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15 July 2010 High power local oscillator sources for 1-2 THz
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Recent results from the Heterodyne Instrument for 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 beyond HIFI and provide demonstration of how power combining of GaAs Schottky diodes can be used to increase both power and upper operating frequency for heterodyne receivers. Availability of power levels greater than 1 watt in the W-band now makes it possible to design a 1900 GHz source with more than 100 microwatts of expected output power.
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Imran Mehdi, Bertrand Thomas, Robert Lin, Alain Maestrini, John Ward, Erich Schlecht, John Gill, Choonsup Lee, Goutam Chattopadhyay, and Frank Maiwald "High power local oscillator sources for 1-2 THz", Proc. SPIE 7741, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V, 774112 (15 July 2010);

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