초록 ▼

A one-piece, collapsible, readily-portable and rapidly-erectable antenna includes a substantially-planar and electrically-conductive ground plane consisting essentially of a central base element and a plurality of electrically conductive assemblies uniformly spaced about and mounted on the base elem

A one-piece, collapsible, readily-portable and rapidly-erectable antenna includes a substantially-planar and electrically-conductive ground plane consisting essentially of a central base element and a plurality of electrically conductive assemblies uniformly spaced about and mounted on the base element, the assemblies being guided on telescoping support rods for movement between expanded and collapsed positions relative to the base assembly. An at-least-three-sided elongated frame structure has a first end mounted on the base element; the other end is movable toward and away from the base element between collapsed and expanded frame structure positions, to collapsibly support a conductive radiator portion, comprising a metal helix. The helix is extended when the frame structure is expanded and is retracted when the frame structure is collapsed. A plurality of elongated rods are mounted on the frame structure for generally radial slidable movement of at least one end portion of each rod toward and away from the frame structure as the frame structure moves between expanded and collapsed positions.

대표청구항 ▼

A collapsible, portable, unitary antenna, comprising: a substantially planar and electrically-conductive first portion including: (1) an electrically-conductive base element; (2) at least one electrically-conductive assembly collapsibly mounted to said base element and including an electrically-cond

A collapsible, portable, unitary antenna, comprising: a substantially planar and electrically-conductive first portion including: (1) an electrically-conductive base element; (2) at least one electrically-conductive assembly collapsibly mounted to said base element and including an electrically-conductive perimeter-defining element movable substantially in the plane of said first portion between a collapsed position adjacent to said base element and an expanded position spaced from said base element; and (3) means for collapsibly mounting said perimeter-defining element to said base element; a generally elongatable, electrically-conductive second portion retractably extending substantially normal to the plane of said first conductive portion; and means for collapsibly supporting said second conductive portion on said first conductive portion.