毫米波大气探测用信道选择滤波器的设计与实现

2021 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2021-12-17 DOI:10.1109/imarc49196.2021.9714617

A. Bhattacharya, Shrija Bhattacharyya, Mahendra P. S. Bhadoria, Latheef A. Shaik, Harshita Tolani, P. Chakraborty, R. Jyoti

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引用次数: 0

摘要

介绍了毫米波地面测深应用所需的窄带信道选择滤波器的设计与实现。信道频率的选择主要是为了便于10km高空的大气垂直探测。为了适应上述吸收波段，设计了3个相同的中频后端通道(4.9GHz)。因此，提出并制作了一个带通滤波器(BPF)，使用25密耳氧化铝基片，提供344MHz噪声等效带宽。最后，将BPF与谐波抑制滤波器(HRF)集成，以满足20GHz的更宽抑制带。

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Design and Realization of Channel Selection Filter for mm-Wave Atmospheric Sounding Application

This paper presents the design and realization of narrow-band channel selection filter, required for mm-wave ground based sounding applications. The selection of channel frequency is mainly ascertained in order to facilitate the atmospheric vertical sounding upto an altitude of 10km. In order to accommodate above absorption bands, 3 identical IF backend channels (at 4.9GHz) are designed. Hence, one band pass filter (BPF) is proposed and fabricated using 25 mil alumina substrate which provides 344MHz noise equivalent bandwidth. Finally, the BPF is integrated with harmonic reject filter (HRF) in order to meet wider rejection band up to 20GHz.

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2021 IEEE MTT-S International Microwave and RF Conference (IMARC)

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