GB453538A - Improvements in or relating to artificial lines for use on radio and other high frequencies - Google Patents

Improvements in or relating to artificial lines for use on radio and other high frequencies

Info

Publication number
GB453538A
GB453538A GB8275/35A GB827535A GB453538A GB 453538 A GB453538 A GB 453538A GB 8275/35 A GB8275/35 A GB 8275/35A GB 827535 A GB827535 A GB 827535A GB 453538 A GB453538 A GB 453538A
Authority
GB
United Kingdom
Prior art keywords
coil
cylinder
split
distributed capacity
capacity
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
GB8275/35A
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.)
ROBERT FRANCIS O NEILL
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
ROBERT FRANCIS O NEILL
Marconis Wireless Telegraph Co Ltd
Marconi Co 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 ROBERT FRANCIS O NEILL, Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical ROBERT FRANCIS O NEILL
Priority to GB8275/35A priority Critical patent/GB453538A/en
Priority to US69098A priority patent/US2158493A/en
Publication of GB453538A publication Critical patent/GB453538A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H5/00—One-port networks comprising only passive electrical elements as network components
    • H03H5/003—One-port networks comprising only passive electrical elements as network components comprising distributed impedance elements together with lumped impedance elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/04—Fixed inductances of the signal type  with magnetic core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
    • H01F21/10—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by means of a movable shield

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

453,538. Impedance networks. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, and BRAILSFORD, J. D., 14, Bolan Street, Battersea, both in London, and O'NEILL, R. F., Lindorel, Fourth Avenue, Chelmsford. March 16, 1935, No. 8275. [Classes 40 (iii) and 40 (v)] An artificial line, particularly for loading the anode circuits of frequency-changers, comprises an inductive coil 1, Fig. 2, and a metal member 4, which provides the major portion of the distributed capacity of the coil 1, with means for varying the inductance per unit length and /or the distributed capacity per unit length of the coil. The cylinder 4 is split at 4a and a screw 8 serves to increase the diameter of the cylinder 4. Alternatively, the split cylinder 4 has turned-up ends 4b, Fig. 3, and the coil has tapered end-pieces 14, 15, adapted to be relatively moved in an axial direction bv a screw-knob 17 so that the split cylinder can be expanded or contracted. In these two modifications, the distributed capacity is varied. In Fig. 6, the coil 1 is mounted rigidly with a split cylinder 25 to slide on a tube 18 having an iron-dust core 21 and an embracing di-electric cylinder 22, so that axial movement of the coil varies both the inductance and the capacity of the coil. Specification 450,520 is referred to.
GB8275/35A 1935-03-16 1935-03-16 Improvements in or relating to artificial lines for use on radio and other high frequencies Expired GB453538A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB8275/35A GB453538A (en) 1935-03-16 1935-03-16 Improvements in or relating to artificial lines for use on radio and other high frequencies
US69098A US2158493A (en) 1935-03-16 1936-03-16 Artificial line for use on radio and other high frequencies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8275/35A GB453538A (en) 1935-03-16 1935-03-16 Improvements in or relating to artificial lines for use on radio and other high frequencies

Publications (1)

Publication Number Publication Date
GB453538A true GB453538A (en) 1936-09-14

Family

ID=9849365

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8275/35A Expired GB453538A (en) 1935-03-16 1935-03-16 Improvements in or relating to artificial lines for use on radio and other high frequencies

Country Status (2)

Country Link
US (1) US2158493A (en)
GB (1) GB453538A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741788C (en) * 1939-01-20 1943-11-17 Telefunken Gmbh Circuit arrangement for phase and damping equalization of electrical transmission systems
DE748787C (en) * 1939-01-18 1944-11-08 Runtime coil switched as a quadrupole
US7714683B2 (en) 2006-10-10 2010-05-11 Nec Tokin Corporation Inductance device, filter device comprising the same, and noise filter comprising the same

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2503955A (en) * 1942-09-24 1950-04-11 Rca Corp Convolved transmission line
NL72302C (en) * 1942-12-17
US2420559A (en) * 1943-07-26 1947-05-13 Gen Electric Artificial transmission line
US2491681A (en) * 1944-12-11 1949-12-20 Measurements Corp Electric filter
US2496321A (en) * 1945-10-29 1950-02-07 Motorola Inc Tunable resonant system
US2616966A (en) * 1946-01-11 1952-11-04 Andrew V Haeff Variable cavity resonator
US2659845A (en) * 1950-02-13 1953-11-17 Wayne Kerr Lab Ltd High-frequency alternating current transformer
US2619537A (en) * 1950-07-28 1952-11-25 Rca Corp High-frequency delay device
US3307121A (en) * 1964-08-28 1967-02-28 Motorola Inc Helical resonator with coil, adjustable conducting plate and shield forming a series resonant circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748787C (en) * 1939-01-18 1944-11-08 Runtime coil switched as a quadrupole
DE741788C (en) * 1939-01-20 1943-11-17 Telefunken Gmbh Circuit arrangement for phase and damping equalization of electrical transmission systems
US7714683B2 (en) 2006-10-10 2010-05-11 Nec Tokin Corporation Inductance device, filter device comprising the same, and noise filter comprising the same
EP1912329B1 (en) * 2006-10-10 2012-05-02 NEC TOKIN Corporation Inductance device and noise filter comprising the same

Also Published As

Publication number Publication date
US2158493A (en) 1939-05-16

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