GB1173616A - Microwave Absorption Device. - Google Patents

Microwave Absorption Device.

Info

Publication number
GB1173616A
GB1173616A GB57074/66A GB5707466A GB1173616A GB 1173616 A GB1173616 A GB 1173616A GB 57074/66 A GB57074/66 A GB 57074/66A GB 5707466 A GB5707466 A GB 5707466A GB 1173616 A GB1173616 A GB 1173616A
Authority
GB
United Kingdom
Prior art keywords
circular
toroid
dec
internal
transmission lines
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
GB57074/66A
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.)
IVARS GEORGE AKMENKALNS
International Business Machines Corp
Original Assignee
IVARS GEORGE AKMENKALNS
International Business Machines 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 IVARS GEORGE AKMENKALNS, International Business Machines Corp filed Critical IVARS GEORGE AKMENKALNS
Publication of GB1173616A publication Critical patent/GB1173616A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/24—Frequency- independent attenuators
    • H03H7/25—Frequency- independent attenuators comprising an element controlled by an electric or magnetic variable
    • H03H7/258—Frequency- independent attenuators comprising an element controlled by an electric or magnetic variable using a galvano-magnetic device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/10—Auxiliary devices for switching or interrupting
    • H01P1/11—Auxiliary devices for switching or interrupting by ferromagnetic devices

Landscapes

  • Soft Magnetic Materials (AREA)
  • Non-Reversible Transmitting Devices (AREA)
  • Gyroscopes (AREA)

Abstract

1,173,616. Attenuators. INTERNATIONAL BUSINESS MACHINES CORP. 20 Dec., 1966 [30 Dec., 1965], No. 57074/66. Addition to 1,171,119. Heading H1W. The toroidal gyromagnetic elements described in Specification 1,171,119 are provided with both internal and external microwave transmission lines. The cylindrical ferrite toroid 4 is remanently magnetized in a circular direction by means of a current pulse passed through conductor 10. Internal and external helical transmission lines 12, 24 are either coupled or isolated from each other according to whether the direction of circular polarization set up in the toroid by microwaves transmitted at the gyromagnetic resonance frequency is opposite to or the same as the direction of circular magnetization. Thus, the coupling between the helices may be varied by signals from source 13. A modification (Fig. 3, not shown) is described in which the conductors 16, 20 extend radially from the ends of the helix 12 through apertures in the ferrite toroid 4.
GB57074/66A 1965-12-30 1966-12-20 Microwave Absorption Device. Expired GB1173616A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US517629A US3312915A (en) 1965-12-30 1965-12-30 Coupled helical wave structure employing a remanently magnetized ferrite

Publications (1)

Publication Number Publication Date
GB1173616A true GB1173616A (en) 1969-12-10

Family

ID=24060568

Family Applications (1)

Application Number Title Priority Date Filing Date
GB57074/66A Expired GB1173616A (en) 1965-12-30 1966-12-20 Microwave Absorption Device.

Country Status (4)

Country Link
US (1) US3312915A (en)
DE (1) DE1541414A1 (en)
FR (1) FR1506089A (en)
GB (1) GB1173616A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2235339A (en) * 1989-08-15 1991-02-27 Racal Mesl Ltd Microwave resonators and microwave filters incorporating microwave resonators

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2994842A (en) * 1959-02-20 1961-08-01 Polytechnic Inst Brooklyn Coupled-coil wave circulator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2235339A (en) * 1989-08-15 1991-02-27 Racal Mesl Ltd Microwave resonators and microwave filters incorporating microwave resonators
GB2235339B (en) * 1989-08-15 1994-02-09 Racal Mesl Ltd Microwave resonators and microwave filters incorporating microwave resonators

Also Published As

Publication number Publication date
DE1541414A1 (en) 1969-10-16
US3312915A (en) 1967-04-04
FR1506089A (en) 1967-12-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee