An Analog Wide-Bandwidth Baseband Chain for 12Gbps 256QAM Direct-Conversion Receiver

This paper presents a broadband low-power baseband designed for a zero-IF phased-array receiver. It can support up to 12 Gbps 256QAM and 17Gbps 32QAM signalling. Baseband circuit provides filtering for RF channel bandwidths between 1.4 GHz to 6 GHz in 16 different steps. It incorporates variable-gai...

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Bibliographic Details
Main Authors: Jalali, B., Moretto, M., Singh, A., Shahramian, S., Baeyens, Y.
Format: Conference Proceeding
Language:English
Subjects:
Active filters
analog baseband
Bandwidth
Baseband
Gain
Low pass filters
Modulation
phased array
Receivers
tunable active filters
variable gain amplifier
zero-IF receiver
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Summary:This paper presents a broadband low-power baseband designed for a zero-IF phased-array receiver. It can support up to 12 Gbps 256QAM and 17Gbps 32QAM signalling. Baseband circuit provides filtering for RF channel bandwidths between 1.4 GHz to 6 GHz in 16 different steps. It incorporates variable-gain-amplifiers with total tuning range of 40 dB. DC offset up to +/-2.3mA at mixer output is cancelled. Baseband consumes 100mW per I and Q channel using double supplies of 1.5 V and 2.5 V. Design is fabricated in 0.18,..., m SiGe BiCMOS process with f T / f MAX of 240/270GHz.
ISSN:2375-0995
DOI:10.1109/RFIC.2018.8429028