2 Channels CMUX, 8 poles, including Input and Output Isolators and Coupler.
Mechanical housing optimisation:
Dimensions of the tuning screws optimized to reduce the distance between two channel Filters.
RF design : trade-off performed to implement a manifold instead of Isolators and Coupler.
Mechanical design ensured by flexible brackets on front face and rigid structure at CMUX output. Thermo-mechanical decoupling between Input and Output of each CMUX
Acceleration on components : test performed on Isolator sample
According to the trade-off results, the preliminary design is confirmed as the best compromise between mass, footprint, assembling constraints, and input/output access.
A Mechanical structural Breadboard of the Stacked CMUX, representative in mass and inertias, has been developed in order to measure the dynamic responses through a series of vibrations tests, and to verify and to readjust the damping factor inside the numerical mechanical model.
The mechanical design has been optimized considering several aspects :
- Mass (less than 300 gr. per Channel)
- Modal response
- Random Stresses
- Random accelerations on components :
- Thermo-Mechanical stresses
- Thermo-Mechanical CTE
Footprint saving : 78%
Mass saving : 3 %
Qualification tests sequence:
- Initial Performance Test
- Vibration test
- Post Vibration Test
- Shock Test
- Post Shock Test
- Thermal Vacuum Test –20°C/+70°C
- Insertion Loss Monitoring
- EMC tests
- Final Performance Test
- Final ICD control
EQM stacked CMUX has successfully passed the following qualifications tests.