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900MH z个人无线电台由于采用了多信道共用体制,并实施无控制中心移动通信、性能优良、成本低廉,在日本受到广大市民的欢迎,销售量以创纪录的速度急剧增长。我国用户和研制、生产单位对这一新颖系统极为关注。本文通过对日本几家公司产品的分析,着重介绍这种系统基地台、移动台的电路构成特点以及产品更新换代的改进动向,最后介绍了该系统手特机的电路特点,可供我国有关的研制、生产单位参考。
900MH z Personal Radio Thanks to the multi-channel sharing system and the implementation of uncontrolled mobile communications, high performance and low cost, the 900Mhz personal radio station has been well received by the general public in Japan and sales have risen sharply at a record pace. Our users and research and development, production units are extremely concerned about this new system. This article through the analysis of several Japanese companies, focusing on the introduction of the base station of this system, the characteristics of the mobile station’s circuit structure and product updates to improve the trend, and finally introduced the system features special handset circuit available for our relevant Development, production unit for reference.