Communications: radio wave antennas – Antennas – Microstrip
Patent
1978-12-06
1980-05-20
Moore, David K.
Communications: radio wave antennas
Antennas
Microstrip
343895, 343830, H01Q 138
Patent
active
042042127
ABSTRACT:
An electrically small, microstrip radiator designed for small-diameter mile 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.
REFERENCES:
patent: 3713166 (1973-01-01), Munson et al.
patent: 3778717 (1973-12-01), Okoshi et al.
patent: 4032921 (1977-06-01), Sikina, Jr.
patent: 4083046 (1978-04-01), Kaloi
Farrar Frederick G.
Schaubert Daniel H.
Sindoris Arthur R.
Edelberg Nathan
Elbaum Saul
Gibson Robert P.
Moore David K.
The United States of America as represented by the Secretary of
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