Algorithm for the realization of the broad range of values of wide relative bandwidth (RBW) bandpass filter is introduced. Algorithm is based on periodic ideal cells each with short-ended stub. Theory is developed for a symmetrical cell with proportional transmission lines, nonuniform or uniform, in term of characteristic impedance. The theory is applied for the uniform transmission lines. Simple equation of the ratio between characteristic impendence of the short-ended stub and the characteristic impendences of the main lines is given for the broad range of RBW. Realizable filters are for the very wide RBW up to over 1.5 (150%). Technology is chosen in microstrip with vias for the short ends. It is without coupling, without defected ground structure (DGS) and only with a single layer. The procedure is tested on the fabricated filters for very wide RBW of 1.5 (150%). Agreement between measurements and simulations is excellent.
TY - JOUR
AU - Nešić, Dušan
AU - Milošević, Tomislav
AU - Kolundžija, Branko
PY - 2022
UR - https://cer.ihtm.bg.ac.rs/handle/123456789/5416
AB - Algorithm for the realization of the broad range of values of wide relative bandwidth (RBW) bandpass filter is introduced. Algorithm is based on periodic ideal cells each with short-ended stub. Theory is developed for a symmetrical cell with proportional transmission lines, nonuniform or uniform, in term of characteristic impedance. The theory is applied for the uniform transmission lines. Simple equation of the ratio between characteristic impendence of the short-ended stub and the characteristic impendences of the main lines is given for the broad range of RBW. Realizable filters are for the very wide RBW up to over 1.5 (150%). Technology is chosen in microstrip with vias for the short ends. It is without coupling, without defected ground structure (DGS) and only with a single layer. The procedure is tested on the fabricated filters for very wide RBW of 1.5 (150%). Agreement between measurements and simulations is excellent.
PB - Berlin : Walter de Gruyter GmbH
T2 - Frequenz
T1 - Ultra wideband bandpass filters with specified relative bandwidth
VL - 76
IS - 1-2
SP - 9
EP - 16
DO - 10.1515/freq-2021-0034
ER -
@article{
author = "Nešić, Dušan and Milošević, Tomislav and Kolundžija, Branko",
year = "2022",
abstract = "Algorithm for the realization of the broad range of values of wide relative bandwidth (RBW) bandpass filter is introduced. Algorithm is based on periodic ideal cells each with short-ended stub. Theory is developed for a symmetrical cell with proportional transmission lines, nonuniform or uniform, in term of characteristic impedance. The theory is applied for the uniform transmission lines. Simple equation of the ratio between characteristic impendence of the short-ended stub and the characteristic impendences of the main lines is given for the broad range of RBW. Realizable filters are for the very wide RBW up to over 1.5 (150%). Technology is chosen in microstrip with vias for the short ends. It is without coupling, without defected ground structure (DGS) and only with a single layer. The procedure is tested on the fabricated filters for very wide RBW of 1.5 (150%). Agreement between measurements and simulations is excellent.",
publisher = "Berlin : Walter de Gruyter GmbH",
journal = "Frequenz",
title = "Ultra wideband bandpass filters with specified relative bandwidth",
volume = "76",
number = "1-2",
pages = "9-16",
doi = "10.1515/freq-2021-0034"
}
Nešić, D., Milošević, T.,& Kolundžija, B.. (2022). Ultra wideband bandpass filters with specified relative bandwidth. in Frequenz
Berlin : Walter de Gruyter GmbH., 76(1-2), 9-16.
https://doi.org/10.1515/freq-2021-0034
Nešić D, Milošević T, Kolundžija B. Ultra wideband bandpass filters with specified relative bandwidth. in Frequenz. 2022;76(1-2):9-16.
doi:10.1515/freq-2021-0034 .
