| 双频带可重构功率放大器设计 |
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| 引用本文： | 冀常鹏,张凯威,南敬昌.双频带可重构功率放大器设计[J].电波科学学报,2022,37(4):726-732. |
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| 作者姓名： | 冀常鹏 张凯威 南敬昌 |
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| 作者单位： | 辽宁工程技术大学电子与信息工程学院, 葫芦岛 125105 |
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| 基金项目： | 国家自然科学基金(61971210)；辽宁省特聘教授项目(551710007004) |
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| 摘 要： | 为解决5G无线通信系统中频谱资源日益紧张的问题，提出了一种新颖的双频带可重构电路结构. 该结构在输出匹配上使用PIN开关控制支路的工作状态，可完成不同工作波段的切换. 首先，基于宽带滤波器理论设计了输入匹配，实现了1.5~4.5 GHz的良好匹配；然后使用LC谐振理论和π等效，将集总电路转化为分布电路，优化了电路在高频处的性能；最后，设计并制作了一种部分覆盖L、S和C波段的可重构功率放大器. 测试结果表明:在1.50~2.85 GHz时输出功率大于39.5 dBm，功率附加效率（power added efficiency，PAE）大于39.5%；在3.15~4.50 GHz输出功率大于38.1 dBm，PAE大于43.5%. 测试结果满足设计要求，验证了理论的正确性. 该结构综合了可重构和宽带技术的优点，对无线通信系统未来的发展有着重要的意义.
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| 关 键 词： | 功率放大器 双频带 宽带匹配电路 可重构 ADS仿真 |
| 收稿时间： | 2021-08-06 |
Design of dual-band reconfigurable power amplifier |
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| Affiliation: | School of Electronics and Information Engineering, Liaoning Technical University, Huludao 125105, China |
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| Abstract: | In order to solve the problem of increasingly tight spectrum resources in the 5G wireless communication system, a novel dual-band reconfigurable circuit structure is proposed. This structure uses PIN switchs to control the working state of the branch in the output matching, and completes the switching of different working bands. Then, the input matching is designed based on the wideband filter theory, and a good matching within 1.5?4.5 GHz is achieved. Using the LC resonance theory and π equivalent, the lumped circuit is converted into a distributed circuit so that the circuit is optimized at high frequency. A reconfigurable power amplifier which partly covers the L, S and C bands is designed and manufactured. The test results show that output power is greater than 39.5 dBm and PAE is higher than 39.5% at 1.50?2.85 GHz, output power is greater than 38.1 dBm and PAE is greater than 43.5% at 3.15?4.50 GHz. The test results meet the design requirements and verify the correctness of the theory. This structure combines the advantages of reconfigurable and broadband technology which is of great significance to the future development of wireless communication systems. |
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