초록 ▼

An antenna comprises a signal radiator, a ground plane spaced apart from the radiator, and a dielectric separator between the radiator and the ground plane. The separator comprises at least two positions having different dielectric constants. In a preferred embodiment, it comprises a material such a

An antenna comprises a signal radiator, a ground plane spaced apart from the radiator, and a dielectric separator between the radiator and the ground plane. The separator comprises at least two positions having different dielectric constants. In a preferred embodiment, it comprises a material such as FR-4 that has a dielectric constant and a loss tangent substantially higher than those of air and is formed with at least one void reducing the loss tangent of the separator. The antenna strikes an effective compromise between the dielectric constant and loss tangent and is well suited to transmit and receive GPS signals.

대표청구항 ▼

[ What is claimed is:] [1.]1. An antenna comprisinga signal radiator,a ground plane spaced apart from the radiator, anda dielectric separator between the radiator and the ground plane, wherein the separatorcomprises FR-4 material formed with at least one void reducing the loss tangent of the separat

[ What is claimed is:] [1.]1. An antenna comprisinga signal radiator,a ground plane spaced apart from the radiator, anda dielectric separator between the radiator and the ground plane, wherein the separatorcomprises FR-4 material formed with at least one void reducing the loss tangent of the separator to a value at least as low as 0.03 while maintaining the dielectric constant of the separator at a value at least as high as 1.26.