This paper presents a tri-band bandpass filter (BPF) using a novel stub-loaded resonator. Different from other stub-loaded resonator, this resonator utilized a short-ended main transmission line and a centerly-loaded open stub. The resonator is theoretically analyzed. The first three resonant frequencies can be individually adjusted and this enables the convenient designs of tri-band BPFs. For ...

A second-order bandpass filter (BPF) with continuously variable centre frequency tuning is presented in this article. Evanescent-mode cavity resonators with variable capacitive loadings are used as tuning elements. Tuning is achieved by means of micro-electromechanical-systems (MEMS)-actuated highly conductive rigid fingers that feature an out-of-plane deflection. For an applied DC bias voltage...

Introduction Besides degeneration of axons, normal aging of human cerebral white matter (WM) is histologically associated with changes in myelin sheaths [1,2]. Exchange of magnetization between protons of tissue water and those bound to macromolecules is used in MRI to determine the bound pool fraction (BPF). BPF, the molar fraction of bound protons is associated with intact myelin and was prev...

Bisphenol A (BPA) and its substitutes bisphenol S (BPS) F (BPF) are endocrine disrupting chemicals widely used in the production of polycarbonate plastics, epoxy resins thermal papers. The aim review was to identify occupational studies using human biomonitoring (HBM) as a tool for exposure assessment characterize research gaps on topic part HBM4EU project. Hence, systematic literature search P...

Xuehui Guan et al. 953 A novel dual-mode bandpass filter (BPF) using a dual spiral-shaped defected ground waveguide (DGW) resonator is proposed in this letter. The dual-mode characteristic of this filter is achieved by loading a defected T-shaped stub at the midline of the spiral-shaped DGW resonator. Also, nonorthogonal input and output feed-lines are adopted in the filter. Based on the compac...

Recently, RF systems have rapidly grown with the extension of the mobile communication service. The mobile service companies are providing the satellite broadcasting and common usage are expected. Coinciding with current trend, the development of improved satellite DMB (Digital Multimedia Broadcasting) tuner is required. To improve the receiving sensitivity under the poor communication circumst...

In order to investigate the effect of relative motion nano CaCO3 reinforced bamboo pulp fiber (BPF)/HDPE composite components on mechanical performance, a comparative study was performed. BPF treated by blending (BM) and impregnation modification (IM) technology. The composites were produced using hot press (HPMP), extrusion (EMP) injection molding process (IMP). physical morphology similar at ...

In this study, three voluteless centrifugal fans are compared for their aeroacoustic performances. The tonal noise is predicted by coupling the IDDES with Formulation 1A of Farassat. sources at blade passing frequency (BPF) identified. It found that related to fan inlet gap, which introduces higher velocity intensities and turbulent fluctuations interacting leading edge. By redesigning BPF redu...

Design and performance of a coplanar waveguide (CPW) bandpass filter (BPF) using Composite Right/Left-handed (CRLH) Zeroth-order Resonators have been studied. The Bloch analysis is applied based on the S parameters to derive the characteristics of the eigenmodes (Bloch modes), from which the right/left-handed frequency band and the zeroth-order resonant frequency are clearly determined. Then, t...

We study the local region-of-interest (ROI) reconstruction problem, also referred to as the local CT problem. Our scheme includes two steps: (a) the local truncated normal-dose projections are extended to global dataset by combining a few global low-dose projections; (b) the ROI are reconstructed by either the generalized filtered backprojection (FBP) or backprojection-filtration (BPF) algorith...