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Antenna design question... please help - RF Cafe Forums
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| Myke
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Post subject: Antenna design question... please help
Posted: Thu Nov 11, 2004 11:47 pm
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Can someone please help me with these questions?
1.Design a pyramidal horn antenna at 5775 MHz
to offer a gain of 20 dB. You may assume any appropriate
value for the wave guide dimensions.
2.For
a gigabit wireless backhaul link ( LOS ), the data
rate is 2Gbps. The frequency of operation is 11GHz.
Suggest an appropriate antenna and substantiate
your choice based on a comparison with other possible
antenna structures.
3.Design a matching section
( patch / transmission line ) to match a 50 ohm
source to 75 ohm load . You may use any of the freeware
available on-line such as “AppCad” or “SMITH ” to
do the matching.
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Bert |
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Post subject:
Posted: Fri Nov 12, 2004 9:20 am
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Sounds like a student assignment. Now, if
you were in a fraternity, you could just search
the files for last year's solutions from your borthers.
Fortunately for you, you're probably not a frat
boy, so do yourself an even bigger service and figure
these out on your own. You might be asked
something similar on an interview one day and it
sure would be nice to know how to come up with the
answers on your own. Good luck - seriously.
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dursun |
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Post subject:
Posted: Wed Nov 17, 2004 11:11 am
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Joined: Mon Nov 15, 2004
4:08 pm
Posts: 3 |
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Regarding the third one - try looking it up in Microwave
engineering by Pozar, this and many other problems
are solved and explained there.
2 - check
some we sites of companies that produce antennas
and substrats (like Rogers). Simply type "Wi-Fi"
in the browser and you should find thousands of
solutions.
3. The gain and frequency of a
horn antenna depends on the dimensions of the aperture
and the lenght of the horn. That should be your
start point.
Best wishes and good luck
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Higgler |
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Post subject: Antenna Design
Posted: Tue Nov 23, 2004 3:26 pm
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1) 6x8 inch aperture, 12 inches long.
2) Frequency
scale the above antenna, or search google
3)
incomplete question, no bandwidth, no spec.
Sounds
like a homework assignment.
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Posted 11/12/2012
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