Сообщения от NASA

Lower voltage operation of the Ledatron

Mizuno, J.; Kuji, N.; Ono, S.

In: European Microwave Conference, 4th, Montreux, Switzerland, September 10-13, 1974, Proceedings. (A75-19751 07-33) Sevenoaks, Kent, England, Microwave Exhibitions and Publishers, Ltd., 1974, p. 46-50.

We have successfully observed the millimeter wave oscillation in the Ledatron due to the TEM-02 field distribution of the Fabry-Perot mode, which had been predicted by our theory of operation. Through operation of this mode, we can reduce an electron accelerating voltage about 10 per cent to obtain the same oscillating frequency without any change of grating structures. The increase of the start-oscillation current is small when proper configuration of the resonator is chosen. The resonant characteristic of the grating has been examined experimentally and theoretically. So far an output power of around 300 milliwatts has been obtained at 300-GHz band.

Keywords: CAVITY RESONATORS, FIELD MODE THEORY, MICROWAVE OSCILLATORS, MICROWAVE TUBES, MILLIMETER WAVES, MODAL RESPONSE, ELECTRIC POWER, FABRY-PEROT INTERFEROMETERS, GRATINGS (SPECTRA), SUBMILLIMETER WAVES, VIBRATION MODE, WAVE GENERATION, WAVE INTERACTION