Model 330AP256 is printed on a high performance low loss polytetraflorethylene substrate. The feed network is printed on the same side as the elements. The feed arrangement is a corporate fed network using standard microstrip design techniques. The elements are appropriately spaced to optimize gain and minimize sidelobes. The printed interconnecting transmission lines are shaped and positioned to reduce spurious emissions. The antennas are gold-plated to prevent oxidation of the circuit. Cobham Sensor Systems has many options available for other frequencies and gain levels.