Showing papers by "Y.Y. Lau published in 2019"
01 Apr 2019
Abstract: The Harmonic Recirculating Planar Magnetron (HRPM) is a crossed field microwave source capable of oscillating at high power, potentially at four different frequencies from L-Band to S-Band. In a previous experiment, the two oscillators of the Multi- Frequency Recirculating Planar Magnetron (MFRPM) exhibited harmonic frequency locking, where one oscillator at S-Band locked to the second harmonic of the other oscillator's L-Band resonant frequency. The HRPM has been designed to experimentally test the harmonic frequency locking concept.
2 citations
01 Apr 2019
TL;DR: In this paper, experimental and computational results obtained in coaxial geometry for this frequency-space were presented, showing that the high-frequency coaxial regime in particular is not well characterized, which leads to unanticipated device failures in many medium and high-power systems.
Abstract: Uncertainty in multipactor prediction currently leads to unanticipated device failures in many medium and high-power systems. Space-based systems, such as communication satellites, are strongly impacted by this uncertainty, due to their tight engineering requirements and susceptibility to signal degradation. The high-frequency coaxial regime, in particular, is not well characterized. We report here on experimental and computational results obtained in coaxial geometry for this frequency-space.
1 citations
01 Apr 2019
TL;DR: An analytical model is presented which assesses the distortion of a signal by multipactor and the I-Q plot is presented to show the effects of multipactor.
Abstract: Recently, there is significant interest in multipactor discharge because of its threat to satellite communications. In this paper, an analytical model is presented which assesses the distortion of a signal by multipactor. Complex, multi-tone signals will also be investigated. The I-Q plot is presented to show the effects of multipactor.