The self-injection-locked magnetron

Author

Choi, Gil Wong ; Kim, Hae Jin ; Kim, Hyoung Jong ; Choi, Jin Joo

Author_Institution

Dept. of Wireless Commun. Enginering, Kwangwoon Univ., Seoul

fYear

2008

fDate

22-24 April 2008

Firstpage

445

Lastpage

446

Abstract

This paper presents a new method of noise reduction in magnetron using self-injection-locking loop. The self-injection-locked magnetron divides into two cases in accordance to filter type: waveguide cavity filter and DR filter. This self-injection-locked magnetron consists of the coupler, high-Q filter (DR filter or waveguide cavity filter), circulator, and a phase-shifter without external source. Experimental results show that the self-injection-locked magnetron using waveguide cavity filter and DR filter is improved by 11.1 dB and 12.6 dB compared to the noise level of free oscillation magnetron at the 1 MHz offset frequency.

Keywords

cavity resonator filters; magnetrons; waveguide filters; circulator; coupler; free oscillation magnetron; high-Q filter; noise reduction; phase shifter; self-injection locked magnetron; self-injection locking loop; waveguide cavity filter; Couplings; Magnetic resonance; Magnetic separation; Matched filters; Microwave filters; Noise level; Noise reduction; Phase noise; Resonant frequency; Wireless communication; Self-injection-locked magnetron;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference, 2008. IVEC 2008. IEEE International

Conference_Location

Monterey, CA

Print_ISBN

978-1-4244-1715-5

Type

conf

DOI

10.1109/IVELEC.2008.4556395

Filename

4556395