Stripline traveling wave device and method

Details Stripline traveling wave device and method Stripline traveling wave device and method

1988-01-28

1990-10-30

Mullins, James B.

Amplifiers

With traveling wave-type tube

330 49, H03F 358

Patent

active

049671626

ABSTRACT:
A traveling-wave device for amplification of RF signals at microwave frequencies, primarily from UHF to submillimeter wavelengths, comprised primarily of broad-coupled parallel striplines of which one is a cathode stripline and the other a non-intercepting gate stripline disposed between conducting plates. Electrons are emitted from the cathode stripline and accelerated by DC electric fields through the non-intercepting gate stripline on which the microwave signal is propagating in a transmission mode which has reversed directions of the microwave electric field on each side of the gate stripline. The odd mode component of the microwave electric field, between the gate stripline and cathode stripline, serves to modulate and/or stimulate electron emission from the cathode stripline and the reversed direction of the microwave electric field between the gate stripline and the conducting plate decelerates the electrons to add their energy to the propagating wave for amplification. Positive feedback, due to the coupling of the growing RF propagating wave of the stripline system to the odd mode modulating signal, gives the amplifier large and continuous exponential gain.

REFERENCES:
patent: 2647175 (1953-07-01), Sheer
patent: 2654004 (1953-09-01), Bailey
patent: 3755704 (1973-08-01), Spindt et al.
patent: 4091332 (1978-05-01), Crandall

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