This paper extends the circuit implementation of a complex ƒ
s/4 resonator based on integrators towards double-sampling. Next, an improved double-sampled circuit implementation of a complex ƒ
s/4 resonator based on delays is introduced. The key features of the proposed circuit are that mismatch does not affect the center frequency nor limit the Q-factor of the resonator and lower sensitivity towards opamp gain. To verify the analytical results extracted in this paper, simulation results are presented.
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