Results 81 to 90 of about 4,898,698 (235)

Low-Profile, Wideband, and Decoupled Dual-Polarized Antenna Array Loaded With T-SRR, CNL, and DGS

open access: yesIEEE Open Journal of Antennas and Propagation
A dual-polarized antenna array loaded with hybrid decoupling structures is proposed in this article. This special hybrid decoupling method combines interception and neutralization to simultaneously suppress co- and cross-polarized mutual couplings over a
Shu-Wei Yu   +7 more
doaj   +1 more source

From Photoalignment to Structured Light: Liquid Crystal Platforms for Beam Shaping and Complex Wavefronts

open access: yesAdvanced Functional Materials, Volume 36, Issue 74, 14 September 2026.
Photoaligned and photopatterned liquid crystal platforms provide programmable control of optical phase, polarization, and spin‐orbit interactions, enabling compact generation of structured light and complex wavefronts. This review highlights how tailored molecular orientations transform simple beams into designed optical fields, opening versatile ...
Le Zhou   +6 more
wiley   +1 more source

A Review of Defected Ground Structure (DGS) in Microwave Design

open access: yes, 2014
: Electromagnetic bandgap (EBG) or alternatively called photonic band gap (PBG) structures have been attractive to obtain the function of unwanted frequency rejection and circuit size reduction.
Chirag Garg, Eep Kaur
core  

Role of Liquid Composition in the Transient Liquid Assisted Growth of Superconducting YBa2Cu3O7‐δ Films

open access: yesAdvanced Materials, Volume 38, Issue 51, 11 September 2026.
The Y supersaturation in the [Ba‐Cu(I/II)‐O] transient liquid composition is the driving force toward YBCO nucleation and growth in TLAG. Tuning the initial (Ba:Cu) molar ratio in the ink composition determines the YBCO epitaxial nucleation through supersaturation control.
Lavinia Saltarelli   +12 more
wiley   +1 more source

Microstrip-Line filters design using defected ground structure (DGS)

open access: yes, 2007
在各種微波傳輸線中,微帶線(microstip line)由於性質已被研究的十分徹底,等效介電係數與特性阻抗皆有對應的公式來推算,並且易於製作、價格便宜、易與其他種類傳輸線整合,因此成為最受歡迎的傳輸線之一。 而各種微帶線電路中,濾波器在通訊系統裡扮演十分重要的角色,其主要功能是把通帶頻段之外的其他頻率信號濾除,使傳送與接收的信號皆限制在操作頻段之內。傳統的微帶線濾波器設計,因為本身具傳輸線性質,因而大都會有二倍頻、或三倍頻之諧波產生;換言之這些二倍頻 ...
Jhong, Long-Sing, 鍾隆興
core  

Optimal antenna design for wireless energy harvesting system in ISM band

open access: yesResults in Physics
In this paper, three different techniques — Coplanar Waveguide (CPW), Via-less Electromagnetic Band Gap (EBG), and Defected Ground Structure (DGS) — are incorporated to enhance the performance of the designed microstrip patch antenna (MPA). The impact of
Yahya Albaihani   +4 more
doaj   +1 more source

High‐Mobility and Reliability Ultra‐Thin‐Channel Oxide Semiconductor Field‐Effect Transistors for Chip‐Interconnect‐Embedded Logic and Ferroelectric Memory

open access: yesAdvanced Materials, Volume 38, Issue 52, 16 September 2026.
BEOL‐compatible bilayer heterojunction oxide channel dual‐mode, memory‐logic ferroelectric transistor is fabricated to address long‐standing challenges of mobility and threshold voltage trade‐off by suppressing interfacial defects. This approach not only advances oxide semiconductors toward reliable high‐performance BEOL transistors but also opens new ...
Chun‐Kuei Chen   +12 more
wiley   +1 more source

Epitaxial MgSnN2 on 4H‐SiC (0001): An Earth‐Abundant Nitride for Green Optoelectronics and Photovoltaics

open access: yesAdvanced Optical Materials, Volume 14, Issue 36, 25 September 2026.
The importance of photovoltaics (PV) and optoelectronics based on new Earth‐abundant materials is increasing with the ever‐growing energy demand and the need to address it with sustainable material technology. The paper demonstrates good quality magnetron sputter epitaxy of the inexpensive and eco‐friendly semiconductor MgSnN2 for green gap ...
D. Gogova   +13 more
wiley   +1 more source

INVESTIGATING ON WIDEBAND MICROSTRIP BANDPASS FILTERS USING DEFECTED GROUND STRUCTURE (DGS)

open access: yes, 2014
Includes bibliographical references (pages 55-56).In the front-end trans-receiver of a communication system, a microwave filter is required to suppress some unwanted frequencies while pass some of the desired frequencies.
Dagar, Pankaj
core  

Beyond Conventional Ferroelectric Field‐Effect Transistors: Recent Advances in Materials, Architectures, and Functional Applications

open access: yesAdvanced Physics Research, Volume 5, Issue 9, September 2026.
Ferroelectric field‐effect transistors (FeFETs) are advancing beyond conventional memory transistors into multifunctional hardware platforms enabled by emerging ferroelectric materials, scalable architectures, and neuromorphic/optoelectronic functionalities. Through HfO2‐based, two‐dimensional, and organic ferroelectrics, FeFETs achieve CMOS‐compatible
Hyeseoung Lee   +3 more
wiley   +1 more source

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