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This paper presents a novel way to design dual-frequency slot antenna based on substrate integrated waveguide (SIW) in millimeter wave range. The existing of first two modes in SIW resonator, TE101 and TE102 modes, ensure that slot cuts the current of two modes at the same time which leads to a dual-frequency performance of the slot antenna. The proposed antenna resonates at 25.8 GHz and 31.5 GHz...
The measurement of a hundred-watt level 2.45 GHz near-field rectenna with a two-layered structure is presented. The large power capacity of the rectenna is realized by assigning the input microwave power with a power divider and using Schottky diodes array. A 2×4 sub-array, namely 16 rectenna elements, constructs the receiving sub-system. In a near-field wireless power transmission system, a regulated...
In this paper, a function testing size estimation model based on testing steps is proposed. The model applies to black boxtesting, and can be used in dependent test as a third party, This model is conducted overall analysis on COCOMO model. Its basic steps include: design test cases, sum total test steps, define the parameters in the model based on the pattern of model, define size factor, and calculate...
The paper explores a new method of the heating measurement and charging in the central heating system. The method is different from mechanical heat metering and ultrasonic heat metering existing now. However, by measuring the indoor temperature and recording the temperature periodically during the heating period, and upload the data which are measured and stored in the terminal to the PC for analyzing...
Based on ABAQUS modeling platform, simplified modeling of pipeline interface in different directions of water supply network in KGWL zone was conducted, where finite element analysis was as the basic modeling approach. Then dynamic analysis was taken when a known seismic/earthquake wave was input. Through analysis of simulation results, the basis of earthquake damage on pipe interface was determined...
Firstly, the characteristics of tacit requirements are analyzed. Then the knowledge conversion of requirement elicitation from socialization to externalization, to combination and to internalization are exported according to SECI Spiral Model. These processes are processes dealing with tacit and explicit requirements. And when analyzing the knowledge flow, we find that the bottleneck of requirement...
Based on the relationship exchange theory, we categorize the characteristics of IT outsourcing partnership into six dimensions by reviewing and analyzing the literatures. There are trust, flexibility, communication, cooperation, management, risk and benefit share. Based on the six characteristics of partnership, competent and environmental factors including providerpsilas factors, customerpsilas factors...
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