宽带可重构负载调制平衡放大器(LMBA)

2017 IEEE MTT-S International Microwave Symposium (IMS) Pub Date : 2017-10-05 DOI:10.1109/MWSYM.2017.8058743

D. Shepphard, J. Powell, S. Cripps

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引用次数: 25

摘要

负载调制平衡放大器(LMBA)使用控制信号(CSP)注入平衡放大器(BA)输出耦合器的正常端接端口，以调制BA晶体管的阻抗。这里描述的混合电路演示器使用金属背衬多层有机衬底和GaN分立器件。39.5 dBm以上的最大输出功率水平在P3dB左右实现。在固定CSP为1w的情况下，功率回退至7db时，DE在4.5至7.5 GHz之间，高于60%，偏置在18至28 V之间。

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A Broadband Reconfigurable Load Modulated Balanced Amplifier (LMBA)

The Load Modulated Balanced Amplifier (LMBA) uses a control signal (CSP), injected to the normally terminated port at the output coupler of a balanced amplifier (BA), to modulate the BA transistor's impedance. The hybrid circuit demonstrator described here uses metal-backed multilayer organic substrate and GaN discrete devices. Maximum output power levels above 39.5 dBm are achieved at around P3dB. DE above 60% is seen between 4.5 and 7.5 GHz for power back-off to 7 dB with a fixed CSP of 1 W, and the bias between 18 to 28 V.

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2017 IEEE MTT-S International Microwave Symposium (IMS)

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