Simulation software is a black box. Without a deep physical intuition, you cannot validate your results. Kraus teaches you the "sanity check." For example, after designing a microstrip patch antenna in software, you should instinctively know the approximate radiation pattern and impedance. That instinct comes from working through Kraus’s problems.
The central pillars of electromagnetics, presented in both differential and integral forms. Wave Propagation:
A concise takeaway Kraus’s electromagnetics material pairs rigorous derivations with practical intuition; treat the book as both a theoretical reference and a source of engineering heuristics. Build understanding by alternating analytic derivations, problem solving, simulations, and hands-on measurement.
The work of John D. Kraus remains essential because the laws of physics don't change. Whether you're designing the next generation of 5G antennas or studying for a PhD in physics, having a copy (digital or physical) of "Kraus" is a rite of passage.
: Early introduction of practical signal propagation.