Results 71 to 80 of about 139,447 (303)

Simple Coupled-Line Tunable Bandpass Filter With Wide Tuning Range

IEEE Access, 2020
In this paper, a tunable bandpass filter using coupled line with a wide tuning range is proposed. The proposed filter has a simple structure which is composed of a coupled-line section and two pairs of varactors.
Xiaoxiao Chen, Yongle Wu, Yuhao Yang, Weimin Wang   +3 more
doaj   +1 more source

ECCCII-Based Current-Mode Universal Filter with Orthogonal Control of w_o and Q [PDF]

, 2014
This paper presents a new current-mode current-controlled four-input five-output universal filter employing one current-controlled current conveyor (CCCII), one electronically tunable CCCII and two grounded capacitors. The proposed configuration provides
Junnapiya, S., Khateb, F., Kumngern, M., Phasukkit, P., Tungjitkusolmun, S.   +4 more
core   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

Advanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr, Alexander Biewald, Andre Mähringer, Thaddäus J. Koller, Peter Mayer, Markus Döblinger, Achim Hartschuh, Dana D. Medina   +7 more
wiley   +1 more source

Notch Filtering Suitable for Real Time Removal of Power Line Interference [PDF]

, 2013
This paper presents a high performance notch filtering for real time suppression of power line interference in a general signal. The disturbing signal is suppressed using an optimal notch FIR filter with tunable notch frequency.
Vlcek, M., Zahradnik, P.
core   +1 more source

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

Advanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian, Jingkai Lin, Zhihao Tian, Selusiwe Ncube, Huayang Zhang, Emiliano Cortés, Hongqi Sun, Shaobin Wang   +7 more
wiley   +1 more source

Ultra-wideband bandpass microstrip filter with electronically tunable notch-band

e-Prime: Advances in Electrical Engineering, Electronics and Energy
This paper introduces a compact ultra-wideband (UWB) microstrip filter featuring both a fixed and an electronically tunable notch band. Operating within the frequency range of 3.27 GHz to 5.61 GHz, the filter incorporates a permanent notch at 4.08 GHz ...
Dattatray S. Bade, Sudhakar S. Mande
doaj   +1 more source

A Technique for Tunable Filters with Low Insertion Loss and Narrow Bandwidth

E3S Web of Conferences, 2018
A technique for tunable filters with low insertion loss and narrow bandwidth is proposed in the form of comb-line structure. Both resonant capacitor with pin-diodes and resonant inductance in the tunable filter were analyzed and the main source of ...
Zhou Chang, Ji Chen, Wu Gen Ping
doaj   +1 more source

Harmonic suppressed coupled stepped-impedance resonator based dual-band tunable bandpass filter

Engineering Science and Technology, an International Journal, 2017
In this paper, a tunable dual-band bandpass filter (BPF) based on a varactor-loaded coupled stepped-impedance resonator is presented. Transmission matrices techniques are employed to explain the working concept of proposed tunable BPF. For validating the
Amarjit Kumar, Nagendra Prasad Pathak
doaj   +1 more source

Narrowband tunable filter based on velocity-selective optical pumping in an atomic vapor

, 2009
We demonstrate a tunable, narrow-band filter based on optical-pumping-induced circular dichroism in rubidium vapor. The filter achieves a peak transmission of 14.6%, a linewidth of 80 MHz, and an out-of-band extinction >35 dB.
Alessandro Cerè, Ana Predojević, Bao, Elitzur, Florian Wolfgramm, Fricke-Begemann, Gayen, Happer, Harris, He, Höffner, Junxiong, Liu, Marta Abad, Morgan W. Mitchell, Neergaard-Nielsen, Pearman, Turner, Valentina Parigi, Wieman, Wolfgramm   +20 more
core   +1 more source

Magnetic Control of Chiral Hybridized Phonon Magnetic Moments in Ferrimagnets Fe2‐xZnxMo3O8

Advanced Functional Materials, EarlyView.
Helicity‐resolved magneto‐Raman spectroscopy reveals magnetic control of chiral phonon magnetic moments in polar ferrimagnet (ZnxFe2−xMo3O₈). Large spontaneous zero‐field phonon splittings, selective phonon–magnon coupling, and asymmetric Zeeman responses demonstrate that phonon chirality is governed by magnon‐phonon coupling and magnetization.
Youngsu Choi, Dirk Wulferding, Amit Pawbake, Clément Faugeras, Sivasakthi Kuppusamy, Raman Sankar, Gichan Son, Jeongwoo Kim, Kwang‐Yong Choi   +8 more
wiley   +1 more source