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Questions about the design, selection, building, testing, mounting, or properties of antennas. See also specific tags: [antenna-theory], [antenna-construction], [dipole], etc.

2 votes
2 answers
159 views

Interpretation of NASA design

I have a similar design using a hybrid coupler, and this is very nearly what I want to build in terms of antenna system, but I don't understand how the coax is attached to the antenna elements as shown … If someone could explain the connection to the antenna that would be appreciated. …
Kontakt's user avatar
  • 155
8 votes
2 answers
2k views

cubesat turnstile antenna material selection

Spring steel has ideal mechanical properties, but isn't an optimal antenna metal. The material of the one shown is apparently Nitinol shape memory alloy, that will unroll itself when heated. …
Kontakt's user avatar
  • 155