NEWS & EVENTS

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Note: Due to COVID-19, there has been a nine-month delay on the project.

UPCOMING events

2022
JAN

INDUSTRIALIZATION OF SECTOR

Industrialization of sector begins, including installation of machines, test benches, etc.

2022JAN

EPPL QUALIFICATION OF SWITCH 

EPPL qualification of switch begins.

2022JAN

PERIODIC REVIEW 

Periodic review with the European commission.

2022
FEB

REDUNDANCY RING QUALIFICATION

Qualification of redundancy ring begins.

2022
apr

eumw in london

The consortium will attend workshop for EUMW in London.

2022
JUN

publication in csem magazine

Paper will be published in the CSEM annual technical reports magazine.

2022
SEP

END OF SELECTOR PROJECT

The SELECTOR project comes to an end.

PAST events

2019
jaN

Kick-off meeting

Meeting with the entire consortium to discuss task planning for the next three years of the project.

2019

mar

MEMR reliability assessment and qualification

  • MEMR reliability assessment methodology and test plan definition:

    • Phase A: Mono-parameter stress tests​

    • Phase B: Accumulative (multi-paramater) stress tests

  • Report on architecture trade-off analysis. MEMR Component and Redundancy Ring Slice Architecture trade-offs for VHTS application.

2019
apr

consolidation of redundancy ring slice and memr specs

  • Redundancy Ring Specifications: System level requirements in line with VHTS (Very High Throughput Satellite) enable product to achieve redundancy ring detailed specifications. A top-down approach is used to fine tune demonstrator redundancy ring slice specifications and MEMR basic performance requirements
     

  • MEMR component specifications (according to the previously achieved Redundancy Ring Slice Specification) : The MEMR component specifications are used as a first step for the space upgraded design of the existing MEMR. The MEMR component detailed specifications are defined according to the previously achieved Redundancy Ring Specification, focusing on reliability and space environment compliance. As another constraint, these space specifications have to match the current ground product design as much as possible to remain compatible with Radiall’s existing production equipment.

2019
jUN

ADVISORY BOARD IS FORMED

The board is composed of Rhode Schwarz, CNES and ESA

2019
jUL

INNOVATIVE CHARACTERISTICS OF MEMR DEFINED

The group defines the following objectives and presents a preliminary design of the switch:

  • Frequency validation up to 32 GHz, with an exploration up to 44 GHz for other applications: Microwave adaptation of the transition between the product and the circuit (strong impedance variations in this area).

  • Material list and outgassing: Have knowledge of compatible materials and control of outgassing process for spare parts before assembly.

  • Gain in mass compared to existing products: The gain in mass will be significant, due the technology used. However, the reduction of RF leakage using conductive plates, covers or seals will generate additional weight that must be controlled.

  • Improve cross-talk: Shielding circuits and tracks (numerical simulation approach) and external shielding by encapsulating in cavities (plates, covers, etc.).

  • Suitable for harsh environments (vibration and shocks):

    • Model tests, resistance of the welding between product and circuits, possible addition of a mechanical fixation

    • Resistance of internal parts to shocks higher than 4,000 g

    • Balance moving parts and optimize their fixings and guides

  • Temperature resistance, compatibility with SMT processes:

    • Soldering of components in a reflow oven, with heating to 260 °C: no outgassing in the product

    • Resistance of plastic parts and bending blades under tension (optimization of the stresses applied to parts)

    • Influence of residual deformations on actuator pick-up voltage, preservation of the low resistance of RF contacts, and microwave characteristics

  • Implementation of the switch in space redundancy ring: temperature resistance, compatibility with SMT processes

2019
NOV

FIRST INTERMEDIATE PROTOTYPE RELEASED

Radiall submits an ESCC specification proposal of the MEMR for space applications, and works with ESA passive components experts to finalize the document. 

2019
dec

First periodic review with the European commission

2020
FeB

COVID 19

The global pandemic impacts the Selector consortium, resulting in a 4-month delay of product release.

2020
APR

MEMR Design validated

The Space MEMR design is validated, working up to 32 GHz. 

2020
JUNE

MID-TERM REVIEW WITH EUROPEAN COMMISSION

2020

JULY

FINAL VERSION OF SELECTOR SWITCH released

2021
may

SIMULATION OF RF DESIGN MODICATION

Design modification to increase frequency range up to 44 GHz and Power Handling evaluation.

2021
sep

DETAILED DESIGN OF KA BAND COMPACT REDUNDANCY RING

2021
OCT

MEMR MONO-PARAMETER RELIABILITY STRESS TESTS FINISHED

2021
sep-nov

MANUFACTURING OF SWITCHES FOR QUALIFICATION

2021
dec

MEMR ACCUMULATIVE RELIABILITY STRESS TESTS FINISHED