US2226479A - Apparatus for mechanically and electrically connecting conductors carrying high frequency currents - Google Patents

Apparatus for mechanically and electrically connecting conductors carrying high frequency currents Download PDF

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Publication number
US2226479A
US2226479A US186454A US18645438A US2226479A US 2226479 A US2226479 A US 2226479A US 186454 A US186454 A US 186454A US 18645438 A US18645438 A US 18645438A US 2226479 A US2226479 A US 2226479A
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United States
Prior art keywords
conductors
high frequency
length
cable
tuning
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Expired - Lifetime
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US186454A
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English (en)
Inventor
Pupp Wolfgang
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Julius Pintsch AG
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Julius Pintsch AG
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/04—Coaxial resonators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/02—Lecher resonators

Definitions

  • This invention relates to ap aratus'frdi mechanically and electrically connecting conductors carrying high frequency, currents, and, con- 5 cer'ns'in particular apparatus for transmitting ergy-Ttransmittingfcables) [such as. are empl oyed',f for example; between oscillation generf ators and loadingresistances.
  • the primary object of the present invention is to provide apparatus by means of which it is possible, to form a .mechanicaland electrical connection between two members carrying high frequency energy and to reduce the influence of contact resistance between these members.
  • the present invention provides apparatus for mechanically and electrically connecting conductors carrying high frequency current, in par-. ticular energy-transmitting cables, comprisirw.
  • the bore of the tuning member slides over the central conductor of the energytran'smitting cable, while the outer surface of the member slides inside the outer conductor of t the cable, the length of the member being equal at least to one quarter of the operating wave length.
  • the elasticity of the wall of the tuning ember is such that the wall adapts 5 itself to the shape of the ,energy-transmitting cable.
  • Figure 1 is a diagram showing the application" of the present invention. to a parallel conductor a cable; j I i v l Figure 2 is a sectional elevation of a concentric energy-transmitting cable tunedby a meme ber constructed in accordance withthe present invention; r
  • Figure 3 is a sectionalelevation of a concentric energy-transmitting cable tuned in accordance with the present invention and connected and
  • Figure 4 is a sectional view of a concentric enorgy-transmitting cable provided with a tuning 40 member of variable length.
  • a parallel conductor cable (Lecher wire) I is connected to a high frequency electric generator la.
  • This cable is tuned by means of a short-circuiting loop 2, the limbs of which are of the length M4 along the axis of the cable, where A is the wave-length of the transmitted current.
  • the limbs are preferably constructed in the form of tubes which slide over'the two conductors. In this manner the current flowing between the short circuiting loop and the energy-transmitting cable (at 3) is reduced to zero.
  • FIG. 2 shows a, further example of the present, invention, in which a concentric cable .comprises an outer conductor 4 and a central conductor 5. An oscillation generator is connected to the cable at 6.
  • the tuning member I is constructed in the form of a piston the length of which is M4. .
  • the outer conductor H and the inner conductor ltiof the member 1 are electrically connected together, for exam ple, by soldering or by constructing the piston in a single piece.
  • the parts 10 and H are provided with slots 72 in order to increase the spring action.
  • the sliding of the piston in the direction of the axis may be effected in various ways, a simple manner being with the aid of a handle 8 projecting through a slot in the outer conductor 4.
  • the piston may be moved through micrometer action by which the position can accurately and uniformly be varied, and adjusting mechanism can be provided with a scale divided into wave lengths or frequencies.
  • the present invention is applied to an energy-transmitting cable connected to a plurality of radiating systems, such as are fully described in United States of America patent application Serial No. 129,218.
  • the outer conductor 4 and the inner conductor 5 are connected to a source of high frequency energy which is radiated through the individual radiating systems 9 which are connected to the energy-transmitting cable by means of gaps therein.
  • a tuning piston .1 having a length of M4 is again provided for tuning the cable.
  • the parts H and 70 should abut directly against the outer conductor and the inner conductor re-' spectively of the energy-transmitting cable, because the contact resistance between the tuning piston and the energy-transmitting cable is negligible owing to the fact that there is no current :iowing at the junction of the cable and the pis- It may be desirable when the .operating wave length of the circuit is not of fixed value to provide a set of tuning members of various sizes,
  • FIG. 4 A constructional example of this embodiment of the present invention in which the effective lengths may be varied simultaneously is shown in Figure 4.
  • the outer conductor 4 and the inner conductor 5 of the energy-transmitting cable are connected to a source of high frequency energy.
  • the tuning member 82 is provided with tubular component parts l3 and 14 which extend into flexible parts Ba and Ma, these being electrically conductive at least along the surfaces.
  • the flexible parts l3a and Ma are connected to metal rings l5 and it, which are rigidly connected together by ceramic parts'23- of either disc or rod formation.
  • the member I2 is provided with a tubular extension 24 having a screw thread along the outer surface.
  • the distance of the rings I5 and Hi from the part l2 may be reduced by turning a nut 25 which engages the screw threaded extension 24, since the ceramic parts 23 are connectedto parts 21, 28 associated with the nut 25 by rods 26.
  • the arrangement is such that the nut 25 may be turned without the rods 26 being rotated because the part 21 of the nut 25 rotatably engages the ring 28 connected to the rods 26.
  • the present invention is not limited to the examples described and illustrated, and may be applied, for example, in all cases where it is de-
  • the invention may be employed with considerable advantage with the apparatus described and claimed in United States of America patent application Serial No. 129,218, and in particular in combination with the valves described and claimed in United States of America patent specification No. 2,128,233 and modifications thereof.
  • Apparatus for tuning conductors carrying high frequency currents, in particular energytransmitting cables comprising a connecting member which short-circuits said conductors at points located at nodes of the current flowing through the conductors, said connecting member being of a length along the axis of the conductors equal to at least one-quarter of the operating wave-length of the current flowing through said conductors.
  • Apparatus for tuning concentric energy transmitting cables having an outer conductor and a central conductor, comprising a hollow cylindrical member which is open at one end and which short-circuits the outer and central conductors of the cable at points located at nodes of the current flowing through said conductors, the said memberbeing of a length along the axis of the conductor equal at least to one quarter of the operating wave-length of the current flowing through saidv conductors.
  • Apparatus for tuning concentric energytransmitting cables having central conductors comprising in combination a hollow cylindrical member which is open at one end and which short-circuits the conductors of the cable, the said member being of a length along the axis of the conductors equal at least to one quarter of the operating wave-length, and a plurality of longitudinal slots in the surface of the said memand which short-circuits the outer and central conductors of the cable at points located at nodes of the current flowing through said conductors, the said member being of a length along the axis of the conductors equal .at least to one quarter of the operating wave-length, and means for varying the position of the said member along the axis of said conductors.
  • Apparatus for tuning concentric energytransmitting cables having central conductors comprising in combination a hollow cylindrical member which is open at one end and which short-circuits the conductors of the cable, the said member being of a length along the axis of the conductors equal at least to one quarter of the operating wave-length, means for varying the Tit high frequency current, in particular energytransmitting cables, comprising a member which short-circuits the said conductors at points located at nodes of the current flowing through said conductors and are of a length along the axis of the conductors equal at least to one quarter of the operating wave-length of the current flowing through saidconductors and means for varying the length of said member along the axis of the conductors in accordance with variations in the operating wave-length of the.current flowing through said conductors.
  • Apparatus for tuning concentric energytransmitting cables having an outer and a central conductor comprising a hollow cylindrical member which is open at one end and which shortcircuits the outer and central conductors of the cable at points located at nodes of the current flowing through the conductors, the said member being or a length along the axis of the conductors equal at least to one-quarter of the op-

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US186454A 1937-02-08 1938-01-22 Apparatus for mechanically and electrically connecting conductors carrying high frequency currents Expired - Lifetime US2226479A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2226479X 1937-02-08

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US2226479A true US2226479A (en) 1940-12-24

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US (1) US2226479A (enrdf_load_stackoverflow)
FR (1) FR832608A (enrdf_load_stackoverflow)
NL (1) NL50321C (enrdf_load_stackoverflow)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438912A (en) * 1942-06-29 1948-04-06 Sperry Corp Impedance transformer
US2451876A (en) * 1943-06-05 1948-10-19 Winfield W Salisbury Radio-frequency joint
US2463415A (en) * 1943-08-26 1949-03-01 Westinghouse Electric Corp Shorting bar for concentric lines
US2464276A (en) * 1943-08-03 1949-03-15 Sperry Corp Radiant energy directivity pattern scanner
US2470805A (en) * 1941-09-12 1949-05-24 Emi Ltd Means for preventing or reducing the escape of high-frequency energy
US2479209A (en) * 1945-07-09 1949-08-16 Chu Lan Jen Antenna
US2500676A (en) * 1947-01-14 1950-03-14 Raytheon Mfg Co Heating apparatus
US2503256A (en) * 1943-01-29 1950-04-11 Sperry Corp Ultra high frequency wavemeter
US2507528A (en) * 1945-08-13 1950-05-16 Standard Telephones Cables Ltd Antenna
US2520705A (en) * 1945-03-21 1950-08-29 Gen Motors Corp Shielded ignition cable
US2526678A (en) * 1943-04-02 1950-10-24 Sperry Corp Ultra high frequency coupling
US2542844A (en) * 1943-08-14 1951-02-20 Bell Telephone Labor Inc Microwave directive antenna
US2542974A (en) * 1946-01-26 1951-02-27 Standard Telephones Cables Ltd Tunable high-frequency circuit
US2543721A (en) * 1944-02-09 1951-02-27 Emi Ltd High-frequency electrical transmission line and wave guide
US2557391A (en) * 1942-10-07 1951-06-19 Westinghouse Electric Corp Coupling device for micro-wave energy
US2557686A (en) * 1946-03-27 1951-06-19 John A Radio Wave guide with electrical end termination
US2560353A (en) * 1945-03-16 1951-07-10 Bell Telephone Labor Inc Cavity resonator
US2562909A (en) * 1942-06-29 1951-08-07 Sperry Corp Impedance transformer for concentric lines
US2570824A (en) * 1945-07-04 1951-10-09 Rca Corp Wide band antenna
US2572672A (en) * 1947-05-06 1951-10-23 Bell Telephone Labor Inc Impedance transforming network
US2573746A (en) * 1945-09-19 1951-11-06 Honorary Advisory Council Sci Directive antenna for microwaves
US2593183A (en) * 1946-03-30 1952-04-15 Hazeltine Research Inc Tunable wave signal device
US2604594A (en) * 1943-10-02 1952-07-22 Milton G White Arrangement for varying wave lengths in coaxial lines
US2630487A (en) * 1949-07-22 1953-03-03 Gen Electric Apparatus for insulatingly terminating concentric conductor resonators
US2637782A (en) * 1947-11-28 1953-05-05 Motorola Inc Resonant cavity filter
US2641707A (en) * 1948-10-15 1953-06-09 Eastern Ind Inc Frequency responsive apparatus
US2648000A (en) * 1943-10-02 1953-08-04 Us Navy Control of wave length in wave guides
US2649577A (en) * 1949-04-13 1953-08-18 John W Wolfe Transmission line tuning device for electronic systems
US2666185A (en) * 1946-02-18 1954-01-12 George E Hulstede Tuning plunger for a coaxial line type ultrahigh-frequency circuit
US2699501A (en) * 1945-08-02 1955-01-11 Young Louise Rapid scanning device
US2736868A (en) * 1946-01-11 1956-02-28 Jr Persa R Bell Cavity tuner

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2470805A (en) * 1941-09-12 1949-05-24 Emi Ltd Means for preventing or reducing the escape of high-frequency energy
US2438912A (en) * 1942-06-29 1948-04-06 Sperry Corp Impedance transformer
US2562909A (en) * 1942-06-29 1951-08-07 Sperry Corp Impedance transformer for concentric lines
US2557391A (en) * 1942-10-07 1951-06-19 Westinghouse Electric Corp Coupling device for micro-wave energy
US2503256A (en) * 1943-01-29 1950-04-11 Sperry Corp Ultra high frequency wavemeter
US2526678A (en) * 1943-04-02 1950-10-24 Sperry Corp Ultra high frequency coupling
US2451876A (en) * 1943-06-05 1948-10-19 Winfield W Salisbury Radio-frequency joint
US2464276A (en) * 1943-08-03 1949-03-15 Sperry Corp Radiant energy directivity pattern scanner
US2542844A (en) * 1943-08-14 1951-02-20 Bell Telephone Labor Inc Microwave directive antenna
US2463415A (en) * 1943-08-26 1949-03-01 Westinghouse Electric Corp Shorting bar for concentric lines
US2604594A (en) * 1943-10-02 1952-07-22 Milton G White Arrangement for varying wave lengths in coaxial lines
US2648000A (en) * 1943-10-02 1953-08-04 Us Navy Control of wave length in wave guides
US2543721A (en) * 1944-02-09 1951-02-27 Emi Ltd High-frequency electrical transmission line and wave guide
DE973642C (de) * 1944-02-09 1960-04-21 Emi Ltd Laengsverschiebbare Abschlussvorrichtung fuer konzentrische Hochfrequenzleitungen oder Hohlleiter
US2560353A (en) * 1945-03-16 1951-07-10 Bell Telephone Labor Inc Cavity resonator
US2520705A (en) * 1945-03-21 1950-08-29 Gen Motors Corp Shielded ignition cable
US2570824A (en) * 1945-07-04 1951-10-09 Rca Corp Wide band antenna
US2479209A (en) * 1945-07-09 1949-08-16 Chu Lan Jen Antenna
US2699501A (en) * 1945-08-02 1955-01-11 Young Louise Rapid scanning device
US2507528A (en) * 1945-08-13 1950-05-16 Standard Telephones Cables Ltd Antenna
US2573746A (en) * 1945-09-19 1951-11-06 Honorary Advisory Council Sci Directive antenna for microwaves
US2736868A (en) * 1946-01-11 1956-02-28 Jr Persa R Bell Cavity tuner
US2542974A (en) * 1946-01-26 1951-02-27 Standard Telephones Cables Ltd Tunable high-frequency circuit
US2666185A (en) * 1946-02-18 1954-01-12 George E Hulstede Tuning plunger for a coaxial line type ultrahigh-frequency circuit
US2557686A (en) * 1946-03-27 1951-06-19 John A Radio Wave guide with electrical end termination
US2593183A (en) * 1946-03-30 1952-04-15 Hazeltine Research Inc Tunable wave signal device
US2500676A (en) * 1947-01-14 1950-03-14 Raytheon Mfg Co Heating apparatus
US2572672A (en) * 1947-05-06 1951-10-23 Bell Telephone Labor Inc Impedance transforming network
US2637782A (en) * 1947-11-28 1953-05-05 Motorola Inc Resonant cavity filter
US2641707A (en) * 1948-10-15 1953-06-09 Eastern Ind Inc Frequency responsive apparatus
US2649577A (en) * 1949-04-13 1953-08-18 John W Wolfe Transmission line tuning device for electronic systems
US2630487A (en) * 1949-07-22 1953-03-03 Gen Electric Apparatus for insulatingly terminating concentric conductor resonators

Also Published As

Publication number Publication date
FR832608A (fr) 1938-09-29
NL50321C (enrdf_load_stackoverflow)

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