DE635972C - Überrueckkopplungsempfaenger with intermediate frequency section - Google Patents
Überrueckkopplungsempfaenger with intermediate frequency sectionInfo
- Publication number
- DE635972C DE635972C DEM127982D DEM0127982D DE635972C DE 635972 C DE635972 C DE 635972C DE M127982 D DEM127982 D DE M127982D DE M0127982 D DEM0127982 D DE M0127982D DE 635972 C DE635972 C DE 635972C
- Authority
- DE
- Germany
- Prior art keywords
- frequency
- intermediate frequency
- pendulum
- überrueckkopplungsempfaenger
- frequency section
- 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
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D11/00—Super-regenerative demodulator circuits
- H03D11/02—Super-regenerative demodulator circuits for amplitude-modulated oscillations
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
- H03D7/08—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between the same two electrodes
Description
Überrückkopplungsempäner.@Ait Zwischenfrequenzteil Es ist bekannt, das Pendelfrequenzprinzip bei einem überlagerungsempfänger anzuwenden, und zwar in der Weise, däß einem Gitter einer selbstschwingenden Mischröhre eine in einer besonderen Röhre erzeugte Pendelfrequenz zugeführt wird, so daß im Takte der Pendelfrequenz eine Rückkopplung für die Empfangsfrequenz stattfindet.Overfeedback receiver. @ Ait intermediate frequency part It is known to apply the pendulum frequency principle to a heterodyne receiver, namely in such a way that a grid of a self-oscillating mixer tube one in one special tube generated pendulum frequency is fed, so that in the cycle of the pendulum frequency a feedback for the receiving frequency takes place.
Nach der Erfindung wird eine Vereinfachung eines überrückkopplungsempfängers mit Zwischenfrequenzteil dadurch erreicht, daß zur Erzeugung der Pendelfrequenz und der zur Herstellung der Zwischenfrequenz erforderlichen überlagerungsfrequenz ein gemeinsamer Oszillator vorgesehen ist, von dem die Grundfrequenz als Pendelfrequenz und eine höhere Harmonische als überlagerungsfrequenz dient.According to the invention there is a simplification of a feedback receiver achieved with intermediate frequency part in that to generate the pendulum frequency and the superposition frequency required to produce the intermediate frequency a common oscillator is provided, of which the base frequency is used as a pendulum frequency and a higher harmonic serves as a beat frequency.
Ein Ausführungsbeispiel für die Erfindung ist in der Abbildung dargestellt. Hier ist mit i eine Eingitterröhre in der bekannten Superregenerativschaltung bezeichnet. Ihr Gitter ist über einen Kreis 3 und eine von einem Kondensator überbrückte Kopplungsspule q., welcher die Pendelfrequenz zugeführt wird, mit der Kathode verbunden. Die Pendelfrequenz wird von einer Röhre 6 L O mit dem Gitterkreis Q geliefert. Die Gitterkreisspule 3 ist mit einer Spule a gekoppelt, welche in Reihe init einer Ausgangsspule 7 liegt. Diese Spule 7 ist mit einer weiteren Spule -gekoppelt, .die mit dem Eingang des Zwischenfrequenzteiles verbunden ist, an den der Gleichrichter R und der Lautsprecher 9 angeschlossen sind.An embodiment of the invention is shown in the figure. Here, i denotes a single-grid tube in the known super-regenerative circuit. Its grid is connected to the cathode via a circuit 3 and a coupling coil q. Bridged by a capacitor to which the pendulum frequency is fed. The pendulum frequency is supplied by a tube 6 LO with the grid circle Q. The lattice circle coil 3 is coupled to a coil a which is in series with an output coil 7. This coil 7 is coupled to a further coil, which is connected to the input of the intermediate frequency part to which the rectifier R and the loudspeaker 9 are connected.
Mit dem Eingang des Zwischenfrequenzteiles ist ferner eine Spule- 8' gekoppelt, welche in dem auf eine Harmonische der Pendelfrequenz abgestimmten Zwischenkreis io liegt. Diese Harmonische dient als Überlagerungsfrequenz zur Erzeugung der Zwischenfrequenz.With the input of the intermediate frequency part is also a coil 8 'coupled, which in the tuned to a harmonic of the pendulum frequency Intermediate circuit is OK. This harmonic serves as a superposition frequency for generation the intermediate frequency.
Der Pendelfrequenzschwingungskreis soll ebenso wie der Abstimmkondensator im Kreis io veränderlich sein, und es sind diese beiden Teile miteinander und erforderlirhenfalls auch noch mit dem Abstimmkondensator des Gitterkreises 3 der Superrcgenerativröhre i gekuppelt. Bei einer solchen Einknopfabstimmung muß natürlich eine Einrichtung vorgesehen sein, die die Differenz zwischen der Eigenfrequenz des Gitterkreises der Superregenerativröhre und der örtlichen Überlagerungsfrequenz konstant und gleich der Zwischenfrequenz hält.The pendulum frequency oscillation circuit should as well as the tuning capacitor be variable in a circle, and these two parts are together and if necessary also with the tuning capacitor of the grid circle 3 of the supergenerative tube i coupled. With such a one-button tuning, of course, one device must be used be provided which is the difference between the natural frequency of the grid circle of the super-regenerative tube and the local superposition frequency constant and equal the intermediate frequency holds.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM127982D DE635972C (en) | 1933-07-21 | Überrueckkopplungsempfaenger with intermediate frequency section |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM127982D DE635972C (en) | 1933-07-21 | Überrueckkopplungsempfaenger with intermediate frequency section | |
| GB20642/33A GB422866A (en) | 1933-07-21 | 1933-07-21 | Improvements in or relating to radio and other modulated carrier or like receivers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE635972C true DE635972C (en) | 1936-09-28 |
Family
ID=25988443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEM127982D Expired DE635972C (en) | 1933-07-21 | Überrueckkopplungsempfaenger with intermediate frequency section |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE635972C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE755710C (en) * | 1936-06-23 | 1953-09-07 | Siemens & Halske A G | Circuit arrangement for frequency multiplication |
| DE1088549B (en) * | 1957-05-24 | 1960-09-08 | Standard Elektrik Lorenz Ag | Magnetic amplifier circuit for the NF amplifier part of a portable radio receiver |
-
0
- DE DEM127982D patent/DE635972C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE755710C (en) * | 1936-06-23 | 1953-09-07 | Siemens & Halske A G | Circuit arrangement for frequency multiplication |
| DE1088549B (en) * | 1957-05-24 | 1960-09-08 | Standard Elektrik Lorenz Ag | Magnetic amplifier circuit for the NF amplifier part of a portable radio receiver |
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