Modular Multipurpose RF Amplifier

Both existing and planned accelerators, synchrotrons, and light sources need radio frequency (RF) amplifiers at a range of frequencies. Typically, each amplifier is built to a unique design, potentially by multiple vendors, resulting in high acquisition costs, and complex operations and maintenance over the lifetime of the system. If a single modular design could satisfy a wide range of RF requirements, such an amplifier could be built in quantity, lowering its price to all users. This project will develop a modular RF amplifier, based on a vacuum electronic device (VED), suitable for use over a range of frequencies and applications. In Phase I, the RF amplifier was designed, the specific VEDs required for target commercial frequencies were selected, and the key RF drive elements of the amplifier itself were demonstrated. The design utilizes common power supplies, controls, and other components. Estimates of RF amplifier cost, reliability, and extensibility were made for a wide range of VED powers and frequencies. In Phase II, the modular RF amplifier will be designed for two widely applicable frequencies. The selected amplifier will be constructed and delivered to a national laboratory for assessment of its operability, controls and interfaces, and flexibility. Commercial Applications and other Benefits as described by the awardee: The modular RF amplifier should find use in military systems, communication systems, and industrial applications such as plasma generation, RF heating, and drying/curing. Currently, none of these applications benefit from the efficiencies of scale that would be available if their requirements could be met with a single, modular design. A common, modular RF amplifier system would eliminate the extensive non-recurring engineering required for each individual amplifier, reduce the cost of acquiring and operating these systems, and simplify their integration into a wide range of systems and applications.