ISSTT Proceedings

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A Compact 340 GHz Receiver Array Front-End

Authors:
Simon P. Rea, M. Henry, H. Wang, B. Alderman, B. N. Ellison, Jeanne Treuttel, I. Maestrojuan Biurrun, P. de Maagt
Abstract:
This paper presents the design and measured performance of a compact 8-element Schottky diodebased heterodyne receiver array front-end. The work has been undertaken to address the growing interest in multi-pixel sub-millimetre wave instrumentation for remote sensing of the Earth. The array specification is based on the requirements of the STEAM-R instrument concept, part of the payload of the PREMIER Earth Explorer 7 candidate mission. STEAM-R, a limb-sounding radiometer operating in the spectral band 320-360 GHz, is designed to monitor the upper troposphere and lower stratosphere of the Earth’s atmosphere with high vertical resolution from low Earth orbit. The instrument employs an array of receivers to provide 14 simultaneous closely-spaced views through the atmospheric limb. The receivers are accommodated in the instrument front-end in two sub-sets of 7 receivers, with each set detecting orthogonal polarisations. The spatial viewing requirements of the instrument, and a preliminary analysis of the instrument fore-optics, show that a feedhorn spacing of about 11 mm is required. An 8-element receiver array front-end, presented in Fig. 1, has been developed to demonstrate a compact receiver array suitable for STEAM-R.
Categories:
Detectors
Year:
2012
Session:
3
Full-text:
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Page Number(s):
17