Abstract. This work proposes a low power single ended wideband CMOS low noise amplifier for low power short-range wireless communication based on IoT. The main novelty lies in significant improvement in bandwidth by using the inverter cell and in noise by noise cancellation topologies. By using active shunt-feedback architecture, the current of the feedback stage is reused on the forward path to improve the current efficiency of the LNA. The complementary characteristic leads to partial second-order distortion cancellation simultaneously. With TSMC 180 nm CMOS process, the proposed LNA presents maximum voltage gain of 15 dB, a minimum noise figure of 1.79 dB and an input 1 dB compression point of -24.65 dBm. It consumes 3 mW from 1.8 V dc supply and occupies a core area of 0.004 mm².

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Abstract. A 2.4 GHz self-differential down-conversion Gilbert cell mixer with current-reuse topology is presented in this paper. This design is targeted for low-power IoT applications. Here, by using a novel self-differential RF input stage with current-reuse topology, the single-ended RF signal can be transferred into differential signals without using a balun. With an applied local oscillator (LO) power of 10 dBm and RF signal of -30 dBm, this mixer demonstrates 9.886 dB of conversion gain, 10.4 dB of noise figure at 5 MHz and an IIP3 of 1.1767dBm in both I/Q branch. The design consumes 1.57 mA from a 1.8 V voltage supply.

Abstract. In this paper, a bandgap voltage reference working with high precision in a wide temperature range is proposed. The proposed bandgap voltage reference adopts self-biased structure without using resistor and operational amplifier. It adopts 6 stages of the proportional to absolute temperature circuit to increase temperature range. And it uses linearity compensation circuit to improve the temperature coefficient. Supported by GSMC 0.13 µm technology, with 1.2V supply voltage, the proposed bandgap voltage reference can generate a steady 66 mV reference voltage. Within the temperature range of -100 to 145 °C, the temperature coefficient is 8.5486 ppm/°C and the line sensitivity is 0.19245 mV/V. And the bandgap voltage reference covers a core area of 0.00396 mm 2 .