Results 81 to 90 of about 535,313 (240)
Asian Journal of Organic Chemistry, Volume 14, Issue 6, June 2025.meso‐Free porphyrinoids are recognized as a versatile platform for further functionalization and oligomerization. The synthesis and characteristic features of such meso‐free porphyrinoids are reviewed. Abstract meso‐Unsubstituted (meso‐free) porphyrins have been an effective platform for creating versatile peripherally functionalized porphyrins and ...
Takayuki Tanaka +2 more
wiley +1 more source
Ground independent planar inverted-F antenna (PIFA) for very small mobile phone
, 2010 Copyright @ 2010 LAPCA small ultr-thin tri-band Planar Inverted-F Antenna (PIFA) is presented. The proposed antenna consists of slotted radiated parts supported by shorting walls and a ground plane.
AbuTarboush, HF, Nilavalan, R, Peter, T
core
IEEE Access, 2019 In this paper, a two efficient Planar Inverted-F Antenna (PIFA) system for dual-band functionality on fourth-generation (4G) band (2.5-2.7 GHz) and future fifth-generation (5G) band (3.4-3.8 GHz) is presented. During the optimization process, in order to
Mohammad A. Fakih +5 more
doaj +1 more source
A Linear Connected Printed Inverted‐F Antenna Array for 5G mm‐Wave MIMO Applications
Microwave and Optical Technology Letters, Volume 67, Issue 6, June 2025.ABSTRACT In this study, a linear connected printed inverted‐F antenna (PIFA) array (LCPA) configured for a multiple‐input multiple‐output (MIMO) system is presented for use in 5G mm‐wave applications. The design is compared with conventional antenna arrays to highlight the advantages of the proposed approach.
Muhammad Ikram, Hajra Khan
wiley +1 more source
Hilbert Fractal PIFA Antenna for DCS, PCS, UMTS and WiMAX Wireless Applications
, 2022 In this article, a novel quad-band fractal PIFA antenna design for DCS, PCS, UMTS, and WiMAX wireless communications systems is presented. The proposed antenna is a PIFA antenna where a slot having a Hilbert fractal shape at the third iteration has been ...
Noureddine Boukli Hacene +2 more
core +1 more source
Evolution of a Strategy for the Total Synthesis of the Ganoderma Meroterpenoid Ganoapplanin
ChemistryEurope, Volume 3, Issue 3, May 2025.Herein, the development of the first total synthesis of the Ganoderma meroterpenoid ganoapplanin is presented. Insights from unsuccessful approaches guide the design of an efficient route centered on a highly effective two‐component coupling. This key transformation involves an intramolecular 6‐exo‐trig radical addition of a quinone monoacetal ...
Nicolas Müller +9 more
wiley +1 more source
Multiband Fractal PIFA (Planar Inverted F Antenna) for mobile phones [PDF]
, 2010 A novel Fractal planar inverted F antenna F-PIFA based on the self affinity design is presented in this paper. The procedure for designing a Fractal Planar Inverted F Antenna is explained and the 2nd iteration of Sierpinski Carpet is chosen as an antenna
N. A. Saidatu +9 more
core +1 more source
Multishorting Pins PIFA Design for Multiband Communications
International Journal of Antennas and Propagation, 2014 A novel PIFA model with multiple shorting pins is proposed for multiband, low profile wireless applications, which has the ability to work in adverse conditions.
Muhammad Sajjad Ahmad +2 more
doaj +1 more source
The Relationship Between Dietary Patterns and the Epidemiology of Food Allergy
Allergy, Volume 80, Issue 3, Page 690-702, March 2025.ABSTRACT Food allergies are increasing globally, particularly in Asia; however, the etiologies of allergic diseases remain poorly understood despite comprehensive studies conducted across a variety of populations. Epidemiological research demonstrates that food allergy is more prevalent in Westernized or urbanized societies than in rural or developing ...
Agnes Sze‐Yin Leung +3 more
wiley +1 more source
Design of Multi-Mode Antenna Array for Use in Next-Generation Mobile Handsets
Sensors, 2020 In this study, a new design of a tri-band multiple-input–multiple-output (MIMO) antenna array is proposed for fifth-generation (5G) cellular systems.
Naser Ojaroudi Parchin +2 more
doaj +1 more source