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Author: search.filters.author.Tiamsuphat, AphinatSubject: search.filters.subject.CMOS

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    Electronically tunable MOS-only current-mode high-order band-pass filters
    (2017-01-01)
    Prommee, Pipat
    ;
    Tiamsuphat, Aphinat
    ;
    Taher Abuelma'Atti, Muhammad
    This paper presents new CMOS current-mode ladder Chebyshev and elliptic band-pass filters (BPFs). The signal flow graph and the network transformation methods are used to synthesize the proposed BPFs by using Chebyshev and elliptic RLC low-pass prototypes. CMOS-based lossy and lossless integrators with grounded capacitors are used to synthesize the proposed BPFs. The proposed filters can be electronically tuned between 10 kHz and 100 MHz by adjusting the bias current from 0.02 A to 200 A. Both filters use a 1.5 V DC power supply, which leads to low dynamic power consumption. Both filters enjoy total harmonic distortion of less than 1.5% along the range of the tuning bias currents. Simulation results are included to illustrate the functionality of the proposed filters.
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    CMOS-based Chebyshev current-mode ladder band-pass filter
    (2015-04-24)
    Tiamsuphat, Aphinat
    ;
    Prommee, Pipat
    This paper presents a CMOS-based Chebyshev current-mode ladder band-pass filter (BPF). The integrator building blocks (lossy and lossless integrators) with 6 grounded capacitors are used to realize the BPF by using doubly terminated RLC ladder filter prototype based on TSMC 0.18μm CMOS technology. Frequency response of the circuit can be tuned between 1MHz and 200MHz through bias currents from 0.01 μA to 100 μA. The proposed circuit has many attractive features, for instant, low power supply as 1.5V, low dynamic power consumption and low Total Harmonic Distortion (THD). All simulation results are carried out by PSpice which are good agreements compared with the RLC prototype.