Passive reradiator of radio-frequency electromagnetic energy

Claim 2

A passive r.f.-electromagnetic-energy, reradiating device comprising, in combination: a plurality of integral half-wave dipole antennas; and means for supporting said dipoles, said dipoles being insulated from and disposed between said supporting means parallel to and spaced closely in the parallel direction from each to form an array of dipoles, said spacing being equal to or less than 150 wavelength at the resonant frequency of the dipoles, said dipoles having no energy feed or energy derivation means connected thereto.

Claim 3

A passive reradiating device as in claim 1, wherein: said means for supporting said dipoles includes a quadrilateral metal frame, said dipoles being strung between two opposite sides of said frame and making electrical contact therewith, the electrical contacts being open-circuits at the resonant frequency of said dipoles.

Claim 4

A passive reradiating device as in claim 2, wherein groups of said framed dipoles are vertically stacked.

Claim 5

A passive reradiating device as in claim 2, wherein groups of said framed dipoles are horizontally stacked.

Claim 6

A passive reradiating device as in claim 2 wherein groups of said framed dipoles are both horizontally and vertically stacked.

Claim 7

A passive reradiating device as in claim 2 wherein said dipoles comprise strands of wire, and further including a plurality of strands of insulating material interwoven with and at right angles to said strands of wire.

Claim 8

A passive reradiating device as in claim 6, further including a metal rod disposed at an angle within and affixed at both ends oF said metal frmae to form a pair of trapexoidal figures therewith, said strands of interwoven wire and insulating material being attached between said frame and said internal metal rod to form two trapezoidal groups of dipoles, the lengths of said dipoles within each said trapezoidal group increasing in an ordered series.

Claim 9

A r.f. electromagnetic energy reradiating device comprising, in combination: a plurality of integral, half-wave dipole antennas; a plurality of electrical insulators; and a pair of side-support members, said dipoles being arranged in strings wherein the dipoles are separated by said insulators, each string extending between and beng attached at its ends to said side-support members, and said strings being arranged in closely spaced rows in the parallel direction, said spacing being equal to or less than 1/8 wavelength at the resonant frequency of the dipoles, said dipoles having no energy feed or energy derivation means connected thereto.

Claim 10

A r.f. electromagnetic energy reradiating device comprising, in combination: a plurality of integral, half-wave dipole antennas; a plurality of electrical insulators; and a pair of side-support members, said dipoles being arranged in strings wherein the dipoles are separated by said insulators, each string extending between and beng attached at its ends to said side-support members, and said strings being arranged in closely spaced rows in the parallel direction, said spacing being equal to or less than 1/8 wavelength at the resonant frequency of the dipoles, said dipoles having no energy feed or energy derivation means connected thereto.

Claim 11

A device as in claim 8, wherein each string is composed of a series of insulators and horizontal dipoles so that a horizontally polarized array is formed.

Claim 12

A device as in claim 8, wherein each string comprises a pair of insulating lines strung horizontally between said side-support members and a plurality of dipoles spaced from each other and standing vertically between said pair of insulating lines.