Results 71 to 80 of about 30,584 (199)
Environmental and Ecological Monitoring with Biodegradable Technologies
Advanced Science, Volume 13, Issue 4, 19 January 2026.This review examines the development and application of wireless biodegradable sensors for environmental monitoring. It explores (bio)degradable materials, their degradation mechanisms in various environments, and non‐toxic fabrication techniques. Additionally, it addresses scalable production and sustainable powering solutions, emphasizing the high ...
Mohammad Javad Bathaei +7 more
wiley +1 more source
Microwave directional couplers [PDF]
, 2010 This document contains the study of "Microwave directional couplers". Initiating with a waveguiding system, we are looking for solutions of Maxwell's equations, then we focus on the TEM Transmission Lines and we introduce the microstrip lines that are ...
Sánchez Sierra, Carlos
core +1 more source
Quasi-optical SIS mixers with normal metal tuning structures [PDF]
, 1997 We recently reported (1996) a quasi-optical SIS mixer which used Nb/Al-oxide/Nb tunnel junctions and a normal-metal (Al) tuning circuit to achieve an uncorrected receiver noise temperature of 840 K (DSB) at 1042 GHz.
Bin, Mei +4 more
core +1 more source
Reducing crosstalk between microstrip lines using CSR structure
Engineering ReportsAiming at the problem of crosstalk between microstrip lines, a method of reducing crosstalk by using cross‐shape resonators (CSR) structures is proposed.
Yafei Wang, Chenlong Li, Xuehua Li
doaj +1 more source
Microstrip to parallel strip balun as spiral antenna feed [PDF]
, 2012 This paper presents the design and implementation of a microstrip to parallel strip balun which are frequently used as balanced antennas feed. This wideband balun transition is composed of a parallel strip which is connected to the spiral antenna and a ...
Coetzee, Jacob +2 more
core +2 more sources
Pneumatically‐Actuated Liquid Metal‐Based Frequency Reconfigurable Antenna
Advanced Science, Volume 13, Issue 5, 27 January 2026.A look at a flexible, frequency‐tuning antenna A Soft Solution: Introducing a new antenna design made with liquid metal composites. A Full Package: Combining flexible antennas with pneumatic actuators. End‐to‐End Control: Automatic reconfiguration according to signal strength.
Yiwen Song +6 more
wiley +1 more source
Low power CMOS iImage sensor for face recognition [PDF]
, 2020 Imaging system is suitable for different purposes, depending upon their final application. Digital cameras, camcorders, webcams, security cameras or infrared (IR) cameras are well-known imaging systems.
Chan, Kit Heng, Ruslan, Siti Hawa
core
Dielectrically shielded microstrip (DSM) lines
Electronics Letters, 1987 Microstrip lines can be shielded by a dielectric cover to reduce the radiation loss. Experiments carried out using ring resonators showed the insertion loss can be substantially reduced. The effective dielectric constant of these shielded microstrip lines was calculated by the variational method. The results agree very well with experiment.
K. Chang, J. Klein
openaire +1 more source
A Scalable and Integrated Reconfigurable Intelligent Surface
Advanced Electronic Materials, Volume 12, Issue 1, 7 January 2026.A scalable X‐band reconfigurable intelligent surface is presented using one‐bit phase‐tunable unit cells with integrated FPGA control. The RIS supports fast, high‐speed reconfiguration through WiFi, LAN, and USB interfaces and can be scaled to multiple tiles. The design achieves over 20 dBi broadside gain and reliable 2D beam steering in both elevation
Zaid Akram +6 more
wiley +1 more source
High power, broadband, coaxial to microstrip bi‐directional coupler in the VHF/UHF band
IET Science, Measurement & TechnologyBroadband couplers consist usually of multiple coupled lines that are each a quarter wave‐length long. Herein, in contrast to conventional methods, a short length of a microstrip line is coupled to a coaxial line.
Tohid Naeimi, Arash Ahmadi
doaj +1 more source