GB958049A - Improvements in transmission line transformers - Google Patents

Improvements in transmission line transformers

Info

Publication number
GB958049A
GB958049A GB28110/61A GB2811061A GB958049A GB 958049 A GB958049 A GB 958049A GB 28110/61 A GB28110/61 A GB 28110/61A GB 2811061 A GB2811061 A GB 2811061A GB 958049 A GB958049 A GB 958049A
Authority
GB
United Kingdom
Prior art keywords
voltage
terminals
ratios
output
section
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
GB28110/61A
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.)
Marelli Lenkurt SpA
Original Assignee
Marelli Lenkurt SpA
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 Marelli Lenkurt SpA filed Critical Marelli Lenkurt SpA
Publication of GB958049A publication Critical patent/GB958049A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F19/00—Fixed transformers or mutual inductances of the signal type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F19/00—Fixed transformers or mutual inductances of the signal type
    • H01F19/04—Transformers or mutual inductances suitable for handling frequencies considerably beyond the audio range
    • H01F19/06—Broad-band transformers, e.g. suitable for handling frequencies well down into the audio range

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

958,049. Transformers; transforming transmission-line impedances. MARELLI-LENKURT S.p.A. Aug. 2, 1961 [Aug. 3, 1960], No. 28110/61. Headings HIT and H1W. A transmission line transformer passing a wide band of frequencies comprises n-l bifilar line sections wound on the same core wherein n represents the maximum voltage transformation ratio, said sections having the same number of turns and being connected so that the input voltage of any section is added in phase to the output voltage of the same section, and the output voltage of each section is applied as the input voltage of the next section, the possible transformation ratios being r : s where r and s are whole numbers between 1 and n. Fig. 4 represents a transformer having four bifilar line sections wound on a core N. If a voltage E1 is applied between terminals 1 and 2 then a voltage of 2E1 is obtainable from terminals 1 and 4. Ratios 1 : 3, 1 : 4, up to a maximum ratio 1 : 5 are available if output is obtained between terminals 1 and 8, 1 and 12, 1 and 16 respectively. Many other transformation ratios are available depending on which terminals the signal voltage is applied to or the output tapped from. For example, if a voltage is applied to terminals 1 and 4, or between 1 and 8, or between 1 and 12 and the output taken from terminals 1 and 16 then ratios 2 : 5, 3 : 5, 4 : 5 are obtainable. Ratios 2 : 3 and 3 : 4 can be obtained if the input terminals are respectively 1 and 4, 1 and 8. The above voltage ratios apply only if the transformer is matched and if the whole winding is short compared with the wavelength of E1.
GB28110/61A 1960-08-03 1961-08-02 Improvements in transmission line transformers Expired GB958049A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1386960 1960-08-03

Publications (1)

Publication Number Publication Date
GB958049A true GB958049A (en) 1964-05-13

Family

ID=11144705

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28110/61A Expired GB958049A (en) 1960-08-03 1961-08-02 Improvements in transmission line transformers

Country Status (2)

Country Link
US (1) US3226665A (en)
GB (1) GB958049A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1440304A (en) * 1974-11-29 1976-06-23 Mullard Ltd Transmission line pulse transformers
DE2921219C2 (en) * 1979-05-25 1986-12-04 Blaupunkt-Werke Gmbh, 3200 Hildesheim RF receiver stage for televisions

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1762775A (en) * 1928-09-19 1930-06-10 Bell Telephone Labor Inc Inductance device
DE665834C (en) * 1929-12-14 1938-10-08 Koch & Sterzel Akt Ges Process for the production of a high-voltage coil, especially for transformers, transducers or the like.
US2550891A (en) * 1949-08-31 1951-05-01 Rca Corp Bifilar inductor
US2654836A (en) * 1952-04-24 1953-10-06 Rca Corp Converter circuit
US3037175A (en) * 1958-05-12 1962-05-29 Bell Telephone Labor Inc Broadband transformers
US3114120A (en) * 1959-07-09 1963-12-10 Westinghouse Electric Corp Radio frequency voltage balancing device

Also Published As

Publication number Publication date
US3226665A (en) 1965-12-28

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