A dual-polarization sideband separating Schottky based receiver for ALMA Band 2 + 3 Warm Cartridge Assembly
A dual-polarization sideband separating Schottky based receiver for ALMA Band 2 + 3 Warm Cartridge Assembly
复制标题
用于 ALMA Band 2 3 Warm Cartridge 组件的双偏振边带分离肖特基接收器
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
P. Yagoubov
中科院分区：
文献类型：
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作者：
B. Thomas;J. Ceru;F. Villa;P. Yagoubov
本文介绍了一种采用半导体肖特基和MMIC技术的双极化边带分离接收机的研制，该接收机工作在室温下，频率范围从67 GHz到116 GHz，以满足阿尔马频带2+3的扩展频率范围。先前已经报道了对单极化接收机原型的初步测量，在整个67-116 GHz范围内，SSB接收机噪声温度范围在3000 K和8000 K之间，边带间隔在13 dB和17 dB之间[3]。介绍了一种改进的双极化边带分离接收机，它采用一个大功率本振源来泵浦四个工作在正交模式的基波平衡混频器。测试结果包括噪声系数、增益平坦度、边带比以及频谱纯度。
We present in this paper the development of a dualpolarized sideband separating receiver using semiconductor Schottky and MMIC technology operating at room temperature from 67 GHz to 116 GHz to meet the extended frequency range of ALMA Band 2+3. Preliminary measurements on a single polarization receiver prototype have previously been reported, exhibiting a SSB receiver noise temperature ranging between 3000K and 8000K over the entire 67-116 GHz, and a side band separation between 13dB and 17dB [3]. An upgrade of the sideband separating receiver for dual-polarization is described, featuring a single powerful LO source to pump all four fundamental balanced mixers operating in quadrature mode. Test results including noise figure, gain flatness, sideband ratio, as well as spectral purity are described hereafter.