A compact, lightweight, and flexible array antenna for L-band applications is presented. The antenna consists of a primary patch and two parasitic patches using corrugated copper-cladded polyimide (CCPM) films, which provide excellent bending performance.
A single antenna with high bending capability is developed first. This element is used to demonstrate a 1×4 linear array. The antenna has a bandwidth from 1.18 GHz to 1.26 GHz with a maximum gain of 14.6 dBi at 1.22 GHz. The antenna array is analyzed and measured for the flat case as well cylindrical cases with radius of 400, 300, 200, and 160 mm.