Title :
A W-band third harmonic gyrotron with a photonic band gap cavity
Author :
Dimin Sun ; Huaibi Chen ; Guowu Ma ; Yinhu Huang ; Hongbin Chen
Author_Institution :
Dept. of Eng. Phys., Tsinghua Univ., Beijing, China
Abstract :
The design and experimental results of a third harmonic gyrotron oscillator using a photonic band gap (PBG) cavity are presented. The cavity is a two-dimensional PBG structure formed by triangular arrays of copper rods. The lattice spacing is 2.96 mm and the radius of rods is 1.08 mm. The PBG cavity is designed to support a TE04-like mode resonant at 95 GHz. Experimental operation of a 40 kV, 4 A third harmonic gyrotron oscillator with the PBG cavity is conducted. The third harmonic oscillation with step tunable frequency from 89.3 GHz to 96.6 GHz is observed when the magnetic field varies from 1.15 T to 1.22 T.
Keywords :
gyrotrons; photonic band gap; TE04-like mode resonant; W-band third harmonic gyrotron; copper rods; current 4 A; frequency 89.3 GHz to 96.6 GHz; gyrotron oscillator; magnetic field; photonic band gap cavity; triangular arrays; two-dimensional PBG structure; voltage 40 kV; Cavity resonators; Frequency modulation; Gyrotrons; Harmonic analysis; Magnetic fields; Measurement by laser beam; Photonic band gap; gyrotron; harmonic; millimeter wave; photonic band gap (PBG);
Conference_Titel :
Vacuum Electronics Conference, IEEE International
Conference_Location :
Monterey, CA
DOI :
10.1109/IVEC.2014.6857668
