Title :
An 80 GHz SiGe Quadrature Receiver Frontend
Author :
Dehlink, Bernhard ; Wohlmuth, Hans-Dieter ; Aufinger, Klaus ; Weiss, Franz ; Scholtz, Arpad L.
Author_Institution :
Vienna Univ. of Technol.
Abstract :
An in-phase/quadrature (I/Q) receiver frontend for communication and sensing (e.g. radar) applications in the frequency range between 75 and 86 GHz is presented. The frontend includes a low-noise amplifier (LNA), two down-conversion Gilbert mixers, a branchline coupler for the generation of the in-phase and quadrature LO signals, and LO buffers. The circuit was designed and fabricated in a 200 GHz fT SiGe:C bipolar technology. The chip performance was characterized by on-wafer measurements. From 75 GHz to 86 GHz, the frontend exhibits a single sideband noise figure of 11 dB, and a conversion gain that is higher than 28 dB. The input-referred compression point is -16 dBm. The chip occupies an area of 1000mum times 1100mum. The circuit works from a positive supply voltage of 5.5 V and draws 195 mA
Keywords :
integrated circuit design; low noise amplifiers; millimetre wave receivers; mixers (circuits); 11 dB; 195 mA; 5.5 V; 75 to 86 GHz; LNA; LO buffers; LO signals; SiGe:C; bipolar technology; branch line coupler; communication applications; down-conversion Gilbert mixers; integrated circuit design; low-noise amplifier; on-wafer measurements; quadrature receiver front end; sensing applications; Coupling circuits; Frequency; Germanium silicon alloys; Low-noise amplifiers; Noise figure; Radar applications; Semiconductor device measurement; Signal generators; Silicon germanium; Voltage;
Conference_Titel :
Compound Semiconductor Integrated Circuit Symposium, 2006. CSIC 2006. IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
1-4244-0126-7
Electronic_ISBN :
1-4244-0127-5
DOI :
10.1109/CSICS.2006.319962
