Abstract
A T-stub Square Ring Resonator (SRR) based Ultra-Wide Band (UWB) Band Pass Filter (BPF) is studied and investigated in this paper. The proposed filter is based on coupled feed line connected to the T-stub SRR. Ultra-wideband characteristics can be realized by adjusting the T-stub lengths and coupling the gaps between both sides of waveguides and SRR. The characteristics of the T-stub SRR show that the miniaturized UWB BPF can be operated at THz frequencies. The proposed UWB filter is simulated and analyzed using the Finite Differential Time Domain (FDTD) solver-based Computer Simulation Technology (CST) studio suite. The resonance conditions are explained and the transmission performance of the filter agrees with the simulated and theoretical calculations. The proposed filter is best suitable for Electronic-Plasmonic Integrated Circuits (EPICs).
Highlights
The light incident on a metal-insulator region produces a high-speed electromagnetic (EM) wave called Surface Plasmon Polarity (SPP) [1]
The T-stub Square Ring Resonator (SRR) filter for ultra-wide band applications based on transmission characteristics was studied
Simulations were carried out using the Finite Differential Time Domain (FDTD) based Computer Simulation Technology (CST) studio suite
Summary
The light incident on a metal-insulator region produces a high-speed electromagnetic (EM) wave called Surface Plasmon Polarity (SPP) [1]. SPPs are known for overcoming the diffraction limit of the light at nanoscale wavelengths. Due to the low loss and high confinement of light at nanoscale range the Metal-Insulator-Metal (MIM) waveguide has been proposed by several researchers [2,3,4]. A Band Pass Filter (BPF) with symmetric side couple nano-disk resonators is analyzed for 1310nm and 1550nm in [16]. A concurrent dual band BPF is designed using slot waveguides and the performance is carried out at the resonant frequencies of 1300nm and 1600nm respectively in [17]. A tunable stepped impedance ring resonator for dual band BPF is designed and analysed at O and L bands in [18]. Most of the investigations are carried out in single-, dual- and triple-band of operation for BPF.
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