Abstract: This study presents a coplanar waveguide (CPW)-fed planar monopole antenna. The proposed antenna is designed to operate from 0.5 to 3 GHz. The goal was to reduce the dimensions of the antenna through various design variations in the geometry of the Square Planar Monopole Antenna . Final Design consists os a Central Hole, Step Notches at the edges and Curved Base where radiating element is fed by the CPW.The Impedence and Radiation characteristics(Calculated and Measured) of the proposed monopole are presented and effect of the design variations are analyzed.

• Publication Date: 12-Mar-2012
• DOI: 10.15224/978-981-07-1847-3-429
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Abstract: Presentation using slideshow is an effective and attractive way to convey information in the digital world. There are various means to control slides which require devices like mouse, keyboard, or laser pointer etc. The disadvantage is one must have prior knowledge about the devices in order to operate them. This paper proposes a new method to control the slides during a presentation using bare hand. This method employs hand gestures given by the user as input. The gestures are identified by counting the number of active fingers and then slides are controlled. Unlike the conventional method for hand gesture recognition which makes use of gloves or markers or any other devices, this method does not require any additional devices and makes the user comfortable. The proposed method for gesture recognition does not require any database to identify a particular gesture. It gives better accuracy even in environments illuminated with different light sources like incandescent bulb, fluorescent

• Publication Date: 12-Mar-2012
• DOI: 10.15224/978-981-07-1847-3-434
• Views: 0
• Downloads: 0