FR2425774A1 - DEVICE FOR AUTOMATIC SWITCHING OF DIRECTIONAL RADIO SYSTEMS OPERATING IN PARALLEL - Google Patents

DEVICE FOR AUTOMATIC SWITCHING OF DIRECTIONAL RADIO SYSTEMS OPERATING IN PARALLEL

Info

Publication number
FR2425774A1
FR2425774A1 FR7912506A FR7912506A FR2425774A1 FR 2425774 A1 FR2425774 A1 FR 2425774A1 FR 7912506 A FR7912506 A FR 7912506A FR 7912506 A FR7912506 A FR 7912506A FR 2425774 A1 FR2425774 A1 FR 2425774A1
Authority
FR
France
Prior art keywords
parallel
automatic switching
radio systems
systems operating
directional radio
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.)
Granted
Application number
FR7912506A
Other languages
French (fr)
Other versions
FR2425774B1 (en
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.)
Patelhold Patenverwertungs and Elektro-Holding AG
Original Assignee
Patelhold Patenverwertungs and Elektro-Holding AG
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 Patelhold Patenverwertungs and Elektro-Holding AG filed Critical Patelhold Patenverwertungs and Elektro-Holding AG
Publication of FR2425774A1 publication Critical patent/FR2425774A1/en
Application granted granted Critical
Publication of FR2425774B1 publication Critical patent/FR2425774B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0817—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection
    • H04B7/082—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection selecting best antenna path

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Radio Relay Systems (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Radio Transmission System (AREA)

Abstract

CE DISPOSITIF EST DU TYPE DE CEUX DANS LESQUELS ON UTILISE DES AMPLIFICATEURS LOGARITHMIQUES POUR EVALUER LA PROPORTION DE BRUIT AUX RECEPTEURS AFIN DE DETERMINER SI L'ON DOIT OU NON METTRE HORS CIRCUIT UN DES RECEPTEURS EN PARALLELE. DANS LE DISPOSITIF SELON L'INVENTION, LES AMPLIFICATEURS LOGARITHMIQUES 16 SONT DES CIRCUITS INTEGRES MONOLITHIQUES PLACES, POUR ASSURER LEUR CONCORDANCE THERMIQUE, SUR UNE MEME PLAQUETTE DE SILICIUM.THIS DEVICE IS THE TYPE OF THOSE IN WHICH LOGARITHMIC AMPLIFIERS ARE USED TO EVALUATE THE PROPORTION OF NOISE TO RECEIVERS IN ORDER TO DETERMINE WHETHER OR NOT ONE OF THE RECEIVERS SHOULD BE TURNED OFF IN PARALLEL. IN THE DEVICE ACCORDING TO THE INVENTION, THE LOGARITHMIC AMPLIFIERS 16 ARE MONOLITHIC INTEGRATED CIRCUITS PLACED, TO ENSURE THEIR THERMAL CONCORDANCE, ON A SAME SILICON PLATE.

FR7912506A 1978-05-11 1979-05-09 DEVICE FOR AUTOMATIC SWITCHING OF DIRECTIONAL RADIO SYSTEMS OPERATING IN PARALLEL Granted FR2425774A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH513078A CH630498A5 (en) 1978-05-11 1978-05-11 ARRANGEMENT FOR THE AUTOMATIC SWITCHING OF DIRECTIONAL RADIO SYSTEMS OPERATED IN PARALLEL.

Publications (2)

Publication Number Publication Date
FR2425774A1 true FR2425774A1 (en) 1979-12-07
FR2425774B1 FR2425774B1 (en) 1982-04-23

Family

ID=4288436

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7912506A Granted FR2425774A1 (en) 1978-05-11 1979-05-09 DEVICE FOR AUTOMATIC SWITCHING OF DIRECTIONAL RADIO SYSTEMS OPERATING IN PARALLEL

Country Status (7)

Country Link
CH (1) CH630498A5 (en)
DE (1) DE2824329C2 (en)
FR (1) FR2425774A1 (en)
GB (1) GB2020949B (en)
IT (1) IT1112747B (en)
NL (1) NL7903624A (en)
NO (1) NO791526L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0113291A2 (en) * 1982-12-28 1984-07-11 Thomson-Csf Speech interpolation method and apparatus in a digitized speech transmission system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55150627A (en) * 1979-05-14 1980-11-22 Nec Corp Signal synthesizing circuit
GB2096865B (en) * 1981-03-26 1984-12-12 Ferranti Ltd Diversity receivers

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028564A (en) * 1971-09-22 1977-06-07 Robert Bosch G.M.B.H. Compensated monolithic integrated current source

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4097815A (en) * 1975-04-09 1978-06-27 Indesit Industria Elettrodomestici Italiana S.P.A. Amplifying circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028564A (en) * 1971-09-22 1977-06-07 Robert Bosch G.M.B.H. Compensated monolithic integrated current source

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
EXBK/70 *
EXBK/77 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0113291A2 (en) * 1982-12-28 1984-07-11 Thomson-Csf Speech interpolation method and apparatus in a digitized speech transmission system
EP0113291A3 (en) * 1982-12-28 1984-08-08 Thomson-Csf Speech interpolation method and apparatus in a digitized speech transmission system

Also Published As

Publication number Publication date
FR2425774B1 (en) 1982-04-23
IT7922509A0 (en) 1979-05-09
IT1112747B (en) 1986-01-20
CH630498A5 (en) 1982-06-15
NL7903624A (en) 1979-11-13
NO791526L (en) 1979-11-13
GB2020949B (en) 1982-06-16
DE2824329C2 (en) 1987-04-30
DE2824329A1 (en) 1979-11-15
GB2020949A (en) 1979-11-21

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Legal Events

Date Code Title Description
ST Notification of lapse