Highly efficient harmonically tuned broadband GaN power amplifier
Highly efficient harmonically tuned broadband GaN power amplifier
复制标题
高效谐波调谐宽带 GaN 功率放大器
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
G. Boeck
中科院分区：
文献类型：
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作者：
A. A. Tanany;D. Gruner;A. Sayed;G. Boeck
谐波阻抗对功率放大器的性能的影响，提出了跨越宽带宽。基于这种方法，一组阻抗的第一，第二和第三次谐波的频带被发现，不影响输出功率（POut）和功率附加效率（PAE）。在3 dB压缩点，测量的Pout为40 dBm ± 1.5 dB，PAE在1.5 GHz-2.75 GHz带宽（60%带宽）范围内介于58.7%-78.0%之间。通过扫描漏极电源电压、栅极偏置电压和注入WCDMA驱动信号来进行线性度测量，以在不影响性能的情况下找到最佳线性度。在2.15 GHz时，在Pout 3 dB压缩点的8.5 dB回退功率下，线性度为−36 dBc。
The influence of the harmonic impedances on the power amplifier performance is presented across a wide bandwidth. Based on this method, a set of impedances for the first, second and third harmonics across the band was found which do not affect output power (POut) and power added efficiency (PAE). At the 3 dB compression point, the measured Pout is 40 dBm ± 1.5 dB, and the PAE is between 58.7 %–78.0 % across a bandwidth of 1.5 GHz–2.75 GHz (60 % bandwidth). A linearity measurement was done by sweeping the drain supply voltage, gate bias voltage and injecting a WCDMA drive signal to find the best linearity without affecting the performance. A linearity of −36 dBc at 8.5 dB back-off power from the 3 dB compression point of Pout was found at 2.15 GHz.