A 108-GHz InP-HBT monolithic push-push VCO with low phase noise and wide tuning bandwidth. - Kevin W. Kobayashi; Aaron K. Oki; Liem T. Tran; John C. Cowles; Augusto Gutierrez-Aitken; Frank Yamada; Thomas R. Block; Dwight C. Streit (IEEE J. Solid State Circuits, 1999)