High-sensitivity receiver systems for use with RF and THz radio telescopes and commercial systems

用于射频和太赫兹射电望远镜和商业系统的高灵敏度接收器系统

• 批准号: 358707-2013
• 负责人: Belostotski, Leonid
• 金额: $ 2.11万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=637204
• 关键词: sensitivity; receiver; systems; use; RF

The proposed research will build on applicant's strengths by expanding the previously started research and embarking on a new research path. The first research objective, which builds on the past success, is to demonstrate highly sensitive, fully integrated, wideband Square Kilometre Array (SKA) receiver operating at low GHz frequency range. The proposed research will continue applicant's prior work by investigating the implementations of other essential components of the direct-sampling high-gain SKA receiver, such as an anti-aliasing filter, a variable gain amplifier and a calibrated power detector. Once furnished with the additional circuitry, an investigation of adding an optical data transfer system, which will also serve as the ADC by employing a time-based ADC architecture, will also be conducted. This complete receiver will be placed inside a "thick" Vivaldi antenna and will become a very unique system that converts RF broad-band received signal to a digitized optical output. A demonstration of commercial potentials of the highly sensitive receivers are also planned with a development of a high-end GPS receiver equipped with novel low-noise ESD circuitry that is co-designed with the receiver front-end. A proof-of-concept GPS receiver will be designed to validate its characteristics experimentally.A unique noise parameter measurement system for frequency conversion circuits will be developed, as part of the second research objective, to gain a deeper understanding of noise performance of frequency conversion circuits and provide us with design guidelines for their noise minimization.The third research objective is the development of fully integrated cryogenic 460GHz and 830GHz receivers for Cerro Chajnantor Atacama Telescope (CCAT) in Chile. The work will be broken into a number of projects consisting of a design of a fundamental 437.5GHz VCO, 437.5GHz and 830GHz frequency dividers, a phase-locked loop for the 437.5GHz VCO, 460GHz and 415GHz mixers, 22.5GHz LNA and IF-to-based band converter.

是项研究将以申请人的优势为基础，扩展先前已展开的研究，并开拓新的研究途径。第一项研究目标是在过去成功的基础上，展示一种高灵敏度、全集成、宽带平方公里阵列（SKA）接收器，可在低GHz频率范围内工作。所提出的研究将继续申请人先前的工作，通过调查的直接采样高增益SKA接收机的其他重要组成部分，如抗混叠滤波器，可变增益放大器和校准的功率检测器的实现。一旦配备了额外的电路，还将进行增加光学数据传输系统的研究，该系统也将通过采用基于时间的ADC架构来充当ADC。这个完整的接收器将被放置在一个“厚”Vivaldi天线内，并将成为一个非常独特的系统，将RF宽带接收信号转换为数字化的光输出。还计划开发一种高端全球定位系统接收机，配备与接收机前端共同设计的新型低噪声ESD电路，以展示高灵敏度接收机的商业潜力。第二个研究目标是设计一个概念验证的GPS接收机，通过实验验证其特性。深入了解变频电路的噪声性能，为变频电路的噪声最小化设计提供指导。第三个研究目标是开发全集成低温智利Cerro Chajnantor Atacama望远镜（CCAT）的460 GHz和830 GHz接收器。这项工作将分为一系列项目，包括一个基本的437.5GHz VCO，437.5GHz和830GHz分频器，437.5GHz VCO的锁相环，460GHz和415GHz混频器，22.5GHz LNA和IF到基础频段转换器的设计。