A simple precharged CMOS phase frequency detector. - Henrik O. Johansson (IEEE J. Solid State Circuits, 1998)

Time resolution of NMOS sampling switches used on low-swing signals. - Henrik O. Johansson; Christer Svensson (IEEE J. Solid State Circuits, 1998)

Sampling-rate optimization of an interleaved-sampling front-end. - Henrik O. Johansson; Mark Horowitz (ISCAS (2), 2001)