A Broadband Reconfigurable Load Modulated Balanced Amplifier (LMBA)

A Broadband Reconfigurable Load Modulated Balanced Amplifier (LMBA)
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宽带可重构负载调制平衡放大器(LMBA)

DOI:
10.1109/mwsym.2017.8058743
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发表时间:
2017
期刊:
2017 IEEE MTT-S International Microwave Symposium (IMS)
影响因子:
--
通讯作者:
S. Cripps
S. Cripps
中科院分区:
--
文献类型:
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作者:
D. Shepphard;J. Powell;S. Cripps

文献摘要

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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基板和 GaN 分立器件。在 P3dB 左右时可实现高于 39.5 dBm 的最大输出功率水平。在 4.5 和 7.5 GHz 之间,DE 高于 60%,功率回退至 7 dB,固定 CSP 为 1 W,偏置在 18 到 28 V 之间。
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.