A Fully‐Integrated Low‐Power Analog Front‐End for ZigBee Transmitter Applications. Issue 3 (1st May 2016)

• Record Type: Journal Article
• Authors: Shi, Zuochen; Yang, Yintang; Li, Di; Liu, Yang
• Is Part Of: Chinese journal of electronics. Volume 25:Issue 3(2016)
• Page Start: 424
• Page End: 431
• Publication Date: 2016-05-01
• Subjects: Analog front‐end -- ZigBee transmitter -- Segmented current‐steering -- Auto‐tuning; CMOS integrated circuits -- low‐power electronics -- radio transmitters -- Zigbee; fully‐integrated low‐power analog front‐end -- ZigBee transmitter applications -- AFE -- digital‐to‐analog converter -- DAC -- low‐pass filter -- LPF -- current‐steering topology -- optimized segmentation method -- successive approximation register -- SAR -- frequency autotuning operation -- performance deterioration -- process voltage and temperature variations -- PVT variations -- CMOS technology -- output 3rd order intercept point -- OIP3 -- size 0.13 mum -- current 4.75 mA -- voltage 1.2 V; Electronics -- Periodicals; Electronics -- China -- Periodicals; Electronics; China; Periodicals; 621.38105
• DOI: 10.1049/cje.2016.05.006
• Languages: English
• ISSNs: 1022-4653

Abstract

Abstract : A low‐power high‐linearity Analog frontend (AFE) composed by a Digital‐to‐analog converter (DAC) and a Low‐pass filter (LPF) is proposed in this paper for ZigBee transmitter applications. The DAC is realized by current‐steering topology which adopts an optimized segmentation method to resolve the contradiction between requirements of linearity and power. A Successive approximation register (SAR) frequency auto‐tuning operation is presented for the LPF to accommodate the performance deterioration due to the Process, voltage and temperature (PVT) variations. Implemented in a 0.13μm CMOS technology, the proposed AFE has been fully integrated in a ZigBee transceiver chip with an area of 1.23mm 2 . The experimental results demonstrate that it achieves a linearity of 30dBm Output 3rd order intercept point (OIP3) and dissipates 4.75mA from a 1.2V supply.