Abstract
Compared with the traditional slow wave structure (SWS) with a fundamental mode, the oversized SWS with deep corrugation operating in a high-order mode has a higher power handling capacity and lower beam density. However, for the new structures, the traditional Floquet harmonic expansion method is not applicable in analyzing the dispersion characteristics of the slow wave structure. In this paper, we present a new analysis method based on the mode matching method, which is suitable for the arbitrary depth of corrugation of SWS. Besides, as the field matches at the corrugated surface of inner and outer conductors, the method is applicable whether the conductors are corrugated or uniform. The method is validated by software simulation. The calculation results of the software verify the correctness of the theory and show that the theoretical calculation is more convenient. By the method we present, the dispersion characteristics, field distribution, and coupling impedance are theoretically derived and analyzed.
Highlights
With the development and the application requirements of a high power microwave device, the increase in the operating frequency and power handling capacity becomes one of the most significant objectives of HPM technology.1–3 millimeter high power microwave devices have important applications in both civil and military fields such as satellite communication, remote sensing, and directional transmission of electromagnetic energy
The slow wave structure we presented is used in a V-band coaxial oversized high power microwave oscillator
We present a coaxial oversized slow wave structure with deep corrugation to increase power handling capacity and to suppress mode competition of a high order operation mode
Summary
With the development and the application requirements of a high power microwave device, the increase in the operating frequency and power handling capacity becomes one of the most significant objectives of HPM technology. millimeter high power microwave devices have important applications in both civil and military fields such as satellite communication, remote sensing, and directional transmission of electromagnetic energy. With the development and the application requirements of a high power microwave device, the increase in the operating frequency and power handling capacity becomes one of the most significant objectives of HPM technology.. The size of the traditional singlemode devices generally decreases with the operation wavelength, which causes low power handling capacity and restricts high frequency development. High order operation modes and oversized structures are used to increase the power handling capacity of HPM devices.. In order to increase the power handling capacity and improve the beam– wave interaction, a novel oversized oscillator operating in highorder mode is proposed in this paper. The arrangement of this paper is as follows: In Sec. II, the advantages of the oscillator with deep corrugation, operating on high-order mode, are analyzed.
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