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    • 6. 发明专利
    • LEAKAGE COAXIAL CABLE
    • JPS5631206A
    • 1981-03-30
    • JP10780579
    • 1979-08-24
    • FUJIKURA LTD
    • NOMURA KIYOUICHIYASUHARA HIKARIHAYAKAWA TOSHIYUKI
    • H01Q13/22H01Q13/20
    • PURPOSE:To reduce considerably the influence dependent upon reflection from peripheral materials, by suppressing radiation of theta-direction components of the electric field to radiate only Z-direction components in respect to slots which are inclined in the axial direction and are arranged oppositely. CONSTITUTION:Leakage slits 21 and 22 are formed with slots of the same form which are inclined at angle phi for the axial direction of the cable in directions opopsite to each other. Pairs of slots are provided at the interval of approximate lambdag (guide wavelength) in the longitudinal direction of the cable. Since slots are very close to each other, generated electric fields E are approximately equal, and phases in the waveguide are equal. Therefore, Ez components are emphasized with each other, and Etheta components are cancelled with each other. As a result, Etheta components are suppressed and are heardly radiated in respect to radiation from each pair of slots, and only Ez components are radiated.