Results 101 to 110 of about 29,904 (298)

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

Advanced Materials Technologies, EarlyView.
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

An Overview of Polarization, Frequency and Beam Reconfigurable Antennas

IEEE Access
Reconfigurable antennas dynamically alter intrinsic radiation parameters such as polarization, operating frequency, and beam steering. Their relevance has rapidly increased in recent years to support multiple satellite constellations and to mitigate ...
Filipa Antunes, Amelia Ramos, Tiago Varum, Joao N. Matos   +3 more
doaj   +1 more source

RHOMBUS SHAPED RECONFIGURABLE MICROSTRIP ANTENNA FOR CDMA WIRELESS APPLICATIONS [PDF]

ICTACT Journal on Communication Technology, 2015
Rhombus Shaped Reconfigurable microstrip antenna is designed to operate at 1.74GHz. The proposed antenna is a Rhombus shaped microstrip antenna which gives a good size reduction with good impedance bandwidth in terms of with and without capacitor.
K. Madhusudhana, S. Jagadeesha
doaj  

An ohmic RF MEMS switch for reconfigurable microstrip array antennas built on PCB [PDF]

, 2008
This paper presents the analysis, design and simulation of an ohmic RF MEMS switch specified for reconfigurable microstrip array antennas built on PCB via an integrated monolithic technology.
Charalampidis, N, Kampitaki, D, Mallios, N, Nilavalan, R, Soel, P, Spasos, M, Tsiakmakis, K   +6 more
core  

Sinusoidally-Modulated Graphene Leaky-Wave Antenna for Electronic Beamscanning at THz

, 2014
This paper proposes the concept, analysis and design of a sinusoidally-modulated graphene leaky-wave antenna with beam scanning capabilities at a fixed frequency.
Esquius-Morote, Marc, Gomez-Diaz, Juan Sebastian, Perruisseau-Carrier, Julien   +2 more
core   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Review on Multifunctional Pattern and Polarization Reconfigurable Antennas

IEEE Access
This paper presents a detailed review of multifunctional pattern and polarization reconfigurable antennas, highlighting their potential to enhance performance of the wireless communication systems. These adaptable antennas offer versatile functionalities,
Venkataswamy Suryapaga, Vikas V. Khairnar   +1 more
doaj   +1 more source

Adaptive Carbon Nanotube Patches for Versatile Electronic Textiles and Wind‐Harvesting Applications

Advanced Materials Technologies, EarlyView.
An adhesion‐tunable electronic textile patch based on a carbon nanotube/paraffin composite is presented, enabling direct, adhesive‐free integration with fabrics. Pressure‐responsive bonding allows reversible or permanent attachment on demand.
Seokwon Joo, Yang‐Hu Park, Da‐Seul Kim, Ju‐Hyung Kim, Yoon‐Kyu Song   +4 more
wiley   +1 more source

A novel reconfigurable band-notched ultra-wideband slot antenna for cognitive radio systems

Dianzi Jishu Yingyong, 2019
A novel printed ultra-wideband(UWB) slot antenna with reconfigurable band-notched characteristics for cognitive radio(CR) applications is presented. An improved rectangular monopole antenna is used as the basic model and a tangential rectangular floor is
Lv Xinmeng, Jiang Xuanyou, Ma Wentao, He Wanbing   +3 more
doaj   +1 more source

Tunable Extraordinary Optical Transmission in the Long‐Wavelength Infrared Range Using Electrostatic MEMS Actuation

Advanced Materials Technologies, EarlyView.
A MEMS‐integrated metamaterial filter enables continuous, low‐voltage spectral tuning in the long‐wavelength infrared (LWIR). The device employs extraordinary optical transmission in a dual suspended metasurface stack, where electrostatic actuation precisely controls the intermembrane air gap.
Oleg Bannik, Fedor Kovalev, Michal Zawierta, Dilusha Silva, Lorenzo Faraone, Ilya Shadrivov, Mariusz Martyniuk   +6 more
wiley   +1 more source