DE731700C - Device for the detection of an electromagnetic, ultrashort wave reflecting object - Google Patents
Device for the detection of an electromagnetic, ultrashort wave reflecting objectInfo
- Publication number
- DE731700C DE731700C DET45206D DET0045206D DE731700C DE 731700 C DE731700 C DE 731700C DE T45206 D DET45206 D DE T45206D DE T0045206 D DET0045206 D DE T0045206D DE 731700 C DE731700 C DE 731700C
- Authority
- DE
- Germany
- Prior art keywords
- electromagnetic
- reflecting object
- detection
- bundling
- wave reflecting
- 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
- 238000001514 detection method Methods 0.000 title description 2
- 230000005855 radiation Effects 0.000 claims description 6
- 241000191291 Abies alba Species 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 230000010287 polarization Effects 0.000 description 2
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/001—Crossed polarisation dual antennas
Landscapes
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Description
Gerät zur Ermittlung eines elektromagnetische, ultrakurze Wellen reflektierenden Gegenstandes Vorliegende Erfindung bezweckt die Ausführung eines Gerätes zur Ermittlung eines elektromagnetische, ultrakurze Wellen refllektierenden Gegenstandes, bestehend aus nebeneinander angeordnetem Sender und Empfänger, bei dem erfindungsgemäß die vor einem gen ieinsamen Reflektor oder vor mechanisch vereinigten Reflektoren angeordneten Sende-und Empfangsanteninen derart .ausgebildet sind, daß sie nur senkrecht zueinander polarisierte Strahlung bzw. Strahlungskomponenten senden bzw. empfangen.Device for detecting electromagnetic, ultrashort waves reflecting The object of the present invention is to provide a device for detection an electromagnetic ultrashort wave reflecting object, consisting of from side by side arranged transmitter and receiver, in which according to the invention the arranged in front of a genieinsamen reflector or in front of mechanically combined reflectors Transmitting and receiving antennas are designed in such a way that they are only perpendicular to one another send or receive polarized radiation or radiation components.
Es ist bekannt, im Gegensprechverkehr den einzelnen Sprechrichtungen zwecks gegenseitiger Entkopplung unterschiedliche Strahlungspolarisationen zuzuordnen und hierzu vor einem gemeinsamen Reflektor angeordnete, senkrecht aufeinanderstehende Sende- und Empfangsantennen für ultrakurze Wellen vorzusehen. Eine ähnliche Entkopplungsmaßnahme ist auch bei Messung des Abstandes eines Sendeempfangsgerätes von einer Relaisstation gebräuchlich.It is known, in two-way communication, the individual speech directions assign different radiation polarizations for the purpose of mutual decoupling and for this purpose arranged in front of a common reflector and standing perpendicular to one another Provide transmitting and receiving antennas for ultrashort waves. A similar decoupling measure is also used when measuring the distance between a transceiver and a relay station common.
Die Erfindung nutzt die Erfahrungstatsache aus, daß die Polaiis.ationsebene einer eindeutig polarisierten Strahlung bei Reflexion an nicht vollkommen ebenen Flächen irgendwie -c- - dreht wird, so daß z. B. -ein nach Abb. i vom SendedipolS ausgehender Strahl bei Rückkehr vom Reflexionspunkt R nicht mehr in seinerAusgangspolarisation ankommt, sondern um irgendeinen Winkel cp verdreht. Bringt man also einen in Abb. i nicht dargestellten Empfangsdipol senkrecht zu S an, so wird dieser zwar vom Sender S direkt nichts empfangen, wohl aber ein gewisses Quantum von dem in seiner Polarisationsebene verdrehten Rückstrahl.The invention uses the fact of experience that the Polaiis.ationsebene a clearly polarized radiation when reflected on not perfectly flat surfaces somehow -c- - rotates, so that z. B. -a beam emanating from the transmitting dipole S as shown in Fig. If a receiving dipole, not shown in Fig. I, is attached perpendicular to S, it will not receive anything directly from the transmitter S, but a certain amount of the return beam, which is twisted in its plane of polarization.
In den Abb.2 bis 4 sind einige Beispiele der praktischen Ausführung gezeigt. In Abb. steht senkrecht auf dem Sendedipol S der Empfangsdipol F. Der Schnittpunkt beider liegt im Brennpunkt des Parabolspiegels P. Diese an sich für Zwecke des Gegensprechverkehrs bekannte Anordnung kommt insbesondere für sehr kurze Wellen in Frage.In Figs. 2 to 4 are some examples of the practical implementation shown. In the figure, the receiving dipole F is perpendicular to the transmitting dipole S. The point of intersection both lies in the focal point of the parabolic mirror P. This per se for purposes of two-way communication known arrangement is particularly suitable for very short waves.
In Abb. 3 stehen die Dipolzeilen SS und EEEE aufeinander senkrecht und gleichzeitig in den Brennlinien des Doppelparabolspiegels DP.In Fig. 3 the dipole lines SS and EEEE are perpendicular to each other and at the same time in the focal lines of the double parabolic mirror DP.
Abb.4 zeigt schließlich eine Antennenanordnung nach Art der bekannten Tannenbau.mantenne vor dem Reflektor F, bei der auf je einem Sendedipol S ein Empfangsdipol E senkrecht steht.Finally, Fig.4 shows an antenna arrangement of the type known Tannenbau.mantenne in front of the reflector F, with a receiving dipole on each of a transmitting dipole S. E is vertical.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET45206D DE731700C (en) | 1935-04-17 | 1935-04-18 | Device for the detection of an electromagnetic, ultrashort wave reflecting object |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE804966X | 1935-04-17 | ||
| DET45206D DE731700C (en) | 1935-04-17 | 1935-04-18 | Device for the detection of an electromagnetic, ultrashort wave reflecting object |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE731700C true DE731700C (en) | 1943-02-13 |
Family
ID=25948797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DET45206D Expired DE731700C (en) | 1935-04-17 | 1935-04-18 | Device for the detection of an electromagnetic, ultrashort wave reflecting object |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE731700C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE950862C (en) * | 1952-03-30 | 1956-10-18 | Siemens Ag | An arrangement consisting of transmitting and receiving antennas connected to a wave amplifier |
| DE1001735B (en) * | 1953-02-06 | 1957-01-31 | Marconi Wireless Telegraph Co | Fork arrangement for very short electromagnetic waves |
-
1935
- 1935-04-18 DE DET45206D patent/DE731700C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE950862C (en) * | 1952-03-30 | 1956-10-18 | Siemens Ag | An arrangement consisting of transmitting and receiving antennas connected to a wave amplifier |
| DE1001735B (en) * | 1953-02-06 | 1957-01-31 | Marconi Wireless Telegraph Co | Fork arrangement for very short electromagnetic waves |
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