Patent ID: 6191651
Filing Date: 2001-02-20
Classification: H01J

Abstract:
In a linear beam amplification device providing an electron beam modulated by an RF input signal, a signal output assembly comprises:a primary output cavity receiving an amplified RF signal from said linear beam amplification device;a secondary output cavity comprising a generally rectangular waveguide having a ridge;a coaxial resonator coupling said primary and secondary output cavities, said coaxial resonator being electrically connected perpendicularly to a center of said ridge such that first and second portions of said ridge extend in opposite directions from a junction with said coaxial resonator to respective ends of said waveguide, said first and second ridge portions each having a respective electrical length approximately equivalent to an odd multiple of one-quarter waveguide wavelengths (n.lambda..sub.g /4) of said input signal, where n is an odd integer;first means for coupling said amplified RF signal from said primary output cavity to said coaxial resonator, said coaxial resonator and said first coupling means being adjustable to achieve a combined electrical length approximately equivalent to an odd multiple of one-quarter wavelengths (n.lambda./4) of said input signal; andsecond means for coupling said amplified RF signal out of said secondary output cavity.