GB644161A - Improvements in apparatus for balancing electric transmission lines - Google Patents

Improvements in apparatus for balancing electric transmission lines

Info

Publication number
GB644161A
GB644161A GB5879/48A GB587948A GB644161A GB 644161 A GB644161 A GB 644161A GB 5879/48 A GB5879/48 A GB 5879/48A GB 587948 A GB587948 A GB 587948A GB 644161 A GB644161 A GB 644161A
Authority
GB
United Kingdom
Prior art keywords
line
hollow
coaxial
length
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
GB5879/48A
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.)
US Department of Commerce
Original Assignee
US Department of Commerce
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 US Department of Commerce filed Critical US Department of Commerce
Publication of GB644161A publication Critical patent/GB644161A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
    • H01P5/10—Coupling devices of the waveguide type for linking dissimilar lines or devices for coupling balanced lines or devices with unbalanced lines or devices

Landscapes

  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

644,161. Impedance transformers. DEPARTMENT OF COMMERCE, DIRECTOR OF THE OFFICE OF TECHNICAL SERVICES OF. Feb. 27, 1948, No. 5979. Convention date, Dec. 10, 1945. [Class 40 (viii)] Apparatus for transforming an unbalanced transmission line into a balanced one comprises a length 16 of coaxial line and a hollow pipe-line 13 parallel thereto and substantially equal in length, a shorting member 14 connecting one end of the hollow line to the outer member of the coaxial and a further member 15 connecting the inner to the other end of the hollow line, while the whole is enclosed in a shield 10. In the arrangement shown, a supply line 12 is connected to the transformer and a dipole aerial 17 and 18 is connected to the end of the line 13 and the outer of line 16. The lengths of the transforming device and those of dipole sections 17 and 18 differ slightly and in opposite senses from a quarter of a wavelength in the operating band of the apparatus.
GB5879/48A 1945-12-10 1948-02-27 Improvements in apparatus for balancing electric transmission lines Expired GB644161A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US644161XA 1945-12-10 1945-12-10

Publications (1)

Publication Number Publication Date
GB644161A true GB644161A (en) 1950-10-04

Family

ID=22055832

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5879/48A Expired GB644161A (en) 1945-12-10 1948-02-27 Improvements in apparatus for balancing electric transmission lines

Country Status (1)

Country Link
GB (1) GB644161A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2046880A1 (en) * 1969-06-18 1971-03-12 Kathrein Werke Anton
EP0430489A2 (en) * 1989-11-17 1991-06-05 The Marconi Company Limited Broadband balun

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2046880A1 (en) * 1969-06-18 1971-03-12 Kathrein Werke Anton
EP0430489A2 (en) * 1989-11-17 1991-06-05 The Marconi Company Limited Broadband balun
EP0430489A3 (en) * 1989-11-17 1992-04-01 The Marconi Company Limited Broadband balun

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