DE515472C - Oscillation circuit for short electromagnetic waves - Google Patents

Oscillation circuit for short electromagnetic waves

Info

Publication number
DE515472C
DE515472C DET36966D DET0036966D DE515472C DE 515472 C DE515472 C DE 515472C DE T36966 D DET36966 D DE T36966D DE T0036966 D DET0036966 D DE T0036966D DE 515472 C DE515472 C DE 515472C
Authority
DE
Germany
Prior art keywords
oscillation circuit
metal
electromagnetic waves
short electromagnetic
metal coating
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
DET36966D
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 AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Telefunken AG filed Critical Telefunken AG
Priority to DET36966D priority Critical patent/DE515472C/en
Application granted granted Critical
Publication of DE515472C publication Critical patent/DE515472C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/008—Details of transformers or inductances, in general with temperature compensation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/06—Cavity resonators

Description

Telefunken Gesellschaft für drahtlose Telegraphie m. b. H. in Berlin Schwingungskreis für kurze elektromagnetische Wellen Es hat sich gezeigt, daß bei elektrischen Schwingungskreisen, insbesondere bei solchen für kurze Wellen, die Eigenfrequenz des Schwingungskreises in hohem Maße temperaturabhängig ist. Dies ist durchaus verständlich, da zu einer fühlbaren Frequenzä.nderung nur äußerst kleine Formänderungen, wie sie durch den Wärmeausdehnungskoeffiz ienten der verwendeten Materialien beiTemperatur schwankungen entstehen, nötig sind. Um diese Formänderungen möglichst klein zu halten, «erden erfindungsgemäß Materialien von äußerst kleinen Wärmeausdehnungskoeffizienten verwandt. Da die Metallegierungen mit kleinen Wärrneausdehnungskoeffizienten schlecht zu bearbeiten sind und meist nach der Bearbeitung innere Spannungen besitzen, werden erfindungsgemäß Nichtleiter (Isolatoren) von geringem Temperaturkoeffizienten, insbesondere geschmolzener Quarz, Porzellan, Steatit, verwendet, welche äußerlich mit einem metallischen Überzug versehen sind, so daß ihre Oberfläche leitend wird. Geeignete Materialien hierfür sind Kupfer und Silber der hohen Leitfähigkeit wegen, zweckmäßig mit einem weiteren Überzuge aus Gold oder Platin, um deri leitenden Überzug von atmosphärischen Einflüssen zu schützen. Die Überzüge können auf beliebige Weise, z. B. auf keramischem oder elektrolytischem Wege oder mit beiden Verfahren, nacheinander aufgebracht werden. Die erforderliche Schichtdicke richtet sich nach der verwendeten Frequenz. Sie hängt von der Eindringtiefe der Wechselströme in das betreffende Material ab und braucht für hohe Frequenzen nur einige hundertstel Millimeter zu betragen.Telefunken Society for Wireless Telegraphy m. B. H. in Berlin Oscillation circuit for short electromagnetic waves It has been shown that with electrical oscillation circuits, especially those for short waves that Natural frequency of the oscillating circuit is temperature-dependent to a large extent. this is quite understandable, since there is only an extremely small change in frequency that can be felt Changes in shape, as they are ienten by the thermal expansion coefficient of the used Materials that arise from temperature fluctuations are necessary. To these shape changes In accordance with the invention, materials of extremely small size are to be kept as small as possible Thermal expansion coefficient related. Because the metal alloys with small coefficients of thermal expansion are difficult to process and usually have internal tensions after processing, according to the invention, non-conductors (insulators) with a low temperature coefficient, especially fused quartz, porcelain, steatite, which are used externally are provided with a metallic coating so that their surface becomes conductive. Suitable materials for this are copper and silver because of their high conductivity, expediently with a further coating of gold or platinum to deri the conductive coating to protect from atmospheric influences. The coatings can be used in any way, z. B. ceramic or electrolytic or with both methods, one after the other be applied. The required layer thickness depends on the one used Frequency. It depends on the depth of penetration of the alternating currents into the material in question and only needs to be a few hundredths of a millimeter for high frequencies.

Claims (1)

PATENTANSPRÜCHr: i. Schwingungskreis für kurze elektromagnetische Wellen, dadurch gekennzeichnet, daß die stromführenden Schaltelemerite aus einem Material von niedrigem Wärmeausdehnungskoeffizienten bestehen, deren Oberfläche teilweise oder völlig mit Metall überzogen ist. a. Schwingungskreis nach Anspruch i, dadurch gekennzeichnet, daß die Schaltelemente aus geschmolzenem Quarz hergestellt sind, deren Oberfläche mit einem Metallüberzug versehen ist. 3. Schwingungskreis nach Anspruch i, dadurch gekennzeichnet, daß die Schaltelemente aus Porzellan hergestellt sind, deren Oberfläche keramisch oder galvanisch oder auf beide Weisen nacheinander mit Metall überzogen ist. Metallüberzug für Schwingungskreise nach Anspruch i, dadurch gekennzeichnet, daß über einer Metallschicht von guter Leitfähigkeit eine chemisch inaktive Metallschicht aufgebracht ist. 5. Metallüberzug nach Anspruch i und q., dadurch gekennzeichnet, daß als Schicht guter Leitfähigkeit Kupfer oder Silber, als Schutzschicht Gold oder Platin benutzt wird.PATENT CLAIM: i. Oscillation circuit for short electromagnetic Waves, characterized in that the current-carrying Schaltelemerite from one Material of low coefficient of thermal expansion consist of its surface is partially or completely covered with metal. a. Oscillation circuit according to claim i, characterized in that the switching elements are made of fused quartz whose surface is provided with a metal coating. 3rd oscillation circuit according to claim i, characterized in that the switching elements are made of porcelain are, the surface of which is ceramic or electroplated or in both ways one after the other is covered with metal. Metal coating for oscillating circuits according to claim i, characterized in that characterized in that a chemically inactive metal layer is applied. 5. Metal coating according to claim i and q., characterized in that the layer of good conductivity is copper or silver, gold or platinum is used as a protective layer.
DET36966D 1929-05-25 1929-05-25 Oscillation circuit for short electromagnetic waves Expired DE515472C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET36966D DE515472C (en) 1929-05-25 1929-05-25 Oscillation circuit for short electromagnetic waves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET36966D DE515472C (en) 1929-05-25 1929-05-25 Oscillation circuit for short electromagnetic waves

Publications (1)

Publication Number Publication Date
DE515472C true DE515472C (en) 1930-12-31

Family

ID=7559817

Family Applications (1)

Application Number Title Priority Date Filing Date
DET36966D Expired DE515472C (en) 1929-05-25 1929-05-25 Oscillation circuit for short electromagnetic waves

Country Status (1)

Country Link
DE (1) DE515472C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE743236C (en) * 1933-10-07 1943-12-27 Telefunken Gmbh Power supply for a short wave tube
DE744014C (en) * 1936-08-25 1944-01-07 Aeg Process for the production of structural parts made of carbon or graphite for electrical discharge vessels, in particular short-wave tubes
DE755073C (en) * 1937-09-15 1953-03-09 Siemens & Halske A G Process for the production of electrical capacitors
DE898478C (en) * 1940-09-15 1953-11-30 Siemens Ag Electric capacitor for high operating temperatures

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE743236C (en) * 1933-10-07 1943-12-27 Telefunken Gmbh Power supply for a short wave tube
DE744014C (en) * 1936-08-25 1944-01-07 Aeg Process for the production of structural parts made of carbon or graphite for electrical discharge vessels, in particular short-wave tubes
DE755073C (en) * 1937-09-15 1953-03-09 Siemens & Halske A G Process for the production of electrical capacitors
DE898478C (en) * 1940-09-15 1953-11-30 Siemens Ag Electric capacitor for high operating temperatures

Similar Documents

Publication Publication Date Title
ATE316426T1 (en) METALLIZATION STRUCTURES FOR MICROELECTRONIC APPLICATIONS AND METHOD FOR PRODUCING THESE STRUCTURES
DE19837266A1 (en) Dielectric resonator antenna
DE1283970B (en) Metallic contact on a semiconductor component
ES443346A1 (en) Methods of forming conductors on substrates involving electroplating
DE3340563A1 (en) SUMMARY PASSIVE ELECTRICAL CIRCUIT COMPONENTS AND METHOD FOR THEIR PRODUCTION
DE1956679A1 (en) Device for installing a transistor in a microwave stripline circuit
DE515472C (en) Oscillation circuit for short electromagnetic waves
EP0046640B1 (en) Thick film conductor employing copper oxide
JP2013229851A (en) High frequency transmission line, antenna and electronic circuit board
DE1288174B (en) Metallic coating on an insulating base
DE1912045A1 (en) Mounting arrangement for a semiconductor component
DE102009027088A1 (en) Carrier for transmitting high-frequency signals and corresponding carrier layout method
DE1590530B1 (en) METHOD FOR MANUFACTURING MICROWAVE COMPONENTS
GB1001634A (en) Electronic circuit boards
US2031846A (en) Electric oscillation circuit
DE4315847A1 (en) Connection between a transmitter and/or receiver and an antenna
DE895199C (en) Contact detector
DE2309078A1 (en) POWER LOAD RESISTOR
DE2136201B2 (en) PROCEDURE FOR ATTACHING METALLIC LINES TO A SOLID ELECTRICAL COMPONENT
DE2753546A1 (en) RF microstrip line with curved recess in substrate - is designed to keep impedance constant by gradually reducing line thickness
US2143824A (en) Asymmetrical conductor
DE935915C (en) Vacuum-tight or gas- or liquid-tight implementation of power lines, especially in large numbers, through the walls and lids of vessels
DE7106898U (en) Integrated hybrid circuit
DE1590530C (en) Process for the production of micro wave components
DE19945914C1 (en) Process for producing precise soldering areas on a circuit carrier, in particular thin film substrate