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首页> 外文期刊>IEEE Journal of Solid-State Circuits >A GaAs upconverter MMIC with an automatic gain control amplifier for 1.9 GHz PHS
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A GaAs upconverter MMIC with an automatic gain control amplifier for 1.9 GHz PHS

机译:具有用于1.9 GHz PHS的自动增益控制放大器的GaAs上变频器MMIC

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摘要

A newly developed GaAs upconverter MMIC with an automatic gain control (AGC) amplifier is presented. The design objectives, considerations, problems, and their solutions are described. The circuit is designed for a 1.9 GHz radio-frequency transceiver for the Japanese Personal Handyphone System applications. The features of the upconverter are: (1) on-chip 50 /spl Omega/ impedance matching for all AC input and output signals; (2) a doubly balanced Gilbert cell and a two-stage AGC amplifier with matching circuits that provide 23.0 dB conversion gain, -39 dBc LO suppression, -23 dBc image suppression, and 30 dB gain control; (3) an adjacent channel power of -70 dBc, and (4) a die size of only 2.87 mm/sup 2/ (2.52 mm/spl times/1.14 mm).
机译:介绍了一种新开发的具有自动增益控制(AGC)放大器的GaAs上变频器MMIC。描述了设计目标,注意事项,问题及其解决方案。该电路设计用于日本个人手持电话系统应用的1.9 GHz射频收发器。上变频器的功能包括:(1)片上50 / spl Omega /阻抗匹配所有交流输入和输出信号; (2)双平衡吉尔伯特单元和两级AGC放大器,具有匹配电路,可提供23.0 dB的转换增益,-39 dBc的LO抑制,-23 dBc的图像抑制和30 dB的增益控制; (3)-70 dBc的相邻通道功率,(4)芯片尺寸仅为2.87 mm / sup 2 /(2.52 mm / spl乘以1.14 mm)。

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