案例2 x波段平衡式lna设计工程220 ghz.pdfVIP

284 IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, VOL. 18, NO. 4, APRIL 2008 A 220 GHz Single-Chip Receiver MMIC With Integrated Antenna Sten E. Gunnarsson, Student Member, IEEE , Niklas Wadefalk, Jan Svedin, Member, IEEE , Sergey Cherednichenko, Iltcho Angelov, Member, IEEE, Herbert Zirath, Member, IEEE, Ingmar Kallfass, and Arnulf Leuther State Physics (IAF), Freiburg 79108, Germany. —This letter presents the design and characterization of Digital Object Identifier 10.1109/LMWC.2008.918959 a 220 GHz microstrip single-chip receiver monolithic microwave integrated circuit (MMIC) with an integrated antenna in a 0.1 m GaAs metamorphic high electron mobility transistor technology. The receiver MMIC consists of a novel slot-square substra ens feed antenna, a three-stage low noise amplifier, and a sub-harmon- ically pumped resistive mixer. The receiver MMIC is mounted on a 12 mm silicon substra ens which focuses the radiation from the calibration loads to the on-chip antenna through an opening in the backside metallization of the MMIC. The double sideband noise figure of this quasioptical receiver is as low as 8.4 dB (1750 K) at 220 GHz luding the losses in the antenna and in the lens. To the best of the authors’ knowledge, this work demonstrates the highest integration level versus operating frequency for a MMIC ever published, regardless of technology. Index Terms—G-band, GaAs, imaging, metamorphic high elec- tron mobility transistor (mHEMT), microstrip, millimeter-wave, monolithic microwave integrated circuit (MMIC), multifunctional, quasioptical, single-chip, slot-square substra ens feed antenna, 220 GHz.