求翻译：摘要：由于移动通信的迅速发展，手机已经成为人们生活中必备的工具之一，它给人们带来很多的便利，但是与人们生活相关的问题也接踵而来。例如在自习室，电影院，音乐厅等手机已经成为分散人们注意力的干扰源，还有考场作弊，手机犯罪上的问题。因而如何研制一种手机信号屏蔽设备，以便在特定的场合形成移动通信的盲区，避免手机的负面使用，已成为许多人与部门研究的重要课题。本文提出了由锯齿波，压控振荡器，射频功放，发射天线四部分构成，锯齿波发生器有CD4066芯片双向模拟开关，NE555芯片电路等。是什么意思？

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Abstract: As a result of the mobile communication rapid development, the handset already became the people to live one of necessary tools, it brought very many conveniences to the people, but lived the related question with the people also to follow on somebody's heels.For example in the independent

Summary: due to the rapid development of mobile communications, mobile phones have become one of the must-have tool in people's lives, it gives rise to a lot of convenience, but also come with the issues related to people's lives. For example in study hall, cinemas, concert halls, such as mobile pho

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