Millimeter-Wave Band Multi-Mirror Open Resonator. E- and H- Polarized Oscillations
This work provides the experimental research results of E- and H-polarized oscillations of the complex multi-mirror open resonator (OR) , one of the mirrors of which is represented by the echelette reflective grating. The essential difference between the spectra of E- and H- polarized oscillations of complex open resonator (COR) is noted. It is evident that within the range of measurements performed for the H-polarization, only one oscillation mode is excited while in the case with the E-polarization there are excited several of such modes. In this case the self-collimation reflection from the echelette grating determines the conditions for excitation of the OR, which condition is the dispersive element forming up the OR spectrum. Some functional capabilities implied by the design of the suggested multi-mirror open resonant system are also discussed. The suggested multi-mirror open resonant system can find wide application in millimeter-wave band electronics for frequency stabilization of the electron-vacuum and solid-state devices.
MM-wave range oscillator with a multi-mirror open resonator
The millimeter wavelength range generator with four-mirror open resonator is described. The frequency and energy characteristics of the generator are investigated.
Circular groove shaped resonator for millimeter waves
In millimeter wave lengths region semiconductor generators, amplifiers, mixers and other solid state UHF devices find a wide application. In our work, we suggested to use aCircular Through-Shaped Resonator for obtaining power combination using active elements at frequency region Δf≈20–40 GHz.The resonator is formed by two plane aluminum reflectors. The first reflector has a circular groove. The second reflector has coupling elements. The first and the second reflectors are considered as a ring groove shaped waveguide.A resonator spectrum was calculated and analyzed in the frequency range Δf ≈20–40 GHz. It is showed that, in the given frequency range the resonator spectrum has a complicated structure and is formed by a series of spectrum lines; a frequency range between the series increases with the frequency increasing.We studied on transmission coefficient of the resonator, frequency shifts of spectrum lines when inserting a thin (t/λ≈0.003) dielectric substrates into the resonator, and also attenuation constants of waves propagating in circular groove (due to losses in metal).