GB579073A - Improvements in or relating to attenuators for electric waves of very short length - Google Patents

Improvements in or relating to attenuators for electric waves of very short length

Info

Publication number
GB579073A
GB579073A GB16507/42A GB1650742A GB579073A GB 579073 A GB579073 A GB 579073A GB 16507/42 A GB16507/42 A GB 16507/42A GB 1650742 A GB1650742 A GB 1650742A GB 579073 A GB579073 A GB 579073A
Authority
GB
United Kingdom
Prior art keywords
wave guide
outer conductor
inner conductor
attenuators
attenuator
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
GB16507/42A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB16507/42A priority Critical patent/GB579073A/en
Priority to US544897A priority patent/US2427643A/en
Publication of GB579073A publication Critical patent/GB579073A/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
    • H01P1/22—Attenuating devices
    • H01P1/222—Waveguide attenuators

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)
  • Waveguides (AREA)
  • Non-Reversible Transmitting Devices (AREA)

Abstract

579,073. Coaxial line and wave guide attenuators. COLLARD, J. Nov. 21, 1942, No. 16507.. [Classes 40 (iii) and 40 (v)] An attenuator for high frequencies is in the form of a transmission line or wave guide including a high-resistance portion. For example, a wave guide may include a portion coated with resistance material. The device described in detail is a coaxial transmission line with a portion 11c of the inner conductor formed of resistance material tapped at 10 decibel intervals by metal rings which co-operate with spring fingers formed on a sleeve 16 which is preferably. #/2 in length and makes connection at its other end with a normal portion 11a of the inner conductor. The sleeve is carried by means of polystyrene insulation by a portion 12c of outer conductor which telescopes in a portion 12a. The portion 12c is carried by a block which is moved by a rack and pinion and has an extension surrounding the outer conductor 12b. Impedance-matching branch lines adjustable by pistons P1, P2 may be associated with the attenuator. These may be replaced by small screws threaded in the outer conductor and having capacity to the inner conductor of the attenuating line. The Specification indicates how the dimensions of the device are to be calculated.
GB16507/42A 1942-11-21 1942-11-21 Improvements in or relating to attenuators for electric waves of very short length Expired GB579073A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB16507/42A GB579073A (en) 1942-11-21 1942-11-21 Improvements in or relating to attenuators for electric waves of very short length
US544897A US2427643A (en) 1942-11-21 1944-07-14 Attenuator for electric waves of very short length

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16507/42A GB579073A (en) 1942-11-21 1942-11-21 Improvements in or relating to attenuators for electric waves of very short length

Publications (1)

Publication Number Publication Date
GB579073A true GB579073A (en) 1946-07-23

Family

ID=10078588

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16507/42A Expired GB579073A (en) 1942-11-21 1942-11-21 Improvements in or relating to attenuators for electric waves of very short length

Country Status (2)

Country Link
US (1) US2427643A (en)
GB (1) GB579073A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4301583C1 (en) * 1993-01-21 1994-07-28 Max Planck Gesellschaft Broadband high-power switchable attenuator section of coaxial line

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2510613A (en) * 1945-03-30 1950-06-06 Polytechnic Inst Brooklyn Variable attenuator
US2510614A (en) * 1945-06-21 1950-06-06 Polytechnic Inst Brooklyn Variable attenuator
US2782382A (en) * 1950-05-25 1957-02-19 Int Standard Electric Corp Attenuator for surface wave propagation
US2842748A (en) * 1955-06-07 1958-07-08 Polytechnic Inst Brooklyn Coaxial cable attenuator
US3453564A (en) * 1967-08-22 1969-07-01 Alfred Electronics Continuously variable high-frequency transmission line attenuator using variably biased microwave diodes and method therefor
US3786374A (en) * 1972-06-26 1974-01-15 Weinschel Eng Co Inc Variable resistive film attenuator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB432040A (en) * 1934-01-19 1935-07-19 Marconi Wireless Telegraph Co Improvements in or relating to filter circuit arrangements and resistance units for use therein
US2151157A (en) * 1936-10-31 1939-03-21 Bell Telephone Labor Inc Guided electromagnetic wave transmission
US2197122A (en) * 1937-06-18 1940-04-16 Bell Telephone Labor Inc Guided wave transmission
US2197123A (en) * 1937-06-18 1940-04-16 Bell Telephone Labor Inc Guided wave transmission
US2354809A (en) * 1942-09-18 1944-08-01 Rca Corp Transmission line load for high frequencies

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4301583C1 (en) * 1993-01-21 1994-07-28 Max Planck Gesellschaft Broadband high-power switchable attenuator section of coaxial line

Also Published As

Publication number Publication date
US2427643A (en) 1947-09-16

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