Haydl, W.H.W.H.HaydlNeumann, M.M.NeumannVerweyen, L.L.VerweyenBangert, A.A.BangertKudszus, S.S.KudszusSchlechtweg, M.M.SchlechtwegHülsmann, A.A.HülsmannTessmann, AxelAxelTessmannReinert, W.W.ReinertKrems, T.T.Krems2022-03-032022-03-031999https://publica.fraunhofer.de/handle/publica/19495810.1109/75.7550512-s2.0-0032679119A low-cost 94-GHz monolithically integrated coplanar FMCW radar chip has been developed, using 0.15-mu m AlGaAs/InGaAs/GaAs PM-HEMT technology. The chip includes a VCO, electrically tunable over several gigahertz, transmit and receive amplifiers, a mixer, and a directional coupler. The monolithic microwave integrated circuits (MMIC's) are as small as 8 mm2, delivering up to 10 mW of radio frequency (RF) power at a dc power consumption of 0.7 W. The receiver noise figure is 6-7 dB, and the conversion gain is 10 dB.encoplanar MMICFMCW-Radarkoplanare Millimeterwellen621667journal article