Machine-translated by Google. Questions are authored in English.
Top

Discussion

What is a gamma match?

  • A.An off centre tap on the driven element with a series capacitor
  • B.A quarter wave transformer printed on the boom of the array
  • C.A balun made from a half wavelength loop of coaxial cable
  • D.A short circuited stub placed across the feed point of the antenna

Answer: A

A gamma match connects the inner conductor of the coaxial cable part way along one half of the driven element, with a series capacitor to cancel the resulting inductance. Tapping further out raises the impedance, so any value can be reached, and the element need not be split. Quarter wave transformers, coaxial baluns and stubs are all separate devices used elsewhere in antenna practice. Its virtue is that it matches and balances an unsplit element at once.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.