研究目的
To present the design of an ultracompact monolithic millimeter-wave integrated circuit Doherty power amplifier (DPA) using a novel reconfigurable input network at Ka-band, achieving high efficiency and maximal power gain flatness, and maintaining high performance over a wide bandwidth.
研究成果
The proposed DPA achieves high efficiency and maximal power gain flatness with a reconfigurable input network, maintaining high performance over a 3-GHz frequency band from 26.5 to 29.5 GHz. The DPA is suitable for applications in the next generation of wireless systems.
研究不足
The DPA's performance is limited by the phase mismatch between the main and auxiliary amplifier paths, which can be mitigated by the reconfigurable input network. The design requires precise control of the relative phase offset to achieve optimal performance.
1：Experimental Design and Method Selection:
The design involves a compact broadside coupler and two additional field-effect transistors to form a reconfigurable input network. The DPA is fabricated in a 0.15-μm enhancement mode Gallium Arsenide (GaAs) process.
2：15-μm enhancement mode Gallium Arsenide (GaAs) process.
Sample Selection and Data Sources:
2. Sample Selection and Data Sources: The DPA prototype is fabricated and measured to verify the concept.
3：List of Experimental Equipment and Materials:
A 0.15-μm enhancement mode Gallium Arsenide (GaAs) process is used for fabrication. Measurement equipment includes a Keysight network analyzer N5247A PNA-X with on-wafer probes and Thru-Reflect-Line calibration.
4：15-μm enhancement mode Gallium Arsenide (GaAs) process is used for fabrication. Measurement equipment includes a Keysight network analyzer N5247A PNA-X with on-wafer probes and Thru-Reflect-Line calibration.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The DPA's performance is measured in terms of output power, gain, and power-added efficiency (PAE) at different frequencies and control states.
5：Data Analysis Methods:
The measured data is analyzed to evaluate the DPA's performance, including output power, gain, and PAE at different frequencies and control states.
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