Re: Microwave communications
- From: Paul Keinanen <keinanen@xxxxxx>
- Date: Thu, 31 Jul 2008 10:20:07 +0300
On Wed, 30 Jul 2008 23:31:32 -0700 (PDT), ross.g.marchant@xxxxxxxxx
wrote:
I need to design a system that communicates in the microwave range (>
5GHz) using a horn antenna... Does any body know if there are any off
the shelf chipsets, or can point me in the direction of any reference
designs or manufacturers. The system would be very low power.
In which countries should this system operate. Are you prepared to do
the type acceptance testing required in some countries ?
A horn antenna would suggest line of sight communication and quite
high effective radiation power (EiRP), so this would rule out any
licence-free bands and a license is required for the system.
You did not specify the frequency range, but it is hard to get any
chip sets running directly at say 10 GHz. In practice you would have
to use a receiver preamplifier on the microwave frequency, then mix
down the received microwave signal to a lower intermediate frequency
(IF) and then do the processing at a lower frequency.
For transmitting, generate the signal at some lower frequency, mix it
up with a local oscillator, apply some power amplification before the
antenna.
Paul
.
- References:
- Microwave communications
- From: ross . g . marchant
- Microwave communications
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