GB754750A - Improvements in or relating to microwave amplifiers and to microwave radio relay apparatus - Google Patents

Improvements in or relating to microwave amplifiers and to microwave radio relay apparatus

Info

Publication number
GB754750A
GB754750A GB10805/54A GB1080554A GB754750A GB 754750 A GB754750 A GB 754750A GB 10805/54 A GB10805/54 A GB 10805/54A GB 1080554 A GB1080554 A GB 1080554A GB 754750 A GB754750 A GB 754750A
Authority
GB
United Kingdom
Prior art keywords
travelling
frequency
output
wave tube
tube
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
GB10805/54A
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.)
Toshiba Corp
Original Assignee
Tokyo Shibaura Electric 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 Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Publication of GB754750A publication Critical patent/GB754750A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Details Of Television Systems (AREA)

Abstract

754,750. Radio signaling; tube amplifiers. TOKYO SHIBAURA ELECTRIC CO., Ltd. April 13, 1954 [April 13, 1953], No. 10805/54. Classes 40 (5) and 40 (6). In an ultra high-frequency reflex amplifier, the signals are passed more than once through a travelling-wave tube to increase the effective gain, the signals being transposed between successive passages through the tube. The invention is described as applied to a radio relay, Fig. 2, signals of frequency f from aerial A passing through a band-pass filter 1 to travelling-wave tube 2 and thence through a further filter 1a to a mixer 3 fed with local oscillations from generator 4. The output at frequency f2 is passed through filter 5a to the input of travelling-wave tube 2 and the output passes through filters f2 to transmitting aerial B. In a modification, Fig. 3 (not shown), the process is repeated at a third frequency. It is stated that the output of a travelling-wave tube is substantially constant for inputs exceeding a critical value so that the output of the amplifier remains constant with varying inputs over a wide range of values (Fig. 7, not shown).
GB10805/54A 1953-04-13 1954-04-13 Improvements in or relating to microwave amplifiers and to microwave radio relay apparatus Expired GB754750A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP754750X 1953-04-13

Publications (1)

Publication Number Publication Date
GB754750A true GB754750A (en) 1956-08-15

Family

ID=13577349

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10805/54A Expired GB754750A (en) 1953-04-13 1954-04-13 Improvements in or relating to microwave amplifiers and to microwave radio relay apparatus

Country Status (1)

Country Link
GB (1) GB754750A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194110A (en) * 1986-07-14 1988-02-24 Era Patents Ltd Reflex microwave amplifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194110A (en) * 1986-07-14 1988-02-24 Era Patents Ltd Reflex microwave amplifier

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