A Bargraph IR-UWB pulse generator with Adaptive PSD for medical applications using a 130nm CMOS Process

A Bargraph IR-UWB transmitter with Adaptive PSD for medical applications using a 130nm CMOS Process is proposed in this paper. This circuit produces a pulse with up to eight monocycles that are inversely proportional to the power bandwidth. The complete circuit is composed of eight Edge Combiners Stage (ECS), a Bargraph circuit and a broadband antenna. This circuit operates at a central frequency of ≈5.2 GHz. The post-layout simulations were performed using CMOS 130 nm libraries in LTSpice for a Pulse Repetition Frequency (PRF) of 200 MHz at 1.2V power supply voltage, and the results show monocycles with amplitude of 100mV at output. The average power consumption ranging of 419 μW to one oscillation and 715 μW to eight monocycles per pulse. The gain of antenna is 4dB and s11 parameter in same frequency is the -12dB. The core chip size occupies a small area of 78 μm × 97 μm (without pads).