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Related Concept Videos

Passive Filters01:27

Passive Filters

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Passive filters are utilized to shape the frequency spectrum of signals across a diverse array of applications. These filters, using only passive elements like resistors (R), inductors (L), and capacitors (C), are capable of selectively allowing or blocking certain frequency ranges without the need for external power sources.
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Inkjet-printed Polyvinyl Alcohol Multilayers
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Fully inkjet-printed microwave passive electronics.

Garret McKerricher1, Mohammad Vaseem1, Atif Shamim1

  • 1King Abdullah University of Science and Technology (KAUST), IMPACT Lab, Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division, Thuwal 23955-6900, Saudi Arabia.

Microsystems & Nanoengineering
|May 7, 2019
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Summary
This summary is machine-generated.

This study introduces a novel inkjet printing method for fabricating 3D radio frequency electronics using a low-cost silver ink. This process achieves high conductivity and enables the creation of high-performance inductors, capacitors, and filters.

Keywords:
capacitorfilterinductorinkjet printingmulti-jetradio frequencysilver

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Area of Science:

  • Additive Manufacturing
  • Materials Science
  • Electrical Engineering

Background:

  • Inkjet printing offers potential for on-demand fabrication of 3D radio frequency (RF) electronics.
  • Existing metallization techniques for printed RF components are complex and lack versatility.

Purpose of the Study:

  • To develop a simplified and versatile inkjet printing process for 3D RF electronics.
  • To achieve high conductivity and performance in printed RF components using novel materials and curing methods.

Main Methods:

  • Utilized a novel silver ink cured with a low-cost infrared lamp at 80°C.
  • Employed a multilayer inkjet printing process combining the silver ink with a commercial UV-cured acrylic dielectric.
  • Applied a smoothing technique to achieve surface roughness below 500 nm for both conductive and dielectric layers.

Main Results:

  • Achieved a high silver ink conductivity of 1×10⁷ S m⁻¹.
  • Demonstrated state-of-the-art quality factors for printed radio frequency inductors (8) and capacitors (20).
  • Fabricated a lumped element radio frequency filter with low insertion loss (0.8 dB at 1 GHz).

Conclusions:

  • The developed inkjet printing process is suitable for fabricating high-performance 3D radio frequency electronics.
  • This novel method offers a versatile and cost-effective alternative to traditional metallization techniques.
  • The printed components show excellent performance, validating the process for sensitive RF applications.