| 南星伊,李新春,丛密芳,李 政,戴 涛,刘雨鑫.集成滤波特性的宽带滤波-功率放大器[J].电子测量与仪器学报,2023,37(9):51-59 |
| 集成滤波特性的宽带滤波-功率放大器 |
| Wideband filter-power amplifier with integrated filtering characteristics |
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| DOI： |
| 中文关键词: 宽频带 协同设计 滤波特性 平行耦合微带线 预匹配 |
| 英文关键词:wideband co-design filtering characteristic parallel coupled microstrip lines prematch |
| 基金项目:国家自然科学基金(61971210)、 企业合作项目资助 |
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| 中文摘要: |
| 为满足现代无线通信系统向宽频带、集成化、低成本和高性能方向发展的需求. 基于协同设计理论,利用自研的 RFLDMOS 器件设计了一款集成滤波特性的宽带滤波功率放大器。 设计“T 型”结构的预匹配网络以扩大晶体管阻抗值,同时集成
枝节负载耦合线构成宽带滤波网络。 连续波测试结果表明在 1. 2 ~ 2. 6 GHz 频带内饱和输出功率均大于 40 dBm, 漏极效率大
于 45%, 增益约为 11. 5 dB, 对二次谐波的抑制能力达到- 62 dBc。 当平均输出功率为 32. 5 dBm, ACPR 在频带内均优于
-37 dBc。 本设计使功放兼具放大和滤波的作用,提高电路集成度的同时相对带宽拓展到了 74%, 符合当今无线通信系统的
需求。 |
| 英文摘要: |
| In order to meet the needs of modern wireless communication systems to the direction of broadband, integration, low cost and
high performance. Based on the theory of collaborative design, a wideband filter power amplifier with integrated filtering characteristics is
designed by using the self-developed RF-LDMOS device. A “ T-type” prematching network is designed to enlarge the transistors
impedance and a wide-band filtering network is formed by integrating the load coupling microstrip lines. The continuous wave test results
show that in the frequency band of 1. 2~ 2. 6 GHz, the saturation output power is more than 40 dBm, the drain efficiency is greater than
45%, the power gain is about 11. 5 dB, and the second harmonic inhibition ability is - 62 dBc. When the average output power is
32. 5 dBm, ACPR is better than - 37 dBc in the range of frequency bands. In this design, the power amplifier has the function of
amplification and filtering, and the relative bandwidth is extended to 74% while the circuit integration is improved, which is in line with
the needs of today’s wireless communication system. |
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