Open AccessPerformance of cascode Class‐EF −1 PA with built‐in techniques for UWB radar toward monitoring of patient actions
Author(s) -
Kumar Rajesh,
Dwari Santanu,
Kanaujia Binod Kumar,
Kumar Sandeep,
Song Hanjung
Publication year - 2020
Publication title -
iet circuits, devices and systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.251
H-Index - 49
ISSN - 1751-8598
DOI - 10.1049/iet-cds.2019.0241
Subject(s) - cascode , electronic engineering , bandwidth (computing) , amplifier , transmitter , radar , computer science , robustness (evolution) , cmos , electrical engineering , broadband , engineering , telecommunications , channel (broadcasting) , biochemistry , chemistry , gene
This work proposes a performance of the cascode Class‐EF −1 power amplifier (PA) for UWB radar transmitter. The cascode Class‐E PA with built‐in techniques overcomes the traditional mismatch and provides good performance of PA. Incurs the resonance and switching effect is observed in cascode Class‐E PA that compensates for the parasitic effects and provides a wide‐impedance range. While design‐II includes negative capacitance and inverse Class‐F, which achieves a redundant performance of wide bandwidth and power‐added efficiency (PAE). Design‐II achieves the redundant performance compared with design‐I. Both design‐I and design‐II are implemented and analysed through simulation and experimental results using RF 65 nm Samsung Magnachip Hynix CMOS process. Design‐I achieves a wide‐impedance bandwidth ranging from 3 to 11.7 GHz with drain efficiency (DE) and maximum PAE of 80 and 73% at the output power of 26.4 dBm. The global efficiency (GE) and error vector magnitude (EVM) of 70 and 5.2% are also achieving for design‐I. The redundant performance in design‐II achieves wide bandwidth with operating frequency range of 2–13 GHz with maximum DE and PAE of 85 and 76%. For design‐II, GE and EVM are investigated as 68 and 4.9% that could validate the accuracy and robustness of the UWB radar.