The most important development in the computer communications industry in the 1990s is the evolution of the integrated services digital network (ISDN) and broadband ISDN (B-ISDN). The ISDN and B-ISDN have had a dramatic impact on the planning and deployment of intelligent digital networks providing integrated services for voice, data and video. Further, the work on the ISDN and B-ISDN standards has led to the development of two major new networking technologies; frame relay and asynchronous transfer mode (ATM). Frame relay and ATM have become t ....etc

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The ppt of the article ULTRA WIDEBAND is attatched in this section..
Hope you are satisfied with the article..
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dear admin
i would like to know how to create notch in ubw ....etc

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Abstract
This paper present the design of an S-band circular microstrip patch antenna using a conventional coaxial probe feed technique. The antenna is designed to function within the frequency range of 2.0 GHz - 2.5 GHz, S-band. The antenna exhibited a return loss of -16dB and a directivity of 6.07dB. The microstrip patch antenna is designed on FR4 epoxy substrate and is to be feed with a 50 coaxial cable. The design of the antenna is done using MATLAB software and SonnetLite software for the electromagnetic simula ....etc

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Design and development of X-band micro strip patch antenna

Introduction

In high-performance aircraft, spacecraft, satellite and missile applications, where size, weight, cost, performance, ease of installation, and aerodynamic profiles are constraints, low profile antennas may be required. These antennas should have low profile, conformable to planar and non-planar surfaces, simple and inexpensive to manufacture using modern printed-circuit technology, mechanically robust when mounted on rigid surfaces, compatible with MMIC designs, and w ....etc

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To get full information or details of band structure graphene please have a look on the pages

http://seminarsprojects.net/Thread-graphene-fet%E2%80%99s-promises-and-challenges

if you again feel trouble on band structure graphene please reply in that page and ask specific fields in band structure graphene ....etc

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WMOD2B dual-band 900



General Safety

It is important to follow any special regulations regarding the use of radio equipment due in particular to the possibility of
radio frequency, RF, interference. Please follow the safety advice given below carefully.
Switch OFF your GSM Modem when in an aircraft. The use of cellular telephones in an aircraft may endanger the
operation of the aircraft, disrupt the cellular network and is illegal. Failure to observe this instruction may lead ....etc

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Definition

The most important development in the computer communications industry in the 1990s is the evolution of the integrated services digital network (ISDN) and broadband ISDN (B-ISDN). The ISDN and B-ISDN have had a dramatic impact on the planning and deployment of intelligent digital networks providing integrated services for voice, data and video. Further, the work on the ISDN and B-ISDN standards has led to the development of two major new networking technologies; frame relay and asynchronous transfer mode (ATM). Frame relay and ATM ....etc

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Presented By:
Z. Y. Mijbil1 and M. G. Merdan2
1 Babylon University, College of Veterinary.
2 Babylon University, College of Science, Department of Physics.


Summary
Lattice constant, cohesive energy, direct band gap and valence band width had been calculated for grey tin by using ( CNDO-LUC ) method, then we had been making a comparison with experimental and other workers results for ( C, Si, Ge and Sn ) with zinc-blende structure in order to study the efficiency of this method. The results had show ....etc

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