Based of BAW formula, we elicit a new approximation formula.

Study of BAW resonator using technology of NbN AlN

基于NbN，AlN技术的体声波器件研究

The experimental results confirm that the insertion loss, BAW suppression, passband ripples and receiving loss of the wavelet reconstruction device using the new scheme are remarkably improved using early schemes.

实验结果表明，用新方案实现的小波重构器件比用早期方案实现的小波重构器件在插入损耗、体声波抑制、通带波纹和接收损耗方面均有明显的改善。

The properties and fabrications of some major materials for FBAR such as AlN, ZnO, PZT are introduced systematically, and the structures, devices design and applications of BAW filters are discussed as well.

系统介绍了用于薄膜体声波谐振器的几种主要材料（AlN、ZnO、PZT）的具体特点、制备工艺及薄膜体声波谐振器与滤波器的结构、设计及其应用。

This paper briefly reviewes the recent progress of VHF/ UHF crystal filter, the characters of VHF/ UHF resonator and the performances of VHF/ UHF crys-tal filter, and makes a comparison between BAW crystal filter and SAW resonator filter.

简要评述了近几年来VHF/UHF晶体滤波器的进展，讨论了VHF/UHF谐振器的特点、VHF/UHF晶体滤波器的性能，以及SAW晶体滤波器和谐振器性能的比较。

The fourth part is the core part of this paper. A coping strategy for BAW to strengthen its strategic risks management under the trend of economic globalization is discussed in this part.

第四部分是经济全球化背景下北汽有限公司加强战略风险管理的对策，本部分是本文的核心部分。

Study of RF-MEMS BAW Filter Using Surface Micromachining

基于硅表面加工工艺的射频体声波滤波器研究

C Band BAW Delay Lines with Ultra short Delay Time

C波段超短延时声体波延迟线

The Application and Trend of BAW Devices Using Piezoelectric Quartz Crystal

压电石英体声波器件的应用特点及发展趋势

The sensitivities to acceleration frequency of SAW resonators are obviously higher than that of BAW resonators.

表面波谐振器的加速度频率灵敏度明显高于体波谐振器的频率灵敏度。

The Application of BAW Delay Line in EW System

声体波延迟线在电子战中的应用

Research on Suppressing BAW in SAW Filter by Grooving on the Back of the Substrate

基片开槽抑制SAW滤波器体声波的工艺研究

The growth kinetics and the stability of synergistic films of benzotriazole ( BTA) and halide ion ( X-) were investigated by bulk acoustic wave ( BAW) method.

采用体声波传感技术就卤素离子与铜缓蚀剂&苯骈三氮唑（BTA）协同成膜的动力学及相应复合膜的稳定性进行了研究。

Some 4.2 GHz BAW delay line devices were produced, which delay time is 50 ns and 70 ns respectively.

制作了工作频率4.2GHz，延迟时间分别为50ns和70ns的器件。

A High Power Reflective BAW Microwave Delay Line

大功率反射式体声波微波延迟线

The international standard for radar altimeter is 4.3 GHz. The calibration of altimeter and corresponding target stimulation is implemented by co-core cable delay line or BAW microwave delay line.

国际通用的无线电高度计频段在4.3GHz，高度计校准和相应的目标模拟一般都采用同轴电缆延迟线或声体波微波延迟线。

The slowness curves of BAW in different planes of LGS were plotted. The propagating characteristics of SAW were also described.

从理论上分析计算了LGS声体波传播特性，画出BAW慢度曲线。

It appears that, in general, the acoustic velocity of the LGS crystal is about 1000m/ s smaller than that of α-SiO_2.The results can provide some theoretical guidances for design and application of the LGS crystal in BAW device.

计算了声速的最大值并与石英进行比较，结果表明LGS晶体的BAW传播速度一般比石英低1000m/s左右。为该晶体在声体波器件等方面的设计和应用提供了一定的理论指导作用。

The successful development of a high power reflective BAW ( Bulk Acoustic Wave) microwave delay line with a one-port network is repo-rted utilizing the configuration of a one-dimensionally longitudinal Au// Cr/ ZnO/ Au/ Cr/ Z-Al2O3 thin film transducer.

本报告介绍了采用Au/Cr/ZnO/Au/Cr/Z-Al2O q一维纵向薄膜换能器结构，研制成大功率反射式体声波单端口网络的微波延迟线。

However, traditional BAW sensors have been found obvious disadvantages in many practical applications.

但是，传统的体声波传感器在实际应用中存在许多明显的不足。

Major problems in application of BMS and cause analyses

BMS系统应用中的主要问题及原因分析