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To achieve this performance, the LT3046 employs a
precision current reference followed by a high-
performance voltage buffer. As shown in Figure 1, it uses a
single output capacitor, which improves noise and PSRR
over typical low-dropout (LDO) regulators. Multiple
regulators can be used in parallel to reduce noise further,
increase output current, and spread heat on the PCB.
Future Trends in EMI Management
As electronic systems evolve, new trends are emerging
to address increasingly complex EMI challenges. AI and
machine learning (ML), in particular, are revolutionizing
EMI management by analyzing design parameters and
environmental conditions to predict potential issues. High-
fidelity simulations using finite element analysis (FEA) and
computational electromagnetics (CEM) are also major trends,
adding to the ability to model complex systems accurately.
Dynamic approaches to EMI mitigation are gaining traction. Advanced
active cancellation techniques adapt to changing EMI environments,
and sensor-driven dynamic shielding systems adjust in real time to
variable conditions. These capabilities can be paired with digital twins,
facilitating real-time monitoring and simulation of EMI effects in
industrial IoT applications.
Meanwhile, novel materials are enhancing EMI shielding capabilities across
the board. Electromagnetic metamaterials offer unique wave manipulation
properties, while nanomaterials like carbon nanotubes and graphene
provide high-performance, lightweight shielding for flexible electronics.
Efforts to streamline EMI compliance are also underway. Global
harmonization of EMI standards aims to simplify certification
processes, while AI-driven compliance testing enhances efficiency and
accuracy in identifying non-compliance issues.
Conclusion
EMI is a critical challenge for modern power systems, but engineers have
a robust toolkit of mitigation techniques at their disposal. As electronic
systems continue to evolve and become more complex, so will the
EMI mitigation strategies. By staying abreast of these developments,
engineers can create more robust products that meet current demands
and are prepared for tomorrow's electromagnetic challenges.
Figure 1: A typical application for the Analog Devices LT3046 linear regulator.
(Source: Analog Devices)
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