Analog Circuit Blocks For 80-Ghz Bandwidth Frequency-Interleaved, Linear, Large-Swing Front-Ends
IEEE Journal of Solid-state Circuits(2016)
摘要
Critical analog electronic circuits for a possible 80-GHz bandwidth, frequency-interleaved, PAM-4 or discrete-multitone (DMT) linear fiber-optic front-end are implemented in a 90-nm SiGe BiCMOS technology. These include a novel vertically coupled, 40-100-GHz bandpass filter, an 80-GHz bandwidth distributed optical modulator driver with a measured output compression point of 13 dBm per side, corresponding to 7 V-pp output differential swing, and a 125-GHz bandwidth PIN-diode SPST switch with a OP1-dB of 23 dBm, and over 22 dB of isolation up to 160 GHz. The linear modulator driver can also be used as a high linearity (IP1-dB = 5 dBm per side) receiver amplifier in next-generation instrumentation systems.
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关键词
Bandpass filter (BPF),distributed amplifier (DA),fiber-optic communication ICs,frequency-interleaved transceivers,linear broadband amplifier,millimeter-wave circuits,modulator driver,MOS-HBT cascode,PIN diode switch,SiGe BiCMOS
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