High-linearity RFIC receiver front-end

高线性度 RFIC 接收器前端

• 批准号: 486207-2015
• 负责人: Long, John
• 金额: $ 1.81万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=585463
• 关键词: linearity; RFIC; receiver; front; end

Universal wireless connectivity is enabling an internet of things (IoT) to realize automated communication between many devices. However, numerous wireless frequency bands must be supported in order to implement connectivity world-wide. BlackBerry's ability to support different bands in their current radio receiver designs is limited primarily by the requirement for dedicated front-end filters, which are used to reject out-of-band signals. The problem is exacerbated for IoT devices which must be physically small and inexpensive. The work proposed in this Engage project is expected to resolve these limitations and enable IoT devices with universal connectivity. The proposed designs are based on passive switching mixers, which are known for their high linearity. These mixers also work as tunable filters when combined with reactive elements. Tunable backend filtering helps to reject unwanted blockers and decrease the performance required from dedicated front-end filters. High-linearity wideband RF amplifiers (front- and back-end) and baseband/IF filtering concepts aimed at reducing the cost and complexity of a complete radio receiver for IoT applications will also be investigated.

通用无线连接使物联网（IoT）能够实现自动通信 在许多设备之间。然而，必须支持许多无线频带，以便实现无线通信。 连接世界各地。BlackBerry在其当前无线电接收器设计中支持不同频段的能力 主要受限于专用前端滤波器的要求，这些滤波器用于抑制带外 信号.物联网设备必须体积小且价格便宜，这一问题更加严重。工作 在这个Engage项目中提出的，预计将解决这些限制，并使物联网设备具有通用 连通性。 所提出的设计是基于无源开关混频器，这是已知的高线性度。这些 当与电抗元件组合时，混频器还用作可调谐滤波器。可调后端过滤有助于 拒绝不需要的阻塞，并降低专用前端滤波器所需的性能。高线性 宽带RF放大器（前端和后端）和基带/IF滤波概念，旨在降低成本 还将研究用于物联网应用的完整无线电接收器的复杂性。