摘要:
A high power, highly efficient, phase-stable frequency-multiplying magnicon microwave amplifier is disclosed having efficiencies that exceed 60%. The magnicon amplifier has an output cavity that receives an electron beam that is deflection modulated by the drive, gain and penultimate cavities of the magnicon amplifier. The output cavity is dimensioned so as to operate in a TM.sub.m10 mode, where m is an even integer greater than two. The output cavity is selected to preferably have an operating frequency f.sub.o which is twice the cyclotron frequency f.sub.c of the output cavity.
摘要:
A high frequency amplifier for a frequency range from 300 MHz to 3 GHz and having output power in the megawatt range. A beam generating device for generating a rotating electron beam includes an input resonator ring rotationally symmetric with respect to the amplifier axial axis and which presents a concentric input gap. A cathode ring disposed in front of the input gap generates the electron beam in response to an HF electrical field. The azimuthal angle width of that electron beam can be adjusted by means of a direct voltage between cathode ring and grid ring. An output resonator ring converts the kinetic energy of the beam electrons into HF power in dependence on the azimuthal angle width of the entering beam. The output resonator is rotationally symmetric with respect to the amplifier axis, axially spaced from and biassed with respect to the input resonator by a direct voltage. The axial space between the input and output resonators constitutes a direct voltage acceleration path which the electron beam traverses within an annular cylindrical region coaxial with the amplifier axis. A grid ring disposed opposite the cathode ring allows passage of the beam but prevents passage of an electrical field from the input resonator into the acceleration path. A collector is disposed on the side of the output resonator remote from the input resonator. The beam generating device, acceleration path, output resonator and collector are axially disposed one behind the other.
摘要:
A gyrocon deflection system can provide circular beam deflection using a single RF coupler, without providing a phase difference between the two beam deflection signals to account for electron beam transit time between the two sets of deflection plates. The two sets of deflection plates are internally connected pairwise together so that both deflection regions are in RF phase, and the midplanes of the two sets are spaced 90.degree. apart electrically at the desired operating voltage and frequency.
摘要:
High efficiency amplification of radio frequencies to very high power levels including: establishing a cylindrical cloud of electrons; establishing an electrical field surrounding and coaxial with the electron cloud to bias the electrons to remain in the cloud; establishing a rotating electrical field that surrounds and is coaxial with the steady field, the circular path of the rotating field being one wavelength long, whereby the peak of one phase of the rotating field is used to accelerate electrons in a beam through the bias field in synchronism with the peak of the rotating field so that there is a beam of electrons continuously extracted from the cloud and rotating with the peak; establishing a steady electrical field that surrounds and is coaxial with the rotating field for high-energy radial acceleration of the rotating beam of electrons; and resonating the rotating beam of electrons within a space surrounding the second field, the space being selected to have a phase velocity equal to that of the rotating field to thereby produce a high-power output at the frequency of the rotating field.
摘要:
Vacuum SHF apparatus comprising a means for forming a charged-particle beam, an accelerating tube for imparting relativistic energies to the charged-particle beam, and a deflection yoke for circular scanning of the beam at an input signal frequency, the accelerating tube and the deflection yoke being arranged coaxially with the beam forming means and successively along the path of the charged-particle beam. The apparatus further comprises an additional magnetic deflection yoke for deflecting the scanned beam outwardly from the longitudinal axis of the apparatus, and an annular travelling-wave resonator. The additional magnetic deflection yoke is preferably made as a cone whose vertex faces the charged-particle beam forming means. The annular travelling-wave resonator is so designed that its broader walls are parallel to the longitudinal axis of the apparatus, the broader walls being provided with annular slots for the charged-particle beam, that has been deflected by the additional deflection yoke, to enter and leave the annular resonator. The annular resonator is provided with means for taking SHF energy therefrom.