A dual band phased array using interleaved waveguides and dipoles printed on high dielectric substrate

A dual band phased array using interleaved waveguides and dipoles has been developed. Waveguides are used for high frequency band (e.g., C-band) and printed dipoles are used for low frequency band (e.g., S-band). The dipoles are printed on Hi-K dielectric board to shorten the dipole length. The element spacings for the dipole array are equal to the element spacings of the waveguide array. This densed array environment for dipoles greatly improves impedance matching and completely eliminates the grating lobe formation for both bands.