Very wide-band phased-array antenna

Abstract

An experimental %-element phased-array antenna is described that has been matched to operate over nearly an octave. Techniques used in designing the aperture-matching networks are discussed and experimental results are presented.The array aperture is formed by broad-band digital latching femte phase shifters in a closely stacked triangular coniiguration. For experimental convenience the array is horn fed from the rear. Matching of this antenna was accomplished by placing double-step dielectric transformers on the input and radiating a p e h e s . Resonances caused by the dielectric transformer on the aperture are discussed. The array operates from 3.5 to 6.5 GHz with scanning to f60' in all directions. The bandwidth is limited at the low end by magnetic resonance of the ferrite phase shifter and at the high end by the aperture resonance.

Wideband Solid-State Phased-Array Antenna Development at UHF

“…95 GHz band (the amplifiers capacity was the limiting I factor). 4. A large planar array was simulated in the nonscanning E-plane (to maintain aperture impedance match) by placing the linear array aperture between parallel conducting planes spaced by the E-nlane element spacing of the simulated array.…”