TY - JOUR AU - Paquette, Michael AB - The Heterodyne Instrument for Far Infrared (HIFI) on ESA's Herschel Space Observatory utilizes a variety of novel RF components in its five SIS receiver channels covering 480- 1250 GHz and two HEB receiver channels covering 1410-1910 GHz. The local oscillator unit will be passively cooled while the focal plane unit is cooled by superfluid helium and cold helium vapors. HIFI employs W-band GaAs amplifiers, InP HEMT low noise IF amplifiers, fixed tuned broadband planar diode multipliers, high power W-band Isolators, and novel material systems in the SIS mixers. The National Aeronautics and Space Administration through the Jet Propulsion Laboratory is managing the development of the highest frequency (1119-1250 GHz) SIS mixers, the local oscillators for the three highest frequency receivers as well as W-band power amplifiers, high power W-band isolators, varactor diode devices for all high frequency multipliers and InP HEMT components for all the receiver channels intermediate frequency amplifiers. The NASA developed components represent a significant advancement in the available performance. This paper presents an update of the performance and the current state of development. TI - THz instrumentation for the Herschel Space Observatory's heterodyne instrument for far infrared JO - Proceedings of SPIE DO - 10.1117/12.552397 DA - 2004-10-08 UR - https://www.deepdyve.com/lp/spie/thz-instrumentation-for-the-herschel-space-observatory-s-heterodyne-e0Nex9t0b8 SP - 486 EP - 497 VL - 5498 IS - 1 DP - DeepDyve ER -