## The theory of radio communication between submerged submarines |

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actual antennas in air applied approximation assumed biconical antenna boundary conditions branch point characteristic impedance circuit coaxial antenna component computed conducting medium conductor considered coordinates curve cylinder depth attenuation determine dielectric constant distant field electric and magnetic electric antennas Electric Case Magnetic electric dipole electric field evaluated exponential expression Figure given Hankel function Hertzian dipole Hertzian potential horizontal electric infinite input impedance insulation integral integrand interface intrinsic impedance kilocycle loop antenna Magnetic Antennas magnetic dipole magnetic field magnitude maximum meters method noise numerical distance obtain optimum frequency power flow power ratio propagation constant quantity radiation intensity radiation resistance radius range reactance received power receiving antenna region Schelkunoff sea water short short-circuited coaxial shown solution Sommerfeld submarine communication submarine propagation submerged antennas Substituting surface System Attenuation tenna termination tion transmission line transmitting antenna uninsulated variation vector potential Vertical Antennas voltage wavelength zero