Discrete-level envelope tracking for broadband noise-like signals
Discrete-level envelope tracking for broadband noise-like signals
复制标题
宽带类噪声信号的离散级包络跟踪
DOI：
10.1109/mwsym.2017.8059042
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Z. Popovic
中科院分区：
文献类型：
--
作者：
G. Lasser;M. Duffy;J. Vance;Z. Popovic
在本文中，我们研究了离散电平电源调制的X波段MMIC GaN PA的高带宽信号，统计上类似于带限高斯噪声。4-和8级跟踪比较各种转换速率和非线性NPR的监测。两个信号带宽，100和250 MHz的PAPR为11 dB和平均PA输出功率约35 dBm的检查。对于250 MHz信号，8电平跟踪，压摆率为1 V/ns，在9.8 GHz下测得PAE为40.1%，而对于固定的20 V漏极电压，PAE为26.2%。
In this paper we study discrete level supply modulation of an X-band MMIC GaN PA for high-bandwidth signals which statistically resemble band-limited Gaussian noise. 4- and 8-level tracking is compared for various slew rates and the non-linearized NPR is monitored. Two signal bandwidths, 100 and 250 MHz are examined with PAPR of 11 dB and an average PA output power of around 35 dBm. For the 250 MHz signal with 8-level tracking at a slew rate of 1 V/ns a PAE of 40.1 % is measured at 9.8 GHz, compared to 26.2 %, for a fixed 20 V drain voItage.