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Michael Coslo wrote:
Jim Lux wrote: Consider this.. if the loop has an electrical Q of, say, 1000 (which isn't unusual), and you're radiating 100W, then there's 100kW of circulating power in the system. Works on zero point energy? Nope, the 100k joules/sec was stored in the system during the initial transient key-down state and was not radiated. It won't be radiated until the transient key-up state. This is a characteristic of standing- wave antennas. In a 1/2WL dipole, only about 20% of the energy stored in the antenna is radiated. In the small loop above with its astronomically high SWR, only about 0.1% of the energy stored in the antenna is radiated during steady-state. -- 73, Cecil, IEEE, OOTC, http://www.w5dxp.com |
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