Title :
DC to 10-GHz mixer and amplifier GaAs IC´s for coherent optical heterodyne receiver
Author :
Fujita, Shuichi ; Imai, Yuhki ; Yamane, Yasuro ; Fushimi, Hiroshi
Author_Institution :
NTT LSI Lab., of Kanagawa, Japan
fDate :
12/1/1991 12:00:00 AM
Abstract :
The authors describe a number of design techniques that are effective for enhancing sensitivity and bandwidth. A Gilbert-cell circuit with a single-to-balance conversion input buffer and a peaking circuit are adopted for the mixer. In addition, a wideband amplifier is proposed that adopts a novel multiple-feedback cascode FET amplifier configuration with an LC input matching network. Finally, a novel interconnection technique is proposed that improves impedance matching between ICs and the package over a wide frequency range up to 10 GHz. These ICs were fabricated using a 0.2-μm gate self-aligned GaAs MESFET process. These techniques could enable a highly sensitive multigigabit-per-second coherent optical heterodyne receiver to be implemented
Keywords :
III-V semiconductors; Schottky gate field effect transistors; feedback; field effect integrated circuits; gallium arsenide; impedance matching; mixers (circuits); optical communication equipment; receivers; wideband amplifiers; 0 to 10 GHz; 0.2 micron; GaAs; Gilbert-cell circuit; LC input matching network; MESFET process; bandwidth; cascode FET amplifier; coherent optical heterodyne receiver; design techniques; gate self-aligned; impedance matching; input buffer; interconnection technique; mixer; monolithic IC; multiple-feedback; peaking circuit; sensitivity; single-to-balance conversion; wideband amplifier; Broadband amplifiers; Gallium arsenide; Optical amplifiers; Optical buffering; Optical mixing; Optical receivers; Optical sensors; Photonic integrated circuits; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Solid-State Circuits, IEEE Journal of
