The investigation of sensitive element on the planar mushroom-shaped metamaterial are considered. The results of numerical simulation sensitive element for measurement of physical quantities and monitoring parameters of technological processes using CST Studio Suite are presented. Also it is shown that the microstrip sensitive element has geometrical dimensions much smaller operating wavelength while maintaining a high Q-factor structure.
Methods for extension of the rejection band of microwave devices on the basis of planar modified mushroomshaped metamaterials comprising either twolayered topological structures with frequencyselec tive surfaces or multilayer bulk structures with intermediate layers containing splitring resonators are pro posed. Computer simulation of such devices, clearly demonstrating a two to sixfold extension of the rejec tion band is performed. Experimental results confirming the results of numerical simulation are presented.