RE: NEC-LIST:Loaded dipoles

>Resistive loading of the antenna accomplishes nothing but to
>dissipate power. If dissipation is your goal, you can get it more
>easily with a resistive pad in the feedline between the antenna and
>your transmitter and/or receiver. The only advantage of
>distributing the resistance that I can imagine is to dissipate the
>heat into the air more easily.

Hello. The above statement could arguably be correct for a
narrowband antenna but is not correct when designing a broadband
antenna that is required to operate over multiple octaves. Resistive
loading schemes on antennas are implemented to achieve. across the
operating bandwidth, the optimum trade-off among antenna gain
(efficiency), pattern shape, and feedpoint VSWR (acceptable
transmitter mismatch, say < 3.0). Although a resistive attenuator
inserted between the antenna feed and transmitter might be a
solution, it does not necessarily represent the optimum solution for
the transmitting system architecture. One well-known example using a
simple dipole is Edward Althuler's paper, "The Traveling Wave Linear
Antenna", IRE Transactions on Antennas and Propagation, vol. 9, pp.
324-329, July 1961. Sincerely,

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