The procurement, evaluation, screening and lot acceptance of RF devices in leadless SMD packages to be used in spacecraft applications show unexpected difficulties whenever degolding or retinning processes are required. This is associated to the induced lack of coplanarity in... Continue reading
A compact balanced-to-balanced diplexer composed of two balanced bandpass filters is proposed in this letter. The balanced filters are implemented using compact edge-coupled square split-ring resonators. The design methodology is based on the standard coupled-resonators filter... Continue reading
New space missions include more extreme requirements of storage and operational temperatures and vacuum conditions exceeding standard -55ºC / +125ºC conditions Miniaturization implies increase higher power dissipation and hence max junction and PCB temperatures. Continue reading
For decades, military/space electrical, electronic, and electromechanical (EEE) parts have proved to be suitable for use in military and space applications. [NASA's Office of Safety & Mission Assurance (OSMA) evaluates newly available and advanced electronic parts for programs... Continue reading
Traditionally ASICs (and FPGAs) used in space were manufactured using Rad-Hard technologies and designed with special libraries. AS CMOS Technologies became denser (beyond the 180 nm node) it was realized that it was no longer affordable to change the semiconductor technology... Continue reading
Passive liquid crystal (LC) devices are becoming an interesting alternative for the manufacturing of photonic devices in spatial applications. These devices feature a number of advantages in this environment, the lack of movable parts, and of exposed electronics being among the... Continue reading
Space radiation environment is an important failure causing factor in space vehicles. Traditional reliability prediction method did not include the space radiation environment reliability. It’s the time to set up a method of space radiation environment reliability prediction. Continue reading
1. Admissible methods for SEE testing were determined on accounts of their realization at Roscosmos Test Facilities. 2. The SEE Testing Aids (based on ions, proton and laser sources) were created and are currently in operation. 3. The Roscosmos Testing Aids provide tests for all... Continue reading
Many basic testers availables which offer the capability to carry out a test in a rather short delay (a few weeks) at a relatively low cost. Capability to develop on demand test setup for complex devices (μP High frequency devices, RF fixtures etc…) higher cost driven by the... Continue reading
Radiation sensitivity of GaAs components is not really well known, compare to other technologies. Traditional radiation harness policy consisted in a good derating in DC bias conditions to ensure operation inside a known or expected DC safe operating area (SOA). However... Continue reading
New failure modes not observed in Silicon appear while testing SiC MOSFET and Schottky diodes and under heavy ions radiation. Gate damage in transistors remains undetected even monitoring drain current and gate leakage of the transistor under high voltage biasing conditions. Continue reading
Goal of the study • Propose a DD test standard • Should be available by the end of the year after ESA and Components Technology Board (CTB)/Radiation Working group (RWG) comments • Goal of this presentation ⇒ Not a draft of the future guidelines, but: • Remind the physical... Continue reading