Abstract: A resistively terminated antenna and method of fabricating a resistively terminated antenna comprising providing a resistor-conductor laminate, selectively removing portions of the resistive and conductive layers to produce an antenna design and mounting the resistor-conductor laminate on the dielectric substrate. Etching selectively removes portions of the conductive and resistive layers, and mounting is accomplished using a spacer, film resistor, and ground plane, where the resistor-conductor laminate is fixed to the surface of the dielectric substrate opposite the film resistor. The film resistor may have a central aperture.

Abstract: An artificial resistive card which prevents scattering due to diffraction, and which forms impedance transitions from ground planes to antenna apertures or to free spaces, incorporates resistive and conductive layers formed on a substrate. The conductive layer is etched away, either partially or entirely, using integrated circuit technology in order to vary the resistivity of the resistive card. Portions of the resistive layer may also be etched away to expose the underlaying substrate and increase the resistivity of the resistive card. The size and dimension of the resistive and conductive pattern left after etching determines the value of the resistivity and is easily and accurately reproduced.

Abstract: An antenna having more than four elements positioned in a predetermined regular pattern with equal angles between adjacent elements and a mode former connected to the elements to shift signals from the elements by first equal electrical angles and superimposing the signals to provide a first output mode and shifting the signals by second equal electrical angles and superimposing the signals to provide a second output mode, the two output modes providing sufficient information to determine the direction of the radiated signal impinging on the antenna.