Extended interaction microwave oscillator including a sucession

Details Extended interaction microwave oscillator including a sucession Extended interaction microwave oscillator including a sucession

1981-05-20

1984-03-27

Grimm, Siegfried H.

Oscillators

Beam tube

With electron bunching or velocity variation means

315 35, 315 393, H01J 2536, H03B 908

Patent

active

044397461

ABSTRACT:
This oscillator comprises a periodic structure line constituted by a succession of vanes having an orifice in which propagates a linear electron beam. This line is placed over a cavity constituted by a straight parallelepiped which has a rectangular base, whose dimensions are determined in such a way that it behaves like a waveguide at the cut-off frequency, along the longitudinal axis of the line and on a transverse magnetic or TM.sub.mn mode with m=1, 3, 5 etc. and n=1, 2, 3, 4 etc. Coupling slots are provided on the cavity between two successive vanes and in a gap between pairs of vanes. The anode voltage of the beam and the distance between two successive vanes are selected in such a way that the cavity resonates at the cut-off frequency and on the .pi. mode. Applications include measuring oscillators and heterodyne radar transmitters and receivers.

REFERENCES:
patent: 2411953 (1946-12-01), Brown
patent: 2552334 (1951-05-01), Linder
patent: 2951182 (1960-08-01), Feinstein
patent: 3535584 (1970-10-01), Cutting
Ire Transactions on Electron Devices, vol. Ed-6, No. 1, Jan. 1959 NY J. Feinstein et al, "A Class of Waveguide-Coupled Slow-Wave Structures", pp. 9-17.
Ire Transactions on Electron Devices, vol. Ed-9, No. 2, Mar. 1962, NY. J. W. Sewartowski, "Waveguide-Vane Coupled Slow-Wave Structure Suitable for High-Power Traveling-Wave Amplifier," pp. 204-209.
The Microwave Journal, vol. 2, No. 12, Dec. 1959, Horizon House, Nedham E. J. Nalos, "Present State of Art on High-Power Traveling-Wave Tubes" pp. 31-38.

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