In Print: ‘Tunable Evanescent-Mode Filters: Principles, Implementation, and Applications’

Publication title

Tunable Evanescent-Mode Filters: Principles, Implementation, and Applications

Purdue author

Dimitrios Peroulis

Authors

Dimitrios Peroulis

Mohammad Abu Khater

Publisher

Wiley-IEEE Press

Publication date

September 2025

About the book (from the publisher)

Covering all recent advancements in the field, “Tunable Evanescent-Mode Filters: Principles, Implementation, and Applications” discusses fundamentals and applications in tunable evanescent-mode filters with concepts supported by hardware demonstrations to help the reader design experiments, a variety of detailed illustrations to aid in reader comprehension and worked-out examples to help connect theory to practice.

The book is divided into three parts. The first part introduces associated physics, providing background information on topics such as filter anatomy, coupling matrix and routing diagrams, evanescent-mode resonators, and more. The second part covers implementation, describing topics like printed circuit boards, silicon microfabrication and injection molding. The last part covers applications and discusses a broad range of topics including absorptive bandstop filters, bandwidth and passband control, high-order and fractional-order evanescent-mode filters, advanced evanescent-mode filter structures, and phase-locked loop and balanced-balanced tunable filtering.

Written by two highly qualified academics with significant research experience in the field, the book also explores topics such as:

• Filter examples, including Chebyshev bandpass filters and Butterworth bandstop filters, and coupling techniques, including external and inter-resonator coupling
• The constant bandwidth coupling concept, covering BW variation versus T-line length and tuning range, as well as phase variation
• Bandpass-to-bandstop reconfigurable filters, covering the switching coupling structure
• Single-ended and balanced diplexers, covering the dual-mode diplexing concept and its architecture and resonant frequency misalignment
• Monitoring and control of silicone-based filters, covering spiral inductors and circuit optimization

“Tunable Evanescent-Mode Filters” is a one-of-a-kind and completely up-to-date reference on the subject for both beginners in tunable RF systems looking to learn the fundamentals as well as advanced researchers who are interested in the most effective techniques and latest developments in the field.

About the Purdue author

Dimitrios Peroulis is the Reilly Professor of Electrical and Computer Engineering and senior vice president for partnerships and online. In this role, he leads Purdue’s online programs and the offices of Industry Partnerships, Global Partnerships, and Engagement. From 2019-23 he served as the Michael and Katherine Birck Head of Electrical and Computer Engineering and special advisor to the dean of engineering on online learning. His research interests include reconfigurable systems, plasma RF electronics and RF-assisted lyophilization. Peroulis is an IEEE fellow and has received several scholarly and teaching awards, including the National Science Foundation CAREER Award and Purdue’s Charles B. Murphy Outstanding Undergraduate Teaching Award.

About the In Print series

To celebrate our faculty’s excellence in scholarship, Purdue Today’s weekly book series highlights faculty expertise across diverse subjects and disciplines. Find out more about the Purdue University Books Initiative and how to suggest a bo