Multielement systems of double slots in rectangular waveguide with partial dielectric filling
Resonance characteristics of narrow transversal slots, energetic and directional characteristics of an antenna array (AA) with single transversal slots and double ones cut in a rectangular waveguide, partially filled with dielectric are investigated. In the case of the single transversal slots and double transversal slots a dielectric layer is parallel to broad walls of the waveguide. It was shown the possibility to construct an AA with double transversal slots the pattern without diffraction lobes and high level of radiation power in the frequency band.
Slot radiators in a rectangular waveguide partly filled with dielectric
Resonance and power characteristics of narrow transversal and longitudinal slots in a rectangular waveguide with a dielectric layer are investigated. In the case of the transversal slots a dielectric layer is parallel to broad walls and for longitudinal slots it is parallel to narrow ones. It was shown the possibility of transversal slot resonance radiation in a singlemode operation when the waveguide wavelength is shorter than one in the free space. The validity of the algorithm built for the longitudinal slot is conformed. The reliability of numerical results are confirmed experimentally. The results are useful for slot antenna design and antenna array development that is important for radar hardware and technology applications.
Multifunctional radar systems
The paper contains data about characteristics of several radar systems designed for visualization of radar situation during surveillance of sea areas of economic regions and fishing areas, and for security purpose.