GB628737A - Improvements in or relating to radio-frequency attenuators - Google Patents

Improvements in or relating to radio-frequency attenuators

Info

Publication number
GB628737A
GB628737A GB2362045A GB2362045A GB628737A GB 628737 A GB628737 A GB 628737A GB 2362045 A GB2362045 A GB 2362045A GB 2362045 A GB2362045 A GB 2362045A GB 628737 A GB628737 A GB 628737A
Authority
GB
United Kingdom
Prior art keywords
resistances
casing
pair
lying
switch
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
GB2362045A
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.)
ADVANCE COMPONENTS Ltd
Original Assignee
ADVANCE COMPONENTS 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 ADVANCE COMPONENTS Ltd filed Critical ADVANCE COMPONENTS Ltd
Priority to GB2362045A priority Critical patent/GB628737A/en
Publication of GB628737A publication Critical patent/GB628737A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/24—Frequency- independent attenuators

Landscapes

  • Transmitters (AREA)

Abstract

628,737. Attenuators. ADVANCE COMPONENTS, Ltd., and HATFIELD, R. H. Sept. 13, 1945, No. 23620. [Class 40 (viii)] An adjustable attenuator comprising series and shunt resistances is so constructed that it presents a constant impedance at ultra-high frequencies, the resistances and the cavities in which they lie being designed as sections of coaxial transmission-lines. An unbalanced ladder network is formed of series resistances 11 lying in a part-circular groove 10a and shunt resistances 12 lying in radial grooves 10b and connected to the casing 10 by screws 16. One pair of terminals comprises the casing and a conductor 14, and the other the casing and a conductor connected to a switch-arm 13, Fig. 3, the latter pair constituting a coaxial elbow coupling 23, Fig. 1. The switch-arm comprises a pair of springs, one of which is bent over at 13a, Fig. 3, to engage the domed heads of conducting rods 18 embedded in insulation 19, such as polystyrene, and leading to the junctions of the resistances 11, 12. The other spring carries a dome 25 of insulating material which sticks into indexing recesses 24 containing plugs of oiled felt for lubrication. The cover-plate 17 is divided along a diameter to check errors due to eddy currents at the setting for maximum attenuation.
GB2362045A 1945-09-13 1945-09-13 Improvements in or relating to radio-frequency attenuators Expired GB628737A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2362045A GB628737A (en) 1945-09-13 1945-09-13 Improvements in or relating to radio-frequency attenuators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2362045A GB628737A (en) 1945-09-13 1945-09-13 Improvements in or relating to radio-frequency attenuators

Publications (1)

Publication Number Publication Date
GB628737A true GB628737A (en) 1949-09-05

Family

ID=10198597

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2362045A Expired GB628737A (en) 1945-09-13 1945-09-13 Improvements in or relating to radio-frequency attenuators

Country Status (1)

Country Link
GB (1) GB628737A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2760170A (en) * 1952-12-16 1956-08-21 Bell Telephone Labor Inc High frequency attenuator means
US3474356A (en) * 1965-10-11 1969-10-21 Wandel Uber Goltermann Eningen Damping network
US3513417A (en) * 1966-08-17 1970-05-19 E H Research Lab Inc Microwave attenuator with nondistributed type resistors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2760170A (en) * 1952-12-16 1956-08-21 Bell Telephone Labor Inc High frequency attenuator means
US3474356A (en) * 1965-10-11 1969-10-21 Wandel Uber Goltermann Eningen Damping network
US3513417A (en) * 1966-08-17 1970-05-19 E H Research Lab Inc Microwave attenuator with nondistributed type resistors

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