Results 61 to 70 of about 20,599 (222)

Spoof Surface Plasmon Polaritons in Terahertz Integrated Circuits

open access: yesAdvanced Photonics Research, Volume 7, Issue 5, May 2026.
Terahertz integrated circuits (THz ICs) face challenges from wavelength‐scale dimensions and parasitic effects. Spoof surface plasmon polaritons (SSPPs) provide strong confinement and enhanced near fields, enabling novel transmission and modulation mechanisms.
Xuanru Zhang, Ze Kai Wang, Tie Jun Cui
wiley   +1 more source

Investigation of New Microstrip Bandpass Filter Based on Patch Resonator with Geometrical Fractal Slot. [PDF]

open access: yesPLoS ONE, 2016
A compact dual-mode microstrip bandpass filter using geometrical slot is presented in this paper. The adopted geometrical slot is based on first iteration of Cantor square fractal curve.
Yaqeen S Mezaal, Halil T Eyyuboglu
doaj   +1 more source

Investigation of Compact Low Pass Filter with Sharp Cut–Off using Metamaterial [PDF]

open access: yes, 2013
In this paper a new compact microstrip Bessel low pass filter (LPF) is experimentally validated using complementary split ring resonator (CSRR) which has sharper cut-off and improved spurious band suppression characteristics. The Richard’s transformation
Annaram, K., Nithya, S.
core   +1 more source

Optimized absorbing boundary conditions for the analysis of planar circuits using the finite difference time domain method [PDF]

open access: yes, 1993
It is shown that the description of absorbing boundary condition algorithms (ABCs) in terms of single incident plane waves does not provide sufficient information for choosing the best ABC for planar waveguide termination.
Daniel, EM   +3 more
core   +2 more sources

Accelerating Full‐Wave Antenna Optimization: An Adaptive Surrogate‐Assisted Differential Evolution Framework

open access: yesEngineering Reports, Volume 8, Issue 5, May 2026.
An adaptive surrogate‐assisted differential evolution framework integrates machine learning‐based surrogate modeling with selective full‐wave electromagnetic validation to accelerate antenna optimization. A CST–Python workflow combines Latin‐hypercube sampling, cross‐validated model selection, and iterative dataset refinement to guide the search toward
Muhammad Farooq   +3 more
wiley   +1 more source

Coupling microstrip line bandpass filter applied to hybrid frequency synthesizers

open access: yesDianzi Jishu Yingyong, 2018
This paper designs a parallel coupled microstrip bandpass filter at the ends of the hybrid frequency synthesizer of PLL+DDS mixing in the outside of the feedback loop systems. This filter is used to suppress the frequency synthesizer′s spurs and harmonic
Chai Xiaorong   +2 more
doaj   +1 more source

The Beauty of Symmetry: Common-mode rejection filters for high-speed interconnects and balanced microwave circuits [PDF]

open access: yes, 2017
Common-mode rejection filters operating at microwave frequencies have been the subject of intensive research activity in the last decade. These filters are of interest for the suppression of common-mode noise in high-speed digital circuits, where ...
Bonache, Jordi   +6 more
core  

Taxonomy of IMT Interference on Aeronautical Systems

open access: yesRadio Science, Volume 61, Issue 4, April 2026.
Abstract The rapid deployment of 5G and future 6G networks has raised concerns about interference with critical aeronautical systems, particularly radio altimeters and Wireless Avionics Intra‐Communications (WAIC). This paper offers a comprehensive taxonomy of the 5G/6G signal interference mechanisms, operational impacts, and mitigation strategies in ...
Valéria C. M. N. Leite, Alison Moraes
wiley   +1 more source

Modelling and validation of a simple and compact wide upper stop band ultra-wideband bandpass filter

open access: yesThe Journal of Engineering, 2014
A compact ultra-wideband (UWB) bandpass filter (BPF) is proposed based on end coupled microstrip transmission line, defected ground structure and defected microstrip structure.
Somdotta Roy Choudhury, Santanu Das
doaj   +1 more source

A Dual-polarized Broadband Planar Antenna and Channelizing Filter Bank for Millimeter Wavelengths

open access: yes, 2013
We describe the design, fabrication, and testing of a broadband log-periodic antenna coupled to multiple cryogenic bolometers. This detector architecture, optimized here for astrophysical observations, simultaneously receives two linear polarizations ...
Ade, Peter   +11 more
core   +1 more source

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