Initial Design and Quick Analysis of SAW Ultra–Wideband HFM Transducers
This paper presents techniques for initial design and quick fundamental and harmonic operation analysis of surface acoustic waves ultra–wideband hyperbolically frequency modulated (HFM) interdigital transducer (IDT). The primary analysis is based on the quasi–static method. Quasi–electrostatic charg...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Spolecnost pro radioelektronicke inzenyrstvi
2017-09-01
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| Series: | Radioengineering |
| Subjects: | |
| Online Access: | https://www.radioeng.cz/fulltexts/2017/17_03_0682_0690.pdf |
| _version_ | 1818236726768828416 |
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| author | A. Janeliauskas V. Markevicius D. Navikas D. Andriukaitis A. Valinevicius M. Zilys |
| author_facet | A. Janeliauskas V. Markevicius D. Navikas D. Andriukaitis A. Valinevicius M. Zilys |
| author_sort | A. Janeliauskas |
| collection | DOAJ |
| description | This paper presents techniques for initial design and quick fundamental and harmonic operation analysis of surface acoustic waves ultra–wideband hyperbolically frequency modulated (HFM) interdigital transducer (IDT). The primary analysis is based on the quasi–static method. Quasi–electrostatic charge's density distribution was approximated by Chebyshev polynomials and the method of Green’s function. It assesses the non uniform charge distribution of electrodes, electric field interaction and the end effects of a whole transducer. It was found that numerical integration (e.g. Romberg, Gauss–Chebyshev) requires a lot of machine time for calculation of the Chebyshev polynomial and the Green’s function convolution when integration includes coordinates of a large number of neighboring electrodes. In order to accelerate the charge density calculation, the analytic expressions are derived. Evaluation of HFM transducer fundamental and harmonics' operation amplitude response with simulation single–dispersive interdigital chirp filter structure is presented. Elapsed time of HFM IDT with 589 electrodes simulations and 2000 frequency response point is only 54 seconds (0.027 s/point) on PC with CPU Intel Core I7–4770S. Amplitude response is compared with linear frequency modulated (LFM) IDT response. It was determined that the HFM transducer characteristic is less distorted in comparison with LFM transducer. |
| first_indexed | 2024-12-12T12:14:27Z |
| format | Article |
| id | doaj.art-1c9036a636914f12a9b5fce4b531deff |
| institution | Directory Open Access Journal |
| issn | 1210-2512 |
| language | English |
| last_indexed | 2024-12-12T12:14:27Z |
| publishDate | 2017-09-01 |
| publisher | Spolecnost pro radioelektronicke inzenyrstvi |
| record_format | Article |
| series | Radioengineering |
| spelling | doaj.art-1c9036a636914f12a9b5fce4b531deff2022-12-22T00:24:47ZengSpolecnost pro radioelektronicke inzenyrstviRadioengineering1210-25122017-09-01263682690Initial Design and Quick Analysis of SAW Ultra–Wideband HFM TransducersA. JaneliauskasV. MarkeviciusD. NavikasD. AndriukaitisA. ValineviciusM. ZilysThis paper presents techniques for initial design and quick fundamental and harmonic operation analysis of surface acoustic waves ultra–wideband hyperbolically frequency modulated (HFM) interdigital transducer (IDT). The primary analysis is based on the quasi–static method. Quasi–electrostatic charge's density distribution was approximated by Chebyshev polynomials and the method of Green’s function. It assesses the non uniform charge distribution of electrodes, electric field interaction and the end effects of a whole transducer. It was found that numerical integration (e.g. Romberg, Gauss–Chebyshev) requires a lot of machine time for calculation of the Chebyshev polynomial and the Green’s function convolution when integration includes coordinates of a large number of neighboring electrodes. In order to accelerate the charge density calculation, the analytic expressions are derived. Evaluation of HFM transducer fundamental and harmonics' operation amplitude response with simulation single–dispersive interdigital chirp filter structure is presented. Elapsed time of HFM IDT with 589 electrodes simulations and 2000 frequency response point is only 54 seconds (0.027 s/point) on PC with CPU Intel Core I7–4770S. Amplitude response is compared with linear frequency modulated (LFM) IDT response. It was determined that the HFM transducer characteristic is less distorted in comparison with LFM transducer.https://www.radioeng.cz/fulltexts/2017/17_03_0682_0690.pdfSurface acoustic waveSAWhyperbolically frequency modulated waveformsHFMinterdigital transducerIDTquasi–static methodChebyshev polynomial approximationGreen’s functioninterdigital chirp filterharmonics' operation |
| spellingShingle | A. Janeliauskas V. Markevicius D. Navikas D. Andriukaitis A. Valinevicius M. Zilys Initial Design and Quick Analysis of SAW Ultra–Wideband HFM Transducers Radioengineering Surface acoustic wave SAW hyperbolically frequency modulated waveforms HFM interdigital transducer IDT quasi–static method Chebyshev polynomial approximation Green’s function interdigital chirp filter harmonics' operation |
| title | Initial Design and Quick Analysis of SAW Ultra–Wideband HFM Transducers |
| title_full | Initial Design and Quick Analysis of SAW Ultra–Wideband HFM Transducers |
| title_fullStr | Initial Design and Quick Analysis of SAW Ultra–Wideband HFM Transducers |
| title_full_unstemmed | Initial Design and Quick Analysis of SAW Ultra–Wideband HFM Transducers |
| title_short | Initial Design and Quick Analysis of SAW Ultra–Wideband HFM Transducers |
| title_sort | initial design and quick analysis of saw ultra wideband hfm transducers |
| topic | Surface acoustic wave SAW hyperbolically frequency modulated waveforms HFM interdigital transducer IDT quasi–static method Chebyshev polynomial approximation Green’s function interdigital chirp filter harmonics' operation |
| url | https://www.radioeng.cz/fulltexts/2017/17_03_0682_0690.pdf |
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