摘要：将已有的生命周期路由算法分成两类:普通Max-Min(GMM)算法和条件Max-Min(CMM)算法,然后为这两类算法分别提出它们的诚实机制.通过给予中继节点适当的报酬,这些诚实机制可以确保已有的算法在面对自私节点的时候也可以实现它们的设计目标.说明生命周期路由算法的本质可以使这种报酬率相对较低且比较稳定,实验结果也进一步证明了这一点.

摘要：A new class of co.pact and lightweight S-band 1 kW traveling-wave tube (TWT) is being developed for a microwave power module (MPM) that will be used for phased antenna array radar applications. The proposed S-band MPM provides a tenfold peak power increase co.pared to state-of-the-art S-band MPMs. In this paper, the design of the vacuum power booster TWT part of the MPM is presented. The co.pact and lightweight S-band TWT is driven by a 6 kV, 0.9 A electron beam. The amplifier is predicted by large-signal simulations to generate over 1 kW at S-band with 25 dB saturated gain and over 40% efficiency. The stability from unwanted oscillations has been investigated. To suppress the oscillations, the helix circuit has been co.ted with carbon co.posite material. The co.xial input and output antennas have been fabricated. For efficiency enhancement, a multi-stage depressed co.lector (MDC) has been designed using a 3D particle-in-cell (PIC) simulator, VORPAL. The co.lector design makes use of a current loop based on a feedback mechanism for effective design process. The integrated designs of a helix circuit, an electron gun, a periodic permanent magnet (PPM), antennas, and a co.lector are presented.