AU8642375A - Automatic aerial attenuator - Google Patents

Automatic aerial attenuator

Info

Publication number
AU8642375A
AU8642375A AU86423/75A AU8642375A AU8642375A AU 8642375 A AU8642375 A AU 8642375A AU 86423/75 A AU86423/75 A AU 86423/75A AU 8642375 A AU8642375 A AU 8642375A AU 8642375 A AU8642375 A AU 8642375A
Authority
AU
Australia
Prior art keywords
attenuator
automatic aerial
aerial
automatic
aerial attenuator
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
AU86423/75A
Other languages
English (en)
Inventor
Peter Edward Chadwick
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.)
Decca Ltd
Original Assignee
Decca 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 Decca Ltd filed Critical Decca Ltd
Publication of AU8642375A publication Critical patent/AU8642375A/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
    • H04B7/02—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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/26—Measuring noise figure; Measuring signal-to-noise ratio
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Noise Elimination (AREA)
AU86423/75A 1974-11-07 1975-11-07 Automatic aerial attenuator Expired AU8642375A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4817174 1974-11-07

Publications (1)

Publication Number Publication Date
AU8642375A true AU8642375A (en) 1977-05-12

Family

ID=10447647

Family Applications (1)

Application Number Title Priority Date Filing Date
AU86423/75A Expired AU8642375A (en) 1974-11-07 1975-11-07 Automatic aerial attenuator

Country Status (5)

Country Link
US (1) US4039953A (US20110009641A1-20110113-C00116.png)
AU (1) AU8642375A (US20110009641A1-20110113-C00116.png)
DE (1) DE2550176A1 (US20110009641A1-20110113-C00116.png)
FR (1) FR2290797A1 (US20110009641A1-20110113-C00116.png)
SE (1) SE7512401L (US20110009641A1-20110113-C00116.png)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4155041A (en) * 1976-05-13 1979-05-15 Burns Richard C System for reducing noise transients
DE2812954A1 (de) * 1978-03-23 1979-10-04 Rohde & Schwarz Einrichtung zum verhindern einer auswertung von stoersignalen bei einem insbesondere registrierenden ueberwachungsempfaenger mit automatischem suchlauf
US4259742A (en) * 1978-11-06 1981-03-31 Burns Richard C Electronic switching system for reducing noise transients
US4363138A (en) * 1978-11-27 1982-12-07 Trw Inc. Signal presence detector and method
FR2490428B1 (fr) * 1980-09-16 1986-04-18 Thomson Csf Dispositif de recherche de la frequence d'accord d'un recepteur radioelectrique a modulation de frequence
US4395772A (en) * 1981-04-30 1983-07-26 Bell Telephone Laboratories, Incorporated Line protection switch controller
US4417348A (en) * 1981-04-30 1983-11-22 Bell Telephone Laboratories, Incorporated Errorless line protection switcher
FR2514591B1 (fr) * 1981-10-09 1986-10-10 Thomson Csf Dispositif de reduction du taux de fausses alarmes et recepteur de surveillance comportant un tel dispositif
US4479252A (en) * 1981-10-09 1984-10-23 Thomson-Csf Device for reduction of the false alarm ratio and monitor receiver comprising such a device of this nature
DE3447282A1 (de) * 1984-12-24 1986-07-10 Telefunken electronic GmbH, 7100 Heilbronn Funkempfaenger
DE3447284A1 (de) * 1984-12-24 1986-07-10 Telefunken electronic GmbH, 7100 Heilbronn Funkempfaenger
US4837856A (en) * 1987-05-04 1989-06-06 Glista Jr Andrew S Fault-tolerant fiber optic coupler/repeater for use in high speed data transmission and the like
US5020152A (en) * 1987-05-04 1991-05-28 Glista Jr Andrew S Fault tolerant-fiber optic coupler/repeater for use in high speed data transmission and the like
ES2081332T3 (es) * 1989-10-27 1996-03-01 Alcatel Italia Sistema para generar criterios de conmutacion y para ecualizar adaptativamente en un espectro de datos.
DE19829500A1 (de) 1998-07-02 2000-01-13 Thomson Brandt Gmbh Verfahren zur Verbesserung des Nutzsignals in einer Funkempfangseinheit
US8254869B2 (en) * 2009-02-19 2012-08-28 Chrysler Group Llc Smart antenna module

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769591A (en) * 1956-11-14 1973-10-30 Gilfillan S Corp Frequency selective pulse receiver
US3206679A (en) * 1963-01-10 1965-09-14 Being Company Diversity combining system employing differential sampling
US3622891A (en) * 1969-03-28 1971-11-23 Motorola Inc Radio receiver with automatic control of attenuation for reduction of intermodulation
US3953802A (en) * 1974-06-06 1976-04-27 Edmac Associates Inc. Adjacent channel rejector

Also Published As

Publication number Publication date
FR2290797A1 (fr) 1976-06-04
FR2290797B1 (US20110009641A1-20110113-C00116.png) 1978-08-18
SE7512401L (sv) 1976-05-10
DE2550176A1 (de) 1976-05-13
US4039953A (en) 1977-08-02

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