| 2021 | ISCAS | A Delta-Sigma-Modulation Multi-Channel Network with Improved Noise-Shaping Characteristics. | Tomoaki Koizumi, Takao Waho, Hitoshi Hayashi |
| 2010 | ISCAS | Enhancement of comparator operation speed by using negative-differential-resistance devices. | Tomohiko Ebata, Uichiro Omae, Kazuya Machida, Keita Hoshi, Takao Waho |
| 2009 | ISCAS | A Bandpass Continuous-time SigmaDelta Modulator using a Parallel-DAC to Reduce Jitter Sensitivity. | Fumiyuki Adachi, Kazuya Machida, Takao Waho |
| 2007 | ISCAS | A Four-Resonant-Tunneling-Diode (4RTD) NAND/NOR Logic Gate. | Takao Waho, Akinori Yamada, Hiroki Okuyama, Victor Khorenko, Thai Do, Werner Prost |
| 2006 | ISCAS | A 6-bit low-power compact flash ADC using current-mode threshold logic gates. | Shunsuke Akiyama, Takao Waho |
| 2005 | ISCAS | A novel oscillation circuit using a resonant-tunneling diode. | Naokazu Muramatsu, Hiroshi Okazaki, Takao Waho |
| 2004 | ASPDAC | A dynamic element matching circuit for multi-bit delta-sigma modulators. | Ryozo Katoh, Shin-ya Kobayashi, Takao Waho |
| 2004 | ISCAS | A novel delta-sigma modulator using resonant-tunneling quantizers. | Masaru Chibashi, Keisuke Eguchi, Takao Waho |