A Tunable Integrated N-Path Bandpass Filter
Mobile Networks and Applications - Trang 1-7 - 2023
Tóm tắt
A tunable N-path band-pass filter is presented in this paper. Switched capacitor circuit and 6th topology are adopted to realize high-order harmonic suppression and tunability. the transfer function of N-path filter with the non-ideal factors such as parasitic capacitance and switching resistance is deduced. The N-path filter circuit is designed and simulation, including six-phase non-overlapping clock generation module, N-path switched capacitor unit with harmonic suppression, active gyrator and low-pass filter for suppressing high-frequency harmonics. The circuit can achieve adjustable center frequency of 50-100 MHz, adjustable bandwidth of 1.5-45 MHz.
Tài liệu tham khảo
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