Solid-state (SS) amplifiers present many benefits and advantages that make this technology a good candidate to substitute traditional vacuum technology amplifiers. The evidence is that many large scientific facilities are upgrading their radiofrequency (RF) power systems, replacing tetrodes or IOTs (Inductive Output Tubes) by SS amplifiers. Following this tendency, SS technology has been selected for the RF Power System of IFMIF-DONES (International Fusion Materials Irradiation Facility – DEMO-oriented Neutron Source). One of the current challenges in SS amplifiers is focused on achieving high efficiency in the power combination. This paper introduces a promising RF power combination technique for the reduction of the combination losses. It consists of a resonant cavity combiner, which can combine in only one step the power of a large number of power inputs with high efficiency. The design, fabrication, and experimental validation of a prototype cavity combiner will be presented. The objective is to develop an industrial design for the large-scale production that will be demanded by the IFMIF-DONES RF Power System.

固态（SS）放大器具有许多优点和优点，使该技术成为替代传统真空技术放大器的理想选择。有证据表明，许多大型科研机构正在升级其射频（RF）电源系统，以SS放大器代替四极管或IOT（感应输出管）。遵循这种趋势，SS技术已被选为IFMIF-DONES（国际聚变材料辐照设施–面向DEMO的中子源）的RF功率系统。SS放大器当前面临的挑战之一是集中精力实现功率组合的高效率。本文介绍了一种有希望的射频功率组合技术，可以减少组合损耗。它由一个谐振腔合路器组成，仅需一步就能高效地组合大量电源输入的电源。将介绍原型腔体组合器的设计，制造和实验验证。目的是为IFMIF-DONES射频功率系统所需的大规模生产开发工业设计。