How can I design a bias-tee for a frequency from 500KHz to 20MHz?

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STOIKOV

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have a signal generator and need to mount a sinusoidal wave in a 2.5V DC value but the instrument does not provide this level of offset. How can design a bias-tee for a frequency from 500KHz to 20MHz. Commercial bias-tee are too expensive :| ($100usd or more) suppliers like minicircuits. Someone to know a website with cheaper bias-tee ?
I'm not sure if connecting generator and power supply in series is correct.
 

Re: bias tee

connecting power supply and generator in series wouldn't cause any problem if you are using supplies below the function generator's input dc supply roughly 15 to 20 volts.... i have tried this....
 

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