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- W1936553685 abstract "This paper describes a direct-conversion E-band transmitter (TX) in 40 nm bulk CMOS. As millimeter-wave (mm-Wave) circuits are vulnerable to process variations including the mismatch between interconnects, this E-band TX design is conducted in a layout floor-plan oriented way. Compact and symmetrical floor-plans of poly-phase filter (PPF) and I/Q modulator are presented in this work to suppress the LO feed-through (LOFT) and I/Q imbalance over both 71-76 and 81-86 GHz bands. In addition, a systematic design methodology is proposed for the mm-Wave PPF to reduce required EM simulations. The calibration methods used in this design are easy to implement for further reducing LOFT and I/Q imbalance with negligible impact on other TX performance metrics. The 0.225 mm <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sup> E-band TX achieves a measured output power of 12 dBm and efficiency of 15% with about 15 GHz bandwidth. It features an uncalibrated I/Q imbalance of less than 30 dB from 62.5 to 85.5 GHz. The calibration circuits further reduce the I/Q imbalance by about 4 dB and ensure the LOFT of less than -30 dBc over more than 30 dB output dynamic range. The presented TX achieves 4.5 Gb/s 64-QAM and 14 Gb/s 16-QAM." @default.
- W1936553685 created "2016-06-24" @default.
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- W1936553685 date "2015-11-01" @default.
- W1936553685 modified "2023-10-16" @default.
- W1936553685 title "A 40 nm CMOS E-Band Transmitter With Compact and Symmetrical Layout Floor-Plans" @default.
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- W1936553685 doi "https://doi.org/10.1109/jssc.2015.2456918" @default.
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