Oral Presentation

Development of a waveguide-type multiplexer in 200 GHz band for simultaneous observation of atmospheric molecular lines

Author(s): Kohei Haratani(Nagoya University)

Presenter: Kohei Haratani (Nagoya University)

Our research group is planning to carry out monitoring observations of seven atmospheric molecular lines such as O3, NO, and so on, in 200 GHz band at Syowa station in Antarctica.
We are developing a new wide-band SIS receiver on the atmospheric radiometer, which covers radio frequency (RF) bands of 170-260 GHz.
In this study, we have designed the waveguide-type multiplexer that can divide the RF signal into four frequency bands (179-187 GHz, 199-207 GHz, 226-234 GHz, and 246-254 GHz), and output them to each waveguide port.
In this presentation we will report design of waveguide circuit with the electromagnetic field simulator HFSS, and the measurement result of two prototype multiplexers with a network analyzer in mm band.