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2.4GHz PCB antenna design

M

markp

Jan 1, 1970
0
Hi All,

I'm looking for some information on how to lay out a 2.4GHz antenna on a
PCB. Anyone got any good links?

Thanks!

Mark.
 
Hi All,

I'm looking for some information on how to lay out a 2.4GHz antenna on a
PCB. Anyone got any good links?

Thanks!

Mark.

Check out Microchip's application notes for their 2.4GHz ZigBee
transceiver, the MRF24J40. They have excellent documentation about PCB
antenna.
Also, look at Chipcon (now TI) cc2024 app notes. They have great
documentation also, and I believe they even provide gerber files.

-Goldscott
 
Check out Microchip's application notes for their 2.4GHz ZigBee
transceiver, the MRF24J40. They have excellent documentation about PCB
antenna.
Also, look at Chipcon (now TI) cc2024 app notes. They have great
documentation also, and I believe they even provide gerber files.

-Goldscott

It's actually cc2420, sorry.

-Goldscott
 
A

AJ

Jan 1, 1970
0
markp said:
Hi All,

I'm looking for some information on how to lay out a 2.4GHz antenna on a
PCB. Anyone got any good links?

Thanks!

Mark.

I agree with the previous posters, I found a lot of the information
provided by Microchip and Chipcon very handy. After playing around (and the
calculations provided by chipcon and microchip confirm), I found that a
wider track width makes a big difference. It raises the Rloss which in turn
increases the radiation efficiency.


Regards


AJ
 
M

markp

Jan 1, 1970
0
AJ said:
I agree with the previous posters, I found a lot of the information
provided by Microchip and Chipcon very handy. After playing around (and
the calculations provided by chipcon and microchip confirm), I found that
a wider track width makes a big difference. It raises the Rloss which in
turn increases the radiation efficiency.

Thanks for that, I'll bear that in mind when I prototype it! As an aside,
what's the easiest way to test the gain of an antenna (without the use of
fancy RF test equimpent)? Is just reading the reported receiving signal
strength of a module at varies distances away from it a representative test,
e.g. are they accurate enough for that purpose?

Mark.
 
J

Joel Kolstad

Jan 1, 1970
0
markp said:
Thanks for that, I'll bear that in mind when I prototype it! As an aside,
what's the easiest way to test the gain of an antenna (without the use of
fancy RF test equimpent)? Is just reading the reported receiving signal
strength of a module at varies distances away from it a representative test,
e.g. are they accurate enough for that purpose?

Only if you have a large, open field (large enough to get out into the far
zone of the antenna... going, say, 10 wavelengths out for measurements should
be good). You'll get pretty meaningless results if you conduct your test in,
e.g., a home or office building.
 
M

markp

Jan 1, 1970
0
markp said:
Thanks for that, I'll bear that in mind when I prototype it! As an aside,
what's the easiest way to test the gain of an antenna (without the use of
fancy RF test equimpent)? Is just reading the reported receiving signal
strength of a module at varies distances away from it a representative
test, e.g. are they accurate enough for that purpose?

Mark.

Actually, I found this Googling:
http://www.mrx.com.au/wireless/TestGear2_4ghz.htm

Looks interesting...
 
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