Q-band bandpass filter designs in heterodyne receiver for radio astronomy
Q-band bandpass filter designs in heterodyne receiver for radio astronomy
复制标题
射电天文外差接收机中的 Q 带带通滤波器设计
DOI：
10.1109/apccas.2008.4745966
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Chau
中科院分区：
文献类型：
--
作者：
Yo;Yu;Yuh;Chau
本文提出了两个Q波段带通滤波器的设计，有针对性的应用在阿塔卡马大型毫米波和亚毫米波阵列（阿尔马）射电望远镜。要求带通滤波器能抑制15.2~29 GHz的低频段，并在31.3~45 GHz的通带内保持最小损耗。首次提出了基于WR 22波导的带通滤波器。具体地，测量的带内插入损耗约为0.4 dB，并且下边带抑制优于34 dB。为了进一步减小电路尺寸，并便于与接收机中的其他MMIC集成，还展示了基于GaAs工艺的平面滤波器设计。它将应用于外差接收机设计的多芯片模块版本，以实现更紧凑的模块尺寸。
This paper presents two Q-band bandpass filter designs that are targeted for application in the Atacama large millimeter-wave and submillimeter-wave array (ALMA) radio telescope. The bandpass filter is required to reject the lower side band from 15.2~29 GHz and retain minimum loss across the passband of 31.3~45 GHz. The bandpass filter based on WR22 waveguide is first presented. Specifically, the measured in-band insertion loss is around 0.4 dB, and the rejection of lower sideband is better than 34 dB. To further reduce the circuit size and to ease the integration with other MMICs in the receiver, a planar filter design based on GaAs process is also demonstrated. It will be applied to the multi-chip module version of the heterodyne receiver design to achieve more compact module size.
适用于 ALMA 频段 8 的 385-500 GHz 低噪声超导体-绝缘体-超导体混频器
DOI：
--
发表时间：
2006
期刊：
IEICE Trans.Electron. E39
影响因子：
--
作者：
W.L.Shan;S.Asayama;M.Kamikura;T.Noguchi;S.C.Shi;Y.Sekimoto
通讯作者：
Y.Sekimoto