GB487282A - Improvements in or relating to high frequency transmitting arrangements - Google Patents

Improvements in or relating to high frequency transmitting arrangements

Info

Publication number
GB487282A
GB487282A GB16152/37A GB1615237A GB487282A GB 487282 A GB487282 A GB 487282A GB 16152/37 A GB16152/37 A GB 16152/37A GB 1615237 A GB1615237 A GB 1615237A GB 487282 A GB487282 A GB 487282A
Authority
GB
United Kingdom
Prior art keywords
line
frequencies
common
aerial
dimensioned
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
GB16152/37A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co Ltd
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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB487282A publication Critical patent/GB487282A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies

Landscapes

  • Transmitters (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

487,282. Wireless transmitting systems. MARCONI'S WIRELESS TELE. GRAPH CO., Ltd. June 10, 1937, No. 16152. Convention date, June 30, 1936. [Classes 40 (iii) and 40 (v)] In a system in which two or more sources of different frequency are fed to a common load, means are provided in each connection for permitting flow of its own energy to the load and for preventing flow of other frequencies back towards the associated source. The system is described for feeding carrier waves modulated respectively by voice and video frequencies to a common transmission line and aerial. In the drawings Tl and T2 are the sources, TL the common transmission line and A the aerial. The means referred to above may comprise suitable-dimensioned, closed or open, two-conductor line sections as indicated at d1 and d2, Fig. 1, or may be combinations of reactances as indicated at d<1>1, d<1>2, Fig. 2. Impedance matching of the antenna system and line TL is obtained by elements m, n dimensioned as set forth in Specification 478,211. Suitable dimensions for the elements where two and three frequencies are fed to the common line are set out in the Specification. Specification 457,911 also is referred to.
GB16152/37A 1936-06-30 1937-06-10 Improvements in or relating to high frequency transmitting arrangements Expired GB487282A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US88073A US2128400A (en) 1936-06-30 1936-06-30 Transmission line system

Publications (1)

Publication Number Publication Date
GB487282A true GB487282A (en) 1938-06-17

Family

ID=22209244

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16152/37A Expired GB487282A (en) 1936-06-30 1937-06-10 Improvements in or relating to high frequency transmitting arrangements

Country Status (3)

Country Link
US (1) US2128400A (en)
BE (1) BE422353A (en)
GB (1) GB487282A (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2712646A (en) * 1945-05-22 1955-07-05 James L Lawson Dual transmitter system
US2532993A (en) * 1945-06-21 1950-12-05 Rca Corp Band-pass filter
US2462443A (en) * 1946-01-07 1949-02-22 Rca Corp Transmission line system
US2543973A (en) * 1946-06-27 1951-03-06 United Air Lines Inc Plural-frequency coupling unit
US2570579A (en) * 1946-12-06 1951-10-09 Rca Corp Transmission line system
US2600949A (en) * 1947-01-21 1952-06-17 Rca Corp Transmission line network
US2594055A (en) * 1949-06-29 1952-04-22 Westinghouse Electric Corp Antenna coupling system
US2635176A (en) * 1949-09-01 1953-04-14 Rca Corp Radio-frequency heating system
US2713152A (en) * 1950-06-28 1955-07-12 Rca Corp Vestigial side band filter
BE509377A (en) * 1951-02-26
DE972113C (en) * 1951-04-08 1959-05-21 Pintsch Electro G M B H Electric switch
US2701339A (en) * 1951-05-01 1955-02-01 Rca Corp Transmission line filter
US2853681A (en) * 1953-01-30 1958-09-23 Gen Electric Dual frequency rotatable joint
US2837739A (en) * 1954-07-12 1958-06-03 Stewart Warner Corp Sense antenna system
US2984798A (en) * 1959-08-26 1961-05-16 Harold E Bryan Duplexer
US3500426A (en) * 1965-10-22 1970-03-10 Scott & Fetzer Co Magnetically driven antenna array
US3922683A (en) * 1974-06-24 1975-11-25 Hazeltine Corp Three frequency band antenna
CN1081850C (en) * 1995-09-29 2002-03-27 松下电器产业株式会社 Power amplifier and communication device

Also Published As

Publication number Publication date
BE422353A (en) 1900-01-01
US2128400A (en) 1938-08-30

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