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A 62-to-68GHz linear 6Gb/s 64QAM CMOS doherty radiator with 27.5%/20.1% PAE at peak/6dB-back-off output power leveraging high-efficiency multi-feed antenna-based active load modulation
(2018)2018 IEEE International Solid-State Circuits Conference (ISSCC)Extreme throughput requirements on future mm-wave systems, e.g., 5G links, necessitates the use of spectrum-efficient modulations that often come with high peak-to-average power ratios (PAPRs). Therefore, there is an increasing need for mm-wave power amplifiers (PAs) with high power back-off (PBO) efficiency, so that wideband large-PAPR signals can be transmitted with high energy efficiency. Among various PA PBO efficiency-enhancement ...Other Conference Item -
A continuous-mode harmonically tuned 19-to-29.5GHz ultra-linear PA supporting 18Gb/s at 18.4% modulation PAE and 43.5% peak PAE
(2018)2018 IEEE International Solid-State Circuits Conference (ISSCC)The 5 th generation (5G) mm-wave systems are expected to support wideband spectrum-efficient modulations (e.g., 64-QAM or 256-QAM) to achieve Gb/s-link-throughput revolution. These complex modulation schemes, however, often come with high-density constellations that demand stringent linearity, i.e. AM-AM and AM-PM, on the mm-wave front-end circuits, in particular, the power amplifiers (PAs). In addition, to support future massive MIMOs, ...Other Conference Item -
A 64GHz full-duplex transceiver front-end with an on-chip multifeed self-interference-canceling antenna and an all-passive canceler supporting 4Gb/s modulation in one antenna footprint
(2018)2018 IEEE International Solid-State Circuits Conference (ISSCC)Millimeter-wave full-duplex (FD) transceivers (TRXs) have the potential to unlock the full throughput of future 5G links. A major challenge in mm-wave FD TRXs is to suppress the wideband modulated self-interference (SI) of the transmitter (TX) to its own receiver (RX) with ~100dB cancellation over a large instantaneous bandwidth. This often requires distributed cancellations across the antenna, RF, and digital domains [1].Other Conference Item