Here, a wideband low‐noise amplifier (LNA) based on the two‐stage cascade configuration is presented to improve the radiofrequency (RF) performance. With the common gate (CG) input stage, the proposed LNA provides wideband input matching, while the wideband gain response was achieved using the peaking inductors inserted at the drain terminals of each stage. With a standard 0.18thinmathspaceμm CMOS process, the chip area of the proposed wideband LNA is only 0.116 mm2. However, it consumes a 5.4 mW power from a supply voltage of Vdd=1thinmathspaceV. From the post‐layout simulation results, it achieves maximum power gain S21 of 11.13 dB at 8.5 GHz, input return loss S11 below −9.44 dB, reverse isolation S12 less than −60 dB, and small group delay variation of ±97 ps across 8.5–20 GHz frequency range. Moreover, noise figure (NF) lies in the range of 2.19–3.23 dB, whereas the NF minimum (NnormalFmin) varies in the range of 1.55–2.91 dB for 8.5–20 GHz frequency range. Apart from this, the proposed LNA achieves an IIP3 of 0.96 dBm, when a two‐tone test is performed with a frequency spacing of 50 MHz.

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The present work explores the use of MEMS (Microelectromechanical system) sensors in electronic nose system for the measurement of prominent industrial pollutants as well as proposes a methodology for the correction of drift induced in sensors during prolonged use for measurement of corrosive compounds. MEMS sensors have the advantages of low recovery and response time, less power consumption and improved sensitivity. An electronic nose system is developed to quantify the four major pollutants emitted from various process industries i.e., Hydrogen sulfide (H2S), Carbon monoxide (CO), Ammonia (NH3), and Ethanol (C2H5OH). All the four pollutants are having major environmental and human health hazards and rapid quantification is the need of the hour. A drift correction algorithm was developed using the design of experiments and robust regression to correct the drift induced in the sensors for the period. The experiments consisted of eight (8) experimental sets of the mixture of H2S, CO, NH3, and C2H5OH carried out at the start and after a gap of one (1) year on the same sensor array. The methodology adapted consisted of mapping the response of sensors after one year to that observed at the very start (Day 1) of experimentation. The results showed the successful implementation of the methodology with the RMSE values being (significantly reduced) 0.235, 0.354, 0.145, and 0.651 respectively for the studied four odorants i.e., H2S, NH3, CO, and C2H5OH.