Results 71 to 80 of about 8,259 (312)

An RF switching circuit using PIN diode for a 2.4GHz frequency reconfigurable antenna [PDF]

, 2018
This paper discusses the design of an RF switching using PIN diode for a 2.4GHz polarization reconfigurable antenna. The PIN diode in a switching circuit requires an accompanying PIN diode driver or switch driver that provides a controlled forward bias ...
Rosdiyana, Samad, N., Hassan, Nurul Hazlina, Noordin, Hwa, L. B., Zuwairie, Ibrahim   +4 more
core   +1 more source

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

Advanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen, Zhanxi Fan, Jingjie Ge, Qiyuan He, Zhuangchai Lai, Jiawei Liu, Chaoliang Tan, Hua Zhang   +7 more
wiley   +1 more source

An advanced VHDL-AMS PiN diode model: towards simulation-based design of power converters [PDF]

, 2015
International audienceThis paper focuses on the modeling of a power PiN diode. The focal point basis is the dependence on temperature. The PiN diode remains a difficult device to model mainly during switching transients. An advanced PiN diode temperature-
Tarek Ben, Salah, Morel, Hervé, Kourda, Ferid, Mtimet, Sameh, Ben Salah, Walid   +4 more
core   +1 more source

Small Square Reconfigurable Antenna with Switchable Single/Tri-Band Functions [PDF]

Radioengineering, 2016
A novel frequency reconfigurable slot antenna for suitable switchable radiations at WLAN and a tri-band at Bluetooth, WiMAX and upper WLAN applications is designed and fabricated.
M. Borhani Kakhki, P. Rezaei, V. Sharbati, M M. Fakharian   +3 more
doaj  

Space‐Time Coding Conformal Metasurfaces for Multifrequency Beam Steering and Shaping

Advanced Materials, EarlyView.
Space‐time coding conformal metasurfaces enable dynamic wave control on curved surfaces by combining programmable spatial patterns with temporal modulation. This study shows that a single conformal aperture can independently manipulate multiple frequency components, achieving multifunctional beam shaping and steering, with implications for ...
Filippo Pepe, Lei Zhang, Yi Ning Zheng, Xiao Qing Chen, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Tie Jun Cui, Vincenzo Galdi   +8 more
wiley   +1 more source

Modelling PIN diode switches in reconfigurable leaky-wave antenna design [PDF]

, 2013
The effect of PIN diodes on the performance of a reconfigurable leaky-wave antenna (LWA) is studied. The PIN diode is modelled in three different ways.
Karmokar, D.K., Heimlich, M., MATEKOVITS, Ladislau, L. Matekovits, Matekovits, L, Karmokar, DK, Thalakotuna, DNP, M. Heimlich, Matekovits, L., Esselle, KP, Heimlich, M, K. P. Esselle, Esselle, K., Thalakotuna, D.N.P., D. K. Karmokar, D. N. P. Thalakotuna   +15 more
core   +1 more source

Operation Limits of Integrated Photo‐Rechargeable Batteries

Advanced Materials, EarlyView.
This study elucidates the operational limitations of integrated photo‐rechargeable batteries. We demonstrate that the photo‐charging process is fundamentally restricted not only by material‐to‐material energy level alignment but also by transient capacitive charge accumulation within the cathode framework.
Byung‐Man Kim, Arvind Pujari, Hooman Abbasi, Weidong Xu, Yutong Han, Samuel D. Stranks, Michael De Volder   +6 more
wiley   +1 more source

Pin diode characterization studies [PDF]

, 1967
Converstion efficiency, rectified current and impedance of a PIN diode were measured by using coaxial circuitry and slotted line in the microwave region. Conversion efficiencies were measured as a function of frequency at forqard and reverse bias.

core  

4H-SiC PIN Diode as High Temperature Multifunction Sensor [PDF]

, 2017
An in-house fabricated 4H-SiC PIN diode that has both optical sensing and temperature sensing functions from room temperature (RT) to 550 °C is presented.
Per Erik Hellström, Hellström, Per-Erik,, Zetterling, Carl-Mikael,, Mikael Östling, Östling, Mikael,, Carl Mikael Zetterling, Hou, Shuoben,, Shuo Ben Hou   +7 more
core   +1 more source

Origin of Dark Current Robustness in Photomultiplication Organic Photodetectors Enabled by Ionic Conjugated Electron‐Blocking Layers

Advanced Materials, EarlyView.
Ionic conjugated polyelectrolyte electron‐blocking layers enable photomultiplication organic photodetectors with dark current robustness up to −10 V and external quantum efficiencies exceeding 3000%. Fowler–Nordheim tunneling, interfacial dipole, trap density of states, and noise analyses reveal how ionic conjugated polyelectrolytes suppress electron ...
Yelim Kang, Min Hun Jee, Shuai Zhang, Sang Heon Lee, Jung Min Ha, Xingchao Zhao, Xiaoling Ma, Huiseong Shin, Changhwan Shin, Soonyong Lee, Fujun Zhang, Jae Won Shim, Han Young Woo   +12 more
wiley   +1 more source