Details

Autor(en) / Beteiligte

• Wang, Kai-Xu
• Zhang, Xiu Yin
• Hu, Bin-Jie

Titel

Gysel Power Divider With Arbitrary Power Ratios and Filtering Responses Using Coupling Structure

Ist Teil von

• IEEE transactions on microwave theory and techniques, 2014-03, Vol.62 (3), p.431-440

Ort / Verlag

New York, NY: IEEE

Erscheinungsjahr

2014

Quelle

IEL

Beschreibungen/Notizen

• This paper presents a novel method for designing Gysel power dividers with arbitrary power-division ratios as well as filtering responses. A coupling structure is utilized to replace the quarter-wavelength microstrip line in the power divider. By altering the coupling strength, the power ratio can be arbitrarily controlled with the highest ratio of 10:1. Furthermore, the coupling structures enable the filtering function of the power divider. Two transmission zeros are created near the passband edges, resulting in high-selectivity quasi-elliptic responses. Theoretical analysis is carried out, and closed-form equations are derived based on circuit theory and transmission line theory. For demonstration, three filtering Gysel power dividers are implemented with different power-division ratios (1:1, 3:1, and 10:1). In all of these circuits, power splitting and bandpass filtering functions are observed with good performance. Comparisons of the measured and simulated results are presented to verify the theoretical predications.