[go: up one dir, main page]

GB480434A - Improvements in or relating to short wave signalling systems - Google Patents

Improvements in or relating to short wave signalling systems

Info

Publication number
GB480434A
GB480434A GB1699936A GB1699936A GB480434A GB 480434 A GB480434 A GB 480434A GB 1699936 A GB1699936 A GB 1699936A GB 1699936 A GB1699936 A GB 1699936A GB 480434 A GB480434 A GB 480434A
Authority
GB
United Kingdom
Prior art keywords
line
frequencies
section
relating
impedance
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
GB1699936A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1699936A priority Critical patent/GB480434A/en
Publication of GB480434A publication Critical patent/GB480434A/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
    • H01P5/02—Coupling devices of the waveguide type with invariable factor of coupling

Landscapes

  • Transmitters (AREA)

Abstract

480,434. Wireless signalling. CORK, E. C., and PAWSEY. J. L. June 18, 1936, No. 16999. [Class 40 (v)] A line is matched to high-frequency apparatus responsive to a range of frequencies, by means of a section of line of selected length and impedance. A coaxial feeder 1, 2, of characteristic impedance Z<1>o is connected to a load. such as an aerial at A, through the additional section of line BA whose electrical length # and characteristic impedance Zo are so chosen that its input impedance at B simulates Z<1>o to a high degree of approximation over the range of frequencies handled by the aerial. The matching is made correct at two spaced frequencies within the band by proportioning the section BA according to equations derived in the Specification. Specifications 282,905, [Class 40 (v)], and 393,490 are referred to.
GB1699936A 1936-06-18 1936-06-18 Improvements in or relating to short wave signalling systems Expired GB480434A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1699936A GB480434A (en) 1936-06-18 1936-06-18 Improvements in or relating to short wave signalling systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1699936A GB480434A (en) 1936-06-18 1936-06-18 Improvements in or relating to short wave signalling systems

Publications (1)

Publication Number Publication Date
GB480434A true GB480434A (en) 1938-02-18

Family

ID=10087405

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1699936A Expired GB480434A (en) 1936-06-18 1936-06-18 Improvements in or relating to short wave signalling systems

Country Status (1)

Country Link
GB (1) GB480434A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969386C (en) * 1941-01-01 1958-05-29 Pintsch Bamag Ag Frequency-dependent reactance for ultra-short waves

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969386C (en) * 1941-01-01 1958-05-29 Pintsch Bamag Ag Frequency-dependent reactance for ultra-short waves

Similar Documents

Publication Publication Date Title
GB515795A (en) Improvements in or relating to radio antennae
GB722660A (en) Directional couplers for microwave transmission systems
GB475348A (en) Improvements in or relating to wireless aerial systems
GB467012A (en) Improvements relating to antenna systems
GB641474A (en) Propagation of radio waves through a tunnel
GB496647A (en) Improvements in or relating to electric high frequency signalling systems
GB436012A (en) Improvements in or relating to high frequency transmission systems
GB493235A (en) Improvements in or relating to electrical high frequency transmission lines
GB480434A (en) Improvements in or relating to short wave signalling systems
GB506518A (en) Improvements in or relating to short wave transmitting aerial systems
GB472650A (en) Improvements in or relating to high frequency signalling systems
GB557942A (en) Broad band antenna
GB504752A (en) Improvements in or relating to antenna systems
GB643577A (en) Antenna element
GB539194A (en) Improvements in electric circuits for coupling unequal impedances
GB495489A (en) Improvements in or relating to aerials and feeder systems
GB690684A (en) Improvements in and relating to electric filter systems
GB389346A (en) Improvements in or relating to feeder or conductor systems for use on very short waves
GB469245A (en) Improvements in or relating to wireless aerial systems
GB523074A (en) Improvements in or relating to radio receiving systems
GB514390A (en) Improvements in or relating to aerial systems
GB736836A (en) An improved wide band aerial
GB472158A (en) Improvements in or relating to arrangements for demodulating frequency modulated carrier wave oscillations
GB744239A (en) An improved aerial
GB501051A (en) Improvements in or relating to aerial systems for radio receivers