Analog Circuit Blocks for 80-GHz Bandwidth Frequency-Interleaved, Linear, Large-Swing Front-Ends

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 dist...

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Bibliographic Details
Published in:IEEE journal of solid-state circuits 2016-09, Vol.51 (9), p.1985-1993
Main Authors: Hoffman, James, Martin-Gosse, Jean-Roland, Shopov, Stefan, Pekarik, Jack J., Camillo-Castillo, Renata, Jain, Vibhor, Harame, David, Voinigescu, Sorin P.
Format: Article
Language:English
Subjects:
Band-pass filters
Bandpass filter (BPF)
Bandwidth
distributed amplifier (DA)
fiber-optic communication ICs
frequency-interleaved transceivers
linear broadband amplifier
Linearity
Metals
millimeter-wave circuits
Modulation
modulator driver
MOS-HBT cascode
PIN diode switch
SiGe BiCMOS
Silicon germanium
Switches
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Summary: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 OP 1-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 (IP 1-dB = 5 dBm per side) receiver amplifier in next-generation instrumentation systems.
ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.2016.2567445