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Design of novel compact dual‐band filtering power divider using stepped‐impedance resonators with high selectivity
Author(s) -
Liu Hui,
Liu Cheng,
Dai Xin,
He Sailing
Publication year - 2016
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.20962
Subject(s) - resonator , multi band device , power dividers and directional couplers , resistor , wilkinson power divider , electrical impedance , coupling (piping) , microwave , electrical engineering , power (physics) , electronic engineering , computer science , engineering , frequency divider , physics , voltage , telecommunications , mechanical engineering , quantum mechanics , antenna (radio)
A novel compact dual‐band power divider with filtering responses is presented in this article. The proposed circuit utilizes coupled quarter‐wavelength stepped‐impedance resonators. By controlling these resonators, dual‐band operation can be realized. Furthermore, a resistor is connected between the two open ends of the input feed line to obtain good isolation at two bands. Source load coupling is utilized to enhance the selectivity. To verify the proposed idea, a filtering power divider with the operating frequencies of 2.4 and 5.8 GHz is implemented. Good agreement between the simulated and measured results validates the proposed idea. The total size of the circuit is 0.23 λ g × 0.28 λ g , where λ g is the guide wavelength of 2.4 GHz. © 2016 Wiley Periodicals, Inc. Int J RF and Microwave CAE 26:262–267, 2016.