General Atomics fabricates flexible waveguides from a single piece of aluminum. The flexible regions have deep internal and external corrugations. They are precisely machined to hold a vacuum. Each waveguide bellows has a medium bandwidth and can be designed for multiple-frequency operation. For high average power, flexible waveguides in CuCrZr (copper chromium zirconium) alloy are offered.
John Doane, GA-MFE Technologies