A 43-97-GHz mixer-first front-end with quadrature input matching and on-chip image rejection
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Date
2021-03
Publication Type
Journal Article
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Abstract
This article presents a wideband millimeter-wave (mmWave) receiver front-end that covers the frequency range from 43 to 97 GHz, supporting the operation in the major parts of the V-, E-, and W-bands. The front-end incorporates a passive mixer-first topology to achieve high linearity and wideband performance. The front-end adopts I/Q generation at the RF port, using a coupled-line coupler (CLC), rather than at the local oscillator (LO) port to mitigate the crosstalk of the overlapping I/Q LO signals especially present at high frequencies. The CLC at the RF input facilitates ultrawide band input matching. The front-end implements the multi-gate gm3 cancellation technique at the IF amplifiers to preserve the linearity and provide gain at the IF section. Image rejection capabilities using a current mode transformer-based IF 90° coupler are implemented on chip and demonstrated with measurements. The front-end prototype is fabricated on the GlobalFoundries 22-nm FD-SOI CMOS process and it demonstrates an ultra-wideband performance across the frequency range 43-97 GHz (2.25:1 bandwidth) with image rejection of up to 32 dB, IIP3 of 1.6-5.2 dBm, and gain of 15 dB. The implementation used is low-IF topology with 3.8-GHz IF frequency and 1-GHz bandwidth. Furthermore, the measurement results show that the front-end supports high-speed modulated signals of up to 6-Gbps 64QAM modulation data.
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published
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Journal / series
Volume
56 (3)
Pages / Article No.
705 - 714
Publisher
IEEE
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Software
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Date collected
Date created
Subject
Front-end; Gm3 cancellation; Image rejection; Linearity; Mixers; Millimeter-wave (mmWave); Mixer-first; Multigated transistors (MGTRs); Receiver; Wideband
Organisational unit
09757 - Wang, Hua / Wang, Hua