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This paper investigates the development of branchline coupler using parallel coupled transmission lines on planar microstrip using CST Studio Suite 2010 design tool. This project operates within 4 GHz to 8 GHz frequency band. Two designs are proposed in this project which are basic branch line coupler and branch line coupler with parallel line feeding technique. The main purpose of this study is to...
Microfluidic structures are devices that are able to control fluids in the scale of micrometer and have been widely adapted in the application of lab-on-chip. There are many methods of producing microfluidic structures, with soft lithography and laser micromachine are the commonly reported techniques. This paper reports on the experiments conducted to investigate the formation of microfluidic structure...
A homogeneous film of acid functionalized Carbon Nanotubes was deposited on the paper substrate using Langmuir-Blodgett technique. The palladium nanoparticles were dropped on the nanotubes network afterword for device enhancement. The sensitivity of the device towards hydrogen gas was tested at three temperatures; room temperature, 200 °C and 300 °C in atmospheric conditions. The results show that...
This paper presents the design and optimization of high quality (Q) factor inductors using Micro Electro-Mechanical Systems (mEMs) technology for 10GHz to 20GHz frequency band. Two inductors have been designed with square and circular topologies. Inductors are designed on Silicon-on-Sapphire (SOS) because of its advantages including high resistivity and low parasitic capacitance. The effects of various...
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