Low-cost Irregular Subarrayed Wide-Angle Scanning Array Design for 5G and IoT Applications

Subarray technique is an effective way to realize the low-cost design of phased array antennas. However, the limit field of view effect will be introduced while the degrees of scan was reduced. In this paper, a wide-angle scanning phased array design scheme based on low-cost irregular tiles is presented. The primary causes of the quantization lobes are analyzed and the minimum number of subarrays with the desired scanning angle coverage is given. As an example, a hybrid structure composed of two kinds of irregular tiles is proposed to cope with the limit scanning angle coverage problem. Numerical results are presented to validate the effectiveness of the method.