Results 31 to 40 of about 5,806 (197)

Compact microstrip bandpass filter with sharp passband skirts using square spiral resonators and embedded-resonators [PDF]

, 2009
The aim of this paper is to produce and develop a new four-pole microstrip bandpass filter (BPF) structure for high selectivity applications. The microstrip BPF is designed using Chebychev lowpass prototype with passband ripple of 0.05 dB and bandwidth ...
A. Rasid, Mohd Fadlee, Adam, Helmi, Alhawari, Adam Reda Hasan, Esfeh, Babak Kazemi, Ismail, Alyani, Raja Abdullah, Raja Syamsul Azmir   +5 more
core   +1 more source

A compact ultra wideband bandpass filter using arrow coupled lines with defected ground structure

Journal of Electrical Systems and Information Technology, 2014
A new ultra wideband bandpass filter (UWB-BPF) using arrow coupled lines and U-slot defected ground structures (U-DGS) is proposed. The input and output feeding lines are connected to the coupled lines placed on the conductor side of the substrate while ...
Deena A. Salem, Ashraf. S. Mohra, A. Sebak   +2 more
doaj   +1 more source

Bandpass filter design with spurious frequency reduction capability [PDF]

, 2014
Passband microstrip coupled line filter are widely used in daily microwave engineering practice. There are various topologies to implement microstrip bandpass filters such as end-coupled, parallel coupled, hairpin, interdigital and combine filters.
Muda @ Ali, Rosnani
core  

Frequency comb based four-wave-mixing spectroscopy [PDF]

, 2017
We experimentally demonstrate four-wave-mixing spectroscopy using frequency combs. The experiment uses a geometry where excitation pulses and four-wave-mixing signals generated by a sample co-propagate.
Cundiff, Steven T., Lomsadze, Bachana
core   +1 more source

Deterministic Fiber‐Optic Spectral Engineering Enables Three‐Color Multiplexed Two‐Photon Microscopy

Laser &Photonics Reviews, EarlyView.
A simulation‐guided spectral‐engineering framework maps the nonlinear parameter space of a fiber laser platform to identify balanced three‐band excitation states. The resulting 960, 1080, and 1175 nm femtosecond pulses deliver nJ‐level energies for low‐cross‐talk chromatically multiplexed two‐photon microscopy.
Marvin Edelmann, Andreu Matamoros‐Angles, Mohsin Shafiq, Mikhail Pergament, Franz X. Kärtner, Markus Glatzel   +5 more
wiley   +1 more source

Portable Radar for Noncontact Heart Rate Monitoring and Estrus Detection in Dairy Cows

IEEJ Transactions on Electrical and Electronic Engineering, EarlyView.
This study introduces a portable radar system for real‐time monitoring of respiratory and heart rates in dairy cows. It uses millimeter‐wave Frequency Modulated Continuous Wave (FMCW) radar to perform noncontact physiological sensing, reducing behavioral disturbance. The radar system's design prioritizes portability, cost‐effectiveness, and robustness,
Yingxiu Li, Ranran Wang, Fuyang Tian, Yudao Li, Zhuolin Wang, Yuxin Yu, Liping Ma, Xin Lu   +7 more
wiley   +1 more source

A miniaturized Microwave Bandpass Filter Based on Modified (Mg0.95Ca0.05)TiO3 Substrate

MATEC Web of Conferences, 2016
A microwave miniaturized bandpass filter using (Mg0.95Ca0.05)TiO3 (abbreviated as 95MCT hereafter) ceramic substrate is investigated in the present paper.
Hu Mingzhe, Ding Zhao, Zeng Zhiwei, Ji Denghui, Luo Chunya   +4 more
doaj   +1 more source

Analysis of bit rate dependence up to 80 Gbit/s of a simple wavelength converter based on XPM in a SOA and a shifted filtering [PDF]

, 2008
This paper provides the analysis of wavelength converted pulses obtained with a simple semiconductor optical amplifier (SOA)-based wavelength conversion scheme, which exploits cross phase modulation (XPM) in an SOA in conjunction with shifted filtering.
Anandarajah, Prince M., Barry, Liam P., Bramerie, Laurent, Clarke, Aisling M., Girault, Gwenaelle, Guignard, Celine, Harvey, John D., Reid, Douglas A., Simon, Jean Claude   +8 more
core   +3 more sources

Single‐Molecule Forster Resonance Energy Transfer With a Minimalistic 3D‐Printed Setup and Dyes in the Blue‐Green Spectral Region

ChemPhysChem, Volume 27, Issue 8, 28 April 2026.
Single‐molecule FRET enables nanometer‐scale insights into biomolecular structure and dynamics but often requires complex instrumentation. We present the FRET‐Brick, a minimalistic, 3D‐printed microspectroscopy platform using 488 nm continuous‐wave excitation and PMT detection.
Gabriel G. Moya Muñoz, Jorge R. Luna Piedra, Pazit Con, Mostofa Ataur Rohman, Siyu Lu, Thomas‐Otavio Peulen, Thorben Cordes   +6 more
wiley   +1 more source

High‐Performance All‐Optical Modulator Based on Graphene‐Loaded Ultrathin Silicon Slot Waveguides

Advanced Photonics Research, Volume 7, Issue 4, April 2026.
A novel scheme composed of graphene‐loaded ultrathin silicon slot waveguide is demonstrated realizing high‐performance all‐optical modulation on silicon photonic platform. Owing to the enhanced light–matter interaction and suppression of two‐photon absorption, the device shows a measured modulation depth over 3dB, a modulation efficiency of 0.086 dB/μm
Zhiang Zhou, Haitao Chen, Siyu Zhou, Hongyuan Cao, Hezhi Ren, Yiheng Wu, Xuan Wang, Haochun Yao, Mengjian Zhu, Daoxin Dai   +9 more
wiley   +1 more source