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GB575511A - Improvements in coaxial transmission lines, particularly in the termination thereof - Google Patents

Improvements in coaxial transmission lines, particularly in the termination thereof

Info

Publication number
GB575511A
GB575511A GB1869/44A GB186944A GB575511A GB 575511 A GB575511 A GB 575511A GB 1869/44 A GB1869/44 A GB 1869/44A GB 186944 A GB186944 A GB 186944A GB 575511 A GB575511 A GB 575511A
Authority
GB
United Kingdom
Prior art keywords
disc
conductor
transmission line
resistor
screwed
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
GB1869/44A
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.)
Marconi Instruments Ltd
Original Assignee
Marconi Instruments Ltd
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 Marconi Instruments Ltd filed Critical Marconi Instruments Ltd
Priority to GB1869/44A priority Critical patent/GB575511A/en
Priority to US591731A priority patent/US2498335A/en
Publication of GB575511A publication Critical patent/GB575511A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/24—Terminating devices
    • H01P1/26—Dissipative terminations
    • H01P1/266—Coaxial terminations

Landscapes

  • Measuring Leads Or Probes (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

575,511. Current and voltage measuring apparatus ; non-metal resistances. MARCONI INSTRUMENTS, Ltd., and HUNT, E. W. Feb. 1, 1944, No. 1869. [Class 37] A resistive termination for a coaxial transmission line includes a centrally apertured carbon disc, of which the outer periphery makes contact with an extension of the outer conductor of the transmission line and the periphery of the central aperture makes contact with an extension of the inner conductor. An outer conductive tubular member 7 is internally threaded at both ends and provided with an abutment 8. Into one end is screwed a tubular member 3 having an internal diameter equal to the internal diameter of the transmission line. Coaxially supported by insulating material 9 is an inner conductor 4 having an external diameter equal to that of the inner conductor of the transmission line. The terminating resistor comprises a carbon disc 1 with a central aperture, the outer and inner cylindrical surfaces c, d and adjacent rings a, b on both flat faces being metallised. The disc is threaded on the conductor 4 so that the metallised surface d makes contact therewith. The member 3, conductor 4 and disc 1 are then screwed into the member 7 so that connection is made between the metallised surfaces a, c continuously around the disc, with the members 3, 7. A crystal rectifier 2 is connected to the conductor 4 by a plug and socket 10. Screwed into the right-hand end of the member 7 is a conductive plug 11 having a coaxial bore through which passes an insulated shank 12 having an inner terminal 6 for connection to the other end of the crystal rectifier 2. The outer face of the terminal 6 and the inner end of the plug 11 are insulated from each other by a disc 5 of mica and form a by-pass condenser for high-frequency energy. Between the shank 12 and the outer member 7 is connected a micro-ammeter which measures the voltage drop across the resistor 1. The resistor 1 may be made by drilling through the centre of a carbon resistor of 2-watt rating (e.g., Erie R.M.A.1.) nominal value 400-1,000 ohms and parting off a section # in. wide. The entire surface is then electroplated with copper and a ring of the deposited copper is removed from each end surface until the resistance from the centre to the outer edge is of the required value. The completed section is then impregnated with wax. Specification 556,726 is referred to.
GB1869/44A 1944-02-01 1944-02-01 Improvements in coaxial transmission lines, particularly in the termination thereof Expired GB575511A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1869/44A GB575511A (en) 1944-02-01 1944-02-01 Improvements in coaxial transmission lines, particularly in the termination thereof
US591731A US2498335A (en) 1944-02-01 1945-05-03 Termination for coaxial lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1869/44A GB575511A (en) 1944-02-01 1944-02-01 Improvements in coaxial transmission lines, particularly in the termination thereof

Publications (1)

Publication Number Publication Date
GB575511A true GB575511A (en) 1946-02-21

Family

ID=9729447

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1869/44A Expired GB575511A (en) 1944-02-01 1944-02-01 Improvements in coaxial transmission lines, particularly in the termination thereof

Country Status (2)

Country Link
US (1) US2498335A (en)
GB (1) GB575511A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2857557A (en) * 1953-03-06 1958-10-21 Moser Glaser & Co Ag High voltage substation
GB2128827A (en) * 1980-10-20 1984-05-02 Philips Electronic Associated Microwave detector arrangement

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557122A (en) * 1951-06-19 Coaxial crystal detector and line
US3027514A (en) * 1951-05-05 1962-03-27 Bird Electronic Corp Electrical wave indicator for high frequency lines
BE512298A (en) * 1951-06-22
US2844792A (en) * 1952-11-26 1958-07-22 Bird Electronic Corp High frequency electrical meter cartridge
US2777995A (en) * 1953-01-23 1957-01-15 Gilfillan Bros Inc Broad band barretter mount
US2761110A (en) * 1953-12-07 1956-08-28 Entron Inc Solderless coaxial connector
US2785308A (en) * 1954-03-08 1957-03-12 Presto Recording Corp Frequency standard
US2810829A (en) * 1954-09-27 1957-10-22 Hewlett Packard Co Broad band coaxial crystal detector and line termination device
US3028560A (en) * 1955-01-28 1962-04-03 Sylvania Electric Prod Electrical crystal unit
US3029393A (en) * 1956-10-12 1962-04-10 Sperry Rand Corp Detector assembly holder and coupling device in a coaxial line resonator
US2997651A (en) * 1958-01-10 1961-08-22 Internat Telephone & Telegraph Pulse amplitude measuring circuit
US3002155A (en) * 1958-03-21 1961-09-26 Itt Microwave broadband crystal holder for cartridge type crystals
US3010072A (en) * 1958-11-20 1961-11-21 Research Corp Crystal detector assembly
US3118119A (en) * 1961-07-27 1964-01-14 Alford Andrew Radio frequency coaxial reducing section having short tapers, offset from each other, in inner and outer conductors
US3209284A (en) * 1963-06-05 1965-09-28 Charles O Hast Termination for strip transmission lines
US3447082A (en) * 1965-03-08 1969-05-27 Catharine E Calderhead Thermocouple milliwattmeter
US3278763A (en) * 1965-08-23 1966-10-11 Hewlett Packard Co Two diode balanced signal sampling apparatus
US3601765A (en) * 1969-12-04 1971-08-24 Us Air Force Connector coupling ring gap closure device
US3711794A (en) * 1971-10-21 1973-01-16 Gen Electric Surge suppression transmission means
US3996534A (en) * 1975-06-30 1976-12-07 Midwest Microwave, Inc. Coaxial microwave termination having rod-shaped resistive termination

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1093947A (en) * 1913-10-01 1914-04-21 Nat Electric Utilities Corp Unit and process of making the same.
US2273547A (en) * 1938-10-28 1942-02-17 Telefunken Gmbh Ohmic resistance for ultra-short waves
US2294881A (en) * 1939-08-03 1942-09-08 Internat Telephone & Radio Mfg High frequency impedance unit
US2414456A (en) * 1945-04-19 1947-01-21 Bell Telephone Labor Inc Electrical testing system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2857557A (en) * 1953-03-06 1958-10-21 Moser Glaser & Co Ag High voltage substation
GB2128827A (en) * 1980-10-20 1984-05-02 Philips Electronic Associated Microwave detector arrangement

Also Published As

Publication number Publication date
US2498335A (en) 1950-02-21

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