Multimaterial and Multilayer Direct Digital Manufacturing of 3-D Structural Microwave Electronics. - Kenneth H. Church; Nathan B. Crane; Paul I. Deffenbaugh; Thomas P. Ketterl; Clayton G. Neff; Patrick B. Nesbitt; Justin T. Nussbaum; Casey Perkowski; Harvey Tsang; Juan Castro; Jing Wang 048; Thomas M. Weller (Proc. IEEE, 2017)