Click here to go to our general discussion of Wilkinson power splitters
On this page we describe three different techniques for shrinking the physical layout of a Wilkinson power splitter, but there are probably others we haven't considered so drop us a line if you run across one! We've also plotted the frequency response for each splitter, given a 50% shrink in size from the classic Wilkinson, so you can judge what the penalties are.
New for August 2024. We split this page onto three sub-pages, as it was getting too long:
Example 1: Webb power divider
Example 2: Scardelletti power divider
Example 3: Kang power dividers
Compact Wilkinsons make up another class of Wilkinson power splitters. When would you want to use a compact Wilkinson? Suppose you wanted to use a Wilkinson power splitter at 1 GHz. The quarter-wave sections, laid out in microstrip on a soft substrate such as Duroid, would be a couple of inches long. You might not have room for them. Engineers have been trying different ways to shrink the Wilkinson since it was invented in 1960, but there are tradeoffs to each approach.
If you see any additional compact Wilkinsons out there, please send them our way and we will review them!