@inbook{34ec426e0b2c41c5956199f33542b60f,
title = "High-Q Monolithically-Integrated Bandpass Filters Using Quarter-Spherical Resonators",
abstract = "A new class of monolithically-integrated and high-quality factor (Q) 3D bandpass filters (BPF) is reported. The proposed filter concept is based on compact high-Q quarter-spherical resonators that are significantly smaller than conventional spherical resonators. A mono-block connectorized integration concept is demonstrated using stereolithography apparatus (SLA) 3D printing. The operating principles of the quarter-spherical BPF concept are demonstrated through detailed eigen mode and full-wave electromagnetic simulations. For proof-of-concept demonstration purposes a second-order BPF prototype was manufactured and tested. It exhibited the following transfer function characteristics. Center frequency: 12.28 GHz, minimum in-band insertion loss 0.3 dB, effective quality factor (Qeff) of 1800 and fractional bandwidth of 2.8\%",
keywords = "3D filter, 3D printing, bandpass filter, high-Q filter, high-Q resonator, stereolithography apparatus (SLA)",
author = "Dimitra Psychogiou and Kunchen Zhao",
note = "Publisher Copyright: {\textcopyright} 2023 IEEE.; 2023 IEEE/MTT-S International Microwave Symposium, IMS 2023 ; Conference date: 11-06-2023 Through 16-06-2023",
year = "2023",
doi = "10.1109/IMS37964.2023.10187961",
language = "English",
series = "IEEE MTT-S International Microwave Symposium Digest",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "255--258",
booktitle = "2023 IEEE/MTT-S International Microwave Symposium, IMS 2023",
address = "United States",
}
