Multiband Bandpass Filter (BPF) based on Folded Dual Crossed Open Stubs
Corresponding email: gunawan@eng.ui.ac.id
Published at : 27 Jan 2014
Volume : IJtech
Vol 5, No 1 (2014)
DOI : https://doi.org/10.14716/ijtech.v5i1.151
Wibisono, G., Firmansyah, T., Priambodo, P.S., Tamsir, A.S., Kurniawan, T.A., Fathoni, A.B., 2014. Multiband Bandpass Filter (BPF) based on Folded Dual Crossed Open Stubs. International Journal of Technology. Volume 5(1), pp. 32-39
| Gunawan Wibisono | Department of Electrical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI, Depok 16424, Indonesia |
| Teguh Firmansyah | Department of Electrical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI, Depok 16424, Indonesia |
| Purnomo S. Priambodo | Department of Electrical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI, Depok 16424, Indonesia |
| Agus S. Tamsir | Department of Electrical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI, Depok 16424, Indonesia |
| Taufiq A. Kurniawan | Department of Electrical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI, Depok 16424, Indonesia |
| Achmad B. Fathoni | Department of Electrical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI, Depok 16424, Indonesia |
A compact multiband bandpass filter (BPF) based on folded dual crossed open stubs (DCOS) is designed and analyzed. Two Crossed Open Stubs (COS) are used to generate concurrent six-band BPF, where the center frequency located at 0.95 GHz, 1.85 GHz, 2.65 GHz, 3.35 GHz, 4.375 GHz, and 5.25 GHz. The proposed BPF based on folded Dual Crossed Open Stubs (DCOS) is an expansion of tri-band BPF based on a single COS, where the second COS is used to generate second additional tri-band. To achieve miniaturization structure of proposed BPF, the DCOS is folded. The proposed BPF will be designed and analyzed by using Advanced System Design (ADS). The performances of multiband BPF which characterized by return loss, insertion loss, voltage standing wave ratio (VSWR), and group delay, are conducted by simulation, measurement and analysis. It is shown that the simulation and fabrication results of insertion loss, return loss, VSWR, and group delay of the proposed multiband BPF are satisfied to design requirements. However, the center frequencies of fabricated the proposed multiband BPF are shifted average to 5?30 MHz lead to simulated results. This is due to some errors in fabricated process including imperfect dimension of fabricated BPF, soldering between connector to substrate and cable losses.
Folded dual crossed open stubs, Multiband BPF
Chu, Q.-X., 2008. Advanced Triple-Band Band Pass Filter using Tri-Section SIR, Electronic Lett. Volume 44(4). http://dx.doi.org/10.1049/el:20083096
Chu, Q.-X., Chen, F.-C., Tu, Z.-H., Wang, H., 2009. A Novel Crossed Resonator and its Applications to Bandpass Filters, IEEE Trans. Microw. Theory Tech., Volume 57, pp. 1753–1759 http://dx.doi.org/10.1109/tmtt.2009.2022873
Hosein, H., 2005. Integrated Concurrent Multiband Radios and Multiple Antenna System. Ph.D. Dissertation. California Institute of Technology. California. September 2005
Ministry of Communication and Information Republic of Indonesia, 2009. Table of Indonesia Radio Spectrum Frequency. Ministry of Communication and Information Republic of Indonesia Decree No. 29/PER/M.KOMINFO/07/2009, 30 July 2009
Packiaraj, D., Ramesh, M., 2006. Design of a Tri-section Folded SIR Filter, IEEE Microw. Wireless Component. Lett.,Volume 16(5), pp. 317-319 http://dx.doi.org/10.1109/lmwc.2006.873459
Wenjie, F., Tan, D.M., Wenquan, C., 2010b. Compact Tri-band Bandpass Filter based on Short Stubs and Crossed Open Stubs, Int’l Conf on Advanced Technologies for Communications 2010. Ho Chi Minh City, Vietnam, 20-22 Oct 2010. pp. 213-216 http://dx.doi.org/10.1109/atc.2010.5672689
Wenjie, F., Wenquan, C., Quan, X., 2010a. Novel Tri-band Microstrip Bandpass Filter using Open Stub with Different Length, The 15th Int’l Symp on Antennas and Propagation 2010 (ISAP 2010), Macao, China. pp. 267-270
Xue, M.-L., Chu, Q.-X., 2009. Design of Triple-band Bandpass Filter using Tri-section Stepped-Impedance Resonators, in: Proc. Int. Conf. Microw. Milli. Tech., 2009, pp. 1261-1263 http://dx.doi.org/10.1109/icmmt.2007.381479
Zhu, H., Gao, L., 2011. Design of Quad-band Bandpass Filter using Open- and Short-stub-Ioaded Resonators, Cross Strait Quad-Regional Radio Science and Wireless Technology Conference, 26-30 July 2011 http://dx.doi.org/10.1109/csqrwc.2011.6037038