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A tunable bandpass filter with constant absolute bandwidth using folded slotline uniform‐impedance resonators.
- Source :
-
International Journal of RF & Microwave Computer-Aided Engineering . May2022, Vol. 32 Issue 5, p1-7. 7p. - Publication Year :
- 2022
-
Abstract
- A simple tunable bandpass filter (BPF) with constant 3‐dB absolute bandwidth using folded slotline uniform impedance resonators (UIRs) is proposed. The tunable BPF consists of a pair of coupled folded slotline UIR, where the varactor diode elements are loaded to control its center frequency. Measured results show that a wide tuning range from 1.76 to 2.35 GHz with constant 3‐dB absolute bandwidth (ABW) of 310 ± 10 MHz is realized. Meanwhile, a pair of transmission zeros (TZs) are generated aside both sides of the passband due to the coupling between source and load, which improves the selectivity of the passband. [ABSTRACT FROM AUTHOR]
- Subjects :
- *BANDPASS filters
*RESONATORS
*BANDWIDTHS
*VARACTORS
*TRANSMISSION zeros
Subjects
Details
- Language :
- English
- ISSN :
- 10964290
- Volume :
- 32
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- International Journal of RF & Microwave Computer-Aided Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 156083897
- Full Text :
- https://doi.org/10.1002/mmce.23078