Design of a New Step-like Frame FBAR for Suppression of Spurious Resonances
Film bulk acoustic wave resonators (FBARs) are of great interest for wireless applications due to its inherent advantages at microwave frequencies. However, the presence of spurious modes near the main resonance degrades the performance of resonators and requires development of new methods to suppre...
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Format: | Article |
Language: | English |
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Spolecnost pro radioelektronicke inzenyrstvi
2013-09-01
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Series: | Radioengineering |
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Online Access: | http://www.radioeng.cz/fulltexts/2013/13_03_0687_0693.pdf |
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author | P. Kumar C. C. Tripathi |
author_facet | P. Kumar C. C. Tripathi |
author_sort | P. Kumar |
collection | DOAJ |
description | Film bulk acoustic wave resonators (FBARs) are of great interest for wireless applications due to its inherent advantages at microwave frequencies. However, the presence of spurious modes near the main resonance degrades the performance of resonators and requires development of new methods to suppress such unwanted modes. Different techniques are used to suppress these spurious modes. In this paper, we present design of a new step-like frame structure film bulk acoustic wave resonator operating near 1.5 GHz. The simulated results are compared with simple frame-like structure. The spurious resonances are eliminated effectively and smooth pass band is obtained with effective coupling coefficient of 5.68% and quality factor of 1800. The equivalent electrical mBVD model of the FBAR based on impedance response is also presented. These highly smooth phase response and passband skirt steepness resonators are most demanding for the design of low cost, small size and high performance filters, duplexers and oscillators for wireless systems. |
first_indexed | 2024-12-23T19:08:13Z |
format | Article |
id | doaj.art-7111e4a6fbff400ebb480520b959c4e5 |
institution | Directory Open Access Journal |
issn | 1210-2512 |
language | English |
last_indexed | 2024-12-23T19:08:13Z |
publishDate | 2013-09-01 |
publisher | Spolecnost pro radioelektronicke inzenyrstvi |
record_format | Article |
series | Radioengineering |
spelling | doaj.art-7111e4a6fbff400ebb480520b959c4e52022-12-21T17:34:32ZengSpolecnost pro radioelektronicke inzenyrstviRadioengineering1210-25122013-09-01223687693Design of a New Step-like Frame FBAR for Suppression of Spurious ResonancesP. KumarC. C. TripathiFilm bulk acoustic wave resonators (FBARs) are of great interest for wireless applications due to its inherent advantages at microwave frequencies. However, the presence of spurious modes near the main resonance degrades the performance of resonators and requires development of new methods to suppress such unwanted modes. Different techniques are used to suppress these spurious modes. In this paper, we present design of a new step-like frame structure film bulk acoustic wave resonator operating near 1.5 GHz. The simulated results are compared with simple frame-like structure. The spurious resonances are eliminated effectively and smooth pass band is obtained with effective coupling coefficient of 5.68% and quality factor of 1800. The equivalent electrical mBVD model of the FBAR based on impedance response is also presented. These highly smooth phase response and passband skirt steepness resonators are most demanding for the design of low cost, small size and high performance filters, duplexers and oscillators for wireless systems.www.radioeng.cz/fulltexts/2013/13_03_0687_0693.pdfFilm Bulk Acoustic Wave Resonatorstep-like framespurious resonanceeffective coupling coefficientCOMSOL Multiphysics |
spellingShingle | P. Kumar C. C. Tripathi Design of a New Step-like Frame FBAR for Suppression of Spurious Resonances Radioengineering Film Bulk Acoustic Wave Resonator step-like frame spurious resonance effective coupling coefficient COMSOL Multiphysics |
title | Design of a New Step-like Frame FBAR for Suppression of Spurious Resonances |
title_full | Design of a New Step-like Frame FBAR for Suppression of Spurious Resonances |
title_fullStr | Design of a New Step-like Frame FBAR for Suppression of Spurious Resonances |
title_full_unstemmed | Design of a New Step-like Frame FBAR for Suppression of Spurious Resonances |
title_short | Design of a New Step-like Frame FBAR for Suppression of Spurious Resonances |
title_sort | design of a new step like frame fbar for suppression of spurious resonances |
topic | Film Bulk Acoustic Wave Resonator step-like frame spurious resonance effective coupling coefficient COMSOL Multiphysics |
url | http://www.radioeng.cz/fulltexts/2013/13_03_0687_0693.pdf |
work_keys_str_mv | AT pkumar designofanewsteplikeframefbarforsuppressionofspuriousresonances AT cctripathi designofanewsteplikeframefbarforsuppressionofspuriousresonances |