BICEP阵列用220和270 GHz带通滤波器的设计与性能
Design and Performance of 220 and 270 GHz Bandpass Filters for BICEP Array
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中文总结 AI 辅助
针对南极BICEP阵列的CMB偏振测量需求，设计不含并联电感的220、270 GHz带通滤波器，经Sonnet仿真优化噪声，220 GHz模块已在南极完成测试，270 GHz模块正待接收机性能测量。
中文摘要 AI 辅助
BICEP阵列（BA）是BICEP/Keck系列实验的最新版本，旨在利用位于南极的小孔径偏振计测量宇宙微波背景（CMB）的偏振。为约束这些接收机的频率响应，每个探测器串联耦合一个带通滤波器（BPF）。这些BPF的电路采用串联电容、并联电容及串联电感，关键是不含并联电感，这简化了制造过程。滤波器通过Sonnet设计与仿真，并结合大气和CMB的负载效应进行噪声优化。多个220 GHz探测器模块已在南极完成频率响应测量，270 GHz探测器模块近期已开始实验室测试，其在BA接收机中的性能将于今年冬季测量。
英文摘要
The BICEP Array (BA) is the latest in the BICEP/ Keck series of experiments that aim to measure the polarization of the cosmic microwave background (CMB) with small aperture polarimeters located at the South Pole. To constrain the frequency response of these receivers, each detector is serially coupled to a band-pass filter (BPF). The electric circuits of these BPFs utilize series and shunt capacitors as well as series inductors, but critically do not include shunt inductors which simplifies fabrication. The filters are designed and simulated with Sonnet, and optimized for noise by considering loading from the atmosphere and the CMB. Multiple 220 GHz detector modules have had their frequency response measured at the South Pole. The 270 GHz detector modules have recently begun testing in a lab setting, and their performance in a BA receiver will be measured this winter.
