Results 91 to 100 of about 984,557 (317)
A Compact Spin‐Coated Graphene UWB Antenna for Breast Tumor Detection
Advanced Engineering Materials, EarlyView.A compact, spin‐coated graphene ultra‐wideband patch antenna designed for breast tumor detection, capable of distinguishing between malignant and benign tumors. This innovative antenna can serve as an effective initial screening tool, particularly in resource‐limited settings such as rural areas, where access to advanced medical equipment like MRI and ...
Raja Rashidul Hasan +9 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
Graphene in Millimeter Wave Devices
, 2014 We present work on graphene devices and circuits for microwave and millimeter wave applications, including detectors, mixers and microwave amplifiers.
Audrey Zak +14 more
core +1 more source
A Wideband Tunable Power Divider for SWIPT Systems
IEEE Access, 2020 A two-way tunable power divider for Simultaneous Wireless Information and Power Transfer (SWIPT) is proposed in this paper. The power divider divides the incoming power in such a way that maximum power is utilized for energy harvesting purposes and the ...
Sana Ilyas +3 more
doaj +1 more source
Passive RFID at Millimeter Waves
IEEE Transactions on Microwave Theory and Techniques, 2011 This paper introduces a novel way to implement passive RF identification (RFID) at millimeter waves. Passive operation is achieved by adding an external mixing element between the tag antenna and a standard RFID chip. The mixing element converts the RFID reader signal from millimeter waves to RFID carrier frequency-the RFID chip operates as usual ...
Donzelli, Francesco +3 more
openaire +1 more source
Advanced Engineering Materials, EarlyView.Mg–Zn composites with a thickness of 0.21 mm were fabricated using roll bonding of a kirigami‐patterned Mg alloy inlay within a Zn matrix. Thermal activation following this process led to the formation of tailored intermetallic structures, which provided the composite with enhanced flexural strength.
Yaroslav Frolov +4 more
wiley +1 more source
Artificial dielectric devices for variable polarization compensation at millimeter and submillimeter wavelengths [PDF]
, 2003 Variable polarization compensation has been demonstrated at 100 GHz. The device consists of two interlocking V-groove artificial dielectric gratings that produce a birefringence that varies with the separation distance. A maximum retardance of 74/spl deg/
Blaikie, R.J. +7 more
core +1 more source
Advanced Engineering Materials, EarlyView.A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares +3 more
wiley +1 more source
Integrated Circuit Signal Generation and Detection Techniques for Microwave and Sub-Millimeter Wave Signals [PDF]
, 2012 The unabated reduction of device feature sizes in semiconductor processes, particularly in complementary metal-oxide semiconductor (CMOS) processes, has served as the enabling factor behind integrated electronic systems of ever increasing complexity and ...
Bohn, Florian
core +1 more source
Continuously Tunable Millimeter Wave MEMS Phase Shifter
, 2007 This paper presents the development of an analog distributed MEMS transmission line (DMTL) phase shifter for micro- and millimeter wave applications. Also, an improved design for a MEMS varactors is presented.
T. Vähä Heikk +4 more
core +1 more source