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A molecule dynamics model and details of a large electrical volume coaxial spectrometer are presented in this paper. The molecule dynamics model gives successful molecular signal decay predictions in coaxial spectrometers and shows that our current design is beyond the wall collision limit. The dimensions of the large electrical volume coax and a solution for practical fabrication of the transmission...
A room-temperature chirped pulse Fourier transform microwave spectrometer was recently demonstrated using a WRD750 double ridge waveguide. The operation frequency range, 7.5 GHz to 18 GHz, is limited by the waveguide, and the effective sensing area is confined within the small region between the two ridges. This paper shows a new overmoded coaxial cable spectrometer design utilizing a Hamming function...
A two-pole, substrate-integrated, high quality(Q)-factor absorptive bandstop filter is demonstrated that exhibits enhanced selectivity over traditional reflective bandstop filter designs and higher Q-factor components than previous absorptive designs. With a Q-factor of 729, the presented filter has a peak isolation of 30 dB, a narrow 10-dB rejection bandwidth of 3.9 MHz that is tunable over 3.4–3...
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