Wideband Filtering Power Divider With Ultra-Wideband Harmonic Suppression and Isolation

Wu, Yongle, Zhuang, Zheng, Liu, Yuanan, Deng, Li and Ghassemlooy, Zabih (2016) Wideband Filtering Power Divider With Ultra-Wideband Harmonic Suppression and Isolation. IEEE Access, 4. pp. 6876-6882. ISSN 2169-3536

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Official URL: https://doi.org/10.1109/ACCESS.2016.2613883


In this paper, a wideband filtering power divider (PD) with ultra-wideband harmonic suppression and isolation is proposed. The dual coupled-line sections are embedded to the conventional quarter-wavelength transmission lines, which helps to extend the passband of the PD. With the introduction of the short-circuit stubs shunted at the output ports and the coupled lines with the open-circuit stubs, the ultra-wide stopband can be implemented more efficiently, thus resulting in five transmission zeros from 2 to 6 GHz. Furthermore, the improved isolation structure with series connected a resistor and a capacitor can be utilized to realize the ultra-wide isolation frequency band. Using a single resistor between two output ports, we have achieved an excellent in-band isolation. For demonstration, a wideband filtering PD operating at 1 GHz with a 20-dB bandwidth of 50% and an ultra-wide stopband better than 20 dB from 2 to 6 GHz is designed, fabricated, and measured. The measured results agree well with the anticipation.

Item Type: Article
Subjects: H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Becky Skoyles
Date Deposited: 07 Mar 2017 12:45
Last Modified: 01 Aug 2021 12:33
URI: http://nrl.northumbria.ac.uk/id/eprint/29894

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