An electronically scanned array at millimeter wavelengths employing ferrite apertures

The theory and experimental results are presented for an electronically scanned array antenna using multiple wavelength ferrite aperture elements at millimeter wavelengths. The theory for the individual element scanner is given, along with the experimental patterns. Curves showing the tradeoffs of aperture size, scan capability, and efficiency are plotted for the element scanners. A five-element array employing the element scanner as elements was analyzed, constructed, and tested experimentally. The constructed array scanned ( )with a scan speed of 50 milliseconds.