Title :
A 70–95 GHz SiGe downconverter IC for large-N focal plane arrays
Author :
Bardin, Joseph C. ; Yogeesh, Maruthi Nagavalli ; Erickson, Neal R. ; Narayanan, G.
Author_Institution :
Univ. of Massachusetts Amherst, Amherst, MA, USA
Abstract :
The design, packaging, and characterization of a 70-95 GHz downconverter with 25 GHz of instantaneous bandwidth is presented. The circuit features a novel LO pass-through feature, making it suitable for integration in two-dimensional focal plane arrays with large-N. The chip has been packaged in a waveguide module and, in the packaged configuration, has a noise temperature below 2000 K (9 dB NF) and greater than 23 dB conversion gain, 8 dB input return loss, and 13 dB output return loss over the entire frequency range. The circuit operates with an LO power of just -5 dBm and has a DC power consumption of 170 mW.
Keywords :
Ge-Si alloys; focal planes; millimetre wave integrated circuits; oscillators; LO pass-through feature; SiGe; downconverter IC; frequency 25 GHz; frequency 70 GHz to 95 GHz; large-N focal plane arrays; noise figure 9 dB; noise temperature; packaged configuration; power 170 mW; two-dimensional focal plane arrays; waveguide module; Extraterrestrial measurements; Gain; Noise; Noise measurement; Radio frequency; Silicon germanium; Temperature measurement; Down-converter; Focal-plane array; Millimeter-Wave; Radio Astronomy; Silicon-Germanium; W-band;
Conference_Titel :
Microwave Symposium (IMS), 2014 IEEE MTT-S International
Conference_Location :
Tampa, FL
DOI :
10.1109/MWSYM.2014.6848508
