Volume 22, Issue 1 (JIAEEE Vol.22 No.1 2025)                   Journal of Iranian Association of Electrical and Electronics Engineers 2025, 22(1): 1-9 | Back to browse issues page

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Imani M, Fasihi K. Design and simulation of 1×4 phononic crystals based acoustic demultiplexers with square and triangular lattices. Journal of Iranian Association of Electrical and Electronics Engineers 2025; 22 (1) :1-9
URL: http://jiaeee.com/article-1-1665-en.html
Design and simulation of 1×4 phononic crystals based acoustic demultiplexers with square and triangular lattices
Maryam Imani , Kiazand Fasihi *
Golestan university & Faculty of Engineering, Golestan University
Abstract:   (728 Views)
Phononic crystals consist of periodic distributions of scatterers in a host matrix. Destructive interference of several scattered waves leads to the appearance of the most prominent characteristic of phononic crystals, namely the phononic band gap. Using these crystals and creating defects in its periodicity, these crystals can be used in various applications such as filters, lenses, waveguides, demultiplexers, sensors, etc. In this study, we present two 2D phononic crystals with square and triangular lattices of water cylinders in mercury. To simulate the proposed devices, plane wave expansion method and finite element method in Comsol multiphysics software are used. The resonant frequencies of the proposed 1×4  demultiplexer with square lattice are 66.09, 68.23, 70.27 and 72.49 KHz. In this structure the mean of quality factors is 3042, the minimum crosstalk is -42 dB, and the dimensions of the structure is 218×118 15 mm2" id="_x0000_i1027" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAC0AAAAXCAIAAAAQmVEGAAAAAXNSR0IArs4c6QAAAAlwSFlzAAAT/gAAE/4BB5Q5hAAAARRJREFUSEvtls0RgyAQhTG1ZHJKBdgPtkM6yYl0YAWMB6EXsvwsiBNiGGfUmbgXUR/yubsPbYwx5ABx2ZZBP7q2bTDa7hWXh3xsF4pTQphQxijBLALlMLZBtoPIV3JIB+Bw+WAC4XbKB2SDJoi96iJYDrELh+IMMwFZwWFeF988vpGF4CycUQZtDR0eb04eVKU3xtskxWcO8BNHobdUmuftFkCj3+r06T2RpMQRFw6C+cJ4HpsMQX/VF/aJpf30ertX7bi1enz4EkcVxArxyZEnb54PPYb7ctR2pEfpLvSDckc19O4on/5TWasvli7v36m9wZuZz8ARmfutQ2r1xa9q85//QcWynH757pcVW9GqqUepyxvS4j3AipqLKgAAAABJRU5ErkJggg==" style="width:24.9pt; height:12.75pt" > 15 mm2" id="_x0000_i1025" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAC0AAAAXCAIAAAAQmVEGAAAAAXNSR0IArs4c6QAAAAlwSFlzAAAT/gAAE/4BB5Q5hAAAARRJREFUSEvtls0RgyAQhTG1ZHJKBdgPtkM6yYl0YAWMB6EXsvwsiBNiGGfUmbgXUR/yubsPbYwx5ABx2ZZBP7q2bTDa7hWXh3xsF4pTQphQxijBLALlMLZBtoPIV3JIB+Bw+WAC4XbKB2SDJoi96iJYDrELh+IMMwFZwWFeF988vpGF4CycUQZtDR0eb04eVKU3xtskxWcO8BNHobdUmuftFkCj3+r06T2RpMQRFw6C+cJ4HpsMQX/VF/aJpf30ertX7bi1enz4EkcVxArxyZEnb54PPYb7ctR2pEfpLvSDckc19O4on/5TWasvli7v36m9wZuZz8ARmfutQ2r1xa9q85//QcWynH757pcVW9GqqUepyxvS4j3AipqLKgAAAABJRU5ErkJggg==" style="width:24.9pt; height:12.75pt" > . The resonant frequencies of the second proposed 1×4 demultiplexer with triangular lattice are 75.69, 74.98, 74.26 and 73.57 KHz. In this structure the mean quality factor is 6326, the minimum crosstalk is -34 dB, and the dimensions of the structure is 103×297 15mm2" id="_x0000_i1028" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACkAAAAXCAIAAAAZcvF8AAAAAXNSR0IArs4c6QAAAAlwSFlzAAAT/gAAE/4BB5Q5hAAAAQJJREFUSEvtVskNwyAQxKklyisV4H5wO6STvEgHrsDyw9DLZjkWjBUk8zCWkuyHa83soBlwBwDspLgcj2seQ993FP3wipDI+9jQkjMmlAbQSlhYLrFvgx0LnO/uyjgJ2/EWigpqyBtZ8wTc8syVyIGbYWspiDGypy4DLwAvQKWkCCMuUI6ozLi4+rgqH8DLO0XCRu1LWvTyT7neGqG46I26/MSN0NfYESxMbsFoHIVCxe3NL/j40712vd2rbrvafNq8wZ1a5PHL2GYJxzItxvbMMrmJcdau1fPo2unpn6Da/OKh5/ZDH2WeQCVn7rTKXk/syS++Vt13/zv8db45gV/19xu+BMYpV9jCmgAAAABJRU5ErkJggg==" style="width:22.7pt; height:12.75pt" > 15mm2" id="_x0000_i1026" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACkAAAAXCAIAAAAZcvF8AAAAAXNSR0IArs4c6QAAAAlwSFlzAAAT/gAAE/4BB5Q5hAAAAQJJREFUSEvtVskNwyAQxKklyisV4H5wO6STvEgHrsDyw9DLZjkWjBUk8zCWkuyHa83soBlwBwDspLgcj2seQ993FP3wipDI+9jQkjMmlAbQSlhYLrFvgx0LnO/uyjgJ2/EWigpqyBtZ8wTc8syVyIGbYWspiDGypy4DLwAvQKWkCCMuUI6ozLi4+rgqH8DLO0XCRu1LWvTyT7neGqG46I26/MSN0NfYESxMbsFoHIVCxe3NL/j40712vd2rbrvafNq8wZ1a5PHL2GYJxzItxvbMMrmJcdau1fPo2unpn6Da/OKh5/ZDH2WeQCVn7rTKXk/syS++Vt13/zv8db45gV/19xu+BMYpV9jCmgAAAABJRU5ErkJggg==" style="width:22.7pt; height:12.75pt" > . Both proposed structures are superior in terms of dimensions, ease of construction and performance parameters.
Keywords: Acoustic demultiplexer, phononic crystal, square and triangular lattices, crosstalk, quality factor
Full-Text [PDF 1330 kb]   (113 Downloads)    
Type of Article: Research | Subject: Electronic
Received: 2023/11/18 | Accepted: 2024/11/30 | Published: 2025/05/29
Extended Abstract [PDF 195 KB]  (13 Download)
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