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In this letter, a novel structure of a single split-ring resonator (S-SRR) is presented and discussed. Two metallic vias are combined with the S-SRR to improve the performance. A coplanar waveguide (CPW) loaded with the new structures and series gaps, which works as a band pass filter is simulated and fabricated. The proposed band pass filter reaches a high level of compactness, which provides a good...
The conventional microstrip bandpass filter has very narrow passband, and its performance is not excellently good. This paper presents a novel ultra-wideband (UWB) filter with good performance by using periodic uniplanar compact photonic bandgap (UC-PBG) cells and multi-interdigital structures. This novel filter owns a passband of 5.6GHz (1.2–6.8GHz) whose fractional bandwidth is 140%. The simulation...
In this paper, a compact bandpass cross-coupled substrate integrated waveguide (SIW) filter with transmission zero is proposed. Using three triangular cavities as basic elements, a bandpass filter is designed and fabricated on a single-layer substrate with the standard printed circuit boards (PCB) process. This structure gives full expression to the advantages of compact SIW triangular cavity. Not...
In this paper, a novel ultra-wideband (UWB) filter with double interdigital structures and periodic slow wave structures is proposed. By using these structures, the performance of the microstrip bandpass filter has been improved significantly. The slow wave structures are constructed by the periodic fishbone structures and the ground etching periodic square holes. This novel filter is very compact...
The Multiple Filter Technique (MFT) is a filtering technique, which is used to investigate variations in the amplitude and phase of dispersive signals in the time (t), and frequency f) domain. The paper extends the MFT to process current vector time series. The rotary MFT is applied to investigate the evolution of nonlinear wave-wave interactions observed in the ocean. The purpose of the present paper...
A one-third triangular resonator with two electric walls and two virtual magnetic walls is proposed for the design of a broadband filter. The structure is realised by taking out one-third of an equilateral or isosceles triangular resonator of the substrate integrated waveguide and therefore it is called the one-third-mode substrate integrated resonator (OTMSIR). The characteristics of the OTMSIR cavity...
In this paper, a quadruple-mode filter based on the substrate integrated waveguide (SIW) is investigated. The basic element of the filter is a one-third triangular resonator with two electric walls and two virtual magnetic walls. The resonator is called one-third-mode substrate integrated resonator (OTMSIR). The electric field distribution and frequencies of different modes existed in the OTMSIR are...
This paper presented a novel substrate integrated nonradiative dielectric (SINRD) waveguide bandpass filter based on Print Circuit Boards (PCBs). Firstly, by drilling an array of square via-slot or circular via-slot patterns in a substrate we can realize a waveguiding dielectric channel similar to the canonical nonradiative dielectric (NRD) waveguide. Choosing the geometry of the via-slot patterns...
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