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| | | | Electrically Small, Superdirective, and Superconducting AntennasHarold Wheeler, in his classic 1947 papers, created the fi eld of electrically small antennas. This fi eld has long been important for frequencies below roughly 1 GHz, where a half-wavelength is about 6 inches. These electrically small antennas have characteristics in common that limit performance: low radiation resistance, high reactance, low effi... |
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| | Professional Visual Basic 2008 (Programmer to Programmer)In 2002, Visual Basic took the biggest leap in innovation since it was released, with the introduction of Visual Basic .NET (as it was renamed). After more than a decade, Visual Basic was overdue for a major overhaul. Nevertheless, .NET goes beyond an overhaul. It changes almost every aspect of software development. From integrating Internet... | | |
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