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2010•Journal of Electrical & Electronic EducationRequires access

The Design of RF Power Amplifier Based on Load-Pull Technique

WU Ming-zan

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Abstract

The optimum load point corresponding to the expected power of an amplifier can be found elastically by the use of load-pull technique.In this paper,the design of power amplifier for 5.2GHz WLAN is described based on that technique.The technique is applied to a three-stage differential amplifier,and then the input-output matching network is designed.At last,the global simulation is completed by the software of ADS.The power amplifier operates at 1.8V power supply,with 29dB power gain,18.3dBm out-put power at P1dB and 16.8% PAE(power added efficiency).That result meets the requirements of the system.

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What this paper is about

The optimum load point corresponding to the expected power of an amplifier can be found elastically by the use of load-pull technique.In this paper,the design of power amplifier for 5.2GHz WLAN is described based on that technique.The technique is applied to a three-stage differential amplifier,and then the input-output matching network is designed.At last,the global simulation is completed by the software of ADS.The power amplifier operates at 1.8V power supply,with 29dB power gain,18.3dBm out-put power at P1dB and 16.8% PAE(power added efficiency).That result meets the requirements of the system.

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Available abstract

The optimum load point corresponding to the expected power of an amplifier can be found elastically by the use of load-pull technique.In this paper,the design of power amplifier for 5.2GHz WLAN is described based on that technique.The technique is applied to a three-stage differential amplifier,and then the input-output matching network is designed.At last,the global simulation is completed by the software of ADS.The power amplifier operates at 1.8V power supply,with 29dB power gain,18.3dBm out-put power at P1dB and 16.8% PAE(power added efficiency).That result meets the requirements of the system.

Key concepts: Amplifier, RF power amplifier, Power-added efficiency, Linear amplifier, Direct-coupled amplifier, Power bandwidth, Power (physics), Electrical engineering

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