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New capabilities for the Southern 1.2m mm-Wave Telescope

机译:南部1.2m毫米波望远镜的新功能

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In this paper we describe the status of an upgrading program that it is being carried out to modernize the frontand back ends of the Southern 1.2-m mm-Wave Telescope to cover eciently the band from 86 to 115 GHz. Onthe one hand, the new front end will have a sideband-separating conguration to suppress the image band noise.This front end will use one low noise amplier and two Schottky diodes for down conversion. On the other hand,we are developing a modern digital spectrometer, based on the Recongurable Open Architecture ComputingHardware (ROACH), to ease the operation and improve the spectral resolution up to a factor of 4. Moreover,the spectrometer will include IF hybridization capabilities to avoid analog hybrids and, therefore, improve thesideband rejection ratio of the receiver.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
机译:在本文中,我们描述了一项升级计划的现状,该计划正在进行中,以对南部1.2毫米毫米波望远镜的前端和后端进行现代化改造,以有效覆盖86至115 GHz的频带。一方面,新前端将具有边带分离配置以抑制图像频带噪声,该前端将使用一个低噪声放大器和两个肖特基二极管进行下变频。另一方面,我们正在开发基于Recongurable开放式架构计算硬件(ROACH)的现代数字光谱仪,以简化操作并将光谱分辨率提高到4倍。此外,该光谱仪还将包括IF杂交功能,避免使用模拟混合信号,从而提高接收器的边带抑制比。©(2012)COPYRIGHT光电仪器工程师协会(SPIE)。摘要的下载仅允许个人使用。

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