Miniaturised Wilkinson power divider with wide-stopband using synthetic transmission line
2017
A wide-stopband Wilkinson power divider (WPD) is proposed, which can be realised by using open dual-transmission line (TL) stub and L-type artificial lowpass TL structures. To further achieve miniaturisation, synthetic TLs are also employed. The simulated and measured results are consistent, and the measured |S 21| and |S 31| (insertion losses) have shown stop-bandwidth of larger than 18.33 GHz (1.67–20 GHz) and 18.28 GHz (1.72–20 GHz), respectively, under the condition of 30 dB harmonic suppression level. The wide-stopband of the WPD can cover 2fo –22.2fo (fo = 0.9 GHz), and the occupied area of the WPD (not include the feeding network) is only 0.11λ g × 0.06λ g (λ g: guided wavelength at fo ).
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