Results 51 to 60 of about 1,055 (144)

Millimeter‐Wave Antennas: A Comprehensive State‐of‐the‐Art Review of Design Approaches, Operating Bands, Challenges, and Applications in Body‐Centric and Emerging Systems

Radio Science, Volume 61, Issue 5, May 2026.
Abstract This paper reviews and classifies more than 120 recent contributions on millimeter‐wave (mm‐wave) antennas, with emphasis on their operating bands, design methods, and application domains. It surveys the main mm‐wave frequency ranges and their use in 5G/6G communications, radar and sensing, biomedical and body‐centric systems, imaging, and ...
Sarra Khacha, Chemseddine Zebiri, Mohammad Alibakhshikenari, Djamel Sayad, Issa Elfergani, Muhammad Akmal Chaudhary, Nisar Ahmad Abbasi, Arpan Desai, Jonathan Rodriguez, Takfarinas Saber, Ernesto Limiti   +10 more
wiley   +1 more source

Analysis of Antenna Radiation Characteristics Using a Hybrid Ray Tracing Algorithm for Indoor WiFi Energy-Harvesting Rectennas

IEEE Access, 2019
In this paper, the radiation features of indoor WiFi energy-harvesting antennas are analyzed, and the design guidelines that enhance receiving power are proposed.
Yen-Sheng Chen, Fei-Peng Lai, Jing-Wei You   +2 more
doaj   +1 more source

High Gain Array Antenna for Radio Frequency Energy Harvesting in Internet‐of‐Things Applications

Radio Science, Volume 61, Issue 4, April 2026.
Abstract Wireless sensor networks are increasingly deployed in Internet of Things (IoT) applications, demanding self‐powered solutions to overcome the limitations of conventional batteries. Radio frequency energy harvesting (RFEH) offers a practical means to scavenge ambient RF power from ubiquitous sources such as mobile base stations, enabling ...
Muhammad Saleem, William O. F. Carvalho, Muhammad Irfan   +2 more
wiley   +1 more source

Mid‐Infrared Integrated Photonics: Material Platforms and Emerging Applications

Laser &Photonics Reviews, Volume 20, Issue 6, 18 March 2026.
Mid‐infrared (MIR) integrated photonics enables advanced chemical and biological sensing through the unique absorption features of molecules in the 2–20 µm range. This review highlights recent material advances such as chalcogenide glasses, silicon, and graphene and explores MIR applications in environmental monitoring, medical diagnostics ...
Muhammad Ali Butt, Daniel Pastor Abellán, Ryszard Piramidowicz   +2 more
wiley   +1 more source

Cavity-Resonance-Enabled Wireless Power Transfer System With Compensation for Frequency Fluctuations Caused by Equipment Installation and Its Operation

IEEE Journal of Microwaves
We present a cavity resonance-enabled wireless power transfer (CR-WPT), in which the resonant frequency can be adjusted using a monopole probe with a reactance circuit (reactance probe).
Masaya Tamura, Aoi Ide
doaj   +1 more source

MIM‐Diode‐Like Rectification in Lateral 1T/1H/1T‐MoS2 Homojunctions via Interfacial Dipole Engineering

Advanced Electronic Materials, Volume 12, Issue 3, 4 February 2026.
The metallic 1T and semiconducting 1H phases of MoS2 enable phase‐engineered 1T/1H/1T homojunctions that exhibit MIM‐diode‐like rectification without dissimilar electrodes. Asymmetric 1T/1H interfaces induce interface dipoles and a built‐in potential drop across the 1H barrier, creating a trapezoidal tunnel barrier at zero bias and yielding diode‐like ...
Elias Eckmann, Ersoy Şaşıoğlu, Nicki F. Hinsche, Ingrid Mertig   +3 more
wiley   +1 more source

Metal–Insulator–Insulator–Metal (MIIM) Ag/SnO2/Al2O3/Ag Diodes Fabricated by Ultraprecise Dispensing and Atomic Layer Deposition

Advanced Electronic Materials, Volume 12, Issue 4, 18 February 2026.
This study introduces a new method for fabricating MIIM diodes using ultra‐precise dispensing printing techniques combined with ALD. Thus, it provides a practical alternative to traditional lithography. The fabricated diode, with a contact area of 5.4 µm × 4.0 µm exhibits a tunneling current in the microampere range, a zero‐bias responsivity of −1.31 A/
Aboubacar Savadogo, Klaus Huska, Rohit D. Chavan, Thomas Nyachoti Nyangonda, Jan Feßler, Bernard Odhiambo Aduda, Ulrich Wilhelm Paetzold, Uli Lemmer, Mohamed Hussein   +8 more
wiley   +1 more source

Real-World Performance of Sub-1 GHz and 2.4 GHz Textile Antennas for RF-Powered Body Area Networks

IEEE Access, 2020
In Radio Frequency (RF)-powered networks, peak antenna gains and path-loss models are often used to predict the power that can be received by a rectenna.
Mahmoud Wagih, Oktay Cetinkaya, Bahareh Zaghari, Alex S. Weddell, Steve Beeby   +4 more
doaj   +1 more source

160 GHz Schottky Diodes from Solution‐Processed IGZO

Small, Volume 22, Issue 10, 17 February 2026.
A simple, scalable method for contact engineering of planar asymmetric nanogap electrodes enables the development of Schottky diodes with a cut‐off frequency of 160 GHz. Applying these diodes to radio‐frequency rectifying circuits yields output voltages in the range of 0.3–0.74 volts.
Lazaros Panagiotidis, Hendrik Faber, Yiyang Yu, Spyridon Doukas, Linqu Luo, Mohammed Ghadiyali, George T. Harrison, Dipti Naphade, Suman Mandal, Wejdan S. Alghamdi, Harold F. Mazo‐Mantilla, Temur Maksudov, George S. Pappas, Udo Schwingenschlögl, Shadi Fatayer, Elefterios Lidorikis, Atif Shamim, Thomas D. Anthopoulos   +17 more
wiley   +1 more source

The State of Dynamic and Wireless In‐Motion Power Delivery to Grounded Mobile Robots

IET Cyber-Systems and Robotics, Volume 8, Issue 1, January/December 2026.
ABSTRACT This work reviews efforts to develop systems for in‐motion wireless power delivery, that is, the transmission of energy to moving receivers (RX) through untethered interaction. The application in focus is supplying small‐to‐medium‐sized grounded mobile robots, but the insights extend beyond this context and the review serves as a platform for ...
Nicklas Vraa, Uffe Jakobsen, Mohammad Hassan Khooban   +2 more
wiley   +1 more source