Microwave broadband phased array element: design and performance (microstrip horn opened by conduction flaps)

The design and performance of a broadband phased-array element with adequate angular coverage is presented. This element was made easily adaptable to microstrip technology as an alternative to notch or Vivaldi antennas. The radiation field calculation, the design parameters study, and the design process are described. A prototype of the phased array element was designed and constructed, and both the E and H radiation patterns and the reflection coefficients were measured. The prototype shows good scanning characteristics as well as appropriate coverage in elevation.<>