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