XLIM Unite Mixte de Recherche 6172, Universite de Limoges/Centre National de la Recherche Scientifique, 87060 Limoges Cedex, France.
IEEE Trans Ultrason Ferroelectr Freq Control. 2010 Jan;57(1):52-8. doi: 10.1109/TUFFC.2010.1378.
This article presents a design methodology for bulk acoustic wave (BAW) filters. First, an overview of BAW physical principles, BAW filter synthesis, and the modified Butterworth-van Dyke model are addressed. Next, design and optimization methodology is presented and applied to a mixed ladder-lattice BAW bandpass filter for the Universal Mobile Telecommunications System (UMTS) TX-band at 1.95 GHz and to ladder and lattice BAW bandpass filters for the DCS1800 TX-band at 1.75 GHz. In each case, BAW filters are based on AlN resonators. UMTS filter is designed with conventional molybdenum electrodes whereas DCS filters electrodes are made with innovative iridium.
本文提出了一种体声波（BAW）滤波器的设计方法。首先，介绍了 BAW 的物理原理、BAW 滤波器综合以及改进的巴特沃斯-范迪克模型。接下来，提出了设计和优化方法，并将其应用于用于通用移动通信系统（UMTS）TX 频段在 1.95GHz 的混合梯式-格型 BAW 带通滤波器和用于 DCS1800 TX 频段在 1.75GHz 的梯式和格型 BAW 带通滤波器。在每种情况下，BAW 滤波器都基于氮化铝谐振器。UMTS 滤波器采用传统的钼电极设计，而 DCS 滤波器的电极则采用创新的铱材料。
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