Design of a Low-Cost Low-Profile Energy Efficient 64-QAM Load Modulator

Ferhad Kasem,Robert Winter,Rouhollah Feghhi,Karumudi Rambabu,Witold A. Krzymien

IEEE Transactions on Microwave Theory and Techniques（2022）

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摘要

The design of a 64-QAM I/Q modulator based on load modulation is presented. The modulator is designed to operate at 3 GHz. In any standard M-QAM modulation, the RF circuitry of the voltage source generates currents on the antenna corresponding to the transmitted signals. With load modulation, the waveforms of the M-QAM constellation points are generated by changing the internal parameters of the l...

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关键词

Modulation,Radio frequency,Transmitters,Loaded antennas,Impedance,Peak to average power ratio,Antenna arrays

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