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The analytical expressions of the beam-wave coupling coefficients, the beam-loaded conductance and bunching current in the multi-gap coupled cavity are derived based on space-charge wave theory. Through calculating those expressions in a Ka-band three-gap coupled cavity for modes 2π, π and π/2 respectively, the mechanism of the beam-wave synchronization and coupling in the three-gap coupled cavity...
Networks made up of bio-inspired neuron oscillatory circuits with nanoscale memristors may achieve the large connectivity and highly parallel processing power of biological systems. Memristor also has potential to reproduce the behavior of a biological synapse. As in a living creature the weight of a synapse is adapted by ionic flow through it, so the conductance of a memristor is controlled by flux...
This paper proposes synchronized robust control for an active gait trainer. We design an active gait trainer, which composes of linkage mechanism and motors, to produce preferred gait traces for people with walking disability. The goal of this work is to simultaneously control the motors to mimic normal gaits. By finding the transfer functions of the mechanism and motors, we design robust controllers...
Through calculating the relations of the beam-wave coupling coefficient and the normalized beam-loaded conductance with different gap number, beam voltage and space-charge parameter for 2π mode, the mechanism of the beam-wave synchronization and coupling in the multi-gap coupled cavity are discussed in this paper.
In this paper, wireless telemetry using the near-field coupling technique with round-wire coils for an implanted cardiac microstimulator is presented. The proposed system possesses an external powering amplifier and an internal bidirectional microstimulator. The energy of the microstimulator is provided by a rectifier that can efficiently charge a rechargeable device. A fully integrated regulator...
We experimentally report on dynamics of two mutually coupled vertical-cavity surface-emitting lasers (VCSEL) operating in the parallel injection scheme, that is the polarizations of the free-running VCSEL1 and VCSEL2 are parallel to each other. The VCSELs are biased such that their free-running output powers are matched and they operate around 852 nm. Both VCSELs undergo a Hopf bifurcation with excitation...
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