1. MIME – Update Report Olivier LE DUFF – 10 May 2012
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
Laboratoire de Physique et Chimie de l'Environnement et de l’Espace
3A, avenue de la Recherche Scientifique
F Orléans cedex 02, France
MIME – Update Report
Olivier LE DUFF – 10 May 2012
MIME Team : Jean-Louis RAUCH – Jean-Gabriel TROTIGNON - Olivier LE DUFF 1

2. Outlines MIME – Principles Mechanics Specifications
Funding and Lab Support
Summary and Prospective 2

3. MIME principle – Main Option
LP-PWI & MIME Board
4 LP-PWI
MIME
synthesizer
control
E-Field and LP Bias Control
DACs
MIME Drivers
clock
synchronous
acquisition
DPU
Acquisition Lines 3

4. MIME principle – Second Option
LP-PWI & MIME Board
4 LP-PWI
(1 or 2 LP-PWI)
MIME
synthesizer
control
E-Field and LP Bias Control
DACs
MIME Drivers
clock
synchronous
acquisition
DPU
Acquisition Lines 4

5. Possible quadripole probe accommodations
4 Langmuir probes accommodation
2 Langmuir probes and RWI antennas accommodation 5

6. Mechanics (Warsaw meeting / Lennart Ahlen 2011-01-10)
Backplane with power distribution, analog and digital interfaces
Board size: 20x15cm
Connectors: Micro-D type
Distance between Boards: 20mm
DC/DC Converter
DPU
LP-PWI & MIME LF MF HF 6

7. MIME Design Proposal Proposal: Justifications Dedicated board or area.
Dedicated FPGA and VHDL code.
Delivery of software for onboard data treatment.
Justifications
Easiest development.
Better control of design process and tests.
Minimized risks.
Financial and technical support from CNES and LPC2E. 7

8. Specifications FPGA : ACTEL or XILINX ?
Synchronous emission/acquisition (absolute phase information).
Emission
Frequency bandwidth: few 100Hz to 3MHz.
Signal shape (Sin wave ,triangle, ramps…) TBD.
Sweep or emission occurrence: TBD.
Analog interfaces (number, level, impedance…) : TBD.
Level of design integration: TBD.
Tele-command and Synthesizer Control (calibration purpose): TBD.
Budgets : < 1W; 250g (based on AM²P-E / Bepicolombo experience). 8

9. Funding and Lab support
“Pre-phase A” funding secured by CNES.
MIME development funding by CNES : conditioned by AO selection.
LAB SUPPORT:
Electronic breadboard, EM and flight model.
Software development and delivery.
Man Power :
Before 2014: technical manager (O. LE DUFF).
From 2014: technical manager (O. LE DUFF) and development engineer(s) TBD. 9

10. Summary and Perspective
So far:
Sketch of RPWI architecture.
Sensors accommodation.
Definition of emission modes and types (needed for synthesizer specifications).
Define the MIME I/F.
Dedicated MIME/RPWI meeting? 10