A Fully Integrated Programmable 6.0-8.5-GHz UWB IR Transmitter Front-End for Energy-Harvesting Devices
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
IEEE Journal of Solid-State Circuits, Volume 55, issue 7
AbstractUltra-wideband impulse radio transceivers are becoming a key building block for establishing ultralow power wireless sensor networks. However, impulse radio transmitters commonly suffer from a low spectral quality and a coarse frequency tuning resolution, which limits their global applicability. In this article, we present a fully integrated ultralow power impulse radio transmitter front-end (TFE) whose pulse shaping capabilities and integrated output matching network make it globally applicable up to a 4-MHz pulse repetition rate. We demonstrate a digital carrier frequency-tuning method that achieves a 28-MHz resolution over the frequency band of 6.0-8.5 GHz. In addition, we show that the temperature dependence of the TFE's carrier frequency can be compensated digitally over the industrial temperature range from -40°C to 85 °C. The proposed TFE supports energy-harvesting applications particularly well due to its low leakage power level of 380 nW and a high tolerance to power supply transients during pulse generation. It is demonstrated to operate robustly with low-drive regulators powered by low-quality sources. The TFE is fabricated in a 65-nm CMOS process. It generates 1.8-pJ pulses at a 7.5-GHz carrier frequency while consuming 63 pJ per pulse, corresponding to 2.3% efficiency.
energy harvesting, impulse radio, transmitter front-end, ultralow power, ultra-wideband (UWB)
Haapala , T , Rantataro , T & Halonen , K 2020 , ' A Fully Integrated Programmable 6.0-8.5-GHz UWB IR Transmitter Front-End for Energy-Harvesting Devices ' , IEEE Journal of Solid-State Circuits , vol. 55 , no. 7 , 9082107 , pp. 1922-1934 . https://doi.org/10.1109/JSSC.2020.2987734