Electronic – Bias T with pulse train

biasRFsignal

I want to bias my pulser output which is 0 to 30V pulse train.
(Which means I want to make 30 to 60V pulses)

First, I used a bias T with 30V DC input:

enter image description here

I found that it works as a differentiator which gives the pulse train a negative offset so I can't get 30 to 60V pulse.

Is there any solution to make the pulse train to be biased as I want?

Best Answer

Option 1: Apply 45 V to the DC arm of the tee instead of of 30 V. You'll have to adjust this value if the duty cycle of the pulsed input is not 50%.

Option 2: Add a diode to the DC arm like so: enter image description here

enter image description here

Note: the output of this circuit could drop, depending how it is loaded.

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