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The IEEE 802.15.4/Zigbee protocol stack has been considered as a promising technology for Wireless Sensor Networks (WSN). IEEE 802.15.4 Low-Rate Wireless Personal Area Network (WPAN) standard specifies the lower protocol layers—the physical layer (PHY), and the media access control (MAC) portion of the data link layer (DLL) and Network layer(NWK) Wireless(More)
With the rapid development of wireless communication systems, the multiple separated frequency bands antenna has become one of the most important circuit elements and attracted much interest. various antennas for wide band operation have been studied for communication and radar systems. The design achieves a good input impedance match and linear phase of(More)
Automation of libraries has become essential for efficiently managing all library operation and services. Nowadays many software packages are available in the market place. The article describes the library automation, advantage, need and some software packages of library automation and outlined the library areas in which the library have benefits from the(More)