3-D Woven Conformal Antenna Structures

Applied Radar proposes to investigate a new method of incorporating microwave antenna and feed components directly into airframe structural members. This method is based on the 3-D weaving of a resin transfer molded (RTM) fiber reinforcement preform that meets both RF and structural requirements. The result will be lighter weight, higher performance radar and communications antenna arrays for both fighter and reconnaissance aircraft in the frequency bands from 30 MHz to 3 GHz and possibly above. We will build on three years of conductive fiber experience and patent pending processes to produce a functioning benchmark prototype that incorporates RF transparent quartz fiber windows, carbon fiber structural fibers for structural performance and interwoven highly conductive fibers. We will then work with our team members to convert our antenna design into a 3-D woven preform and then into a finished RTM antenna part. This structural composite antenna will then be tested for RF and mechanical performance. During Phase II the benchmark antenna will be scaled into a functioning antenna array prototype design that will demonstrate both RF and structural performance to airframe standards.