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Two-band mobile radio communication device power amplifier output and method for two-band mobile radio communication device power amplifier output chain
Two-band mobile radio communication device power amplifier output and method for two-band mobile radio communication device power amplifier output chain
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机译:两频带移动无线电通信设备功率放大器输出以及两频带移动无线电通信设备功率放大器输出链的方法
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摘要
To effectively suppress harmonics in a dual band mobile phone with a power amplifier (10) outputting transmitting signals for different frequency bands (GSM; PCS, DCS) via a single output as described a power amplifier output circuit in which harmonics are filtered through impedance transformation of a turn-off impedance of a transmitter/receiver change over unit (36, 38). Hereby the desired filtering of harmonics may be achieved without almost no additional expenditure.
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