IMPLEMENTATION OF A CRYOGENIC RECEIVER

这个子项目是利用资源的许多研究子项目之一。 由NIH/NCRR资助的中心拨款提供。对子项目的主要支持 子项目的首席调查员可能是由其他来源提供的， 包括美国国立卫生研究院的其他来源。为子项目列出的总成本可能 表示该子项目使用的中心基础设施的估计数量， 不是由NCRR赠款提供给次级项目或次级项目工作人员的直接资金。 这一分项目(第三阶段)旨在实施一个低温接收器。对于此接收器系统，我们需要来自某公司(如Spacek Labs，Inc.)的Ku和Ka频段的低温低噪声放大器(LNA)。以为射电天文学和太空建造这样的设备而闻名。LNA输入将通过定制的低温接收器保护开关进行保护。低温LNA、开关和探头将安装在一个托板上，该托板由发展中的低温恒温器容纳。低温恒温器外部的组件包括Ka波段收发器、可能由DSP控制的Acert BN2脉冲编程器组成的电子设备，以及基于AP240的数据采集系统。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. Primary support for the subproject and the subproject's principal investigator may have been provided by other sources, including other NIH sources. The Total Cost listed for the subproject likely represents the estimated amount of Center infrastructure utilized by the subproject, not direct funding provided by the NCRR grant to the subproject or subproject staff. This subproject (phase 3) is intended to implement a cryogenic receiver. For this receiver system we require a cryogenic low-noise amplifiers (LNA) for Ku and Ka frequency bands from a company (e.g. Spacek Labs, Inc.) with the reputation for building such devices for Radio Astronomy and space. The LNA input will be protected with a custom-built cryogenic receiver protector switch. The cryogenic LNA, switches, and probe-head will be mounted on a carrier plate, housed by the developmental cryostat. Components external to the cryostat include Ka-band transceiver, electronics presumably comprised of DSP-controlled ACERT BN2 pulse programmer, and the AP240-based data acquisition system.