Patent ID: 6097271
Filing Date: 2000-08-01
Classification: H01P,H01Q,H05K,Y10S,Y10T

Abstract:
An apparatus for use with an electromagnetic wave, the apparatus comprising:a dielectric material for transmitting the electromagnetic wave, the dielectric material includinga host dielectric material including a curable plastic material; anda plurality of particles having a conductivity from 10.sup.2 to 10.sup.10 mhos per meter, the particles dispersed in the host dielectric material, the electromagnetic characteristics of the dielectric material and the particles, including the conductivity of the particles, and volume loading of the particles in the host dielectric material, predetermined so that the dielectric material has a permittivity that decreases with increasing frequency, and is approximately proportional to the inverse square of the fequency over a preselected operating frequency bandwidth of the apparatus that includes a frequency in a range from 10.sup.6 to 10.sup.12 Herz the host dielectric material and particles dispersed therein molded in a predetermined shape; anda conductive material for transmitting the electromagnetic wave, together with the dielectric material, so that a phase relationship at different positions along the conductive material remains relatively constant with variation in the electromagnetic wave's frequency within the operating frequency bandwidth due to the decrease of the penittivity with increasing frequency, the conductive material including a printed metal foil disposed in contact with the dielectric material, the metal foil configured as at least one circuit element for transmitting the electromagnetic wave.