Title :
A Four-Way Microstrip Filtering Power Divider With Frequency-Dependent Couplings
Author :
Feng-Jun Chen ; Lin-Sheng Wu ; Liang-Feng Qiu ; Jun-Fa Mao
Author_Institution :
Key Lab. of Minist. of Educ. of Design & Electromagn. Compatibility of High-Speed Electron. Syst., Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
A four-way microstrip power divider is designed with bandpass filtering response. The synthesized inline filter has a generalized Chebyshev response, where frequency-dependent couplings are utilized. All of the critical parameters, including the characteristic impedances and electrical lengths, can be determined by our derived closed-form formulas. By extending the inline filter, the configuration of four-way power divider is obtained. Then, three isolation resistors are properly selected according to the even-/odd-mode analysis. The proposed four-way filtering power divider has low in-band insertion loss and high frequency selectivity. It can provide the in-band return loss and isolation between outputs better than 16.7 and 17.5 dB, respectively .
Keywords :
Chebyshev filters; band-pass filters; microstrip filters; power dividers; bandpass filtering response; characteristic impedances; electrical lengths; four-way microstrip filtering power divider; frequency-dependent couplings; generalized Chebyshev response; high frequency selectivity; isolation resistors; low in-band insertion loss; synthesized inline filter; Couplings; Frequency conversion; Microstrip filters; Power dividers; Resonant frequency; Topology; Transmission line matrix methods; Filtering power divider; frequency-dependent coupling; general Chebyshev response; microstrip line; multifunctional passive component;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2015.2457426
