INHOMOGENEOUS MICROWAVE LENS BASED ON PERIODICALLY LOADED TRANSMISSION LINES

Nonlinear Waves in Transmission Lines Periodically Loaded with Tunneling Diodes

A theory of metamaterials based on periodically loaded transmission lines: Interaction between magnetoinductive and electromagnetic waves

The propagation of waves in a metamaterial consisting of split ring resonators sSRRsd and metallic rods is considered in several steps. The first involves the rods in isolation, the second the SRRs in isolation, and the third a combination of the two, which includes the coupling between neighboring SRRs and allows the propagation of magnetoinductive sMId waves. The mathematical formulation is b...

Three-dimensional isotropic perfect lens based on LC -loaded transmission lines

Abstract An isotropic three-dimentional perfect lens based on cubic meshes of interconnected transmission lines and bulk loads is proposed. The lens is formed by a slab of a loaded mesh placed in between two similar unloaded meshes. The dispersion equations and the characteristic impedances of the eigenwaves in the meshes are derived analytically, with an emphasis on generality. This allows des...

Miniature Microwave Notch Filters and Comparators Based on Transmission Lines Loaded with Stepped Impedance Resonators (SIRs)

In this paper, different configurations of transmission lines loaded with stepped impedance resonators (SIRs) are reviewed. This includes microstrip lines loaded with pairs of SIRs, and coplanar waveguides (CPW) loaded with multi-section SIRs. Due to the high electric coupling between the line and the resonant elements, the structures are electrically small, i.e., dimensions are small as compar...

Tunable transmission lines based on SIW loaded by ESRR

Wave propagation in single layer substrate integrated waveguides (SIWs) loaded by embedded split ring resonators (ESRRs) is discussed theoretically and experimentally. It is shown that the loaded SIW can support a backward-wave passband below the cutoff frequency (fc) of the host SIW or a stopband will appear above fc if the effective transversal permeability is negative. In addition, varactor-...