A Circularly Polarized Active Integrated Antenna Based on Switched Capacitor Power Amplifier

Guan Wei-heng; Pan Zhen-ming; Chen Si-yu; Li Yong-shi; Du Zhi-xia; Guo Chun-bing

doi:10.12052/gdutxb.240113

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A Circularly Polarized Active Integrated Antenna Based on Switched Capacitor Power Amplifier

更新时间：2026-05-27

- A Circularly Polarized Active Integrated Antenna Based on Switched Capacitor Power Amplifier
- Vol. 41, Issue 6, Pages: 33-38(2024)
- 作者机构：
  
  1. 广东工业大学集成电路学院,广东,广州,510006
  2. 广东工业大学物理与光电工程学院,广东,广州,510006
- 作者简介：
- 基金信息：
- DOI：10.12052/gdutxb.240113
  CLC： TN827.1
- Published：2024
- 稿件说明：
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官伟恒, 潘振明, 陈思宇, 李咏诗, 杜志侠, 郭春炳. 一种基于开关电容功率放大器的圆极化有源集成天线设计[J]. 广东工业大学学报, 2024, 41(6): 33-38.

Guan Wei-heng, Pan Zhen-ming, Chen Si-yu, et al. A Circularly Polarized Active Integrated Antenna Based on Switched Capacitor Power Amplifier[J]. 2024, 41(6): 33-38.
官伟恒, 潘振明, 陈思宇, 李咏诗, 杜志侠, 郭春炳. 一种基于开关电容功率放大器的圆极化有源集成天线设计[J]. 广东工业大学学报, 2024, 41(6): 33-38. DOI： 10.12052/gdutxb.240113.

Guan Wei-heng, Pan Zhen-ming, Chen Si-yu, et al. A Circularly Polarized Active Integrated Antenna Based on Switched Capacitor Power Amplifier[J]. 2024, 41(6): 33-38. DOI： 10.12052/gdutxb.240113.

摘要

针对现代无线通信系统日趋高性能的需求，设计了一种基于开关电容功率放大器(Switched Capacitor Power Amplifier

SCPA) 的圆极化有源集成发射天线。在有源集成发射天线中，天线不仅为开关电容功率放大器提供最佳负载阻抗，同时还对键合线引入的寄生电感进行补偿，进而减小了电路损耗，实现了紧凑的一体化设计。得益于天线提供的最佳负载阻抗，开关电容功率放大器芯片去除了输出匹配网络。芯片采用极性和正交复用的设计，在保持系统紧凑性的同时支持了更复杂的调制方式。平面缝隙天线在环形槽结构中引入一段细长枝节，使得环形槽结构的基膜分解为两个正交的简并谐振模，在同一频段中同时实现了右旋圆极化和左旋圆极化。实验结果表明，所设计的开关电容功率放大器频率为1.92 GHz，最大输出功率为10.25 dBm，有源集成天线在工作频率上的等效各向同性辐射功率(Equivalent Isotropic Radiated Power

EIRP)达到12.5 dBm。

Abstract

A circularly polarized active integrated transmitter antenna based on a switched capacitor power amplifier (SCPA) is designed to meet the increasing demand for high performance in modern wireless communication systems. In the active integrated transmitter antenna

the antenna not only provides the optimal load impedance for the SCPA

but also compensates for the parasitic inductance introduced by the bonding wires

reducing circuit losses and achieving a compact and integrated designing result. Due to the optimal load impedance provided by the antenna

the SCPA die removes the output matching network

and the die is designed with polar and quadrature multiplexing to support more complex modulation while maintaining system compactness. The planar slot antenna introduces a section of elongated stub in the annular slot structure so that the base mode of the annular slot structure is decomposed into two orthogonal degenerate resonant modes

and both right-hand circular polarization and left-hand circular polarization are achieved in the same frequency band. The experimental results show that the designed SCPA operates at 1.92 GHz with a maximum output power of 10.25 dBm. The equivalent isotropic radiated power (EIRP) of the active integrated antenna at the operating frequency reaches 12.5 dBm.

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references

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