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3-6 GHz Dipole antennas - RF Cafe Forums
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| dle1975
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Post subject: 3-6 GHz Dipole antennas
Posted: Thu Jun 10, 2010 10:27 am
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Joined: Thu Jun 10, 2010
10:23 am
Posts: 1 |
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Does anyone know where I could find one or more
1/2 wave dipoles that would cover the frequency
range from 3 GHz to 6 GHz?
thanks,
David
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nubbage |
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Post subject: Re: 3-6 GHz Dipole antennas
Posted: Fri Jun 18, 2010 10:32 am
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| General |
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Joined: Fri Feb 17, 2006
12:07 pm
Posts: 236
Location: London UK
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Hi David
the term for what you are looking for
is "a discone" so try a search engine for that.
If I needed something quickly, I would take a length
of 10mm copper pipe cut as half wavelength for 4.5
GHz (35 mm length) then feed it parasitically through
a parallel strip of copper, 20mm long, spaced about
2 or 3mm away. To do this use semi-rigid coax running
inside one arm of the 35mm tube and out through
a small clearance hole about 10 mm from the center
line. The outer of the coax is soldered to the 10mm
diam pipe at the hole, and the inner goes to the
end of the copper strip. The other end of the copper
strip (transformer) is bent down as a small tab
capacitor near to the 10mm diam dipole. This should
cover an octave bandwidth with a fairly good S11
_________________
At bottom, life is all
about
Sucking in and blowing out.
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karthik |
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Post subject: Re: 3-6 GHz Dipole antennas
Posted: Sun Jun 20, 2010 12:24 am
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Joined: Tue Apr 11, 2006
8:13 pm
Posts: 34 |
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If you are not particular about the type of antenna
(i.e, dipole), you will find a ton of designs for
ultrawideband antennas which will cover that bandwidth.
Different designs will have different gains/ radiation
patterns in that bandwidth though..
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Posted 11/12/2012
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