RT Journal Article
ID 2ab8856c6c528061
A1 Berdnik, S. L.
A1 Katrich, V. A.
A1 Kiyko, V. I.
A1 Nesterenko, M. V.
A1 Penkin, Yu. M.
T1 POWER CHARACTERISTICS OF A T-JUNCTION OF RECTANGULAR WAVEGUIDES WITH A MULTI-ELEMENT MONOPOLE-SLOTTED COUPLING STRUCTURE
JF Telecommunications and Radio Engineering
JO TRE
YR 2016
FD 2016-08-12
VO 75
IS 6
SP 489
OP 506
K1 waveguide junction
K1 impedance monopole
K1 resonant slot
K1 impedance coating
K1 metamaterial
AB Rectangular waveguide junctions are widely used antenna-waveguide devices. For this reason analysis of the impact of impedance insertions on the electrodynamic characteristics of the junctions is of great importance for practical applications. The paper suggests a mathematical model of an <i>E</i>-plane <i>T</i>-junction of rectangular waveguides with a three-element monopole-slot structure of the coupling. The model has been developed on the basis of an approximate analytical solution of the equation set for the currents obtained by the method of induced electro- and magnetomotive forces. A peculiarity of the model is simultaneous consideration of two impedances. These are a variable along the monopole axes surface impedance and a constant impedance distributed across the end face of the lateral semi-infinite waveguide. Multiparametric investigations have been performed of the power characteristics of the junction for the single-mode operation regime of the waveguides, including the case of covering the end face of the lateral waveguide by a metamaterial layer. The possibility is investigated of the efficient use of impedance coats in the capacity of control elements of sharing the power between the output arms of the waveguide junction.


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