben.This antenna arrangement has the property that the desired spatial diagram is generated in mirror image, i.e. that a radiation in two opposite Directions occurs. However, since it is often desired, only one landing direction determine, according to the invention, one that meets these requirements Antenna system proposed, which also has the advantage that simple feed ratios result.
Erfindungsgemäß dient zur Erzeugung des Raumdiagramms eine Antennenanordnung, die aus zwei in einem gegenseitigen Abstand von einer Wellenlänge aufgestellten, mit Strömen verschiedener Größe gegenphasig gespeisten Dipolen besteht, denen je ein Reflektor im Abstand von l,/, Wellenlänge zugeordnet ist.According to the invention, an antenna arrangement is used to generate the spatial diagram, those made up of two set up at a mutual distance of one wavelength, Dipoles fed in phase opposition with currents of different sizes exist, each of which a reflector at a distance of 1, /, wavelength is assigned.
Die Erfindung ergibt sich im einzelnen aus den Abbildungen.The invention results in detail from the figures.
Zwei Dipole Dl und D. (Abb. i), deren gegenseitiger Abstand eine Wellenlänge: beträgt, werden vom Sender gegenphasig erregt. Die Antennenströme in den Dipolen sind nicht gleich, sondern stehen beispielsweise in einem Verhältnis i :3. Durch Einstellung des Stromverhältnisses in Dl und D. läßt sich die Tiefe der Einsattlung des horizontalen Strahlungsdiagramms verändern, um die Anordnung den jeweils gewünschten Landeverhältnissen anzupassen. Im Abstand von 1/4 Wellenlänge hinter den Dipolen Dl und D. ist noch je ein strahlungsgekoppelter Reflektor R1 und R2 angebracht, um die Strahlung in der gewünschten Richtung zu verstärken. Ein Beispiel eines auf diese Weise erzeugten Strahlungsdiagrammes zeigt Abb. 2.Two dipoles Dl and D. (Fig. I), whose mutual distance is one wavelength:, are excited in antiphase by the transmitter. The antenna currents in the dipoles are not the same, but have a ratio of i : 3, for example. By setting the current ratio in Dl and D, the depth of the dip in the horizontal radiation diagram can be changed in order to adapt the arrangement to the respectively desired landing conditions. At a distance of 1/4 wavelength behind the dipoles Dl and D. a radiation-coupled reflector R1 and R2 is attached to amplify the radiation in the desired direction. An example of a radiation pattern generated in this way is shown in Fig. 2.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL96140D DE720891C (en) | 1938-11-09 | 1938-11-10 | Antenna arrangement for generating radiation for the implementation of aircraft blind landings |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE231658X | 1938-11-09 | ||
DEL96140D DE720891C (en) | 1938-11-09 | 1938-11-10 | Antenna arrangement for generating radiation for the implementation of aircraft blind landings |
CH228970T | 1939-09-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE720891C true DE720891C (en) | 1942-05-18 |
Family
ID=27177957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL96140D Expired DE720891C (en) | 1938-11-09 | 1938-11-10 | Antenna arrangement for generating radiation for the implementation of aircraft blind landings |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE720891C (en) |
-
1938
- 1938-11-10 DE DEL96140D patent/DE720891C/en not_active Expired
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