Steady states prediction in nonlinear circuit by wavelet transform. - Takashi Hisakado; Kohshi Okumura (ISCAS (6), 1999)

Algebraic representation of bifurcations in global parameter space with Gröbner bases. - Takashi Hisakado; Kohshi Okumura (ISCAS (3), 2001)

Fault location of single-phase transmission lines by Laguerre function. - A. Yonemoto; Takashi Hisakado; Kohshi Okumura (ISCAS (1), 2002)

An improvement of convergence of FFT-based numerical inversion of Laplace transforms. - A. Yonemoto; Takashi Hisakado; Kohshi Okumura (ISCAS (5), 2002)

Characterization of a simple communication network using Legendre transform. - Takashi Hisakado; Kohshi Okumura; Vladimir Vukadinovic; Ljiljana Trajkovic (ISCAS (3), 2003)

Estimation of transmission line parameters by adaptive inverse scattering. - A. Yonemoto; Takashi Hisakado; Kohshi Okumura (ISCAS (4), 2003)

An implementation of numerical inversion of Laplace transforms on FPGA. - A. Yonemoto; Takashi Hisakado; Kohshi Okumura (ISCAS (4), 2003)

Logically reversible arithmetic circuit using pass-transistor. - Takashi Hisakado; Hiroyoshi Iketo; Kohshi Okumura (ISCAS (2), 2004)

Moore test using Gray code. - Takashi Hisakado; Kohshi Okumura (ISCAS (3), 2005)

Algebraic representation of error bounds for describing function using Groebner base [nonlinear circuit analysis example]. - Masakazu Yagi; Takashi Hisakado; Kohshi Okumura (ISCAS (3), 2005)

Signal expression based on equivalence of time resolution and quantization level. - Kazuma Hayashi; Takashi Hisakado (ISCAS, 2006)

Efficient Applications of Invariants to Harmonic Balance Equation Using Gröbner Base. - Masakazu Yagi; Takashi Hisakado (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2007)

Indirect extension of the image theory to partial inductance calculations. - Umberto Paoletti; Takashi Hisakado; Osami Wada (IEICE Electron. Express, 2008)

An Algebraic Approach to Guarantee Harmonic Balance Method Using Gröbner Base. - Masakazu Yagi; Takashi Hisakado; Kohshi Okumura (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2008)

Importance and Limitations of Modeling Parasitic Capacitance between Package and PCB for Power Bus Noise and Radiation. - Umberto Paoletti; Takashi Hisakado; Osami Wada (IEICE Trans. Commun., 2009)

Improvement of reproducibility of DPI method to quantify RF conducted immunity of LDO regulator. - Tohlu Matsushima; Nobuaki Ikehara; Takashi Hisakado; Osami Wada (EMC Compo, 2013)

Relation between internal terminal voltage and immunity behavior of LDO regulator circuits. - Hidetoshi Miyahara; Nobuaki Ikehara; Tohlu Matsushima; Takashi Hisakado; Osami Wada (EMC Compo, 2015)

Equivalent-Circuit Model for Meta-Atoms Consisting of Wired Metallic Spheres. - Takashi Hisakado; Keisuke Yoshida; Tohlu Matsushima; Osami Wada (IEICE Trans. Electron., 2017)

Equivalent-Circuit Model with Retarded Electromagnetic Coupling for Meta-Atoms of Wired Metallic Spheres. - Katsuya Ohishi; Takashi Hisakado; Tohlu Matsushima; Osami Wada (IEICE Trans. Electron., 2018)

A process scalable voltage-reference-free temperature sensor utilizing MOSFET threshold voltage variation. - Shogo Harada; Mahfuzul Islam 001; Takashi Hisakado; Osami Wada (A-SSCC, 2021)

Flash ADC Utilizing Offset Voltage Variation With Order Statistics Based Comparator Selection. - Takehiro Kitamura; Mahfuzul Islam 001; Takashi Hisakado; Osami Wada (ISQED, 2021)

Performance Improvement of Order Statistics Based Flash ADC Using Multiple Comparator Groups. - Takehiro Kitamura; Mahfuzul Islam 001; Takashi Hisakado; Osami Wada (NEWCAS, 2022)

Circuit analysis of radiation reaction in metamaterials by retarded electromagnetic coupling. - Ryoma Nakata; Takashi Hisakado; Tohlu Matsushima; Osami Wada (IET Circuits Devices Syst., 2022)

Low-Power Design of Digital LDO With Nonlinear Symmetric Frequency Generation. - Shun Yamaguchi; Mahfuzul Islam 001; Takashi Hisakado; Osami Wada (IEEE Trans. Circuits Syst. II Express Briefs, 2022)

Order Statistics Based Low-Power Flash ADC with On-Chip Comparator Selection. - Takehiro Kitamura; Mahfuzul Islam 001; Takashi Hisakado; Osami Wada (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2022)

Demonstration of Order Statistics Based Flash ADC in a 65nm Process. - Mahfuzul Islam 001; Takehiro Kitamura; Takashi Hisakado; Osami Wada (ASP-DAC, 2023)

A Fully Synchronous Digital LDO with Built-in Adaptive Frequency Modulation and Implicit Dead-Zone Control. - Shun Yamaguchi; Mahfuzul Islam 001; Takashi Hisakado; Osami Wada (ASP-DAC, 2023)

An Adaptive-Sampling Digital LDO with Statistical Comparator Selection Achieving 99.99% Maximum Current Efficiency and 0.25ps FoM in 65nm. - Shun Yamaguchi; Takashi Hisakado; Osami Wada; Mahfuzul Islam 001 (A-SSCC, 2023)

CMOS Temperature Sensor Utilizing Gate-length-based Threshold Voltage Modulation. - Mahfuzul Islam 001; Shogo Harada; Takashi Hisakado; Osami Wada (NEWCAS, 2023)

Fully Integrated Switched-Capacitor DC-DC Converter With Self-Recovery Hysteresis Control. - Koji Kikuta; Takashi Hisakado; Mahfuzul Islam (SOCC, 2024)

Design of Reference-free Flash ADC With On-chip Rank-based Comparator Selection Using Multiple Comparator Groups. - Takehiro Kitamura; Takashi Hisakado; Osami Wada; Mahfuzul Islam 001 (IPSJ Trans. Syst. LSI Des. Methodol., 2024)

Self-recovery hysteresis control based on-chip SC DC-DC converter robust to load fluctuation. - Koji Kikuta; Takashi Hisakado; Mahfuzul Islam 001 (ASP-DAC, 2025)