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Waveguide Question - RF Cafe Forums
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| Mjwebster99
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Post subject: Waveguide Question
Posted: Fri Nov 18, 2005 8:43 am
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Ok I have another question. Im looking to build
a waveguide for some car roof mounted antennas,
though am unsure as to whether i require gain or
not. The transmitter and receiver modules im using
will give me a range of 100m, which i intend to
maintain. I want to use a waveguide to increase
the directionality of my antenna. If i had a simple
aluminium box design surrounding my antenna that
had dimensions above half the wavelength would that
cause any loss in signal strength recieved or would
it maintain the 100m range i require but over the
specific direction dictated by the waveguide?
I need to keep the design as compact as possible,
and given that im using 868Mhz UHF any specific
flaring to increase gain, would make the guide far
to big. Would a small amount of flaring increase
the gain in any way?
Hope someone can halp.
Many thanks
Matthew Webster
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kanling |
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Post subject:
Posted: Fri Nov 18, 2005 12:37 pm
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| Colonel |
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Joined: Mon Jul 18, 2005
4:31 pm
Posts: 32
Location: Baltimore, MD
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I can't imagine what you're trying to accomplish,
but please post a picture when you are done.
With multiple horizontally polarized UHF antennas
connected with waveguide, your car is going to look
like a mobile air conditioning plenum.
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mjwebster99 |
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Post subject:
Posted: Fri Nov 18, 2005 2:19 pm
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It does sound a bit crazy, I know. Im hoping to
keep any waveguides used to be as compact as possible.
I just need to guage how big it would be to be applicable
to 868Mhz UHF. I really hope my car doesn't end
up looking like a mobile air conditioning plenum.
I really do!
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Posted 11/12/2012
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