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Analysis of a Dual N-Path Filter | IEEE Conference Publication | IEEE Xplore

Analysis of a Dual N-Path Filter


Abstract:

N-path circuits based on switched capacitors and switched transmission lines have become prominent radio frequency (RF) circuits due to their frequency translational char...Show More

Abstract:

N-path circuits based on switched capacitors and switched transmission lines have become prominent radio frequency (RF) circuits due to their frequency translational characteristics. All these N-path circuits that have been demonstrated in the recent past are based on a single network topology containing ‘N’ parallel branches. This paper presents a dual N-path filter that is derived from the single-port switched capacitor bandpass filter (BPF). This dual N-path filter is based on switched inductors and exhibits series resonance at the clock frequency. Analytical expressions for transfer function and input impedance of the dual N-path filter are derived and verified. This capacitor-less N-path filter is suitable for implementations in planar technologies in which high-value (vertical) capacitors are not available. Moreover, the dual topology with other impedance elements offers more options to circuit designers for the implementation of N-path filters.
Date of Conference: 12-14 October 2020
Date Added to IEEE Xplore: 28 September 2020
Print ISBN:978-1-7281-3320-1
Print ISSN: 2158-1525
Conference Location: Seville, Spain

References

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