TY  - JOUR
AU  - Nešić, Dušan
AU  - Kolundzija, Branko M.
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2261
AB  - Design method for band-stop filters (BSFs) that suppress a requested number of spurious bandstops and reduce ripples in the passbands below similar to 1 dB is proposed. BSF is designed in a form of a cascade of cells, each consisting of steps of equal electrical length, where the number of steps is used to control the number of suppressed spurious bandstops. Analytical formulas are developed that enable initial design of BSF for a given central frequency, depth, and bandwidth of the stopband. Varying the minimum characteristic impedances of initial cells, through an optimization using circuit simulation, the ripples in passbands are reduced below similar to 1 dB. Using the proposed theory, three filters in microstrip technology, with suppression of 3, 5, and 7 spurious stopbands respectively, were designed, fabricated, and measured. Good agreement between simulated and measured results has been observed. The proposed design can be recommended for filters having broad stop bandwidths, between 40 and 100%.
PB  - Cambridge Univ Press, Cambridge
T2  - International Journal of Microwave and Wireless Technologies
T1  - Band-stop filter with suppression of requested number of spurious stopbands
VL  - 9
IS  - 5
SP  - 995
EP  - 1002
DO  - 10.1017/S1759078716001070
ER  - 

@article{
author = "Nešić, Dušan and Kolundzija, Branko M.",
year = "2017",
abstract = "Design method for band-stop filters (BSFs) that suppress a requested number of spurious bandstops and reduce ripples in the passbands below similar to 1 dB is proposed. BSF is designed in a form of a cascade of cells, each consisting of steps of equal electrical length, where the number of steps is used to control the number of suppressed spurious bandstops. Analytical formulas are developed that enable initial design of BSF for a given central frequency, depth, and bandwidth of the stopband. Varying the minimum characteristic impedances of initial cells, through an optimization using circuit simulation, the ripples in passbands are reduced below similar to 1 dB. Using the proposed theory, three filters in microstrip technology, with suppression of 3, 5, and 7 spurious stopbands respectively, were designed, fabricated, and measured. Good agreement between simulated and measured results has been observed. The proposed design can be recommended for filters having broad stop bandwidths, between 40 and 100%.",
publisher = "Cambridge Univ Press, Cambridge",
journal = "International Journal of Microwave and Wireless Technologies",
title = "Band-stop filter with suppression of requested number of spurious stopbands",
volume = "9",
number = "5",
pages = "995-1002",
doi = "10.1017/S1759078716001070"
}

Nešić, D.,& Kolundzija, B. M.. (2017). Band-stop filter with suppression of requested number of spurious stopbands. in International Journal of Microwave and Wireless Technologies
Cambridge Univ Press, Cambridge., 9(5), 995-1002.
https://doi.org/10.1017/S1759078716001070

Nešić D, Kolundzija BM. Band-stop filter with suppression of requested number of spurious stopbands. in International Journal of Microwave and Wireless Technologies. 2017;9(5):995-1002.
doi:10.1017/S1759078716001070 .

Nešić, Dušan, Kolundzija, Branko M., "Band-stop filter with suppression of requested number of spurious stopbands" in International Journal of Microwave and Wireless Technologies, 9, no. 5 (2017):995-1002,
https://doi.org/10.1017/S1759078716001070 . .

TY  - JOUR
AU  - Nešić, Dušan
AU  - Kolundzija, Branko M
AU  - Tosic, Dejan V
AU  - Jeremić, Dario S
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1765
AB  - Novel design of low-pass microwave filters based on cascading of identical unit cells is proposed. Dispersion relation is used to determine the cell parameters for a given relative stop-band width. For a filter consisting of two cells, each made of single-or two-section transmission lines, the design formulas and curves are presented. Based on them typical filters are designed, fabricated, and measured. The presented filters feature a deep stop band and a wide rejection band, which can be controlled within the proposed design procedure. The design procedure and the simulation results are verified experimentally by measurement of the fabricated structures containing two and three cells.
PB  - Cambridge Univ Press, Cambridge
T2  - International Journal of Microwave and Wireless Technologies
T1  - Low-pass filter with deep and wide stop band and controllable rejection bandwidth
VL  - 7
IS  - 2
SP  - 141
EP  - 149
DO  - 10.1017/S1759078714000555
ER  - 

@article{
author = "Nešić, Dušan and Kolundzija, Branko M and Tosic, Dejan V and Jeremić, Dario S",
year = "2015",
abstract = "Novel design of low-pass microwave filters based on cascading of identical unit cells is proposed. Dispersion relation is used to determine the cell parameters for a given relative stop-band width. For a filter consisting of two cells, each made of single-or two-section transmission lines, the design formulas and curves are presented. Based on them typical filters are designed, fabricated, and measured. The presented filters feature a deep stop band and a wide rejection band, which can be controlled within the proposed design procedure. The design procedure and the simulation results are verified experimentally by measurement of the fabricated structures containing two and three cells.",
publisher = "Cambridge Univ Press, Cambridge",
journal = "International Journal of Microwave and Wireless Technologies",
title = "Low-pass filter with deep and wide stop band and controllable rejection bandwidth",
volume = "7",
number = "2",
pages = "141-149",
doi = "10.1017/S1759078714000555"
}

Nešić, D., Kolundzija, B. M., Tosic, D. V.,& Jeremić, D. S.. (2015). Low-pass filter with deep and wide stop band and controllable rejection bandwidth. in International Journal of Microwave and Wireless Technologies
Cambridge Univ Press, Cambridge., 7(2), 141-149.
https://doi.org/10.1017/S1759078714000555

Nešić D, Kolundzija BM, Tosic DV, Jeremić DS. Low-pass filter with deep and wide stop band and controllable rejection bandwidth. in International Journal of Microwave and Wireless Technologies. 2015;7(2):141-149.
doi:10.1017/S1759078714000555 .

Nešić, Dušan, Kolundzija, Branko M, Tosic, Dejan V, Jeremić, Dario S, "Low-pass filter with deep and wide stop band and controllable rejection bandwidth" in International Journal of Microwave and Wireless Technologies, 7, no. 2 (2015):141-149,
https://doi.org/10.1017/S1759078714000555 . .

TY  - CONF
AU  - Nešić, Dušan
AU  - Kolundzija, Branko M.
PY  - 2009
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/524
AB  - Analyse of one type of resonant cell is proposed. One to three cells are combined into a low pass filter. The filter design curves for various substrates and cut off frequencies are presented.
C3  - 9th International Conference on Telecommunications in Modern Satellite, Cable, and Broadcasting Serv
T1  - Analyse of One Type of Resonant Cell
SP  - 154
DO  - 10.1109/TELSKS.2009.5339488
ER  - 

@conference{
author = "Nešić, Dušan and Kolundzija, Branko M.",
year = "2009",
abstract = "Analyse of one type of resonant cell is proposed. One to three cells are combined into a low pass filter. The filter design curves for various substrates and cut off frequencies are presented.",
journal = "9th International Conference on Telecommunications in Modern Satellite, Cable, and Broadcasting Serv",
title = "Analyse of One Type of Resonant Cell",
pages = "154",
doi = "10.1109/TELSKS.2009.5339488"
}

Nešić, D.,& Kolundzija, B. M.. (2009). Analyse of One Type of Resonant Cell. in 9th International Conference on Telecommunications in Modern Satellite, Cable, and Broadcasting Serv, 154.
https://doi.org/10.1109/TELSKS.2009.5339488

Nešić D, Kolundzija BM. Analyse of One Type of Resonant Cell. in 9th International Conference on Telecommunications in Modern Satellite, Cable, and Broadcasting Serv. 2009;:154.
doi:10.1109/TELSKS.2009.5339488 .

Nešić, Dušan, Kolundzija, Branko M., "Analyse of One Type of Resonant Cell" in 9th International Conference on Telecommunications in Modern Satellite, Cable, and Broadcasting Serv (2009):154,
https://doi.org/10.1109/TELSKS.2009.5339488 . .

TY  - CONF
AU  - Nešić, Dušan
AU  - Kolundzija, Branko M.
PY  - 2009
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/525
AB  - In this paper, a new structure with only one (first order) bandstop is reported. A simple trapezoid shape of the microstrip line is introduced instead of the more complicated pattern. It obtains simple simulation, optimization and fabrication.
C3  - 9th International Conference on Telecommunications in Modern Satellite, Cable, and Broadcasting Serv
T1  - New Modified Microstrip Bandstop Filter with Only One (First Order) Bandstop
SP  - 158
EP  - 159
DO  - 10.1109/TELSKS.2009.5339485
ER  - 

@conference{
author = "Nešić, Dušan and Kolundzija, Branko M.",
year = "2009",
abstract = "In this paper, a new structure with only one (first order) bandstop is reported. A simple trapezoid shape of the microstrip line is introduced instead of the more complicated pattern. It obtains simple simulation, optimization and fabrication.",
journal = "9th International Conference on Telecommunications in Modern Satellite, Cable, and Broadcasting Serv",
title = "New Modified Microstrip Bandstop Filter with Only One (First Order) Bandstop",
pages = "158-159",
doi = "10.1109/TELSKS.2009.5339485"
}

Nešić, D.,& Kolundzija, B. M.. (2009). New Modified Microstrip Bandstop Filter with Only One (First Order) Bandstop. in 9th International Conference on Telecommunications in Modern Satellite, Cable, and Broadcasting Serv, 158-159.
https://doi.org/10.1109/TELSKS.2009.5339485

Nešić D, Kolundzija BM. New Modified Microstrip Bandstop Filter with Only One (First Order) Bandstop. in 9th International Conference on Telecommunications in Modern Satellite, Cable, and Broadcasting Serv. 2009;:158-159.
doi:10.1109/TELSKS.2009.5339485 .

Nešić, Dušan, Kolundzija, Branko M., "New Modified Microstrip Bandstop Filter with Only One (First Order) Bandstop" in 9th International Conference on Telecommunications in Modern Satellite, Cable, and Broadcasting Serv (2009):158-159,
https://doi.org/10.1109/TELSKS.2009.5339485 . .