Results 51 to 60 of about 2,042 (184)
Научно-технический вестник информационных технологий, механики и оптикиThis paper presents the design of a microstrip patch antenna based on a Square Split Ring Resonator (SSRR). Wireless technology is switching from 4G to 5G due to the need to overcome limitations, such as low throughput, high latency and path loss.
S. Kumari +4 more
doaj +1 more source
Loss Compensation and Coherent Virtual Absorption via Virtual Complex Frequency Wave Excitation
Nanophotonics, Volume 15, Issue 9, 13 May 2026.By establishing a mathematical bridge between real and complex frequencies, we present a general method for complex frequency wave excitation to obtain all electromagnetic responses at complex frequencies. Using properties of complex frequency waves, we compensate for the propagating loss of point sources and surface plasmon polaritons.
Sheng Zhang, Zhi Hong Hang
wiley +1 more source
Broadband microstrip patch antenna
Electronics Letters, 1998 The characteristics of a rectangular microstrip antenna with an L-shaped probe are investigated. A foam layer with a thickness of around 10% of the wavelength is used as the supporting substrate. An impedance bandwidth of 35% and an average gain of 7.5 dBi can be achieved. The radiation pattern is stable across the passband.
K.M. Luk, C.L. Mak, Y.L. Chow, K.F. Lee
openaire +1 more source
Advanced Science, Volume 13, Issue 28, 18 May 2026.This paper proposes a hierarchical reconfigurable metasurface architecture (HRMA) to achieve comprehensive electromagnetic parameter modulation and on‐demand polymorphic function switching. The reconfigurable metasurface is divided into a programmable core (PC) and scenario‐guided functional modules (FMs), exhibiting significant flexibility and ...
Lihao Zhu +11 more
wiley +1 more source
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 +4 more
wiley +1 more source
3.3 GHz microstip antenna design and analysis for different feeding methods
Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2013 This work presents design of microstrip patch antenna for operation at 3.3 GHz using five basic feeding techniques. The antenna was intended for use next generation wireless application such as WiMax.
Haydar Kütük +2 more
doaj +1 more source
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 +3 more
wiley +1 more source
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 +10 more
wiley +1 more source
THREE ANTENNAS DESIGN USED BY ULTRA-WIDEBAND WIRELESS SYSTEMS
Diyala Journal of Engineering Sciences, 2015 As there are many challenges in indoor and outdoor wireless propagation, high gain and sensitive antenna design plays crucial role in ultra wideband (UWB) small size systems.
RASHID A. FAYADH
doaj
Proximity Coupled Dual Antenna Design For X Band Applications
Журнал нано- та електронної фізикиThis paper presents the analysis and design of a proximity-coupled dual antenna for X-band applications. Proximity coupling, a widely used feeding technique, is employed to optimize the spatial allocation of the receiver antenna, resulting in a more ...
B. Sivashanmugavalli +3 more
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