A 0.038mm2 SAW-less Multiband Transceiver Using an N-Path SC Gain Loop

📋 论文概要

该论文提出了一种基于N路径开关电容增益环路的无SAW多频段收发器，通过重新配置实现射频可调发射或接收功能，解决了传统SAW滤波器占用面积大、成本高的问题。

💡 主要创新点

• 提出N路径SC增益环路，可重构为RF可调发射机或接收机，中心频率由LO定义。
• 实现了无SAW滤波器的多频段收发器，面积仅0.038mm²，支持多频段和强干扰抑制。

🏷 关键词

📄 原文摘要

Instituto Superior Tecnico, Lisbon, Portugal 1 2 N-path filtering has been intensely rekindled as a replacement of costly SAW filters, making possible of multiband blocker-tolerant receivers (RXs) at small area and power, e.g., [1]. This paper proposes an N-Path Switched-Capacitor (SC) Gain Loop that is reconfigurable as an RF-tunable transmitter (TX) or RX with LOdefined center frequency. Comparatively, a SAW-less RX should be able to amplify a weak in-band (IB) signal in the presence of large out-of-band (OB) blockers, whereas a SAW-less TX should be able to deliver a large IB signal with low spectral leakage and OB noise. Such discrepancy inspires exploration of an RX-TXcompatible N-path technique to realize a multiband transceiver (TXR) with zero on-chip inductors and external matching components. Our TXR aims at the multiband LTE standard, and comparable performances are achieved at a die size

👥 作者与机构

Gengzhen Qi1, Pui-In Mak1, Rui P. Martins1,2

University of Macau, Macau, China,