The proposed antenna presents a microstrip filter with both out-of-band rejection characteristics and radiation for WLAN communication system. consists of four U-shaped resonators, one Γ-shaped antenna, parallel coupling line. has the filtering function as last order resonator, line integrates conductance converter. After simulation test, results show that center frequency is 5.25 GHz, fraction...

In this paper, a plasmonic MIM waveguide consisting of k-shaped resonant cavity is designed, which can support three Fano resonances. The physical mechanisms behind the multiple resonances are studied with help field distributions and changes geometric parameters. Further, by varying refractive index dielectric medium filled in air part waveguide, property sensing studied. maximum sensitivity u...

The tunable double plasmon-induced transparency (PIT) effects are investigated in a waveguide coupled by the three ellipse-shaped resonators. By finite element method, we study influences of coupling modes resonators, structure parameters and refractive indices dielectric resonators on PIT effects. consists is similar to four-level atomic system. bottom resonator can be named bright mode, middl...

In this paper, a wideband circularly polarized (CP) filtering hybrid antenna is presented. The liquid dielectric resonator (DR) excited by microstrip-coupled cross-slot to generate CP radiation. Four inverted L-shaped strips are loaded on the ground plane introduce an additional resonant point, then two adjacent axial ratio (AR) minima combined improve bandwidth of single-feed antenna. By etchi...

Two new microwave sensors, an open cylindrical cavity resonator with a T-shaped excitation element and flanged coaxial line sensor, are used for the nondestructive thickness measurement of surface coatings on unidirectional carbon fiber-reinforced polymer (CFRP) laminate. Both sensors found insensitive to anisotropy composite substrate, offering easy implementation. Three commercially available...