Wisetphanichkij, Sompong
Loading...
Preferred name
Wisetphanichkij, Sompong
Main Affiliation
Email
sompong.wi@kmitl.ac.th
12 results
Now showing 1 - 10 of 12
- Some of the metrics are blocked by yourconsent settings
Item type:Publication, A low-voltage CMOS current squarer circuit(2005-12-01); ; Dejhan, KobchaiThis paper presents a low-voltage current-mode CMOS squarer circuit. The low voltage operation can be achieved by the simple circuit design of the simple CMOS current mirrors and voltage shifting circuit. The realization method uses the MOS square-law technique in saturation region and require only V <inf>Th</inf>+2V<inf>DS</inf>. Simulation results show that the proposed circuit works well at supply voltage of 1V for a 0.5μm technology. © 2005 IEEE. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Low voltage wide band inverting current feedback amplifier(2004-12-01); Dejhan, KobchaiThis paper proposes a new design of low voltage wide band inverting current feedback amplifier. With the simple and small circuit, leads to high frequency response up to 2.5 GHz, with high gain and large input/output dynamic range up to ± 0.5V under ± 0.7V supply voltage. The simulation performed with MOSIS 0.5 micron technology and results the excellent performance, stabilize under large range ambient temperature. This circuit also well performs in digital application and suitable for mixed-signal processing. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Linear Range Enhancement Circuit for LVDT based on Bipolar OTA with Relative Error Control(2022-01-01)This paper proposes a Linear Range Enhancement Circuit for Linear Variable Differential Transformer (L VDT) which was by inverse hyperbolic tangent function implemented by bipolar type OTA. The proposed circuit requires only 2 OpAmps, a bipolar-type OTA and a small number of passive elements. Furthermore, the mathematical models were used in the analysis to determine the configuration methods of the circuit to improve the linearity range enhancement techniques under controlled maximum relative error (%). Two configuration methods of relative error are 0% at center with flat top and ripple top with specific maximum relative error. The Pspice simulation results show the efficiency of the proposed technique for widening the linear operating displacement of the transducer up to 30mm for LVDT (ks = 50 v/m, and kn = 0.2) for 1 % of maximum relative error. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Multi-resolution image registration based on correlation technique(2005-01-01); Dejhan, KobchaiThis paper proposed the new techniques of the multi-resolution image registration. The two images (reference and searching images), firstly, were prepared by decompose to multi-resolution images with discrete wavelet transform (DWT). Then the factional masks are created and convert to the binary masks base-on prior information. This efficiency mask-based algorithm operates in the coarse-to-fine resolution fashion on low-pass sub-band of decomposed image. Then the correlation performed at each resolution level to accomplish the registration problem © 2005 IEEE. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A design of ternary Schmitt trigger circuit(1999-12-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A 1.1-V Low power true single-phase clock 2/3 prescaler(2017-10-19); ; Tudsorn, ApirakThis paper is proposed a low-power CMOS 2/3 prescaler using true single-phase technique on 45 nm CMOS technology with 1.1 V. The true-single-phase clock divider is used to achieve low power. The prescaler is capable of operating from 1 to 16 GHz. When operating at 1 GHz, it saves more power consumption compared to that of a conventional circuit and lowpower true single-phase clock CMOS 2/3 prescalers circuit operating in divide-by-2 mode and in divide-by-3 mode, respectively. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Minimal Realization Plus Current Output CC-based Biquad Circuit(2023-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Planar array waveguide auto-alignment based on adaptive evolution optimization method(2005-12-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A design of current-mode all-pass oscillator based on current conveyor circuit(1999-12-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Near Full Stroke Length Linear Range Enhancement Circuit for Linear Variable Differential Transformer (LVDT)(2023-01-01)This paper proposes a linear range enhancement circuit for Linear Variable Differential Transformer (LVDT). The nonlinear is compensated with a signal obtained from an inverse hyperbolic tangent function circuit and with the appropriate gain settings within the circuit. The efficiency of the proposed circuit depends on the accuracy of the signal obtained by the inverse hyperbolic tangent function circuit. The simulation results with Pspice® program demonstrate the efficiency of the proposed circuit for enhancing the linear operating distance of the transducer. Under a relative error a(%) of 2.2%, the linear operating range is improved from ± 9mm to ± 35mm for LVDT Kn=250(kn=0.1) at ± 37mm full stroke length, which is much wider compared to the signal obtained from the transducer before the improvement.