Accession Number : ADD007886

Title :   Conformal Spiral Antenna.

Descriptive Note : Patent,


Personal Author(s) : Sindoris,Arthur R ; Farrar,Frederick G ; Schaubert,Daniel H

Report Date : 20 May 1980

Pagination or Media Count : 5

Abstract : This patent discloses an electrically small, microstrip radiator designed for small-diameter missile applications. The preferred embodiment comprises a cylindrical tube of epoxy fiberglass dielectric having a spiral conducting strip formed thereon. The tubular construction permits the antenna to be conformally mounted to the surface of the missile. RF input coupling may be achieved by an inductive post, and high radiation efficiency is obtained by strongly coupling RF currents to the body of the missile and exciting the dipolar mode of radiation. The design includes means for mechanically tuning the antenna over a narrow frequency range. The resultant spiral-slot antenna produces an axially polarized radiation field and a dipole radiation pattern with isotropic gain in a low cost and rugged construction. (Author)

Descriptors :   *Patents, *Spiral antennas, *Guided missile antennas, *Conformal structures, Strip transmission lines, Microelectronics, Dielectrics, Tuning, Ruggedized equipment, Antenna radiation patterns, Slot antennas, Efficiency, Polarization, Radiofrequency, Coupling(Interaction), Dipoles, Radiation patterns, Epoxy compounds, Fiberglass, Tubular structures

Subject Categories : Electrical and Electronic Equipment
      Guided Missiles

Distribution Statement : APPROVED FOR PUBLIC RELEASE