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An integrated 520–600 GHz sub-harmonic mixer and tripler combination based on GaAs MMIC membrane planar Schottky diodes

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8 Author(s)
Thomas, B. ; NASA-Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA ; Gill, J. ; Maestrini, A. ; Lee, C.
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We present here the design, development and test of an integrated sub-millimeter front-end featuring a 520-600 GHz sub-harmonic mixer and a 260-300 GHz frequency tripler in a single cavity. Both devices used GaAs MMIC membrane planar Schottky diode technology. The sub-harmonic mixer/tripler circuit has been tested using conventional machined as well as silicon micro-machined blocks. Measurement results on the metal block give best DSB mixer noise temperature of 2360 K and conversion losses of 7.7 dB at 520 GHz. Preliminary results on the silicon micro-machined blocks give a DSB mixer noise temperature of 4860 K and conversion losses of 12.16 dB at 540 GHz. The LO input power required to pump the integrated tripler/sub-harmonic mixer for both packages is between 30 and 50 mW.

Published in:

Infrared Millimeter and Terahertz Waves (IRMMW-THz), 2010 35th International Conference on

Date of Conference:

5-10 Sept. 2010