Digital-filter-based flat-group-delay RF analog circuits: application to Dolph-Chebyshev windows
The direct synthesis of a family of digital-filter-based RF analog circuits with transmission zeros (TZs) and constant-group-delay behavior is reported. The adopted RF circuit consists of a transversal filtering network composed of transmission-line segments that are connected through a multi-way po...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2023 |
| País: | España |
| Institución: | Universidad de Alcalá (UAH) |
| Repositorio: | e_Buah Biblioteca Digital Universidad de Alcalá |
| Idioma: | inglés |
| OAI Identifier: | oai:ebuah.uah.es:10017/65195 |
| Acceso en línea: | http://hdl.handle.net/10017/65195 https://dx.doi.org/10.1109/TCSII.2023.3344678 |
| Access Level: | acceso abierto |
| Palabra clave: | Absorptive filter Bandpass filter (BPF) Dolph-Chebyshev window Finite-impulse-response (FIR) digital filter Group delay Microstrip filter Microwave filter Reflectionless filter RF filter Transmission zero (TZ) Transversal filter Telecomunicaciones Telecommunication |
| Sumario: | The direct synthesis of a family of digital-filter-based RF analog circuits with transmission zeros (TZs) and constant-group-delay behavior is reported. The adopted RF circuit consists of a transversal filtering network composed of transmission-line segments that are connected through a multi-way power divider and combiner at its input and output terminals, respectively. The synthesis procedure starts by obtaining the coefficients of a finite-impulse-response (FIR) digital filter of interest and finalizes with the determination of the electrical parameters of the RF circuit. In particular, designs corresponding to Dolph-Chebyshev windows are addressed in this brief. For experimental-demonstration purposes, two 5-GHz proof-of-concept microstrip prototypes of a symmetrical-quasi-reflectionless bandpass filter (BPF) with Dolph-Chebyshev-type response and the in-series cascade connection of two replicas of it are designed, manufactured, and tested. |
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