Reconfigurable Memristive Quasi-Lumped Dual-Band Bandpass Filters

Area of Science:

• Electrical Engineering
• Materials Science
• Microwave Engineering

Background:

• Bandpass filters are crucial components in modern electronic systems.
• Existing filters often lack tunability or reconfigurability.
• Memristors offer unique properties for electronic control applications.

Purpose of the Study:

• To design and validate a novel dual-band bandpass filter with switchable passbands.
• To demonstrate the use of memristors for filter reconfigurability.
• To achieve miniaturization through multilayer technology and quasi-lumped elements.

Main Methods:

• Utilized memristors as control elements for connecting filter components to ground.
• Employed multilayer technology with quasi-lumped elements for size reduction.
• Performed circuit-level simulations followed by 3D electromagnetic (EM) simulations for validation.

Main Results:

• Successfully designed a very small dual-band bandpass filter.
• Demonstrated independent control over two passbands (3.5 GHz and 5.8 GHz) using memristor states.
• Achieved a filter footprint of 0.10 λ_g × 0.12 λ_g.

Conclusions:

• The proposed memristor-controlled dual-band filter is feasible and highly miniaturized.
• The design allows for independent and negligible-impact tuning of individual passbands.
• This technology enables highly reconfigurable and compact RF filter solutions.