A novel compact dual-band bandpass filter using spiral resonators and input/output (source-load) direct coupling structure has been presented. Two different transmission paths are utilized to realize independently controllable central frequencies and bandwidths for each passband. In addition, three transmission zeros has been introduced to improve the frequency selectivity. A dual-passband filt...

Currently, the storage of ore processing residues is a major challenge in mining industry. These tailings are increasingly filtered advance disposal using filter presses to make safer and recover water effectively. However, falling detached cakes between individual filtration cycles results abrasive wear cloths at specific points chamber geometry main reason for necessity regular replacement. I...

The edge detection is usually used for controlling the automation of pattern recognition in intelligent machines, traffic control and mobile devices security systems. Due to the complex of image control, the dimensions are increasing so that the single wavelet is not able to address some applications, thus, high-dimensional wavelet basis is needed. This paper introduces a construction of dual w...

Abstract— The inductor-less designing of monolithic tunable active dual-band bandpass filter is presented in this study. Biasing voltages signify main role. They can control the center frequency and quality factor. Using four biasing voltages and cascading two similar filters leads to dual-band bandpass filter. By keeping the gain constant, the center frequency shift is 200 MHz. Regardless cons...

Two compact and low loss dual-mode filters are proposed by using degenerate modes of slotted triangular microstrip patch resonators. The geometrical size and radiation loss of the triangular patch are reduced simultaneously by loading both horizontal and vertical slots. The resonant frequencies of two degenerate modes can be easily controlled by varying the dimensions and positions of the slots...

Hexagonal dual-mode cavity and its application to substrate integrated waveguide (SIW) filter are presented. The hexagonal SIW resonator which can combine flexibility of rectangular cavity and performance of circular cavity is convenient for dual-mode bandpass filters design. By introducing coupling between source and load, the filter not only has good selectivity due to two controllable transm...

This paper reports a new class of compact inline dual-band bandpass filters using TM-mode dielectric resonators in planar configuration. Thanks to the employment dielectric-loaded waveguide configuration and dual-mode TM120 TM210 resonances, substantial size miniaturization volume saving (>70%) can be obtained comparison with conventional technology. Additionally...

In soot filtration simulation, there exists a discrepancy of scales. The filter media can be represented with a resolution of a micron, while the soot particles can be as small as 20 nanometers. A representative portion of the media is needed, but also the correct deposition behavior of the soot particles in order to achieve realistic clogging behavior. A hierarchy of simulations may help with ...