Jayang Yoon Seok Lee Jaehoon Kim Namjin Song Jinseok Koh Joongho Choi Low-noise amplifier path for ultrasound system applications. 244-247 2010 APCCAS https://doi.org/10.1109/APCCAS.2010.5774981 conf/apccas/2010 db/conf/apccas/apccas2010.html#YoonLKSKC10