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首页> 外文期刊>Microwave and optical technology letters >A HIGH-POWER CARTESIAN FEEDBACK TRANSMITTER INCLUDING A COMPACT INVERTED DOHERTY AMPLIFIER
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A HIGH-POWER CARTESIAN FEEDBACK TRANSMITTER INCLUDING A COMPACT INVERTED DOHERTY AMPLIFIER

机译:高功率笛卡尔反馈变送器,包括紧凑的倒置DOHERTY放大器

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摘要

A high-power Cartesian feedback transmitter including a compact inverted Doherty amplifier is presented. The system efficiency was further improved using a bias line adjustment method for the compact inverted Doherty amplifier. After the bias line adjustment from a λ/4 line for the Doherty amplifier, a power-added efficiency (PAE) of 6.9% points was improved from 41.3 to 48.2% at an output power level of 45 dBm. The whole Cartesian feedback transmitter system exhibited an efficiency of 40% and an adjacent channel leakage ratio of -51 dBc at an output power of 45 dBm for 859 MHz band π/4-DQPSK applications.
机译:提出了一种高功率笛卡尔反馈发射机,其中包括紧凑的反向Doherty放大器。使用紧凑型倒置Doherty放大器的偏置线调整方法可进一步提高系统效率。从Doherty放大器的λ/ 4线调整偏置线后,在45 dBm的输出功率水平下,6.9%点的功率附加效率(PAE)从41.3提高到48.2%。对于859 MHz频带π/ 4-DQPSK应用,整个笛卡尔反馈发射机系统在输出功率为45 dBm时,效率为40%,相邻信道泄漏比为-51 dBc。

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