A Broadband Bandpass Wilkinson Power Divider With DC Block Performance

In this letter, a broadband bandpass Wilkinson power divider (WPD) with DC block performance is introduced. The proposed topology could provide in-band equal-ripple performance of S11,S22 (S33) and S32, three transmission zeros of S11,S22 (S33) and three isolation zeros of S32 will be realized simultaneously. Owing to the existence of coupled lines and short-circuit stubs, the proposed WPD provides perfect DC isolation. Amplitudes of reflection and isolation are controlled below - 15 dB and - 20 dB, respectively. For verification, a broadband bandpass WPD with DC block performance has been simulated, fabricated, and measured. Measured and simulated results matched reasonably well.