Pattern synthesis for a forward-fire/backward-fire linear array

Two pattern synthesis procedures have been developed for a traveling-wave linear array, fed at its center, with half the array forward-firing, the other half backward-firing, and the total array required to produce a squinted main beam and controlled sidelobes. The procedure is illustrated by the case of a 36-element slot array, designed to create a sum pattern with a -30-dB sidelobe level and the main beam tilted 2.25 degrees off broadside. Center-fed traveling-wave arrays offer the potential of increased bandwidth and a frequency-independent squint angle.<
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