A Reconfigurable Low-Pass Filter Based on Polyurethane Substrate Inspired by the Origami Structure.

Area of Science:

• Electrical Engineering
• Materials Science
• Mechanical Engineering

Background:

• Reconfigurable radio frequency (RF) devices are crucial for modern wireless communication systems.
• Traditional designs often face limitations in tunability and miniaturization.
• Origami principles offer a unique approach to mechanical reconfiguration.

Purpose of the Study:

• To propose an innovative design method for reconfigurable microstrip RF devices.
• To leverage origami structures for achieving mechanical reconfigurability.
• To demonstrate the effectiveness of this novel design approach through theoretical and experimental validation.

Main Methods:

• Development of a reconfigurable microstrip RF device design inspired by origami folding.
• Fabrication and experimental testing of a reconfigurable low-pass filter prototype.
• Analysis of frequency tuning range, return loss, and insertion loss performance.

Main Results:

• The origami-inspired reconfigurable low-pass filter achieved a frequency tuning range of 524-568 MHz with a maximum folding height of 3 mm.
• Experimental results show return loss below -15.0 dB and insertion loss below 2.5 dB up to 500 MHz.
• The proposed design method proved effective through comprehensive theoretical and experimental validation.

Conclusions:

• The origami-based design method is a groundbreaking approach for reconfigurable RF devices.
• This technique offers significant potential for developing advanced, tunable RF components.
• The study validates the efficacy of integrating origami principles into RF device engineering.