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About Shehata

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Location:
Waterloo, Ontario, Canada
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University of Waterloo
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PhD candidate

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4th July 2018
03:00 Shehata achieved 7 years registered

3rd July 2018
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Recent Entries

theSecretIsInTheCode()

by Shehata on 8th July 2012 at 16:20
You may have seen the great Oscar winner movie “The secret in their eyes” (If you have not, I advise you to do). However, this is not related to the topic of this blog . The secret is in the code is not a movie. It is a real situation occurs in almost every team work capacity. It is a phenomenon in which the individual (team player) hides some of the information/knowledge to secure his job/position in the company. The sentence itself was quoted from my ex-project manager. He used to describe

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The future of wireless high data rates communications

by Shehata on 9th June 2012 at 23:04
There is an ever-increasing demand for wireless broadband applications. This includes wireless HD video streaming, wireless backhaul links, broadband internet access and mass files transfer applications. All of this emphasizes the need for low cost and efficient millimeter-wave (mmWave) systems. mmWave spans the frequency range from 30GHz to 300GHz. However, the most famous mmWave band is the unlicensed 60GHz band which is mainly used for short range data links with bandwidths up to 2.5Gbps.

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Funny Bug in HFSS optimizer !!!

by Shehata on 30th April 2012 at 11:09
Ansys HFSS normally uses the scattering parameters convergence as a termination condition. Although, this does not necessarily mean that the solution converged everywhere, it is a fast and efficient criterion.

Few days ago, I was running the built in optimizer in HFSS searching for the minimum S11. I discovered that the optimizer wasted a long time in simulating many different samples below the solution accuracy. I wondered why the optimization engine

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