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Now showing items 1461-1470 of 1486
Design of single layered circular and rectangular U-slotted, CPW-fed antennas and arrays for RFID applications
(Institute of Electrical and Electronics Engineers (IEEE), 2010-05-26)
This work describes the design of high gain, U-slot antennas for RFID 915 MHz (902-
928 MHz) applications. Four types of antenna were designed, optimized and evaluated -
a circular, U-slotted antenna, a rectangular ...
Lipase production from Jatropha curcas solid waste
(Universiti Malaysia Perlis (UniMAP), 2010-10-16)
Lipases produced by using agro-industrial residual or waste as substrate become interesting topic among the researchers. The aim of this study was to produce lipases by valorization the Jatropha solid waste as substrate ...
Site-specific evaluation of a MIMO channel capacity for multi-antenna mobile terminals in proximity to a human hand
(The European Association on Antennas and Propagation (EurAAP), 2011-04-10)
This paper presents a comprehensive evaluation on the Multiple-Input Multiple-Output (MIMO) channel capacity performance of a coupling element -based multi-antenna structures on a mobile terminal at the 2000 MHz Universal ...
Ambiguity analysis of isolation - Based multi-antenna structures on mobile terminal
(Institute of Electrical and Electronics Engineering (IEEE), 2011-04-10)
This paper presents a comprehensive numerical study on the ambiguities for different isolation-based multi-antenna structures. The focus is on four-element planar inverted-F antennas (PIFA) array on a typical 100mm 40mm ...
Reflection loss performance of hexagonal base pyramid microwave absorber using different agricultural waste material
(Institute of Electrical and Electronics Engineers (IEEE), 2010-11-08)
Hexagonal base pyramid microwave absorber is the new design of microwave absorber. In this work, two sub-shapes are considered to compare it reflection loss performance. The shapes are hexagonal and truncated hexagonal ...
Metamaterial entrenched circular microstrip antenna for Malaysia HAPS
(Institute of Electrical and Electronics Engineers (IEEE), 2010-04-12)
A circularly microstrip antenna (CMSA) with its related geometry intended for 5850-7075
MHz Malaysia HAPS operating band are presented here. Construction are made into
three layers having layer three surface copper ...
Optimized SFCW radar sensor aiming at fall detection in a real room environment
(Institute of Electrical and Electronics Engineers (IEEE), 2013-01)
An optimization of a Stepped-Frequency Continuous Wave (SFCW) radar for contactless fall detection and tag-less localization is presented and discussed. Wideband antennas with different topologies are investigated to solve ...
Microwave wedge absorber design using rice husk - An evaluation on placement variation
(Institute of Electrical and Electronics Engineers (IEEE), 2010-04-12)
Placement variation is one example of parameters
that critically affects the performance of RF absorbers. In this
work, four designed variation patterns - W, X, Y, and Z were
discussed to compare the reflectivity (Sll) ...
Investigation on the CCSRR influences towards CSMA with air gap for HAPS
(Institute of Electrical and Elctronics Engineering (IEEE), 2010)
A circular profile microstrip antenna and its related structural dimensions meant for 5850 -7075 MHz Malaysia HAPS operating band are investigated here. Appearing by three layers and having layer three surface copper ...
Investigation of complementary split ring resonators with dielectric ring
(Institute of Electrical and Electronics of Engineering (IEEE), 2010-11-08)
This paper present development in relation to a wideband antenna comprising a disk antenna and a plurality of circular split ring resonators coupled with a high dielectric ring. Using slotted resonators together with ...