Printed(Copper Strip) GSM and GPS Antenna on same PCB?
 

Does anyone know if it would be possible to do this?

How small could the PCB be? What is the minimum size for a pcb printed GSM
antenna?

Thanks very much

pfitz

On Mon, 20 Jun 2005 12:51:40 +0100, "pfitz"
wrote:

How small could the PCB be?

I've seen them as small as 1 micron.

What is the minimum size for a pcb printed GSM
antenna?

Many orders of magnitude larger than 1 micron, certainly.

Your problem is defining the di-electric constant, and its
contribution to altering the size of a conventional wire antenna in
free space.

73's
Richard Clark, KB7QHC

Thanks Richard,

Do you see any reason why you couldn't have both antennas printed on the
same PCB?

rgds

pfitz
"Richard Clark" wrote in message
...
On Mon, 20 Jun 2005 12:51:40 +0100, "pfitz"
wrote:

How small could the PCB be?

I've seen them as small as 1 micron.

What is the minimum size for a pcb printed GSM
antenna?

Many orders of magnitude larger than 1 micron, certainly.

Your problem is defining the di-electric constant, and its
contribution to altering the size of a conventional wire antenna in
free space.

73's
Richard Clark, KB7QHC

On Mon, 20 Jun 2005 17:08:29 +0100, "pfitz"
wrote:

Do you see any reason why you couldn't have both antennas printed on the
same PCB?

Hi OM,

Certainly, but not for the reason of a general prohibition. Antennas'
characteristics are always influenced by other conductors and
di-electrics in the vicinity. The influence is variable in every
novel situation. Separation of at least a quarter of the largest
wavelength (of the two) is a minimum, but is not a guarantee of
expected performance.

Modeling usually precedes implementation so as to reduce endless
rounds of discovering failure.

73's
Richard Clark, KB7QHC