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Subject: Impedance matching transformer and Return loss

Date: 08/15/01 at 9:17 PM
Posted by: Abbas
E-mail: abbas_ghulam@hotmail.com
Message Posted:

I am using an impedance matching transformer between two points in an RF circuit. The operating frequency range is upto 2.2 GHz.
Tthe transformer specifications say it has Return loss in the range of 15 to 26 dB. "'This thing really scares me"
I know about Insertion loss. My perception about Return Loss is that this is the amount of signal (energy) being reflected back from any particluar device or point, which in this case is transformer.
Can any body tell me what exactly mean by return loss.?
Is this high value of return loss is accepatable for a satellite signal.?
I think even amplifying cannot compensate for this much high loss.
thanks
Abbas

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