|
|
| 基于电容补偿结构的5~13GHz无源衰减器设计 |
| Design Of A 5~13GHz Passive Attenuator With Optimized Capacitive Compensation |
| 投稿时间:2026-08-26 修订日期:2026-09-23 |
| DOI: |
| 中文关键词: 电容补偿 无源衰减器 低附加相移 CMOS |
| English Keywords:Capacitive Compensation Passive Attenuator Low phase variation CMOS |
| 基金项目:国家重点研发计划(2023YFB4403900) |
|
| 摘要点击次数: 5 |
| 全文下载次数: 0 |
| 中文摘要: |
| 基于SMIC 55nm CMOS工艺,设计了一种工作在5~13GHz的宽频带无源衰减器。衰减器采用开关内嵌式结构,通过设计带有补偿电容的简化T型(Simple-T型)和桥T型(Bridge-T)衰减单元,有效抑制工作频段内的幅度误差与附加相移。测试结果表明,在1.2V电源电压下,衰减器的衰减范围为0~15.5dB,步进为0.5dB;射频输入信号频率为5~13GHz,输入1dB压缩点为13.6dBm,最大插入损耗为5.2dB,幅度误差方均根(rms)为0.23dB,附加相移最大值不超过±3.7°,整体版图面积为0.085mm2, 在宽频范围内兼具良好的幅度精度与相位一致性,可满足宽带射频前端的应用需求。 |
| English Summary: |
| A wideband passive attenuator operating from 5 to 13 GHz is designed and implemented in a SMIC 55-nm CMOS process. The attenuator employs a switched-type topology and incorporates Simple-T and Bridge-T attenuation cells with capacitive compensation to effectively suppress amplitude errors and phase variations over the operating frequency range. Measurement results show that, under a 1.2 V supply voltage, the attenuator achieves an attenuation range of 0~15.5 dB with a 0.5 dB step. Over the 5~13 GHz frequency range, the measured input 1 dB compression point is 13.6 dBm, the maximum insertion loss is 5.2 dB, the rms amplitude error is 0.23 dB, the maximum phase variation is within ±3.7°. The attenuator occupies a core area of 0.085 mm2. With high amplitude accuracy and low phase variation over a wide frequency range, the proposed attenuator is suitable for wideband RF front-end applications. |
| 查看/发表评论 下载PDF阅读器 |
|
|
|
|
您是第18305614位访问者 今日共有
1926访问者 版权所有:北京理工大学学术期刊办公室
主管单位:中华人民共和国工业和信息化部 主办单位:北京理工大学 地址:北京海淀区中关村南大街5号
技术支持:北京勤云科技发展有限公司
|