Abstract: This paper demonstrates that unit cell asymmetry with respect to the transversal axis —or transversal asymmetry— is an essential design parameter in periodic leaky-wave antennas (P-LWAs).

In ancient Greece, Euclid showed that if you agree on a small list of preliminary principles, or axioms, you can use deductive reasoning to reveal all sorts of new mathematical truths. But although ...

On October 16 1843, the Irish mathematician William Rowan Hamilton had an epiphany during a walk alongside Dublin’s Royal Canal. He was so excited he took out his penknife and carved his discovery ...

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After linking the world for 167 years, the commercial electric telegraph is no more. The speed with which electromagnetic telegraph systems took over both short- and long-distance communication in the ...