Multi-tunable quasi-circulator with co-designed bandpass filter and switching-off functionality
| dc.contributor.author | Li, Kexin | en |
| dc.contributor.author | Psychogiou, Dimitra | en |
| dc.contributor.funder | Science Foundation Ireland | en |
| dc.date.accessioned | 2024-12-17T10:45:00Z | |
| dc.date.available | 2024-12-17T10:45:00Z | |
| dc.date.issued | 2024-10-31 | en |
| dc.description.abstract | This paper reports on the RF design and practical validation of a multi-tunable quasi-circulator with co-designed bandpass filtering and switching-off functionality (QCFS). The QCFS concept is based on two tunable unilateral frequency-selective stages (UFSs), which are integrated with a Wilkinson divider and microstrip resonators. The UFSs in combination with Wilkinson divider facilitates fully-directional signal transmission in each of the Tx/Rx paths of the QCFS. Microstrip resonators and resonant stages are added to facilitate highly-selective bandpass filtering (BPF) and create transmission zeros (TZs). By tuning their resonances, center frequency and bandwidth tunability can be achieved. An intrinsic-off function is also facilitated by moving the TZs at the center frequency of the passband. For experimental validation purposes, a QCFS was designed, manufactured, and measured at L band. In its direction of propagation, it exhibits a three-pole/two-TZ frequency-selective response with center frequency tuning between 1.4 to 1.8 GHz and insertion loss (IL) ranging from 1.6 to 4.3 dB, fractional bandwidth tuning from 7.5% to 11.3% with IL ranging from 2.5 to 4.3 dB, and RF switching with more than 30 dB isolation. In the reverse direction, it facilitates an isolation between 25-39 dB within the entire center frequency tuning range. | en |
| dc.description.status | Peer reviewed | en |
| dc.description.version | Accepted Version | en |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.citation | Li, K. and Psychogiou, D. (2024) 'Multi-tunable quasi-circulator with co-designed bandpass filter and switching-off functionality', 2024 54th European Microwave Conference (EuMC), Paris, France, 24-26 September 2024, pp. 108-111. https://doi.org/10.23919/EuMC61614.2024.10732424 | en |
| dc.identifier.doi | https://doi.org/10.23919/EuMC61614.2024.10732424 | en |
| dc.identifier.endpage | 111 | en |
| dc.identifier.isbn | 978-2-87487-077-4 | en |
| dc.identifier.isbn | 979-8-3503-8589-2 | en |
| dc.identifier.startpage | 108 | en |
| dc.identifier.uri | https://hdl.handle.net/10468/16726 | |
| dc.language.iso | en | en |
| dc.publisher | Institute of Electrical and Electronics Engineers (IEEE) | en |
| dc.relation.ispartof | 2024 54th European Microwave Conference (EuMC), Paris, France, 24-26 September 2024 | en |
| dc.relation.project | info:eu-repo/grantAgreement/SFI/SFI Research Professorship Programme/20/RP/8334/IE/Highly-Versatile RF Front-End Antenna Interfaces for Next Generation Communications/ | en |
| dc.rights | © 2024, IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. | en |
| dc.subject | Quasi-circulator | en |
| dc.subject | Directional filter | en |
| dc.subject | Non-reciprocal filter | en |
| dc.subject | Unilateral filter | en |
| dc.subject | RF co-design | en |
| dc.title | Multi-tunable quasi-circulator with co-designed bandpass filter and switching-off functionality | en |
| dc.type | Conference item | en |
