Design and Analysis of a Compact GSM/GPS Dual-Band Bandpass Filter Using a T-Shaped Resonator
This study presents an ultracompact dual-band bandpass filter with controllable transmission zeros based on quarter-wave dual-mode resonator for GSM (global system for mobile communications) and GPS (global positioning system) wireless applications. The filter is made up of two quarter-wave resonato...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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The Korean Institute of Electromagnetic Engineering and Science
2022-03-01
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| Series: | Journal of Electromagnetic Engineering and Science |
| Subjects: | |
| Online Access: | http://jees.kr/upload/pdf/jees-2022-2-r-70.pdf |
| _version_ | 1818271827232817152 |
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| author | Abdul Basit Muhammad Irfan Khattak Mauth Al-Hasan Jamel Nebhen Atif Jan |
| author_facet | Abdul Basit Muhammad Irfan Khattak Mauth Al-Hasan Jamel Nebhen Atif Jan |
| author_sort | Abdul Basit |
| collection | DOAJ |
| description | This study presents an ultracompact dual-band bandpass filter with controllable transmission zeros based on quarter-wave dual-mode resonator for GSM (global system for mobile communications) and GPS (global positioning system) wireless applications. The filter is made up of two quarter-wave resonators, which help to independently control the passbands. A direct feed resonator creates the first operating band, which serves as a feeding source for the interior resonator and operates at a higher frequency band. Therefore, a pair of transmission zeros can be energized between the two passbands, and high roll-off skirts are obtained. To reduce the size of the entire filter, the two resonators are bent and connected together through a hole in a metal base. The structure is symmetrical in nature, so both frequency bands can be obtained using the even-odd mode analysis method. For GSM applications, the center frequency of the first working band is 850 MHz, while for GPS wireless applications, the center frequency of the second working band is 1.57 GHz. Although there is a feed line (λg is based on a waveguide length of 850 MHz), the filter has been simulated and fabricated for verification, with an ultra-compact size of 0.10 λg × 0.09 λg (0.0095 λg2). The simulation results and measured results match well, and the theory of the design concept is recognized. |
| first_indexed | 2024-12-12T21:32:21Z |
| format | Article |
| id | doaj.art-64bd1eb7fa524111ab22a622589bcab0 |
| institution | Directory Open Access Journal |
| issn | 2671-7255 2671-7263 |
| language | English |
| last_indexed | 2024-12-12T21:32:21Z |
| publishDate | 2022-03-01 |
| publisher | The Korean Institute of Electromagnetic Engineering and Science |
| record_format | Article |
| series | Journal of Electromagnetic Engineering and Science |
| spelling | doaj.art-64bd1eb7fa524111ab22a622589bcab02022-12-22T00:11:17ZengThe Korean Institute of Electromagnetic Engineering and ScienceJournal of Electromagnetic Engineering and Science2671-72552671-72632022-03-0122213814510.26866/jees.2022.2.r.703488Design and Analysis of a Compact GSM/GPS Dual-Band Bandpass Filter Using a T-Shaped ResonatorAbdul Basit0Muhammad Irfan Khattak1Mauth Al-Hasan2Jamel Nebhen3Atif Jan4 Department of Electrical Engineering, University of Engineering and Technology, Peshawar, Pakistan Department of Electrical Engineering, University of Engineering and Technology, Peshawar, Pakistan College of Engineering, Al-Ain University, UAE Prince Sattam bin Abdulaziz University, Alkharj, Saudi Arabia Department of Electrical Engineering, University of Engineering and Technology, Peshawar, PakistanThis study presents an ultracompact dual-band bandpass filter with controllable transmission zeros based on quarter-wave dual-mode resonator for GSM (global system for mobile communications) and GPS (global positioning system) wireless applications. The filter is made up of two quarter-wave resonators, which help to independently control the passbands. A direct feed resonator creates the first operating band, which serves as a feeding source for the interior resonator and operates at a higher frequency band. Therefore, a pair of transmission zeros can be energized between the two passbands, and high roll-off skirts are obtained. To reduce the size of the entire filter, the two resonators are bent and connected together through a hole in a metal base. The structure is symmetrical in nature, so both frequency bands can be obtained using the even-odd mode analysis method. For GSM applications, the center frequency of the first working band is 850 MHz, while for GPS wireless applications, the center frequency of the second working band is 1.57 GHz. Although there is a feed line (λg is based on a waveguide length of 850 MHz), the filter has been simulated and fabricated for verification, with an ultra-compact size of 0.10 λg × 0.09 λg (0.0095 λg2). The simulation results and measured results match well, and the theory of the design concept is recognized.http://jees.kr/upload/pdf/jees-2022-2-r-70.pdfeven-odd-mode analysismicrostrip dual-band bpfquarter-wavelength resonatortransmission zeros |
| spellingShingle | Abdul Basit Muhammad Irfan Khattak Mauth Al-Hasan Jamel Nebhen Atif Jan Design and Analysis of a Compact GSM/GPS Dual-Band Bandpass Filter Using a T-Shaped Resonator Journal of Electromagnetic Engineering and Science even-odd-mode analysis microstrip dual-band bpf quarter-wavelength resonator transmission zeros |
| title | Design and Analysis of a Compact GSM/GPS Dual-Band Bandpass Filter Using a T-Shaped Resonator |
| title_full | Design and Analysis of a Compact GSM/GPS Dual-Band Bandpass Filter Using a T-Shaped Resonator |
| title_fullStr | Design and Analysis of a Compact GSM/GPS Dual-Band Bandpass Filter Using a T-Shaped Resonator |
| title_full_unstemmed | Design and Analysis of a Compact GSM/GPS Dual-Band Bandpass Filter Using a T-Shaped Resonator |
| title_short | Design and Analysis of a Compact GSM/GPS Dual-Band Bandpass Filter Using a T-Shaped Resonator |
| title_sort | design and analysis of a compact gsm gps dual band bandpass filter using a t shaped resonator |
| topic | even-odd-mode analysis microstrip dual-band bpf quarter-wavelength resonator transmission zeros |
| url | http://jees.kr/upload/pdf/jees-2022-2-r-70.pdf |
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