Academic Journal
Tunable Bandpass Filters With Co-Integrated Isolator and Switching-Off Functionality
| العنوان: | Tunable Bandpass Filters With Co-Integrated Isolator and Switching-Off Functionality |
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| المؤلفون: | Kexin Li, Dimitra Psychogiou |
| المصدر: | IEEE Journal of Microwaves, Vol 5, Iss 1, Pp 190-206 (2025) |
| بيانات النشر: | IEEE, 2025. |
| سنة النشر: | 2025 |
| المجموعة: | LCC:Telecommunication LCC:Electric apparatus and materials. Electric circuits. Electric networks |
| مصطلحات موضوعية: | Bandpass filter (BPF), isolator, RF switch, tunable filter, unilateral filter, Telecommunication, TK5101-6720, Electric apparatus and materials. Electric circuits. Electric networks, TK452-454.4 |
| الوصف: | This paper reports on a new type of multi-functional bandpass filtering (BPF) architecture with center frequency tunability, switching-off, and isolator functionality. The proposed filter, isolator, and switch (FIS) combines frequency-tunable passive resonators with unilateral frequency-selective stages (UFSs) to achieve tunable, fully-directional, quasi-elliptic transfer functions. The UFS, consists of a transistor-based path and a tunable feedback network, enabling frequency-selective transmission in the forward direction, RF signal cancellation in the reverse direction, and reconfigurability in terms of center frequency and intrinsic switching-off. It is demonstrated that by cascading UFSs and tunable resonators, highly selective frequency-tunable FISs can be developed. The proposed FIS also offers a reconfigurable switch-off mode capability with high isolation that is obtained by adjusting transmission zeros and reconfiguring the UFSs. In this paper, two types of UFSs are analyzed using circuit schematic simulations and coupling routing diagram (CRD)-based synthesis. Scalability to high-order transfer functions is also demonstrated by CRD-synthesized examples, design examples and manufactured prototypes. For experimental validation, two tunable UFSs and four tunable FISs were manufactured and measured at the L band. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2692-8388 |
| Relation: | https://ieeexplore.ieee.org/document/10811760/; https://doaj.org/toc/2692-8388 |
| DOI: | 10.1109/JMW.2024.3512375 |
| URL الوصول: | https://doaj.org/article/adde722150bb4e94aec368360cd66700 |
| رقم الانضمام: | edsdoj.722150bb4e94aec368360cd66700 |
| قاعدة البيانات: | Directory of Open Access Journals |
| تدمد: | 26928388 |
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| DOI: | 10.1109/JMW.2024.3512375 |