Wongtaychatham, Chariya

Loading...
Thumbnail Image
Preferred name
Wongtaychatham, Chariya
Alternative Name
Wongtaychatham, C.
Main Affiliation
Email
chariya.wo@kmitl.ac.th

Settings

Now showing 1 - 4 of 4
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Fully active and minimal shadow bandpass filter
    (2018-08-13)
    Buakaew, Seangrawee
    ;
    Narksarp, Wipavan
    ;
    Wongtaychatham, Chariya
    A new topology of shadow bandpass filters is presented in this paper. The proposed circuit employs the active building block of three voltage differencing transconductance amplifiers (VDTA) along with two grounded capacitors. This results in an additional attractive feature of being fully active and minimal component-count. Practical realization of the VDTA is also given and employed for circuit verification. PSPICE simulation with model parameters of 0.18μ m CMOS technology is included to confirm the filter functionality of the proposed filter.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Shadow bandpass filter with Q-improvement
    (2019-07-01)
    Buakaew, Seangrawee
    ;
    Narksarp, Wipavan
    ;
    Wongtaychatham, Chariya
    A new architecture of the shadow bandpass filters with the quality factor improvement is proposed. The presented idea employs external amplifiers cooperating with the classical biquad cell resulting in convenient electronic tunability of the characteristic frequency and the quality factor. The scheme obtains the benefit of the quality factor-improvement via feedback gains of the external amplifiers. The theory is verified by PSPICE simulation using 0.18 μm CMOS technology model parameters.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    A Simple and Compact Transimpedance Mode dc Bridge Readout
    (2021-04-01)
    Buakaew, Seangrawee
    ;
    Narksarp, Wipavan
    ;
    Wongtaychatham, Chariya
    This paper presents a new circuit configuration of a transimpedance mode dc bridge based on an operational trans-resistance amplifier (OTRA) as an analog building block. The proposed circuit suits for small changing resistance detector. By taking the benefit of grounding property at the internal input port of the OTRA, a simple and compact dc bridge is obtained. The proposed circuit is composed of two sensing components together with a feedback resistor and only one operational trans-resistance amplifier. The circuit performances are verified by the PSPICE simulation using 0.35 m CMOS technology model parameters. The simulation results from circuit level agree well with the theoretical values.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    High Quality-Factor Shadow Bandpass Filters with Orthogonality to the Characteristic Frequency
    (2020-06-01)
    Buakaew, Seangrawee
    ;
    Narksarp, Wipavan
    ;
    Wongtaychatham, Chariya
    The paper proposes the topology and implementation of the shadow bandpass filter. The main advantage of this work is that the bandpass filter possesses the distinctively high-quality factor whereas the control of this quality factor is independent with the tunability of the characteristic frequency. The circuit configuration is realized and satisfactorily verified via PSpice simulation.