中频SAW滤波器在日本市场的手机应用

1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027) Pub Date : 1999-10-17 DOI:10.1109/ULTSYM.1999.849414

Y. Yamamoto, H. Kawahara, N. Sakairi, Y. Takahashi, R. Kajihara, T. Tsuda, S. Yoshimoto

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引用次数: 5

摘要

日本、欧洲、北美和其他国家的手机市场发展迅速。日本的主要移动电话系统是PDC (Personal Digital Cellular)和PHS (Personal Handy phone system)，而新服务cdmaOneTM从去年开始才开始运营。而W-CDMA系统将作为日本的新一代移动电话系统，从2001年开始投入使用。由于这些系统采用不同的通信方式，系统的中频滤波器的规格与欧洲GSM和北美AMPS完全不同。此外，在日本市场上，小而轻的手机产品更受欢迎，这些中频SAW滤波器的尺寸正在逐年缩小。本文介绍了日本市场上手机用中频SAW滤波器的技术概况和最新发展趋势，并对其未来发展趋势进行了讨论。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Intermediate frequency SAW filters for mobile phone application in Japanese markets

Mobile market in Japan is rapidly growing as well as Europe, North America and other countries. The major mobile phone system in Japan are PDC (Personal Digital Cellular) and PHS (Personal Handy Phone System), and the new service called cdmaOneTM has just started since last year. And W-CDMA system is expected to start on 2001 as new generation of mobile phone system in Japan. Since these system utilize different communication method, the specifications of the intermediate frequency (IF) filters for the systems are totally different from each other and from that of European GSM and north American AMPS. In addition, tiny and light mobile phone products are preferable in Japanese market, the size of these IF SAW filters are shrinking year by year. In this paper the technical outlines of IF SAW filter for mobile phones in Japanese market and their recent trends will be described, and also their future trend will be discussed.

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来源期刊

1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027)

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