Why do patch antennas have leakage if they have standing waves?

Thread starter legyptien21
Start date May 27, 2015
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Antenna Dipole

AI Thread Summary

Patch antennas are classified as leaky wave resonant cavities due to their magnetic slots that radiate energy, despite the presence of standing waves characterized by nodes and antinodes. The discussion centers on the apparent contradiction between having standing waves and experiencing leakage, as full reflection would imply no energy loss. It is clarified that leakage occurs through apertures in the cavity wall, not from the conductive boundaries, and that standing waves can exist even with less than perfect reflection coefficients. The interaction of incident and reflected waves creates a standing wave, while the overall wave behavior includes both standing and progressive components. This complexity highlights the nuances of wave behavior in patch antennas, emphasizing that standing waves do not negate the presence of leakage.

May 31, 2015

berkeman

Admin

Unfortunately, nothing is clear in this thread. Partially due to the language translation issues (not your fault), and partially due to the ill-defined and changing questions. Thread will stay closed now. Sigh.