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Now showing items 2421-2430 of 2460
Design of a Flexible Minkowski-Like Pre-Fractal (MLPF) antenna with different ground planes for VHF LMR
(City University of Hong Kong, 2011-03-07)
This work investigates the suitability of a flexible Minkowski-like pre-fractal antenna (MLPF) for
application in the Very High Frequency (VHF) Land and Mobile Radio (LMR) frequency bands (136-174 MHz). The
proposed ...
Design and fabrication of a flexible Minkowski fractal antenna for VHF applications
(Institute of Electrical and Electronics Engineers (IEEE), 2011-04-10)
This work investigates the design of a flexible Minkowski fractal antenna. Two potential materials are included for examination - conductive copper tape and ShieldIt conductive textile. Both are designed and simulated to ...
Design and simulation of a Sierpinski Carpet Fractal PIFA for WLAN and HiperLAN application
(Institute of Electrical and Electronics Engineers (IEEE), 2010-11-09)
This paper describes the design and simulation
of Sierpinski Carpet Fractal Planar Inverted F Antenna
(PIFA) for WLAN and HiperLAN applications. Simulation
of antenna is carried out using CST software; on a FR4
board ...
Design and simulation of a modified Minkowski fractal antenna for Tri-Band application
(Institute of Electrical and Electronics Engineers (IEEE), 2010-05-26)
This work presents a novel tri-band Minkowski planar antenna, using a modified planar monopole-shaped ground plane. The fractal structure is advantageous in generating multiple resonances, while the modified ground plane ...
Design and analysis of an UTeM antenna
(Institute of Electrical and Elctronics Engineering (IEEE), 2010-04-12)
Meander line antenna design with parasitic element was investigated. The overall antenna design structure referred to the UTeM logo. This antenna has been designed to operate at 2.4GHz which are specified by IEEE 802.11b/g ...
Microstructure studies on the effect of the alkaline activators of fly ash-based geopolymer at elevated heat treatment temperature
(Trans Tech Publications, 2013)
Fly ash-based geopolymers are new binding materials produced to replace the ordinary Portland cement (OPC) used in concrete. In this research, the effect of alkaline activators on the compressive strength and the microstructure ...
Bonding strength characteristics of FA-based geopolymer paste as a repair material when applied on OPC substrate
(MDPI AG, 2020-05)
This investigative study aims to study the mechanical and morphological properties of fly
ash (FA)-based geopolymer paste as a repair material when applied on ordinary Portland cement
(OPC) overlay concrete. The first ...
Study on radioactivity components, water quality and microstructure characteristic of volcano ash as geopolymer artificial aggregate
(SYSCOM 18, 2013-06)
The assessments of radioactivity, water qualitytesting and microstructure characteristic of volcano ash have been examined. The measurement of the 226Ra, 232Th, 40K, and 238U were carried out using radioactive concentration ...
Feasibility of producing wood fibre-reinforced geopolymer composites (WFRGC)
(Trans Tech Publications, 2013)
Wood fibres have long been known as a fibre reinforcement for concrete. Due to its availability and low production cost, this natural fibre has been used in less developed country where conventional construction materials ...