A novel amplifier chain which is composed of the forward wave crossed - field amplifier ( cfa ) driven directly by solid state amplifier ( ssa ) is better in performances and reliability compared with traditional three stage chain which is composed of " ssa + twta + cfa " 摘要采用固态放大器直接驱动前向波管的新型放大链与“固态-中功率行波管-前向波管”三级放大链相比较,具有更好的性能指标。