| 摘要 |
A signal output assembly for an inductive output amplifier comprises a primary output cavity including a drift tube enclosing a modulated electron beam. The density modulated beam passes across a gap separating portions of the drift tube and induces an amplified RF signal into the primary output cavity. A secondary output cavity comprises a coaxial resonator terminated in an inductive coupling loop, and a waveguide having a ridge. The coaxial resonator and the inductive coupling loop have a combined electrical length approximately equivalent to an odd multiple of one-quarter wavelengths of the input signal (nlambd/4), where n is an odd integer. The coaxial resonator is electrically connected perpendicularly to a center of the ridge such that first and second portions of the ridge extend in opposite directions from the connection with the coaxial resonator to respective ends of the waveguide. The first and second ridge portions each have a length approximately equivalent to an odd multiple of one-quarter waveguide wavelengths of the input signal (nlambdg/4), where n is an odd integer. The inductive coupling loop is coupled at a first end thereof to an end of a center conductor of the coaxial resonator and at a second end thereof to an outer conductor of the coaxial resonator. The inductive coupling loop extends into the primary output cavity and is adapted to couple the amplified RF signal from the primary output cavity to the secondary output cavity. The amplified RF signal is thereafter coupled out of the secondary output cavity through a secondary inductive coupling loop.
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