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Managers at NPD departments of Taiwan consumer electronic industry were interviewed to explore the effects innovation strategy (IS) has on design strategy (DS) and finally on product design characteristics (DC). The fitness of theoretical models and the observed data was examined. A questionnaire survey was conducted. 1300 enterprises in Taiwanconsumer electronic industry were randomly selected as the survey pool. At last, 370 effective questionnaires were collected. Their responses on the questionnaires were analyzed to test the fitness of the model with structural equation modeling analysis (SEM). A proper fitness was found for the correlation theoretical model of IS, DS, DC, and the observed data. In enterprises, IS will influence product DC, and at the same time, IS will influence product DC through DS. Among these three variables, DS serves as an independent variable and intervene variable to DC.
This paper describes a novel
methodology to design PIFA (Planar Inverted-F Antenna) antennas based on
parametric simulations. The parameters considered in the parametric design are ground plan
dimensions, height of radiating plate, feeding point position, shorting plate
width and position. The choice of the parameters that must be varied independently
or simultanously is important to design optimized antenna. The author studied two scenarios in
precedent works [1,2]. He exposes here a third scenario of
varing antenna parameters to design and simulate by HFSS (High Frequency Simulator Structure) simulator a probe-fed dual band PIFA
for the use in GSM 850 band (824 MHz - 894 MHz) and PCS 1900 band (1850 MHz - 1990 MHz). The author compares the three
scenarios and establishes a novel methodology to design optimized and
miniaturized antennas mounted on mobile handsets.