Hua Chen;Yuzhong Xiao;Zhenqi Chen;Run Chen;Zhaohui Wu;Bin Li
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引用次数: 0
Abstract
This brief presents an IEEE 802.15.4z-compliant impulse-radio ultra-wideband (IR-UWB) transmitter for an indoor positioning system. Controlled by the digital baseband, a current-mode digital power amplifier (DPA) generates programmable pulse waveforms, ensuring optimal spectrum utilization and sidelobe suppression. Uniquely, it can directly measure AM-PM distortion caused by non-linear power networks, offering an exclusive compensation method to enhance linearity and elevate in-band spectrum utilization. As a proof-of-concept, a prototype was implemented in a 22-nm FD-SOI process. The measurement result demonstrates that the design can support channels from 6.5 to 10 GHz with 13 dBm peak output power. After calibration, the output spectrum has an in-band spectrum utilization of 81% at peak output power. The chip consumes 33.4 mW at a maximum output power spectral density of −41.3 dBm/MHz.
期刊介绍：
TCAS II publishes brief papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes:
Circuits: Analog, Digital and Mixed Signal Circuits and Systems
Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic
Circuits and Systems, Power Electronics and Systems
Software for Analog-and-Logic Circuits and Systems
Control aspects of Circuits and Systems.
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