Title :
A Novel Mode-Transducing Antenna for High-Power Microwave Application
Author :
Yuan, Cheng-Wei ; Fan, Yu-Wei ; Zhong, Hui-Huang ; Liu, Qing-Xiang ; Qian, Bao-Liang
Author_Institution :
Nat. Univ. of Defense Technol., Changsha
Abstract :
A mode-transducing antenna composed of a coaxial plate-inserted mode converter and a compact coaxial conical horn was presented. The antenna transforms the TEM mode into coaxial TE11 mode firstly and then radiates it from the coaxial conical horn. It has the virtues of compactness, high aperture efficiency, boresight peak, and low sidelobe level. An antenna for a 1.76 GHz magnetically insulated transmission-line oscillator (MILO) was designed with a length of 60 cm and an aperture radius of 23.5 cm. It produces a gain of 17.4 dBi with an aperture efficiency of 74%. The test results are in good agreement with the simulations. The antenna also presents good performances in the high-power microwave experiments of the MILO
Keywords :
aperture antennas; conical antennas; horn antennas; microwave antennas; microwave oscillators; transmission lines; 1.76 GHz; 60 cm; MILO; TEM mode; coaxial plate-inserted mode converter; compact coaxial conical horn; high aperture efficiency; high-power microwave application; low sidelobe level; magnetically insulated transmission-line oscillator; mode-transducing antenna; Aperture antennas; Coaxial components; Horn antennas; Insulation; Microwave antennas; Microwave oscillators; Tellurium; Testing; Transmission lines; Transmitting antennas; High-power microwave (HPM); horn antenna; mode converter; transmitting antennas;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2006.882199
