一种小型化超宽带同轴巴伦的设计与实现

张新林; 郗松岳; 姜博; 陈鹏; 黄星; 路宏敏

doi:10.11884/HPLPB202436.240090

一种小型化超宽带同轴巴伦的设计与实现

doi: 10.11884/HPLPB202436.240090

张新林^1,,
郗松岳²,
姜博¹,
陈鹏^{1, 3},
黄星¹,
路宏敏^1, ,

1.
西安电子科技大学电子工程学院，西安 710071
2.
西安西测测试技术股份有限公司，西安 710065
3.
西北核技术研究所，西安 710024

基金项目: 国防基础科研项目(MKF20230377)

详细信息

作者简介:
张新林，21021210813@stu.xidian.edu.cn

通讯作者:
路宏敏，hmlu@mail.xidian.edu.cn。

中图分类号: TN81
计量
- 文章访问数: 204
- HTML全文浏览量: 92
- PDF下载量: 43
- 被引次数: 0
出版历程
- 收稿日期: 2024-03-12
- 修回日期: 2024-05-22
- 录用日期: 2024-05-22
- 网络出版日期: 2024-05-27
- 刊出日期: 2024-07-04

Design and implementation of a miniaturised ultra-wideband coaxial balun

Zhang Xinlin^1
,,
Xi Songyue²,
Jiang Bo¹,
Chen Peng^{1, 3},
Huang Xing¹,
Lu Hongmin^{1
, ,}

1.
School of Electronic Engineering, Xidian University, Xi’an 710071, China
2.
Xi’an XICE Test Technology Co. Ltd., Xi’an 710065, China
3.
Northwest Institute of Nuclear Technology, Xi’an 710024, China

摘要

摘要: 集总参数巴伦尺寸小且易集成，但其不能承受较大功率，且频带较窄；分布参数类同轴巴伦因其具有宽频带、低损耗、大功率容量等特点，目前被广泛应用于大功率辐照天线的差分馈电与阻抗匹配的设计中。针对某试验系统对宽频带大功率辐照天线的工程应用需求，基于非整数阻抗变化比的同轴巴伦设计方法，设计与实现了一款加载铁氧体磁环的阻抗变换比1∶2.25的同轴巴伦。仿真结果与实测结果表明，该巴伦频带为0.01～1.30 GHz，巴伦相位不平衡度在180°±5°以内，幅度不平衡度在±1 dB以内，两路插损均小于1.5 dB。仿真分析了巴伦在500 W功率馈电下的电性能，验证了其功率容量。
- 同轴巴伦 /
- 超宽带 /
- 大功率 /
- 铁氧体磁环 /
- 平衡电路
Abstract: Baluns with lumped parameters are compact and easily integrated, but they have limitations in terms of power handling and bandwidth. On the other hand, baluns with distributed parameters, such as coaxial baluns, are extensively utilized in the design of high-power irradiation antennas for differential feeding and impedance matching, owing to their wide bandwidth, low loss, and high power capacity. To address the engineering requirements of wideband high-power irradiation antennas in a specific experimental system, a coaxial balun with an impedance transformation ratio of 1∶2.25 loaded with a ferrite magnetic ring is designed and realised based on the coaxial balun design method with any non-integer impedance transformation ratio. Simulation and measurement results demonstrate that the balun operates within the frequency range of 0.01−1.30 GHz, with a phase imbalance within ±5° of 180° and an amplitude imbalance within ±1 dB. The insertion losses of both paths are below 1.5 dB. The electrical performance of the balun at 500 W power feed is simulated and analysed to verify its power capacity.
- coaxial balun /
- ultra-wideband /
- high power /
- ferrite ring /
- balanced circuit

HTML全文

图 1 变压器电压比变换示意图

Figure 1. Transformer voltage ratio transformation diagram

下载: 全尺寸图片幻灯片

图 2 电压转换比为3∶2的变压器设计

Figure 2. Diagram of a transformer with a voltage transformation ratio of 3∶2

下载: 全尺寸图片幻灯片

图 3 1∶2.25巴伦电路结构图

Figure 3. Diagram of 1∶2.25 balun circuit structure

下载: 全尺寸图片幻灯片

图 4 铁氧体磁环磁导率随频率变化曲线图

Figure 4. Curve of ferrite toroid magnetic permeability variation with frequency

下载: 全尺寸图片幻灯片

图 5 巴伦尺寸图

Figure 5. Dimensions of the balun

下载: 全尺寸图片幻灯片

图 6 巴伦实物图

Figure 6. Photo of the balun

下载: 全尺寸图片幻灯片

图 7 巴伦输入端口驻波比仿真与实测结果

Figure 7. Simulation and measurement results of the balun’s input port VSWR

下载: 全尺寸图片幻灯片

图 8 相位与幅度不平衡度仿真与实测结果

Figure 8. Simulation and measurement results of phase and amplitude imbalance

下载: 全尺寸图片幻灯片

图 9 巴伦不同馈电功率下S参数对比

Figure 9. Comparison of S-parameters at different feed power in balun

下载: 全尺寸图片幻灯片

图 10 巴伦不同馈电功率下输出不平衡度对比

Figure 10. Comparison of output imbalance at different feed power in balun

下载: 全尺寸图片幻灯片

表 1 巴伦性能对比

Table 1. Comparison of balun performance

balun	frequency/GHz	dimensions	amplitude imbalance/dB	phase imbalance/(°)
Ref.[1]	0.003-0.35	21 mm×17 mm	±1	±2.5
Ref.[6]	0.10～1.60	87 mm×36 mm	±1	±5
Ref.[7]	0.05～1.24	110 mm×60 mm	±1.5	±5
this paper	0.01～1.30	98 mm×55 mm	±1	±5

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