Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Correct. So 25dB of power gain means you have 316 times the power. 25db dB of voltage gain tells you that you have 17.78 times the voltage. 17.78 times the voltage will produce a 316 times power gain into a load because the power is proportional to voltage squared.
Please note that on this sheet you are using a RF device (what I would call a MIMIC - ) and are current bias powered for their operation - see schematic at the end of spec sheet. Also note that this RF device is characterized to work at very specific impedances - 50ohms input and output. Your maximum output is 19.2dBm, or about 90mW into 50ohms, or about 2volts across this load.
From long experience with these style of RF devices they can be temperamental if grounding, PCB layout, grounding, PCB board type, grounding, and input to output isolation and termination is in anyway compromised. And if I didn't say it enough - keep a careful eye on the signal grounding, and supply return paths!
MiniCircuits have some great resources take a look here **broken link removed**
Strictly speaking dB refers to power gain. It's only equal to voltage gain if the input and output impedances are the same, which is typical for high frequency amplifiers and circuits.
But commonly voltage gain is used simply to indicate gain from input to output of a circuit independent of the relative impedances, such as an audio amp or active filter. In that case the voltage gain and power gain are not usually equal. But power gain is not often used to specify such circuits.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.