Open AccessThe Investigation of the Volumetric Strip-Slot Transition with U-Shaped Slot Resonator
Author(s) -
D. G. Fomin,
Nikolay V. Dudarev,
S Darovskikh,
V. K. Baranov
Publication year - 2020
Publication title -
ural radio engineering journal
Language(s) - English
Resource type - Journals
eISSN - 2588-0462
pISSN - 2588-0454
DOI - 10.15826/urej.2020.4.3.002
Subject(s) - resonator , inductance , transmission line , equivalent circuit , capacitance , electrical impedance , materials science , microwave , acoustics , permittivity , physics , electrical engineering , optoelectronics , dielectric , engineering , voltage , electrode , quantum mechanics
The application of volumetric strip-slot transition for the implementationof wireless devices with contactless frequency-selective transmission of microwave signals is relevant. This is due to the compactness of volumetric strip-slot transition achieved by the multilayer arrangement of its functional parts and of its electrical frequency-selective characteristics. At the same time the volumetric-modular design allows the replacement of its individual components which provides high functional flexibility of the device. Reducing of weight and dimensions of the volumetric strip-slot transition while maintaining its electrical characteristics is possible due to well-known methods used in microwave technology: 1) using of substrates with a high value of the relative permittivity, 2) due to the transition to higher frequency ranges. The authors of this paper present the third method for reducing of weight and dimensions of the volumetric stripslot transition by using a U-shaped slot resonator. The development of the equivalent circuit of the volumetric strip-slot transition and calculation of all its lumped elements are also presented. The values of such lumped elements as linear capacitance of the strip line, linear inductance of the strip line, characteristic impedance of the slot transmission line were determined. The value of the inductive inhomogeneity occurred when the slot resonator bends by 90 degrees was calculated and its S-parameters in the frequency range were simulated. Numerical electrodynamics simulation was performed to confirm the validity of the results of circuit simulation. Then the experiment research of the sample of the volumetric strip-slot transition with the U-shaped slot resonator was carried out. The theoretical and experimental results of the conducted researches of volumetric strip-slot transition with the U-shaped slot resonator are in good qualitative and numerical agreement with each other. The use of the U-shaped slot resonator provides an opportunity to achieve a 36% reduction of weight and dimensions parameters of the volumetric stripslot transition while maintaining its electrical characteristics.