High Efficiency Distributed Amplifier Using Optimum Transmission Line

2007 European Conference on Wireless Technologies Pub Date : 2007-12-17 DOI:10.1109/ECWT.2007.4404023

Sigyun Jeong, Heungjae Choi, Y. Jeong, J. Kenney, C. Kim

引用次数: 3

Abstract

In this paper, we performed numerical analysis on reversed current of distributed amplifier (DA) based on transmission line theory and proposed optimum transmission line (OTL) to cancel reversed currents. This OTL has improved electrical performances of DA. The distributed amplifier using optimum transmission line (DAOTL) has been implemented with pHEMT transistor. Due to high capacitance of pHEMT, cutoff frequency is decided to 3.6 GHz. As a result of measurement, we could obtain maximum gain of 14.5 dB and minimum gain of 12.8 dB inner operation band. Moreover, we could PAE of 25.6% which is higher about 7.6% than the conventional DA (CDA) at 3 GHz. The output power was obtained 10.9 dBm which is higher about 1.7 dB than the conventional at 3 GHz.

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采用最佳传输线的高效分布式放大器

本文基于传输线理论对分布式放大器(DA)的反向电流进行了数值分析，提出了消除反向电流的最佳传输线(OTL)。该OTL提高了数据处理的电学性能。采用pHEMT晶体管实现了最佳传输线分布式放大器(DAOTL)。由于pHEMT的高电容，决定截止频率为3.6 GHz。测量结果表明，工作频带内最大增益为14.5 dB，最小增益为12.8 dB。此外，在3ghz下，我们可以达到25.6%的PAE，比传统的DA (CDA)高7.6%左右。在3ghz时，得到的输出功率为10.9 dBm，比传统的输出功率高约1.7 dB。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2007 European Conference on Wireless Technologies

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