An X-band low-cost phased array based on the extended resonance power dividing technique

Extended resonance phased arrays do not need a separate power splitter and phase shifters compared to conventional phased array systems, resulting in substantial reduction in the circuit complexity and cost. An improved circuit topology has been introduced, which simplifies the design of large and miniaturized phased arrays based on this technique. An X-band 8-antenna extended resonance phased array has been designed, fabricated and tested. The measured scan range was 18 degrees, and the sidelobe level was better than 10 dB.