Results 61 to 70 of about 4,045 (233)

An Active Beam‐Reconfigurable Retrodirective Array

Nanophotonics, Volume 15, Issue 13, 13 July 2026.
The proposed beam‐reconfigurable retrodirective array not only enables retroreflection toward the signal source but also achieves flexible beam steering via a tunable reflection plate, offering a viable solution for real‐time multipoint communication and multitarget wireless power transfer.
Wen Yue Wei, Yan Shi, Li Jing Yang, Jun Wei Wu, Qiang Feng, Long Li   +5 more
wiley   +1 more source

Design and analysis of quasi‐lumped notch filter with extended upper pass band

Electronics Letters
This paper presents a hybrid technique‐based compact narrow band stop filter design for broadband applications. It provides the rejection of 60 dB at the centre frequency of 2.25 GHz without any stop band harmonics over the required frequency band of ...
Mohit, Satish Jhariya, Shailendra Singh, Raghvendra Kumar Rai   +3 more
doaj   +1 more source

A Wideband Circularly Polarized Microstrip Patch Antenna With Embedded Shielding Package Based on Quarter-Mode Substrate Integrated Waveguide Feed

IEEE Access, 2020
In this paper, the feasibility of using the half-mode/quarter-mode of a substrate integrated waveguide (HMSIW/QMSIW) cavity to feed microstrip patch antennas (MPAs) is explored; based on this, a circularly polarized (CP) MPA fed by the sequential ...
Kai Sun, Yue Tang, Sihao Liu, Jin Pan, Deqiang Yang   +4 more
doaj   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, Volume 11, Issue 13, 8 July 2026.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

A FDTD model for the post-reception synthetic focusing surface penetrating radar with mine detecting applications [PDF]

, 1999
Surface penetrating radar (SPR) is extensively used in military, civil, geophysical and archaeological applications. There has been an increasing emphasis on the use of SPR in the identification of buried unexploded ordnance, such as anti-tank mines ...
Nilavalan, R, Benjamin, R, Hilton, GS
core   +1 more source

Highly Vertically Oriented Graphene Microstrip Pads With Ultrahigh Through‐Plane Thermal Conductivity and Ultralow Compressive Modulus for Efficient Heat Dissipation

Advanced Science, Volume 13, Issue 39, 13 July 2026.
Vertically aligned graphene microstrip pads (GMPs) break the traditional thermomechanical trade‐off in thermal interface materials. It simultaneously achieves an ultrahigh through‐plane thermal conductivity of 565.92 W m−1 K−1 and an ultralow compressive modulus below 115.16 kPa.
Xu Ran, Yaru Wang, Sijia Wu, Hejun Wang, Junhao Shen, Litao Sun, Xing Wu, Hengchang Bi   +7 more
wiley   +1 more source

Microwave microscopy applied to EMC problem: Visualisation of electromagnetic field in the vicinity of electronic circuit and effect of nanomaterial coating

Advanced Electromagnetics, 2017
This proposal is devoted to a collaborative approach dealing with microwave microscopy experiments. The application is dedicated to an electromagnetic field cartography above circuits and the influence of nanometric material layer deposition on the ...
J. Rossignol, D. Stuerga, G. Bailly, A. Harrabi, S. Girard, S. Lalléchère   +5 more
doaj   +1 more source

Time‐Domain Simulator for Nonuniform Transmission Lines: An Educational Tool

Computer Applications in Engineering Education, Volume 34, Issue 4, July 2026.
ABSTRACT The study of transmission lines is a key topic in electrical and electronic engineering education. However, their theoretical formulation can be complex, often hindering students' understanding of the underlying physical phenomena. In contrast, transmission lines exhibit intuitive and engaging behaviors. To address this challenge, we developed
Ruben Tic, Fulvio Babich, Massimiliano Comisso, Francesca Vatta, Giulia Buttazzoni   +4 more
wiley   +1 more source

Investigation of Aperture Coupled Microstrip Antenna to Obtain a High Efficient Active Integrated Antenna by Using Class F and Inverse Class F Power Amplifiers [PDF]

, 2013
In wireless communications and radar systems, there are requirements for high efficiency, small size, low cost, and wide bandwidth of transmitter front –end usage for commercial and also military applications.
Liu, Lei
core  

The inclusion of fringing capacitance and inductance in FDTD for the robust accurate treatment of material discontinuities [PDF]

, 2000
The analysis of structures, which contain sharp material discontinuities using the finite-difference time domain method (but without resorting to a very fine mesh) although much researched, has not yet been definitively solved.
Railton, CJ
core   +1 more source