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Proceedings Paper

Development of 200-GHz to 2.7-THz multiplier chains for submillimeter-wave heterodyne receivers
Author(s): Jean Bruston; Erich Schlecht; Alain Maestrini; Frank Maiwald; Suzanne C. Martin; R. Peter Smith; Imran Mehdi; Peter H. Siegel; John C. Pearson
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Paper Abstract

Several astrophysics and Earth observation space missions planned for the near future will require submillimeter-wave heterodyne radiometers for spectral line observations. One of these, the Far InfraRed and Submillimeter Telescope will perform high-sensitivity, high-resolution spectroscopy in the 400 to 2700 GHz range with a seven channel super- conducting heterodyne receiver complement. The local oscillators for all these channels will be constructed around state-of-the-art GaAs power amplifiers in the 71 to 115 GHz range, followed by planar Schottky diode multiplier chains. The Jet Propulsion Laboratory is responsible for developing the multiplier chains for the 1.2, 1.7, and 2.7 THz bands. This paper will focus on the designs and technologies being developed to enhance the current state- of-the-art, which is based on discrete planar or whisker contacted GaAs Schottky diode chips mounted in waveguide blocks. We are proposing a number of new planar integrated circuit and device topologies to implement multipliers at these high frequencies. Approaches include substrateless, framed and frameless GaAs membrane circuitry with single, and multiple planar integrated Schottky diodes. Circuits discussed include 200 and 400 GHz doublers, a 1.2 THz tripler and a 2.4 THz doubler. Progress to date, with the implications of this technology development for future Earth and space science instruments, is presented.

Paper Details

Date Published: 28 July 2000
PDF: 11 pages
Proc. SPIE 4013, UV, Optical, and IR Space Telescopes and Instruments, (28 July 2000); doi: 10.1117/12.393985
Show Author Affiliations
Jean Bruston, Jet Propulsion Lab. (United States)
Erich Schlecht, Jet Propulsion Lab. (United States)
Alain Maestrini, Jet Propulsion Lab. (United States)
Frank Maiwald, Jet Propulsion Lab. (United States)
Suzanne C. Martin, Jet Propulsion Lab. (United States)
R. Peter Smith, Cree Inc. (United States)
Imran Mehdi, Jet Propulsion Lab. (United States)
Peter H. Siegel, Jet Propulsion Lab. (United States)
John C. Pearson, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 4013:
UV, Optical, and IR Space Telescopes and Instruments
James B. Breckinridge; Peter Jakobsen, Editor(s)

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