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2 Antennas&Power splitter issue

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pucca

pucca

Electrical
May 23, 2008
55
Hi, I want to make a RF circuit where:
-Tranmission is done with one or two antennas(by choice)
-Reception with one (as there is only one rx path)
I use a transceiver with one Tx/Rx path. So I suppose I can split the output signal of the transceiver in two separates antennas (Pout=1/2 Pin), using a power splitter. My problem is in the reception...where only one signal can be received...I have thought a pattern with some rf switche but I am not sure how the swithes must be operated and what type of switches should I use...I sent a draw of the circuit (how I imagine it)..please correct me if something is wrong...
Thanks.....
 
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Isn't this simply a continuation of your prior thread?

Also, I have no idea what an OGD file is, so no way to open it...

Dan - Owner
Footwell%20Animation%20Tiny.gif
 
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Sorry, it's an open office file. I will sent it again ....
 
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When transmitting you have the choice to split the signal through the power divider and send it through both antennas or to just sent it trough one of two. In the reception how can I select (by software..or smt else)which antenna will receive?
 
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Do you understand that using the power divider in this manner simply creates an array of two antennas with a gain pattern (and a null) set by the relative phase (including cable lengths) and spacing of the two antennas?

 
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Yes I know that...Do you think that I might have problems with the performance of the antennas due to the cable length or the switches' response?(some delay perhaps...what else should I consider?
 
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I think you might be onto something there. I have never seen this before! You could call it a "non-phase arrayed" antenna. You could get random antenna pattern performance, which statistically would average-out! And everyone knows that communications systems rely on statistics.
 
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