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Art wrote:
"Thus Kraus`s antennas are not in equilibrium and thus deviated away from Maxwell`s laws." Impossible. Maxwell`s laws are all that is nscessary and sufficient to describe radiation from any antenna. On page 37 of Kraus & Marthelka`s "Antennas for All Applications" one can read: "Although a charge moving with uniform velocity along a sreaighr conductor does not radiate, a charge moving back and forth in simple harmonic motion along the conductor is subject to aceleration (and deceleration) and radiates." To better understand Maxwell and radiation, I recommend "Radio-Electronic Transmission Fundamentals" by B. Whitfield Griffith, Jr (now reprinted by Scitech Publishing Inc.. See "Directive Patterns Over Real Groind" in the "ARRL Antenna Book" for how rays combine to make a pattern. Best regards, Richard Harrison, KB5WZI |
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