Experimental study on hundreds of MW at X-band for relativistic backward wave oscillator (RBWO)

Author

Min, S.H. ; Jung, H.C. ; Park, G.S. ; An, J.H. ; Lee, S.H. ; Yoon, Y.J. ; Kim, J.Y. ; Choi, J.H. ; So, J.H.

Author_Institution

Dept. of Phys. & Astron., Seoul Nat. Univ., Seoul, South Korea

fYear

2009

fDate

21-25 Sept. 2009

Firstpage

1

Lastpage

1

Abstract

BWO-circuit was designed to generate hundreds MW electromagnetic wave on X-band in this study. A RF coupler is designed and fabricated to measure the power of an electromagnetic wave which is generated in the slow wave structure of a relativistic backward wave oscillator (RBWO) before this wave is radiated through an antenna. To pickup about -63 dB of total output power and avoid a RF breakdown in this coupler, a 2 mm times 5 mm slot is made in a cylindrical waveguide. This coupler is installed before the radiation antenna and the measured value is compared with the power which is measured after the radiation. In the end, the radiation pattern was identified by using of fluorescent lamps.

Keywords

antennas; backward wave oscillators; circular waveguides; microwave integrated circuits; slow wave structures; waveguide couplers; MW electromagnetic wave; RBWO; RF coupler; X-band; cylindrical waveguide; fluorescent lamps; radiation antenna; radiation pattern; relativistic backward wave oscillator; slow wave structure; Antenna measurements; Electric breakdown; Electromagnetic coupling; Electromagnetic measurements; Electromagnetic scattering; Electromagnetic waveguides; Oscillators; Power generation; Power measurement; Radio frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on

Conference_Location

Busan

Print_ISBN

978-1-4244-5416-7

Electronic_ISBN

978-1-4244-5417-4

Type

conf

DOI

10.1109/ICIMW.2009.5325516

Filename

5325516