IT1198620B - Complesso con bobina,in specie per sistemi di comunicazione,con mezzi per guidare il flusso magnetico - Google Patents

Complesso con bobina,in specie per sistemi di comunicazione,con mezzi per guidare il flusso magnetico

Info

Publication number
IT1198620B
IT1198620B IT09448/83A IT944883A IT1198620B IT 1198620 B IT1198620 B IT 1198620B IT 09448/83 A IT09448/83 A IT 09448/83A IT 944883 A IT944883 A IT 944883A IT 1198620 B IT1198620 B IT 1198620B
Authority
IT
Italy
Prior art keywords
coil
complex
guide
communication systems
magnetic flow
Prior art date
Application number
IT09448/83A
Other languages
English (en)
Other versions
IT8309448A0 (it
Inventor
Vernon C Westcott
Original Assignee
Sensormatic Electronics Corp
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 Sensormatic Electronics Corp filed Critical Sensormatic Electronics Corp
Publication of IT8309448A0 publication Critical patent/IT8309448A0/it
Application granted granted Critical
Publication of IT1198620B publication Critical patent/IT1198620B/it

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
IT09448/83A 1982-06-10 1983-06-09 Complesso con bobina,in specie per sistemi di comunicazione,con mezzi per guidare il flusso magnetico IT1198620B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/386,886 US4486731A (en) 1982-06-10 1982-06-10 Coil assembly with flux directing means

Publications (2)

Publication Number Publication Date
IT8309448A0 IT8309448A0 (it) 1983-06-09
IT1198620B true IT1198620B (it) 1988-12-21

Family

ID=23527479

Family Applications (2)

Application Number Title Priority Date Filing Date
IT09448/83A IT1198620B (it) 1982-06-10 1983-06-09 Complesso con bobina,in specie per sistemi di comunicazione,con mezzi per guidare il flusso magnetico
IT1983A09448A IT8309448A1 (it) 1982-06-10 1983-06-09 Complesso con bobina, in specie per sistemi di comunicazione, con mezzi per guidare il flusso magnetico

Family Applications After (1)

Application Number Title Priority Date Filing Date
IT1983A09448A IT8309448A1 (it) 1982-06-10 1983-06-09 Complesso con bobina, in specie per sistemi di comunicazione, con mezzi per guidare il flusso magnetico

Country Status (13)

Country Link
US (1) US4486731A (it)
JP (1) JPS593905A (it)
BE (1) BE897015A (it)
BR (1) BR8303072A (it)
CA (1) CA1210828A (it)
DE (1) DE3321132A1 (it)
ES (1) ES8405191A1 (it)
FR (1) FR2528644B1 (it)
GB (1) GB2121652B (it)
IT (2) IT1198620B (it)
MX (1) MX152757A (it)
NL (1) NL8302053A (it)
SE (1) SE8303257L (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4659990A (en) * 1983-05-10 1987-04-21 Magnaflux Corporation Eddy current test system including a member of high permeability material effective to concentrate flux in a very small region of a part
US4745401A (en) * 1985-09-09 1988-05-17 Minnesota Mining And Manufacturing Company RF reactivatable marker for electronic article surveillance system
US4736196A (en) * 1986-11-18 1988-04-05 Cost-Effective Monitoring Systems, Co. Electronic monitoring system
WO1989007347A1 (en) * 1988-02-04 1989-08-10 Uniscan Ltd. Magnetic field concentrator
JP3966556B2 (ja) * 1995-05-30 2007-08-29 センサーマティック・エレクトロニクス・コーポレーション 改良された呼びかけ磁界分布を提供するためのｅａｓ装置アンテナ構造
TW531976B (en) * 2001-01-11 2003-05-11 Hanex Co Ltd Communication apparatus and installing structure, manufacturing method and communication method
DE10149126A1 (de) * 2001-10-05 2003-04-10 Flexchip Ag Einrichtung zum Abschirmen eines Transponders, Verfahren zum Herstellen einer entsprechenden Abschirmung, sowie Transponder mit Abschirmung

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2329634A (en) * 1939-10-06 1943-09-14 Jr Eugene F Mcdonald Radio apparatus
GB552778A (en) * 1940-11-29 1943-04-23 British Thomson Houston Co Ltd Improvements in and relating to electric induction apparatus
US2669528A (en) * 1950-05-11 1954-02-16 Avco Mfg Corp Process of increasing the inductance of a loop antenna
GB755756A (en) * 1953-03-17 1956-08-29 Philips Nv Improvements in or relating to radio receivers
GB872050A (en) * 1957-01-19 1961-07-05 Emi Ltd Improvements in or relating to inductances suitable for use in electrical circuits having conductors adhering to insulating supports
NL130506C (it) * 1959-02-27
DE1282744B (de) * 1965-07-02 1968-11-14 Csf Empfangs-Rahmenantenne
US3448440A (en) * 1965-12-17 1969-06-03 Wiegand Electronics Co Inc Interceptor transformer proximity key
GB1128885A (en) * 1966-02-24 1968-10-02 Matsushita Electric Ind Co Ltd Improvements in and relating to high frequency apparatus
US3778836A (en) * 1966-12-27 1973-12-11 T Tanaka Magnetic antenna having a block or circuit components therein
US3521280A (en) * 1969-01-16 1970-07-21 Gen Res Corp Coded labels
US3624311A (en) * 1969-01-16 1971-11-30 Advance Data Systems Corp Card handler having rotatable magnetic head and card-clamping means carried by housing assembly
GB1307985A (en) * 1969-04-18 1973-02-21 Sybrook Electronics Ltd Inductive transducers
US3823403A (en) * 1971-06-09 1974-07-09 Univ Ohio State Res Found Multiturn loop antenna
JPS54128653A (en) * 1978-03-30 1979-10-05 Nippon Gakki Seizo Kk Antenna unit for receiver

Also Published As

Publication number Publication date
DE3321132A1 (de) 1983-12-15
JPS593905A (ja) 1984-01-10
CA1210828A (en) 1986-09-02
BR8303072A (pt) 1984-01-31
ES523112A0 (es) 1984-05-16
IT8309448A1 (it) 1984-12-09
GB2121652A (en) 1983-12-21
GB2121652B (en) 1986-03-26
ES8405191A1 (es) 1984-05-16
BE897015A (fr) 1983-10-03
MX152757A (es) 1985-11-07
SE8303257D0 (sv) 1983-06-09
FR2528644A1 (fr) 1983-12-16
NL8302053A (nl) 1984-01-02
DE3321132C2 (it) 1993-01-28
SE8303257L (sv) 1983-12-11
US4486731A (en) 1984-12-04
FR2528644B1 (fr) 1987-11-20
IT8309448A0 (it) 1983-06-09
GB8313752D0 (en) 1983-06-22

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