| Autor: |
Wei Yang, Mohammad Abu Khater, Eric J. Naglich, Dimitra Psychogiou, Dimitrios Peroulis |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
IEEE Access, Vol 8, Pp 114854-114863 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2169-3536 |
| DOI: |
10.1109/ACCESS.2020.3003948 |
| Popis: |
This paper presents the first frequency-selective limiter (FSL) with both power-activation and user-prompted override that also features a reconfigurable threshold power and frequency tuning with closed-loop feedback. The FSL is based on a tunable absorptive bandstop-to-all-pass filter with integrated electronics. Three distinct modes are available: user-defined bandstop, power-activated bandstop, and all-pass mode. In the user-defined bandstop mode, the FSL presents a measured notch of 45-55 dB at an user-defined center frequency within 1.5-2 GHz tuning range. The out-of-band insertion loss is less 0.8 dB. In the power-activated mode, the FSL switches intrinsically between its bandstop and all-pass responses based on the incident power level at any user-defined power threshold and frequency within the 1.5-2 GHz range. In the all-pass mode, the measured loss is less than 3.1 dB at the user-defined center frequency and less 0.8 dB elsewhere. The measurements are conducted including the two SMA connectors and the associated connector-to-microstrip transitions. The threshold power level is tunable in the -45 to +8 dBm range. The filter is designed and fabricated with high-quality substrate-integrated cavities with an extracted resonator unloaded quality factor (Qu) of 300. The unique features and the measured RF performance of the presented FSL are state-of-the-art results. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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