GB633620A - Improvements in or relating to systems of transmitting signals by means of electro-magnetic waves - Google Patents

Improvements in or relating to systems of transmitting signals by means of electro-magnetic waves

Info

Publication number
GB633620A
GB633620A GB2989645A GB2989645A GB633620A GB 633620 A GB633620 A GB 633620A GB 2989645 A GB2989645 A GB 2989645A GB 2989645 A GB2989645 A GB 2989645A GB 633620 A GB633620 A GB 633620A
Authority
GB
United Kingdom
Prior art keywords
pulse
phase
frequency
quench
channel
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
GB2989645A
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.)
Pateihold Patentverwertungs &
Original Assignee
Pateihold Patentverwertungs &
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 Pateihold Patentverwertungs & filed Critical Pateihold Patentverwertungs &
Publication of GB633620A publication Critical patent/GB633620A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D11/00—Super-regenerative demodulator circuits
    • H03D11/02—Super-regenerative demodulator circuits for amplitude-modulated oscillations
    • 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
    • H04B7/17—Ground-based stations employing pulse modulation, e.g. pulse code modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/10—Arrangements for reducing cross-talk between channels

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Transmitters (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

633,620. Multiplex pulse signalling; radiolocation. PATELHOLD PATENTVERWERTUNGS- & ELEKTROHOLDING AKT.-GES. Nov. 9, 1945, No. 29896. Convention date, Nov. 13, 1944. [Classes 40 (v) and 40 (vii)] In a super-regenerative radio receiver for receiving one channel of an interlaced channel pulse multiplex system, the quench frequency being integrally related to the transmitter pulse train recurrence frequency, a switching device controls the back coupling periodically in such a manner that in the non-back-coupled phase the back coupling is completely cut off. As shown, the receiver oscillatory circuit K feeds the amplifier and demodulator R, the amplified H.F. signal being fed back to circuit K through a switching device U controlled by the quench generator P. The latter is synchronized to the channel pulse recurrence frequency by a pulse output from circuit R. The phase of generator P may be adjusted so that the incoming pulse coincides with the beginning of the build-up period of the oscillatory circuit. The output of the oscillatory circuit may be fed to the demodulator through a valve which is also controlled by the quench generator in such phase as to pass the signal at the end of the build-up period. The invention is applicable to pulses of frequency and phase-modulated radio frequency. Specification 585,613 is referred to. The Specification as open to inspection under Sect. 91 comprises' also an arrangement in which all the channel pulses are received by a single super-regenerative receiver and subsequently separated. The arrangement may also be used at a relay station, interference between the received and retransmitted pulses being avoided by a retardation element, a change of radio frequency or by a suitable disposition of aerials. When used in a radar system, the quench frequency may be obtained from the transmitter pulse recurrence frequency and its phase adjusted to give maximum sensitivity. This phase adjuster gives a rough indication of pulse transit time, but a further phase comparator is provided for accurate measurements. This subject-matter does not appear in the Specification as accepted.
GB2989645A 1944-11-13 1945-11-09 Improvements in or relating to systems of transmitting signals by means of electro-magnetic waves Expired GB633620A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH246144T 1944-11-13

Publications (1)

Publication Number Publication Date
GB633620A true GB633620A (en) 1949-12-19

Family

ID=4465355

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2989645A Expired GB633620A (en) 1944-11-13 1945-11-09 Improvements in or relating to systems of transmitting signals by means of electro-magnetic waves

Country Status (4)

Country Link
CH (1) CH246144A (en)
DE (1) DE844178C (en)
FR (1) FR916461A (en)
GB (1) GB633620A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2257923A1 (en) * 2004-05-24 2006-08-01 Universitat Politecnica De Catalunya Super regenerative receiver used in high-speed transmission services, uses inter-relation of bits to generate frequency control signal for extraction cycle generator which operates in synchronous with received bit pulses

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19847467A1 (en) 1998-10-15 2000-04-20 Topack Verpacktech Gmbh Packing machine assembly, especially for cigarette packaging, with integrated circuit cabinets has common removable boundary wall separating machine assembly and circuit cabinet interiors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2257923A1 (en) * 2004-05-24 2006-08-01 Universitat Politecnica De Catalunya Super regenerative receiver used in high-speed transmission services, uses inter-relation of bits to generate frequency control signal for extraction cycle generator which operates in synchronous with received bit pulses

Also Published As

Publication number Publication date
DE844178C (en) 1952-07-17
FR916461A (en) 1946-12-06
CH246144A (en) 1946-12-15

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