Monolithic Compact Low-Frequency Bandpass Filter Based on Intertwined Helical Resonators

Research output: Chapter in Book/Report/Conference proceedingsChapterpeer-review

Abstract

This paper reports on a new type of a compact 3D bandpass filter using intertwined helical resonators. The filter design is based on coupled-resonators theory and the manufacturing employs stereolithograpy apparatus (SLA) 3D printing to obtain a monolithic 3D screwless structure with low weight and low loss. To validate the results obtained through simulations, a prototype has been manufactured and measured, showing the following RF characteristics: frequency of operation of 1.08 GHz, fractional bandwidth of 15.5 %, minimum in-band insertion loss of 0.08 dB and Qeff equal to 1805.

Original languageEnglish
Title of host publication2023 IEEE/MTT-S International Microwave Symposium, IMS 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages748-751
Number of pages4
ISBN (Electronic)9798350347647
DOIs
Publication statusPublished - 2023
Event2023 IEEE/MTT-S International Microwave Symposium, IMS 2023 - San Diego, United States
Duration: 11 Jun 202316 Jun 2023

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
Volume2023-June
ISSN (Print)0149-645X

Conference

Conference2023 IEEE/MTT-S International Microwave Symposium, IMS 2023
Country/TerritoryUnited States
CitySan Diego
Period11/06/2316/06/23

Keywords

  • Additive manufacturing (AM)
  • bandpass filters (BPFs)
  • helical cavity filters
  • helical resonators
  • stereolithography

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