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Title: Local oscillator sub-systems for arayreceivers in the 1-3 THz range
Authors: Mehdi, Imran
Siles, Jose V.
Maestrini, Alain
Lin, Robert
Lee, Choonsup
Schlecht, Erich
Chattopadhyay, Goutam
Keywords: Schottky diodes
frequency multipliers
local oscillators
heterodyne receivers
Issue Date: 5-Jul-2012
Publisher: Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2012.
Citation: SPIE Astronomical Instrumentation, Amsterdam, Netherlands, July 1-4, 2012
Abstract: Recent results from the Heterodyne Instrument for the Far-Infrared (HIFI) on the Herschel Space Telescope have confirmed the usefulness of high resolution spectroscopic data for a better understanding of our Universe. This paper will explore the current status of tunable local oscillator sources with emphasis on building a multi-pixel LO subsystem for the scientifically important CII line around 1908 GHz. Recent results have shown that over 50 microwatts of output power at 1.9 THz are possible with an optimized single pixel LO chain. These power levels are now sufficient to pump array receivers in this frequency range. Further power enhancement can be obtained by cooling the chain to 120 K or by utilizing in-phase power combining technology.
Appears in Collections:JPL TRS 1992+

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