DE333297C - Transmitter circuit for high frequency oscillations - Google Patents

Transmitter circuit for high frequency oscillations

Info

Publication number
DE333297C
DE333297C DENDAT333297D DE333297DD DE333297C DE 333297 C DE333297 C DE 333297C DE NDAT333297 D DENDAT333297 D DE NDAT333297D DE 333297D D DE333297D D DE 333297DD DE 333297 C DE333297 C DE 333297C
Authority
DE
Germany
Prior art keywords
high frequency
transmitter circuit
frequency oscillations
short circuit
harmonics
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
Application number
DENDAT333297D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefunken AG
Original Assignee
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
Publication date
Application granted granted Critical
Publication of DE333297C publication Critical patent/DE333297C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2/00—Networks using elements or techniques not provided for in groups H03H3/00 - H03H21/00
    • H03H2/005—Coupling circuits between transmission lines or antennas and transmitters, receivers or amplifiers
    • H03H2/006—Transmitter or amplifier output circuits

Landscapes

  • Transmitters (AREA)

Description

Senderschaltung für Hochfrequenzschwingungen. Die Erfindung bezieht sich auf eine Senderschaltung für Hochfrequenzschwingungen, wie sie für die Zwecke der drahtlosen Telegraphie Verwendung finden, und verfolgt im besonderen den Zweck, zu erreichen, daß von der Antenne lediglich die Grundwelle ausgestrahlt wird, während die Oberwellen an dem Übertritt in die Antenne verhindert werden. Gemäß der Erfindung ist parallel zum Hochfrequenzgenerator bzw. zu dem mit dem Hochfrequenzgenerator verbundenen Transformator ein auf die Oberwellen abgestimmter Kurzschlußkreis geschaltet. Ein derartiger Kurzschlußkreis bietet für die Grundwellen einen unendlich großen Widerstand, während er die Oberwellen kurzschließt.Transmitter circuit for high frequency oscillations. The invention relates relying on a transmitter circuit for high frequency oscillations as they are for the purpose wireless telegraphy is used, and has the particular purpose of to achieve that only the fundamental wave is emitted by the antenna while the harmonics are prevented from passing into the antenna. According to the invention is parallel to the high-frequency generator or to the one with the high-frequency generator connected transformer switched a short circuit matched to the harmonics. Such a short circuit offers an infinitely large one for the fundamental waves Resistance while shorting the harmonics.

Die Zeichnung zeigt eine beispielsweise Schaltung.The drawing shows an example circuit.

T ist die Sekundärspule des an den Hochfrequenzgenerator angeschlossenen Transformators. Falls eine Kathodenröhre zur Schwingungserzeugung Verwendung findet, kann an Stelle des Transformators die Röhre mit ihren Kopplungselementen eingeschaltet werden. Die Sekundärspule des Transformators ist bei B geerdet und bei A -mit der Antenne S verbunden. Vor der Antennenselbstinduktion L ist gemäß der Erfindung ein Kurzschlußkreis K vorgesehen, der aus der Selbstinduktion J und der Kapazität C besteht. Mit Hilfe beider Werte ist der Kurzschlußkreis K auf die Oberwellen abgestimmt und bietet infolgedessen für die Oberwellen einen Kurzschluß und für die Grundwelle einen unendlich großen Widerstand dar.T is the secondary coil of the connected to the high frequency generator Transformer. If a cathode tube is used to generate vibrations, the tube with its coupling elements can be switched on instead of the transformer will. The secondary coil of the transformer is grounded at B and at A - with the Antenna S connected. Before the antenna self-induction L is a according to the invention Short circuit K provided, which consists of the self-induction J and the capacitance C consists. With the help of both values, the short circuit K is matched to the harmonics and consequently offers a short circuit for the harmonics and a short circuit for the fundamental wave an infinitely great resistance.

Claims (1)

PATENTANSPRUCH: -Senderschaltung für Hochfrequenzschwingungen für die Zwecke der drahtlosen Telegraphie, dadurch gekennzeichnet, daß parallel zum Hochfrequenzgenerator bzw. zu dem mit dem Hochfrequenzgenerator verbundenen Transformator ein auf die Oberwellen abgestimmter Kurzschlußkreis gelegt ist. Claim: transmitter circuit for high frequency oscillations for the purpose of wireless telegraphy, characterized in that parallel to the high frequency generator or to the transformer connected to the high frequency generator, a short circuit adapted to the harmonics is placed.
DENDAT333297D Transmitter circuit for high frequency oscillations Expired DE333297C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE333297T

Publications (1)

Publication Number Publication Date
DE333297C true DE333297C (en) 1921-02-22

Family

ID=6208925

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT333297D Expired DE333297C (en) Transmitter circuit for high frequency oscillations

Country Status (1)

Country Link
DE (1) DE333297C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE852560C (en) * 1948-11-13 1952-10-16 Siemens Ag Circuit arrangement for filtering out harmonics
DE973679C (en) * 1952-07-25 1960-04-28 Telefunken Gmbh Circuit arrangement for suppressing the emission of the harmonics of an oscillator of a VHF receiver

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE852560C (en) * 1948-11-13 1952-10-16 Siemens Ag Circuit arrangement for filtering out harmonics
DE973679C (en) * 1952-07-25 1960-04-28 Telefunken Gmbh Circuit arrangement for suppressing the emission of the harmonics of an oscillator of a VHF receiver

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