System and method for efficiently generating electromagnetic waves with reduced velocities

A system for efficiently generating a tailored electromagnetic (EM) wave having a lower velocity than the speed of electromagnetic waves in free space, comprising:

• a parallel-plate waveguide which extends linearly, wherein
• a tailored transmitting antenna plate which is constructed physically and electrically by at least three phase-shifted sub-antennas connected in series;
• and
• a sinewave current generator which generates multiple phase-shifted sinewave currents which are respectively input to the sub-antennas, wherein
• each of the sub-antennas produces a section of the tailored EM wave inside the waveguide.

A system for efficiently generating a tailored electromagnetic (EM) wave having a lower velocity than the speed of electromagnetic waves in free space, comprising:

• a waveguide which extends linearly;
• and
• a sinewave current generator, wherein
• the waveguide includes a conductor is made of a highly conductive material and a tailored transmitting antenna plate which electrically has at least three phase-shifted sub-antennas connected in sequence with equal segment length between adjacent feed lines;
• and
• a sinewave current generator which generates multiple phase-shifted sinewave currents which are respectively input to the sub-antennas through the feed lines.