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asterysk
Antenna-Theory.com Newbie
Joined: 07 Nov 2019
Posts: 5
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 Posted: Fri Nov 08, 2019 12:45 pm Post subject: EFHW Antenna in space - does it work ? |
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| Hypothetical question: if an EFHW antenna was being trailed by a spacecraft, would it radiate and how would I model this with an NEC program |
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R. Fry
Antenna Theory Regular
Joined: 06 Jun 2011
Posts: 49
Location: Illinois USA
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| Posted: Sun Nov 10, 2019 11:41 am Post subject: EFHW in Space |
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No matter where located, an EFHW antenna needs a 2nd radiating conductor to complete that antenna system.
Typically this is supplied by a "counterpoise" wire connected to the matching device at the antenna feedpoint, and/or the outer diameter of the outer conductor of a coax transmission line leading from the matching device back to the r-f source (transmitter).
All of that could be accomplished in a spacecraft installation, and be modeled in NEC — including even the effects on the radiation pattern of the EFHW caused by the presence of the spacecraft. |
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