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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Acoustic Wave Filter Technology–A Review
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Acoustic Wave Filter Technology–A Review

机译：声波滤波器技术–综述

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摘要

Today, acoustic filters are the filter technology to meet the requirements with respect to performance dictated by the cellular phone standards and their form factor. Around two billion cellular phones are sold every year, and smart phones are of a very high percentage of approximately two-thirds. Smart phones require a very high number of filter functions ranging from the low double-digit range up to almost triple digit numbers in the near future. In the frequency range up to 1 GHz, surface acoustic wave (SAW) filters are almost exclusively employed, while in the higher frequency range, bulk acoustic wave (BAW) and SAW filters are competing for their shares. Prerequisites for the success of acoustic filters were the availability of high-quality substrates, advanced and highly reproducible fabrication technologies, optimum filter techniques, precise simulation software, and advanced design tools that allow the fast and efficient design according to customer specifications. This paper will try to focus on innovations leading to high volume applications of intermediate frequency (IF) and radio frequency (RF) acoustic filters, e.g., TV IF filters, IF filters for cellular phones, and SAW/BAW RF filters for the RF front-end of cellular phones.
机译：如今，声波滤波器已成为满足蜂窝电话标准及其外形要求的性能要求的滤波器技术。每年售出约20亿部蜂窝电话，而智能电话所占的比例非常高，约为三分之二。智能手机需要大量的过滤器功能，范围从低两位数范围到不久的将来几乎达到三位数。在高达1 GHz的频率范围内，几乎只使用表面声波（SAW）滤波器，而在较高的频率范围内，体声波（BAW）和SAW滤波器正在争夺它们的份额。声波滤波器成功的先决条件是高质量基板的可用性，先进且可重复生产的制造技术，最佳滤波器技术，精确的仿真软件以及先进的设计工具，这些工具可以根据客户要求进行快速高效的设计。本文将尝试着重于导致中频（IF）和射频（RF）声滤波器的大量应用的创新，例如，TV IF滤波器，用于手机的IF滤波器以及用于RF前端的SAW / BAW RF滤波器手机的末尾。

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