Reconfigurable Ring Filter with Controllable Frequency Response
Reconfigurable ring filter based on single-side-access ring topology is presented. Using capacitive tuning elements, the electrical length of the ring can be manipulated to shift the nominal center frequency to a desired position. A synthesis is developed to determine the values of the capacitive el...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2014-01-01
|
| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/671369 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832554666158718976 |
|---|---|
| author | Norfishah Ab Wahab Mohd Khairul Mohd Salleh Zuhani Ismail Khan Nur Emileen Abd Rashid |
| author_facet | Norfishah Ab Wahab Mohd Khairul Mohd Salleh Zuhani Ismail Khan Nur Emileen Abd Rashid |
| author_sort | Norfishah Ab Wahab |
| collection | DOAJ |
| description | Reconfigurable ring filter based on single-side-access ring topology is presented. Using capacitive tuning elements, the electrical length of the ring can be manipulated to shift the nominal center frequency to a desired position. A synthesis is developed to determine the values of the capacitive elements. To show the advantage of the synthesis, it is applied to the reconfigurable filter design using RF lumped capacitors. The concept is further explored by introducing varactor-diodes to continuously tune the center frequency of the ring filter. For demonstration, two prototypes of reconfigurable ring filters are realized using microstrip technology, simulated, and measured to validate the proposed concept. The reconfigured filter using lumped elements is successfully reconfigured from 2 GHz to 984.4 MHz and miniaturized by 71% compared to the filter directly designed at the same reconfigured frequency, while, for the filter using varactor-diodes, the frequency is chosen from 1.10 GHz to 1.38 GHz spreading over 280 MHz frequency range. Both designs are found to be compact with acceptable insertion loss and high selectivity. |
| format | Article |
| id | doaj-art-d19db97f2e2a435fa9eb2dec6d55c8a0 |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-d19db97f2e2a435fa9eb2dec6d55c8a02025-02-03T05:50:58ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/671369671369Reconfigurable Ring Filter with Controllable Frequency ResponseNorfishah Ab Wahab0Mohd Khairul Mohd Salleh1Zuhani Ismail Khan2Nur Emileen Abd Rashid3Microwave Technology Centre, Faculty of Electrical Engineering, Universiti Teknologi MARA (UiTM), 40150 Shah Alam, Selangor, MalaysiaMicrowave Technology Centre, Faculty of Electrical Engineering, Universiti Teknologi MARA (UiTM), 40150 Shah Alam, Selangor, MalaysiaMicrowave Technology Centre, Faculty of Electrical Engineering, Universiti Teknologi MARA (UiTM), 40150 Shah Alam, Selangor, MalaysiaMicrowave Technology Centre, Faculty of Electrical Engineering, Universiti Teknologi MARA (UiTM), 40150 Shah Alam, Selangor, MalaysiaReconfigurable ring filter based on single-side-access ring topology is presented. Using capacitive tuning elements, the electrical length of the ring can be manipulated to shift the nominal center frequency to a desired position. A synthesis is developed to determine the values of the capacitive elements. To show the advantage of the synthesis, it is applied to the reconfigurable filter design using RF lumped capacitors. The concept is further explored by introducing varactor-diodes to continuously tune the center frequency of the ring filter. For demonstration, two prototypes of reconfigurable ring filters are realized using microstrip technology, simulated, and measured to validate the proposed concept. The reconfigured filter using lumped elements is successfully reconfigured from 2 GHz to 984.4 MHz and miniaturized by 71% compared to the filter directly designed at the same reconfigured frequency, while, for the filter using varactor-diodes, the frequency is chosen from 1.10 GHz to 1.38 GHz spreading over 280 MHz frequency range. Both designs are found to be compact with acceptable insertion loss and high selectivity.http://dx.doi.org/10.1155/2014/671369 |
| spellingShingle | Norfishah Ab Wahab Mohd Khairul Mohd Salleh Zuhani Ismail Khan Nur Emileen Abd Rashid Reconfigurable Ring Filter with Controllable Frequency Response The Scientific World Journal |
| title | Reconfigurable Ring Filter with Controllable Frequency Response |
| title_full | Reconfigurable Ring Filter with Controllable Frequency Response |
| title_fullStr | Reconfigurable Ring Filter with Controllable Frequency Response |
| title_full_unstemmed | Reconfigurable Ring Filter with Controllable Frequency Response |
| title_short | Reconfigurable Ring Filter with Controllable Frequency Response |
| title_sort | reconfigurable ring filter with controllable frequency response |
| url | http://dx.doi.org/10.1155/2014/671369 |
| work_keys_str_mv | AT norfishahabwahab reconfigurableringfilterwithcontrollablefrequencyresponse AT mohdkhairulmohdsalleh reconfigurableringfilterwithcontrollablefrequencyresponse AT zuhaniismailkhan reconfigurableringfilterwithcontrollablefrequencyresponse AT nuremileenabdrashid reconfigurableringfilterwithcontrollablefrequencyresponse |