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Performance Improvement of Parallel Coupled Band-pass Filter using Defected Microstrip Structure
| International Conference on Communication, Circuits and Systems 2012 |
| Foundation of Computer Science USA |
| IC3S - Number 2 |
| June 2013 |
| Authors: Tamasi Moyra, Sukanta Roy, Susanta Kumar Parui, Santanu Das |
| 99f113f3-d47d-4125-9753-174afc16822b |
Tamasi Moyra, Sukanta Roy, Susanta Kumar Parui, Santanu Das . Performance Improvement of Parallel Coupled Band-pass Filter using Defected Microstrip Structure. International Conference on Communication, Circuits and Systems 2012. IC3S, 2 (June 2013), 12-15.
Abstract
Resent developments in wireless communication systems demand good Band pass filter (BPF) to select the required signal from the adjacent unwanted signals. In this paper one parallel coupled 3rd order Band pass filter with centre frequency 5GHz and 15% Fractional Bandwidth (FBW) has been designed with the conventional Microstrip transmission line. This designed BPF has been simulated with the help of MoM based IE3D EM simulation software and the corresponding equivalent lumped L-C circuit model has been extracted. The simulated results provide a good agreement with the circuit model results. Here it is found that the proposed parallel coupled BPF provides unwanted harmonics at 9. 6GHz and 13. 5GHz. Therefore, in this paper attention also has been given towards the suppression of those harmonics with the help of Defected Microstrip Structures (DMS) in addition with the proposed parallel coupled microstrip BPF. Finally, the proposed BPF filter has been fabricated and measured with an Agilent make vector network analyzer of model N5230A and good agreement between simulated and measurement results have been obtained.
References
- Jia-Shen G. Hong and M. J Lancaster, "Microwave Filters For RF/Microwave Applications", John Willey & Sons, 1st Edition 2001.
- Vincent F. Fisco "Microwave Circuit, Analysis and Computer-Aided Design", Print Hall International Ltd, 2nd Edition, 1987.
- Tamasi Moyra, Susanta Kumar Parui and Santanu Das " Design of Bandpass Filter Using Defected Ground Structure (DGS) and Defected Microstrip Structure (DMS)" Proceedings of International Conference ICMARS-2010, 14-17 Dec. Jodhpur. Organized by International Centre for Radio Science ICRS.
- J. T. Kuo and W. Hsu, "Parallel coupled microstrip filters with suppression of harmonic response," IEEE Microw. Wireless Compon. Lett. , vol. 12, no. 10, pp. 383–385, Oct. 2002.
- Tamasi Moyra, Susanta Kumar Parui and Santanu Das "Design of Lowpass Filter using Defected Microstrip Structure (DMS)" IEEE CASCOM 2010 , 27 Nov. 2010. JU, Kolkata
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