NO905170L - Telefonsett beskyttet mot radiofrekvens-forstyrrelser. - Google Patents

Telefonsett beskyttet mot radiofrekvens-forstyrrelser.

Info

Publication number
NO905170L
NO905170L NO90905170A NO905170A NO905170L NO 905170 L NO905170 L NO 905170L NO 90905170 A NO90905170 A NO 90905170A NO 905170 A NO905170 A NO 905170A NO 905170 L NO905170 L NO 905170L
Authority
NO
Norway
Prior art keywords
radio frequency
protected
ket
phone
frequency interferences
Prior art date
Application number
NO90905170A
Other languages
English (en)
Other versions
NO905170D0 (no
Inventor
Mario Covini
Original Assignee
Sits Soc It Telecom Siemens
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 Sits Soc It Telecom Siemens filed Critical Sits Soc It Telecom Siemens
Publication of NO905170D0 publication Critical patent/NO905170D0/no
Publication of NO905170L publication Critical patent/NO905170L/no

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets

Abstract

Elektronisk telefonapparat beskyttet mot radlofrekvens- forstyrrelser hvor komponentene er delt l to blokker, idet en blokk (CS1) er følsom for radiofrekvens og en blokk (CS2) er ufølsom for radiofrekvens. Forbindel- sene mellom de to blokkene (CS1, CS2) er så få av antall som mulig. Komponentene følsomme for radiofre- kvens er fullstendig anordnet kompakt og skjermet Innbefattende også tastaturet. Mellom de to blokkene (CS1, CS2) er anbragt filtre (FL, FM) av en betydelig stor størrelse på grunn av at de andre komponentene er utført i en kompakt form.
NO90905170A 1989-11-30 1990-11-29 Telefonsett beskyttet mot radiofrekvens-forstyrrelser. NO905170L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT02254989A IT1238304B (it) 1989-11-30 1989-11-30 Apparecchio telefonico elettronico protetto contro i disturbi a radiofrequenza

Publications (2)

Publication Number Publication Date
NO905170D0 NO905170D0 (no) 1990-11-29
NO905170L true NO905170L (no) 1991-05-31

Family

ID=11197720

Family Applications (1)

Application Number Title Priority Date Filing Date
NO90905170A NO905170L (no) 1989-11-30 1990-11-29 Telefonsett beskyttet mot radiofrekvens-forstyrrelser.

Country Status (4)

Country Link
EP (1) EP0430353A3 (no)
IT (1) IT1238304B (no)
NO (1) NO905170L (no)
ZA (1) ZA909605B (no)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4267528A (en) * 1979-05-11 1981-05-12 Rca Corporation Radio frequency interference suppression apparatus
JPS5943659A (ja) * 1982-09-04 1984-03-10 Nippon Telegr & Teleph Corp <Ntt> 電話機への電波混入防止方法
JPS60250699A (ja) * 1984-05-25 1985-12-11 富士通株式会社 高周波モジュ−ルの接続構造
JPS61292450A (ja) * 1985-06-19 1986-12-23 Naomitsu Konomura 携帯電話
US4717990A (en) * 1986-05-30 1988-01-05 Motorola, Inc. Double-shielded housing for RF circuitry
EP0262576A3 (de) * 1986-09-26 1990-08-22 Siemens Aktiengesellschaft Funksendeempfänger der elektrischen Nachrichtentechnik
JPS6380896U (no) * 1986-11-17 1988-05-27
US4717989A (en) * 1987-03-30 1988-01-05 Motorola Inc. Heat sink, EMI shield and controller module assembly for a portable radio transceiver
DE8705863U1 (no) * 1987-04-22 1987-08-13 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
DE3717009A1 (de) * 1987-05-21 1988-12-15 Philips Patentverwaltung Funkgeraet fuer eine mobilfunkanlage
JPH01157135A (ja) * 1987-12-14 1989-06-20 Nippon Telegr & Teleph Corp <Ntt> 回路への電波障害防止方法

Also Published As

Publication number Publication date
IT8922549A1 (it) 1991-05-30
EP0430353A2 (en) 1991-06-05
IT1238304B (it) 1993-07-12
EP0430353A3 (en) 1992-09-23
IT8922549A0 (it) 1989-11-30
ZA909605B (en) 1991-10-30
NO905170D0 (no) 1990-11-29

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