Results 81 to 90 of about 11,368 (233)

Multi-band antenna for different wireless applications

, 2009
A small multi-band compact antenna is presented. The antenna is designed on Roger RT/duroid 5880 with dielectric constant 2.2, multi-band operations is achieved by inserting a slot on the top patch. The antenna has wide impedance bandwidth at 1.2, 1.6, 2.
AbuTarboush, HF, Nilavalan, R, H. F. AbuTarboush, Al-Raweshidy, H, R. Nilavalan, H. S. Al-Raweshidy   +5 more
core   +1 more source

Enhancing Plateau Capacity of Binder‐Free and Self‐Supported Napkin‐Based Hard Carbon Anodes for Sodium‐Ion Batteries Via a Pre‐Oxidation Modulation Strategy

ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 3, May 2026.
Precise regulation of preoxidation time and carbonization temperature in biomass napkin‐derived hard carbon generates abundant closed pores and ultramicropores, significantly enhancing the capacity in the low‐potential plateau region (the high plateau capacity of 266 mAh g−1) and thereby achieving highly reversible sodium‐ion storage (395 mAh g−1 at 30 
Haoran Wang, Xinwei Li, Changsheng Ding, Haitao Feng, Yanfeng Gao   +4 more
wiley   +1 more source

Investigation on Metamaterial Antenna for Terahertz Applications

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
In this paper, the metamaterial based rectangular microstrip patch antenna is proposed and designed for THz applications. The circular split ring resonator is implemented as metamaterial. By incorporating metamaterial in the conventional microstrip patch
Amalraj Taksala Devapriya, Savarimuthu Robinson   +1 more
doaj   +1 more source

Microstrip patch array antenna

Electronics Letters, 1984
A microstrip array with mutual coupled rectangular patch radiators is described. By the avoidance of a corporate feeding network, advantages in the antenna performance and design are realisable. Experimental results are presented for both linearly and circularly polarised antennas which demonstrate the usefulness of this special antenna configuration.
H. Entschladen, U. Nagel
openaire   +1 more source

Accelerating Full‐Wave Antenna Optimization: An Adaptive Surrogate‐Assisted Differential Evolution Framework

Engineering Reports, Volume 8, Issue 5, May 2026.
An adaptive surrogate‐assisted differential evolution framework integrates machine learning‐based surrogate modeling with selective full‐wave electromagnetic validation to accelerate antenna optimization. A CST–Python workflow combines Latin‐hypercube sampling, cross‐validated model selection, and iterative dataset refinement to guide the search toward
Muhammad Farooq, Shahid Bashir, Mohammad Haseeb Zafar, Ruhul Amin Khalil   +3 more
wiley   +1 more source

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

DESIGN AND CHARACTERIZATION OF E-SHAPE MICROSTRIP PATCH ANTENNA FOR WIRELESS COMMUNICATION [PDF]

ICTACT Journal on Communication Technology, 2013
The area of microstrip antennas has seen some inventive work in recent years and is one of the most dynamic fields of antenna theory. The ever increasing need for mobile communication and the emergence of newer technologies require an efficient design of
R. Divya, M. Priya
doaj  

Experimental Evidence of Free Carrier Generation in 2D Hybrid Organic–Inorganic Perovskites

Advanced Optical Materials, Volume 14, Issue 14, 10 April 2026.
ABSTRACT Despite the significant potential of 2D hybrid organic–inorganic perovskites (2DHOIPs) for high‐efficiency optoelectronics application‐comparable to their 3D counterparts, the fundamental carrier photogeneration remains unclear. In contrast to conventional ultrafast optical property characterization, we use ultrafast photocurrent spectroscopy ...
Tuhin Ghosh, Pan Adhikari, Yao Gao, Apparao M. Rao, Dawen Li, Haimei Zheng, Ying Shi, Letian Dou, Jianbo Gao   +8 more
wiley   +1 more source

Design of a three port feed matching network for a dual-band and dual-polarized rectangular patch antenna [PDF]

, 2012
Circular polarised antennas are used in many wireless communication systems where it is necessary to have a wide bandwidth of the return loss and the axial ratio.
L. Liu, Korolkiewicz, Edward, Q. Lu, Nimbark, Vishal, V. Nimbark, E. Korolkiewicz, Lu, Qing, Liu, Lei   +7 more
core   +1 more source

Patch Antennas and Microstrip Lines

, 2010
Microstrip patch antennas have problems of low bandwidths. The aim of this chapter is to show various ways to overcome this problem by using various matching techniques for numerous patch antenna array schemes. Various approaches are used for estimating the figures of merit such as VWSR and the S11 parameter of such antennas.
John R., Marc Peters
openaire   +2 more sources