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High-Selectivity Narrow- and Wide-band Input-Reflectionless Bandpass Filters with Intercoupled Dual-Behavior Resonators.
- Source :
-
IEEE Transactions on Plasma Science . Feb2020, Vol. 48 Issue 2, p446-454. 9p. - Publication Year :
- 2020
-
Abstract
- Two novel classes of high-selectivity input-reflectionless bandpass filters (BPFs) with narrow- and wide-band characteristics and out-of-band transmission zeros (TZs) are presented. These input-reflectionless BPFs, which are based on a complementary-duplexer approach, respectively, exploit intercoupled short-/open-ended dual- behavior resonators (DBRs) and coupled line/T-stub two-path transversal filtering stages in their main BPF channel. Their absorptive auxiliary channel is made up of a resistively terminated dual-band bipath transversal filtering cell, whose dual passbands are allocated in the stopband regions of the main BPF channel. Thus, the RF-input-signal energy that is not transmitted by the main channel in its attenuated bands is dissipated by the loading resistor of the auxiliary one. Hence, input-reflectionless properties are attained in the whole BPF architecture. The theoretical design principles of the conceived narrow- and wideband input-reflectionless BPF approaches are described. Furthermore, their experimental usefulness is verified through the development and characterization of two microstrip sharp-rejection BPF prototypes centered at 2 GHz. [ABSTRACT FROM AUTHOR]
- Subjects :
- *BANDPASS filters
*TRANSMISSION zeros
*RESONATORS
Subjects
Details
- Language :
- English
- ISSN :
- 00933813
- Volume :
- 48
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Plasma Science
- Publication Type :
- Academic Journal
- Accession number :
- 143313952
- Full Text :
- https://doi.org/10.1109/TPS.2020.2968481