GB535834A - Improvements in or relating to wide frequency band amplifier systems - Google Patents

Improvements in or relating to wide frequency band amplifier systems

Info

Publication number
GB535834A
GB535834A GB30920/39A GB3092039A GB535834A GB 535834 A GB535834 A GB 535834A GB 30920/39 A GB30920/39 A GB 30920/39A GB 3092039 A GB3092039 A GB 3092039A GB 535834 A GB535834 A GB 535834A
Authority
GB
United Kingdom
Prior art keywords
valves
transmission line
output
line
frequency band
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
GB30920/39A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB535834A publication Critical patent/GB535834A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/42—Modifications of amplifiers to extend the bandwidth
    • H03F1/48—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers
    • H03F1/50—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Microwave Amplifiers (AREA)

Abstract

535,834. Valve amplifying and modulating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Nov. 27, 1939, No. 30920. Convention date, Nov. 26, 1938. [Class 40 (v)] A transmitting amplifier or modulator for broad band (e.g. television) signals comprises two push-pull pairs of valves 1, 2 with their grids energized from an input transmission line TL at point a quarter of a wave length, or an odd multiple thereof, apart, and their anodes similarly energizing an output transmission line TL<SP>I</SP>. For each pair of valves the reduction of the impedances associated with the other pair compensates for the reactive effect of its associated impedances, and hence for side bands well displaced from the carrier the impedance associated with the valves appear more nearly reactive, and thus a broader frequency band can be handled. The output from an amplifier stage as shown can be directly connected to the grid circuits of a further such stage. Modulating potentials may be applied to either the grids or the anodes and carrier current applied through the line TL. The output can be connected to an aerial by a transmission line T<SP>1</SP>L<SP>1</SP> of half the characteristic impedance of the line TL<SP>1</SP>,
GB30920/39A 1938-11-26 1939-11-27 Improvements in or relating to wide frequency band amplifier systems Expired GB535834A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US242442A US2266197A (en) 1938-11-26 1938-11-26 Wide frequency band amplifier system

Publications (1)

Publication Number Publication Date
GB535834A true GB535834A (en) 1941-04-23

Family

ID=22914789

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30920/39A Expired GB535834A (en) 1938-11-26 1939-11-27 Improvements in or relating to wide frequency band amplifier systems

Country Status (2)

Country Link
US (1) US2266197A (en)
GB (1) GB535834A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2459260A (en) * 1943-08-23 1949-01-18 Rca Corp High-frequency electrical bonding apparatus for bonding wide layers of dielectric materials
US2485559A (en) * 1945-04-12 1949-10-25 Farnsworth Res Corp Ultra high frequency amplifier system
US2487212A (en) * 1946-06-19 1949-11-08 Zenith Radio Corp High efficiency modulator
US2744167A (en) * 1950-12-14 1956-05-01 Amy Aceves & King Inc Booster amplifier
GB735927A (en) * 1953-06-23 1955-08-31 Gen Electric Co Ltd Improvements in or relating to electric amplifier arrangements
GB781887A (en) * 1955-01-18 1957-08-28 Marconi Wireless Telegraph Co Improvements in or relating to valve amplifier circuits for phase-amplitude characteristic correction

Also Published As

Publication number Publication date
US2266197A (en) 1941-12-16

Similar Documents

Publication Publication Date Title
GB535834A (en) Improvements in or relating to wide frequency band amplifier systems
GB528179A (en) Improvements in or relating to thermionic valve amplifiers
GB525127A (en) Radio transmitters
GB406674A (en) Improvements in or relating to modulated carrier wave transmitting systems
GB568240A (en) Improvements in or relating to signal transmission systems
GB566844A (en) Distortion reduction on modulated amplifiers
GB632664A (en) Improvements in or relating to electron discharge tube circuit arrangements
GB548424A (en) Improvements in or relating to thermionic valve amplifiers
GB515106A (en) Improvements in or relating to modulator carrier wave transmitters
GB388213A (en) Improvements in or relating to modulated carrier wave signal transmitting and receiving systems
GB413267A (en) Improvements in or relating to radio and other modulated carrier wave transmission systems
GB398853A (en) Improvements in or relating to radio and other high frequency modulated carrier wave systems
GB547182A (en) Improvements in or relating to signal-modulating systems
GB592259A (en) Improvements in or relating to thermionic amplifiers and modulators
GB605427A (en) Improvements in electron discharge tube amplifiers
GB504247A (en) Improvements in or relating to electron discharge device amplifiers
GB471549A (en) Improvements in or relating to thermionic valve amplifiers
GB562392A (en) Improvements in or relating to negative feedback amplifiers
GB1236896A (en) Line amplifier for carrier transmission systems
GB461763A (en) Improvements in or relating to receiving circuits for very short waves and vacuum tubes therefor
GB513416A (en) Improvements in or relating to thermionic valve amplifying systems
GB369167A (en) Improvements in or relating to thermionic amplifiers and oscillation generators
GB524550A (en) Wide band amplifier sytems for electrical carrier-wave signals
GB420019A (en) Process and apparatus for the electric transmission of signals by high frequency waves
GB471423A (en) Improvements relating to thermionic valve circuits