InP HBT IC Technology for Terahertz Frequencies: Fundamental Oscillators Up to 0.57 THz. - Munkyo Seo; Miguel Urteaga; Jonathan Hacker; Adam Young; Zach Griffith; Vibhor Jain; Richard Pierson; Petra Rowell; Anders Skalare; Alejandro Peralta; Robert Lin; David Pukala; et al. (IEEE J. Solid State Circuits, 2011)