A compact circularly polarized (CP) patch antenna using a composite right/left-handed (CRLH) transmission line (TL) unit-cell is proposed. The CRLH TL unitcell includes a complementary split ring resonator (CSRR) for shunt inductance and a gap loaded with a circularshaped slot for series capacitance. The CSRR can decrease the TM10 mode resonance frequency, thus reducing the electrical size of t...

Metamaterials are an active area of interest currently due to their exotic electromagnetic properties not readily found in nature. In this report, the transmission line approach is used to design a Complementary Right Left Handed (CRLH) Transmisssion line. The characteristics of a modulated pulse propagation are studied. We look at how the variation of pulse width, centre frequency and pulse re...

Prism coupling and reflection spectroscopy are used to characterize bound modes within composite right/left handed terahertz metamaterial waveguides. The cavity antenna model is used to understand the polarization dependence of the radiative coupling to TM00 and TM01 waveguide modes. Furthermore, the cavity model along with transmission-line theory is used to derive a surface impedance model fo...

The majority of up-to-date conceived composite right-handed / left-handed (CRHLH) transmission lines (TL) are open configurations derived from microstrip technology. We present here a closed CRHLH architecture derived from the H10 rectangular hollow waveguide mode, which is realised in substrate-integrated waveguide (SIW) technology and is thus easy to fabricate. The dispersion characteristic i...

A novel resonator using a composite right/left-handed (CRLH) transmission line (TL) is presented and its extraordinary resonant characteristics with an infinite-wavelength wave are discussed. The resonance corresponds to the zeroth-order on the analogy of the conventional mode numbering. The zeroth-order resonant characteristics and loss mechanism are fully described by the circuit theory and i...

We consider a model of baryogenesis based on adding lepton number-violating quadratic mass terms to the inflaton potential non-minimally coupled inflation model. The $L$-violating generate asymmetry in complex field via term Affleck-Dine mechanism, which is transferred Standard Model (SM) sector when decays right-handed (RH) neutrinos. minimal that it requires only SM sector, RH neutrinos, and ...

A relative humidity (RH) sensor based on single-mode-no-core-single-mode fiber (SNCS) structure is proposed and experimentally demonstrated. The agarose gel is coated on the no-core fiber (NCF) as the cladding, and multimode interference (MMI) occurs in the SNCS structure. The transmission spectrum of the sensor is modulated at different ambient relative humidities due to the tunable refractive...

Abstract In this paper, by using Fokas method, we study the initial-boundary value problems (IBVPs) of fourth-order dispersive nonlinear Schrödinger (FODNLS) equation on half-line, which can simulate transmission and interaction ultrashort pulses in high-speed optical fiber system, also describe spin excitation phenomenon one-dimensional Heisenberg ferromagnetic chain with eight poles dipole in...