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Off-Bragg blazing of gratings for high efficiency frequency scanning antennas, multiplexers and demultiplexers, is described. Blaze angles occur in pairs and are related by a generalization of the Bragg condition applicable to all grating profiles. Off-Bragg blazing for TM polarization occurs for several perfectly conducting grating profiles, perhaps for(More)
Transfemoral sockets were originally constructed from wood or hard plastic laminates (Radcliffe, 1955). More recently, thermoplastics and acrylic resins with carbon fiber or other woven materials have been used (Ng, 2002). Although these materials achieve suitable load transmission between the residual limb and the prosthesis, their rigidity prevent the(More)
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