====== WP5 JRA AETHRA ======
AETHRA (Advanced European Technologies for Heterodyne Receivers for Astronomy) aims at exploiting new technologies, such as highly integrated microelectronic semi- or superconducting circuits, to significantly improve the next generation receivers of mm and sub-mm wavelength telescopes, reinforcing European technological and scientific leadership by considerably improving the receiver performance and observing speed of the European-owned world- leading facilities ALMA, APEX, NOEMA and PV. The most effective means to boost the observing speed of those instruments at a reasonable cost consist of:
a) widening the Intermediate/Radio frequency (IR/FR) receiver bandwidths and b) implementing large focal plane arrays (FPAs) of heterodyne receivers. ({{{{:jra:730562_radionet_wp5.pdf|WP5 Description)}}.

**The AETHRA parter:** MPG, IRAM, INAF, OSO, STFC, SRON, OBSPARIS, UOXF, UAH, ESO, Fraunhofer, RUG, UCO, TUD

**The AETHRA tasks:**
  * WP5.1: Semiconductor LNAs and MMIC receivers [MPG, IRAM, INAF, Fraunhofer]
  * WP5.2: Very large Focal Plan Array of SIS mixer receivers [IRAM, OSO, UOXF, UAH]
  * WP5.3: FPA of receivers operating around 1 THz [UOXF, SRON, OBSPARIS, RUG, UAH, UCO, TUD]
  * WP5.4: Subtasks common to Tasks 5.1-5.3 [IRAM, OSO, STFC, OBSPARIS, UOXF, UAH, RUG, UCO, TUD]

This activity is lead by IRAM - Leader C. Kramer

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===== AETHRA Meetings / Teleconferences =====

  * 11-12 April 2017, Grenoble/FR -  [[https://events.mpifr-bonn.mpg.de/indico/event/41/|AETHRA Kick off]] 
  * 7 June 2018, Grenoble/FR + videoconference [[https://events.mpifr-bonn.mpg.de/indico/event/81/| AETHRA Progress Meeting]]
  * 25 September 2019, Grenobel/FR [[https://events.mpifr-bonn.mpg.de/indico/event/133/| AETHRA Progress Meeting]]

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**AETHRA publications:**

{{:jra:10.21105.joss.01231.pdf|QMix: A Python package for simulating the quasiparticle tunneling currents in SIS junctions, John D. Garrett (University of Oxford) and Ghassan Yassin (University of Oxford), published 20 March 2019}}
===== Deliverables =====
The following deliverables are scheduled for WP5:

^No^ Del. Title^Lead beneficairy^Type^Dissemination level^Due date^Submission date^Document^
|D5.7|Multipixel demonstrator of FPA of HEB mixer receivers|OBSPARIS|Demons|Public|31.12.2019|26.1.2021 |{{ :jra:730562_radionet-d5.7_210126.pdf |D5.7}} |
|D5.6|Multipixel FPA demonstrator composed of 2SB SIS mixer receivers operating around 1THz|RUG|Demons|Public|31.12.2019|31.1.2021 |{{ :jra:730562-radionet-d5.6_210131.pdf |D5.6}} |
|D5.5|Multipixel FPA demonstrator composed of miniaturized 2SB receivers operating near 1 mm|IRAM|Demons|Public|31.12.2019|1.1.2021 |{{ :jra:730562_radionet-d5.5_210201.pdf |D5.5}} |
|D5.4|Very wideband RF/IF SIS receiver Designs and test report on prototype wideband mixer built on 2SB technology and operation around 1-mm|OSO|RE|Public|31.12.2019|30.12.2020 |{{ :jra:730562_radionet-d5.4_201230.pdf |D5.4}} |
|D5.3|Multipixel W-band FPA demonstrator composed of cryogenic module and down conversion module|IRAM|Demons|Public|31.12.2019|29.1.2021 |{{ :jra:730562_radionet-d5.3_210129.pdf |D5.3}} |
|D5.2|Low noise, cryogenic 35 nm mHEMT MMIC amplifiers|Fraunhofer|Demons|Confidential|31.12.2019|4.11.2020 ||not public |
|D5.1|SIS junction mixer operating around 1 THz|UOXF|RE|Public|30.6.2019|3.12.2019 |{{:jra:730562_radionet-d5.1_191203.pdf|D5.1}} |