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伴随着小型无线电台和国内外汽车电话等移动通信需求的急剧增加,日本电气公司(NEC)研制出用于发射级功放用的高频、高功率的900MHz 带的功放模块。本功放模块具有高功率、高增益、高效率和工作稳定等优异电气特性以及体积小、重量轻、成本低等特点。本文介绍了 NEC 开发的这种900MHz 带移动通信用的功放模块产品系列及其特点。特别,对其设计要点、主要特性和应用实例,通过取自小型无线电台用的功放模块 MC—5803为例,加以具体说明。
With the drastic increase of demand for mobile communications such as small radio stations and domestic and foreign car phones, NEC has developed a high-frequency, high-power 900MHz band power amplifier module for transmitting power amplifiers. The power amplifier module with high power, high gain, high efficiency and stability and other excellent electrical characteristics and small size, light weight, low cost and so on. This article describes the family of 900MHz amplifiers for mobile communications developed by NEC and its features. In particular, the design features, main features and application examples are given by way of an example of the power amplifier module MC-5803 taken from a small radio station.