Currently, I'm looking for some bias tees to add some DC bias to RF signals (whose carrier frequency is not determined yet, but definitely lower than 30 MHz and amplitdue does not exceed +/- 3 V.)
Since I'm not familiar with electrical engineering, I've referred some articles and papers and found bias tees from Aeroflex/Inmet.
In the page, I'm curious that what does frequency column stand for. Is it cutoff frequency of bias tees? And can I use those bias tees for my application?
And for the price around $ 420, it is a bit expensive than I expected (Detail price will be different after quote.)
Therefore, I'd like to look up other bias tees on some online retails and could you recommend some retails? I already know one, element14.