Deployment Of A Fully Integrated 360GHz Schottky Diode Based Receiver At The Mexican Large Millimetre TelescopePaper (INST7)
Tue, 10 Nov 2020 12:00am to 12:15am
A room temperature sub-mm-wave Schottky barrier diode heterodyne receiver system (the Collaborative Heterodyne Astronomical Receiver for Mexico aka CHARM) operating at ~360GHz, has been deployed at the Large Millimetre Telescope, Mexico. The receiver is fully integrated as a turn-key system, and uses a double-sideband subharmonic mixer with an average noise equivalent system temperature of 1,000K. The system back-end signal processing incorporates four wide-band digital spectrometers, with a combined instantaneous IF bandwidth of 10.4GHz for both upper and lower side-bands, and a channel spectral resolution of 1.2MHz. The system has observed first light with the LMT in the sub-millimetre range.
Authors: Daghestani, Nart; Cahill, Fiachra; Obeed, Ali; Gallagher, Eimear; Colin-Beltran, Edgar; Sanchez-Arguelles, David; Hughes, David; Kurtz, Stan; Fuller, Gary; Dunstan, Martin; Parkes, Steve; Ellison, Brian N
National Autonomous University of Mexico, National Institute of Astrophysics, Optics and Electronics, STAR-Dundee, STFC Rutherford Appleton Laboratory, The University of Manchester