Study of high-power pulsed RF generators based on a hollow-cathode discharge

High-Power Compact <inline-formula> <tex-math notation="LaTeX">$P$ </tex-math></inline-formula>-Band UHF Oscillator Based on Hollow Cathode Discharge

“…At the same time, decreasing the volume of the gasdischarge cavity leads to significant increase in the discharge current density. As found in [10], high current densities lead to premature constriction of the gas discharge and, as a consequence, decrease in the generation pulse duration. Therefore, the gas-discharge chamber with the hollow cathode is the main unit of the HF oscillator where the oscillation generation takes place.…”

“…As shown in [10], decreasing the diameter and/or depth of the hollow cathode leads to significant increase in the oscillator's frequency. At the same time, decreasing the volume of the gasdischarge cavity leads to significant increase in the discharge current density.…”

Intense superminiature beamless generators in gas-discharge microwave electronics

“…For example, in the case of the genera tor described in [3], V = 3.4 × 10 -7 λ 3 , whereas for the best generator of [4], V = 3.6 × 10 -6 λ 3 . Therefore, HF generators of the class under consideration can be called super miniature devices.…”

“…The research group of our institute, which included the authors of this present paper, published a vast review [4] of modern studies aimed at improving the characteristics of HF pulses at the output of hollow cathode generators and refining the physical mecha nisms of their operation. In the review, a number of various sized gas discharge chambers were described.…”

“…For all generators described in [1][2][3][4][5][6], the HF emis sion is limited from above by the frequency of 200 MHz. The general task of the present investigation is further elevation of the generation frequency, which is accompanied by the transition to the microwave range.…”