Results 71 to 80 of about 35,400 (275)
Microstrip patch antenna array for range extension of RFID applications [PDF]
, 2008 In this paper, an UHF band 2X2 microstrip phased antenna array is designed for extending the range of an RFID reader system. The phased antenna array operates at the frequency of 867 MHz, as specified in Gen2 protocol European standards.
Abbak, Mehmet +2 more
core +1 more source
FlexMat, EarlyView.Abstract Soft robots, engineered from highly compliant materials, offer superior adaptability and safety in unstructured environments compared to their rigid counterparts. Recent advancements, fueled by bio‐inspiration and material programmability, have led to the rapid co‐evolution of their core modules: actuation, sensing, protection, energy, and ...
Qiulei Liu +3 more
wiley +1 more source
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
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
Bandwidth Enhancement on Microstrip Rectangular Patch Antenna with Electromagnetic Band Gap Structure for Wi-fi Application [PDF]
, 2015 Use of microstrip patch antenna is very popular, but microstrip patch antenna suffer from a number of disadvantages such as narrow bandwidth. In this paper, a planar Electromagnetic Band-Gap (EBG) structures are used for further enhances the antenna ...
Dr. Zuhairiah Binti Zainal Abidin, Gede Surya Adhi D., Rudy Yuwono, S.T., M.Sc
core
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
Analysis of an air-spaced patch antenna near 1800 MHz [PDF]
, 2011 Microstrip antennas are a type of printed antenna which consists of a patch on top of a grounded substrate. A major limitation for the performance of the patch antenna is the dielectric substrate.
Akouemo Kengmo Kenfack, Hermine Nathalie
core +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
Low‐profile millimetre‐wave wideband microstrip antenna with parasitic patch arrays
IET Microwaves, Antennas & Propagation, 2021 A millimetre‐wave low‐profile wideband microstrip antenna is proposed. To widen impedance bandwidth and achieve stable large gain simultaneously, coplanar parasitic patch arrays are arranged on both sides of a microstrip patch fed by a coaxial probe ...
Mei Xue +3 more
doaj +1 more source