DE440578C - Arrangement for scanning the antenna current in wireless telegraphy - Google Patents
Arrangement for scanning the antenna current in wireless telegraphyInfo
- Publication number
- DE440578C DE440578C DET29446D DET0029446D DE440578C DE 440578 C DE440578 C DE 440578C DE T29446 D DET29446 D DE T29446D DE T0029446 D DET0029446 D DE T0029446D DE 440578 C DE440578 C DE 440578C
- Authority
- DE
- Germany
- Prior art keywords
- antenna
- resistance
- arrangement
- arrangement according
- circuit
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
- H04L27/04—Modulator circuits; Transmitter circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
Description
Bekanntlich treten beim Tasten Belastungsschwankungen des Hochfrequenzgenerators auf, wodurch eine Inkonstanz der Frequenz eintritt. Die vorliegende Erfindung gibt ein Verfahren an, um die Belastungsschwankungen beim Tasten des Antennenstromes zu kompensieren. Der Grundgedanke der Erfindung besteht darin, daß in den Kreis, der an die Antenne angeschlossen ist und über den die Energie vom Hochfrequenzgenerator auf die Antenne übertragen wird, ein Widerstand eingeschaltet werden muß, der so bemessen ist, daß der Widerstand dieses Übertragerkreises bei getasteter Antenne gleich ist dem Widerstände bei angeschlossener Antenne. Unter Widerstand ist hierbei natürlich der gesamte Widerstand, d. h. nicht nur der Ohmsche Widerstand, sondern auch der Wechselstromwiderstand (scheinbare. Widerstand) zu verstehen. _It is well known that there are fluctuations in load when touching of the high-frequency generator, whereby an inconsistency of the frequency occurs. The present invention enters Procedure to compensate for the load fluctuations when scanning the antenna current. The basic idea of the invention consists in that in the circuit that is connected to the antenna and through which the energy from the high-frequency generator is transmitted to the antenna, a resistor must be switched on, which is so dimensioned is that the resistance of this transmitter circuit when the antenna is keyed is the same as the resistance when the antenna is connected. In this case, of course, the resistance is the entire resistance, i. H. not only the ohmic resistance, but also the AC resistance (apparent. Resistance) to understand. _
Eine Ausführungsform der Erfindung ist auf der Abbildung angegeben. Die Antenne A wird durch einen Hochfrequenzgenerator G mit einem Frequenztransformator über einen Zwischenkreis S gespeist. Das Tasten der Antenne erfolgt dadurch, daß ein Teil der Windungen der Induktivität, durch welche die Antenne mit dem Zwischenkreis gekoppelt ist, durch die Taste T kurzgeschlossen wird. Erfindungsgemäß wird nun gleich-An embodiment of the invention is shown in the figure. The antenna A is fed by a high-frequency generator G with a frequency transformer via an intermediate circuit S. The antenna is keyed in that part of the windings of the inductance, through which the antenna is coupled to the intermediate circuit, is short-circuited with the T key. According to the invention is now the same
~*) Von dem Patentsucher ist als der Erfinder angegeben worden:~ *) The patent seeker stated as the inventor:
Mendel Osnos in Berlin.Mendel Osnos in Berlin.
zeitig mit dem Schließen der Taste in der Antenne ein Wechselstrornwiderstand w in den Zwischenkreis S eingeschaltet, indem eine Taste ί geöffnet wird. Der Wcchselstromwiderstand besieht, wie aus der Abbildung ersichtlich, aus einem Ohmschen Widerstand und einer Induktivität. Es kann aber auch je nach der Abstimmung der Antenne eine Kapazität verwendet werden. ZweckmäßigWhen the button in the antenna closes, an alternating current resistor w is switched on in the intermediate circuit S by opening a button ί. As can be seen from the figure, the alternating current resistance consists of an ohmic resistance and an inductance. However, depending on the tuning of the antenna, a capacitance can also be used. Appropriate
ίο ist die Anordnung so auszuführen, daß die Einschaltung des Widerstandes in den Zwischenkreis automatisch mit der Tastung erfolgt, d. h. also, daß die Tasten zwangläufig miteinander verbunden sind. Es ist natürlieh auch möglich, anstatt durch Kurzschließen der Kopplung wie in dem angegebenen Beispiel durch Verstimmung der Antenne zu tasten. In diesem Fall müßten selbstverständlich die Verstimmungseinrichtungen mit der Vorrichtung zum Einschalten des Widerstandes in den Zwischenkreis verbunden sein.ίο the arrangement is to be carried out in such a way that the Switching on of the resistor in the intermediate circuit takes place automatically with the keying, d. H. that is, the keys are inevitably linked to one another. It is natural also possible, instead of by short-circuiting the coupling as in the example given by detuning the Antenna to feel. In this case, of course, the detuning devices would have to connected to the device for switching on the resistor in the intermediate circuit be.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET29446D DE440578C (en) | 1924-10-22 | 1924-10-22 | Arrangement for scanning the antenna current in wireless telegraphy |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET29446D DE440578C (en) | 1924-10-22 | 1924-10-22 | Arrangement for scanning the antenna current in wireless telegraphy |
Publications (1)
Publication Number | Publication Date |
---|---|
DE440578C true DE440578C (en) | 1927-02-08 |
Family
ID=7554895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DET29446D Expired DE440578C (en) | 1924-10-22 | 1924-10-22 | Arrangement for scanning the antenna current in wireless telegraphy |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE440578C (en) |
-
1924
- 1924-10-22 DE DET29446D patent/DE440578C/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2530147A1 (en) | TRANSPONDER SYSTEM | |
DE4300736C2 (en) | Combined earth fault interruption circuit with remote control switching device | |
DE440578C (en) | Arrangement for scanning the antenna current in wireless telegraphy | |
DE69604934T2 (en) | LABEL | |
DE1260556B (en) | Circuit for implementing logic functions and methods for tuning the oscillator frequency of this circuit | |
DE102022121380A1 (en) | Authentication system and user interface device | |
DE691721C (en) | Receiver with noise elimination | |
DE659199C (en) | Intermediate frequency receiver for several wavebands | |
DE958124C (en) | Arrangement for coding signal pulses | |
DE416865C (en) | High frequency transmission system | |
DE475133C (en) | Arrangement for keying tube transmitters by detuning, especially for short waves | |
DE1238069B (en) | System for the transmission of messages in discrete information steps | |
DE670723C (en) | Circuit arrangement to achieve the effect of deadened oscillation circuits in a filter circuit | |
DE333297C (en) | Transmitter circuit for high frequency oscillations | |
DE429029C (en) | Method of signaling with arc generators for wireless telegraphy | |
DE650976C (en) | Circuit to achieve an even feedback | |
DE730060C (en) | Device for emitting short-term high-frequency pulses | |
DE574810C (en) | Circuit arrangement for radio receiver with switch for primary or secondary reception | |
DE476062C (en) | Tube transmitter | |
DE515449C (en) | Overlay receiver | |
DE479769C (en) | Two or more element wave filter to eliminate annoying secondary waves in high frequency transmission systems | |
DE347822C (en) | ||
DE432043C (en) | Procedure and arrangement for keying transmitters, especially for short waves | |
DE685378C (en) | Multiple blocking circuit without waveband switch | |
DE486010C (en) | Circuit arrangement for keying tube transmitters |