Trirat, Akraphon

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Trirat, Akraphon
Alternative Name
Trirat, A.
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Email
akraphon.tr@kmitl.ac.th

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    Item type:Publication,
    Design of multiplierless elliptic narrowband IIR digital filter based on sensitivity analysis
    (2004-12-01)
    Trirat, Akraphon
    ;
    Chivapreecha, Sorawat
    ;
    Khunaworawet, Tanawut
    ;
    Ruangrangsan, Teerasak
    ;
    Dejhan, Kobchai
    In this paper, we present a technique for the design of narrow-band multiplierless IIR filter based on sensitivity analysis. All the multiplication constants in proposed filter structure are implemented with a small number of shift registers and adders. It is shown in the paper that by appropriated design of the elliptic minimal Q - factor (EMQF) prototyped transfer function, (n+1)/2 multiplication constants of highest sensitivity can be implemented without quantization. The quantization of the remaining (n-1)/2 less-sensitivity constants is performed using phase-tolerence scheme.
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    Item type:Publication,
    A BiCMOS current-mode lossy integrator low-pass filter
    (1999-12-01)
    Dejhan, Kobchai
    ;
    Jaruvarakul, Aungkana
    ;
    Trirat, Akraphon
    ;
    Cheevasuvit, Fusak
    ;
    Soonyeekan, Chatcharin
    This paper proposes a BiCMOS current mode lossy integrator lowpass filter in translinear form. It operates at high frequency range, 3 volts supply voltage. The cut-off frequency can be tuned by using the biasing current. All simulation results of cut-off frequencies variation are carried out by using PSpice simulation based on 0.8 μm BiCMOS technology.