GB1456423A - Termination for rf transmission line - Google Patents

Termination for rf transmission line

Info

Publication number
GB1456423A
GB1456423A GB1217774A GB1217774A GB1456423A GB 1456423 A GB1456423 A GB 1456423A GB 1217774 A GB1217774 A GB 1217774A GB 1217774 A GB1217774 A GB 1217774A GB 1456423 A GB1456423 A GB 1456423A
Authority
GB
United Kingdom
Prior art keywords
film
heat sink
termination
aluminium
housing
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
GB1217774A
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.)
Bird Electronic Corp
Original Assignee
Bird Electronic 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 Bird Electronic Corp filed Critical Bird Electronic Corp
Publication of GB1456423A publication Critical patent/GB1456423A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/24—Terminating devices
    • H01P1/26—Dissipative terminations
    • H01P1/266—Coaxial terminations

Abstract

1456423 High-frequency line terminations BIRD ELECTRONIC CORP 19 March 1974 [19 March 1973] 12177/74 Heading H1W A termination for a RF transmission line comprises a heat sink B, Fig. 1; a dissipation element comprising a flat resistive film 41, Fig. 4, connected to the transmission line and deposited on a dielectric substrate 40, thermally connected to the heat sink B; and a conductive member 50 in series with film 40 and having a generally exponential profile approaching film 40. The heat sink is of aluminium H-section, is closed by plates and has radial cooling fins 11. A connector 30 for a coaxial cable is mounted on the aluminium housing 20 of a termination A, mounted on the central web 4 of the heat sink B. Within the housing 20a substrate 40, which consists of a thermally-conducting dielectric such as beryllium oxide, is mounted, with a resistive film 41 deposited thereon. One end of film 41 is connected, by a spring contact 36, to the centre conductor of connector 30. The other is connected to the housing 20 and thence to a block 50 of, e.g. aluminium, of which the face opposite the film 41 has a generally exponential profile, which may be achieved by means of three flats 54, 55, 56 at stated angles to the film 41.
GB1217774A 1973-03-19 1974-03-19 Termination for rf transmission line Expired GB1456423A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US34278473A 1973-03-19 1973-03-19

Publications (1)

Publication Number Publication Date
GB1456423A true GB1456423A (en) 1976-11-24

Family

ID=23343263

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1217774A Expired GB1456423A (en) 1973-03-19 1974-03-19 Termination for rf transmission line

Country Status (5)

Country Link
US (1) US3790904A (en)
CA (1) CA984923A (en)
DE (1) DE2402025C2 (en)
FR (1) FR2222765B1 (en)
GB (1) GB1456423A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2633810A1 (en) * 1976-07-28 1978-02-02 Sihn Jr Kg Wilhelm COOLED TERMINATING RESISTOR FOR COAXIAL HIGH FREQUENCY LINES
JPS5760244Y2 (en) * 1977-10-13 1982-12-22
JPS5760243Y2 (en) * 1977-10-13 1982-12-22
US5047737A (en) * 1988-03-31 1991-09-10 Wiltron Company Directional coupler and termination for stripline and coaxial conductors
DE4238136C1 (en) * 1992-11-12 1994-02-17 Ant Nachrichtentech Waveguide absorber
US6016085A (en) * 1998-09-28 2000-01-18 Emc Technology Llc Flat cable load
US6326862B1 (en) * 1999-09-13 2001-12-04 Florida Rf Labs, Inc. Tuned reactance cavity electrical termination
US6509808B1 (en) 1999-09-17 2003-01-21 Lockhead Martin Energy Research High thermal conductivity lossy dielectric using a multi layer configuration
US7042305B2 (en) * 2002-12-20 2006-05-09 Com Dev Ltd. Transmission line termination
US9077284B2 (en) 2013-06-26 2015-07-07 Werlatone, Inc. Absorptive RF rectifier circuit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2556642A (en) * 1947-10-02 1951-06-12 Bird Electronic Corp High-frequency electrical device
FR1199085A (en) * 1958-06-11 1959-12-11 Geffroy & Cie Ferisol Ets Coaxial load resistance for high frequency
US3564464A (en) * 1967-08-21 1971-02-16 Marconi Co Canada Strip-line power dissipative device
US3621479A (en) * 1970-01-08 1971-11-16 Westinghouse Electric Corp Apparatus for dissipating wave energy
US3621478A (en) * 1970-04-13 1971-11-16 Bell Telephone Labor Inc Suspended substrate transmission lines having coupled center conductors

Also Published As

Publication number Publication date
US3790904A (en) 1974-02-05
FR2222765B1 (en) 1978-01-06
DE2402025C2 (en) 1985-06-20
FR2222765A1 (en) 1974-10-18
CA984923A (en) 1976-03-02
DE2402025A1 (en) 1974-10-03

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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