Wide-band quadrature power divider with π-type compensation circuit

Author

Hyun-Sung Tae ; Wang-Sang Lee ; Seung-Tae Khang ; Kyoung-Sub Oh ; Jong-Won Yu

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol. (KAIST), Daejeon, South Korea

fYear

2013

fDate

6-10 Oct. 2013

Firstpage

148

Lastpage

150

Abstract

This letter presents a wide-band quadrature power divider with π type compensation circuit. The proposed quadrature power divider consists of two λ_g/4 short stubs to maintain 90° phase difference in operation band and series resonance circuit to compensate amplitude mismatches with short stub followed by Wilkinson power divider. The proposed structure is designed by analysis of the equivalent circuit and optimized by simulation. The experimental results show that the band-width of 10 dB return-loss at input and output port is 1.2 GHz (0.8~2.0 GHz, 85.7%), output port isolation is more than 10 dB and amplitude/phase imbalances are less than 0.5dB/ ±5° in the frequency range.

Keywords

equivalent circuits; microwave circuits; power dividers; signal generators; Wilkinson power divider; amplitude mismatches; compensation circuit; equivalent circuit; frequency 1.2 GHz; operation band; series resonance circuit; short stub; wide band quadrature power divider; Impedance; Microwave circuits; Phase shifters; Power dividers; RLC circuits; Signal generators; Circular polarization; Quadrature power divider; Wide-band circuit;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference (EuMC), 2013 European

Conference_Location

Nuremberg

Type

conf

Filename

6686612