Abstract This paper presents a compact power divider using microstrip-slotline transition technology. By using the microstrip-slotline transition, the λ/4 transmission lines of the divider can be changed to two λ/8 transmission lines in the multilayer structure. In the microstrip-slotline transition, we have used via holes to make a short circuit at the microstrip line and embedded spiral configuration stubs to reduce the electrical length of an open circuit at the slotline end point. For validating the microstrip-slotline technique, we have simulated and implemented the power divider with embedded spiral and via hole configuration circuits at a frequency of 2 GHz. Good agreement between the simulation and the measurement results is obtained at the operating frequency. Key words : Microstrip-slotline transition, multilayer, spiral configuration stub, power divider * jklmn$olp(School of Electronic Engineering, Kumoh National Institute of Technology) ** qZmn$odTrslp(Department of Electronics & Information Communication Eng., Kwandong University) ‧ 1to(First Author) : uv(Young Kim, tel : +82-54-478-7506, email : youngk@kumoh.ac.kr ) ‧ wAgo: 2013108g‧ XG(Ad)go: 2013108g(Adgo: 20131211g) ‧ >xgo: 20131230g http://dx.doi.org/10.12673/jkoni.2013.17.6.687