Wideband filtering power divider with high selectivity

A wideband filtering power divider (PD) with high selectivity is introduced, based on a terminated coupled line structure. The bandwidth tuning, isolation and impedance matching performances optimisation are presented and explained. Finally, the filtering PD is designed and implemented with a centre...

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Bibliographic Details
Published in:Electronics letters 2015-11, Vol.51 (23), p.1950-1952
Main Authors: Zhang, Bo, Liu, Yuanan
Format: Article
Language:English
Subjects:
Bandwidth
bandwidth tuning
Filtering
Filtration
frequency 3 GHz
impedance matching
impedance matching performance optimisation
in‐band insertion loss
microwave filters
Noise levels
optimisation
passband selectivity
Power dividers
Selectivity
Tuning
UHF filters
Wideband
wideband filtering power divider
Wireless communications
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Summary:A wideband filtering power divider (PD) with high selectivity is introduced, based on a terminated coupled line structure. The bandwidth tuning, isolation and impedance matching performances optimisation are presented and explained. Finally, the filtering PD is designed and implemented with a centre frequency (f0) of 3.0 GHz and a fractional bandwidth of 70%. The upper stopband is achieved up to 2.6 f0, with a rejection of better than 13 dB. The measured minimum in-band insertion loss is 0.3 dB (not including the splitting loss). Isolation of higher than 16.7 dB between the output ports is observed up to 2.7 f0.
ISSN:0013-5194
1350-911X
1350-911X
DOI:10.1049/el.2015.2706