一种快速稳健的致密焦面阵列馈源设计方法

何山红; 纪萌茜; 解良玉; 范瑾; 范冲

doi:10.11999/JEIT190026

一种快速稳健的致密焦面阵列馈源设计方法

doi: 10.11999/JEIT190026

1.
安徽工业大学电气与信息工程学院马鞍山 243002
2.
中国科学院国家天文台FAST项目组北京 100012
3.
南京理工大学通信工程系南京 210094

基金项目: 国家自然科学基金(U1631115, 11403054)，国家自然科学基金－中国科学院天文联合基金(U1631115)，国家自然科学基金与瑞典科研教育国际合作基金(11611130023)

详细信息

作者简介:
何山红：男，1973年生，教授，主要研究方向为大型反射面天线及馈源、阵列天线及宽带天线设计及研究

纪萌茜：女，1996年生，硕士生，研究方向为天线中的优化设计

解良玉：女，1996年生，硕士生，研究方向为宽带天线、多频天线和多波束天线设计

范瑾：女，1985年生，工程师，博士，研究方向为大型射电天文望远镜天线及高性能馈源设计及研究

范冲：男，1990年生，博士生，研究方向为周期性结构天线、透镜天线及反射面的设计及研究

通讯作者:
何山红　antennaeng@163.com

中图分类号: TN823
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- 被引次数: 12
出版历程
- 收稿日期: 2019-01-11
- 修回日期: 2019-04-18
- 网络出版日期: 2019-05-23
- 刊出日期: 2019-11-01

A Fast and Robust Design Method for Dense Focal Plane Array Feed

1.
School of Electrical Engineering & Information, Anhui University of Technology, Ma’anshan 243002, China
2.
Department of FAST in the National Astronomy Observatory, Chinese Academy of Sciences, Beijing 100012, China
3.
Department of Communication Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

Funds: The National Natural Science Foundation of China (U1631115, 11403054), The Joint Research Fund in Astronomy under Cooperative Agreement between the National Natural Science Foundation of China and Chinese Academy of Science(U1631115), The Swedish Foundation for International Cooperation with NSFC in Research and Higher Education (11611130023)

摘要

摘要: 致密焦面阵列馈源(DFPAF)融合了多喇叭多波束馈源和相控阵列馈源(PAF)的特点，与多喇叭多波束馈源和常规相控阵列馈源相比较，它可以同时提供更多的固定赋形波束进一步拓宽视场。在射电天文、雷达、电子侦察和卫星通信等领域引起了极大的关注。由于其阵列结构与常规阵列馈源不同，导致设计方法也具有特殊性，因此近年来展开了对其设计方法的研究。该文充分利用反射面天线的固有特性，并结合阵列天线理论，提出一种可以快速、稳健地设计致密焦面阵列馈源的方法，给出了设计原理和设计结果，并和最具代表性的多喇叭多波束馈源进行了性能对比分析，为设计致密焦面阵列馈电的大型反射面提供理论和数据参考。
- 致密焦面阵列 /
- 多波束馈源 /
- 反射面 /
- 相控阵列
Abstract: The Dense Focal Plane Array Feed (DFPAF), which integrates the characters of multi-beam feed with multiple independent horns and Phased Array Feed (PAF), can simultaneously provide more fixed shaped beams and wider field of view than multi-beam feed with multiple independent horns and PAF. It attracts more attention in radio telescope, radar, electronic reconnaissance, satellite communication and so on. Its unique structure promotes the studies on special design method recently. Combing the theory of array antenna and inherent characteristic of parabolic reflector antenna, a fast design method with robust processing procedure is proposed in this paper. The design principle, calculated results, and comparison between DFPAF and the most representative multi-beam feed with multiple independent horns are presented. All these provide a theoretical basis and reference data for the design of giant reflector with DFPAF.
- Dense focal plane array /
- Multi-beam feed /
- Reflector /
- Phased array

HTML全文

图 1 抛物面天线坐标系

下载: 全尺寸图片幻灯片

图 2 馈源结构

下载: 全尺寸图片幻灯片

图 3 中心频率的焦面电场分布

下载: 全尺寸图片幻灯片

图 4 中心频率的初级辐射方向图( $\varphi$ = 90°平面)

下载: 全尺寸图片幻灯片

图 5 抛物面天线在中心频率的远场辐射方向图( $\varphi$ =90°)

下载: 全尺寸图片幻灯片

图 6 50号波束中心频率的立体远场辐射方向图

下载: 全尺寸图片幻灯片

表 1 多波束反射面天线性能总结表

波束	馈源类型	天线增益(dB)	天线效率(%)	第1旁瓣电平(dB)	半功率波束宽度(°)	波束指向(°)	与中心波束的增益差(dB)
1号1.05 GHz	焦面场	75.08	74.00	–17.10	0.0596	0.000	0.00
	多喇叭多波束馈源	74.46	64.15	–24.10	0.0612	0.000	0.00
	致密焦面阵列馈源	74.98	72.32	–17.60	0.0606	0.000	0.00
5号1.05 GHz	焦面场	75.01	72.82	–16.40	0.0600	–0.045	–0.07
	多喇叭多波束馈源	74.38	62.97	–19.90	0.0616	–0.045	–0.08
	致密焦面阵列馈源	74.94	71.66	–16.10	0.0616	–0.045	–0.04
14号1.05 GHz	焦面场	74.92	71.32	–16.50	0.0599	–0.090	–0.16
	多喇叭多波束馈源	74.20	60.47	–17.60	0.0619	–0.090	–0.26
	致密焦面阵列馈源	74.74	68.43	–20.20	0.0622	–0.090	–0.24
29号1.05 GHz	焦面场	74.81	69.54	–16.40	0.0598	–0.140	–0.27
	多喇叭多波束馈源	74.00	57.70	–15.40	0.0622	–0.140	–0.46
	致密焦面阵列馈源	74.61	66.41	–17.10	0.0619	–0.140	–0.37
50号1.05 GHz	焦面场	74.58	65.95	–15.60	0.0617	–0.180	–0.50
	多喇叭多波束馈源	73.78	54.91	–13.50	0.0626	–0.185	–0.68
	致密焦面阵列馈源	74.42	63.57	–15.30	0.0626	–0.180	–0.56
1号1.25 GHz	焦面场	76.67	75.46	–16.90	0.0500	0.000	0.00
	多喇叭多波束馈源	76.18	67.29	–26.80	0.0527	0.000	0.00
	致密焦面阵列馈源	76.62	74.42	–19.10	0.0514	0.000	0.00
5号1.25 GHz	焦面场	76.57	73.66	–17.10	0.0500	–0.045	–0.10
	多喇叭多波束馈源	76.05	65.34	–21.50	0.0530	–0.045	–0.12
	致密焦面阵列馈源	76.55	73.36	–18.40	0.0519	–0.045	–0.06
14号1.25 GHz	焦面场	76.46	71.80	–16.20	0.0502	–0.090	–0.21
	多喇叭多波束馈源	75.84	62.31	–17.20	0.0542	–0.090	–0.33
	致密焦面阵列馈源	76.25	68.37	–18.60	0.0529	–0.090	–0.36
29号1.25 GHz	焦面场	76.33	69.67	–16.10	0.0505	–0.140	–0.34
	多喇叭多波束馈源	75.60	58.97	–15.00	0.0538	–0.140	–0.57
	致密焦面阵列馈源	76.20	67.66	–19.20	0.0526	–0.135	–0.41
50号1.25 GHz	焦面场	76.13	66.50	–15.70	0.0512	–0.180	–0.54
	多喇叭多波束馈源	75.29	54.86	–13.00	0.0548	–0.185	–0.88
	致密焦面阵列馈源	75.97	64.17	–15.80	0.0535	–0.185	–0.64
1号1.45 GHz	焦面场	78.06	77.07	–16.70	0.0426	0.000	0.00
	多喇叭多波束馈源	77.52	68.06	–30.60	0.0468	0.000	0.00
	致密焦面阵列馈源	78.01	76.19	–19.90	0.0440	0.000	0.00
5号1.45 GHz	焦面场	77.97	75.49	–16.60	0.0426	–0.045	–0.09
	多喇叭多波束馈源	77.39	66.05	–21.60	0.0470	–0.045	–0.13
	致密焦面阵列馈源	77.90	74.28	–18.80	0.0437	–0.045	–0.11
14号1.45 GHz	焦面场	77.85	73.43	–16.20	0.0427	–0.095	–0.21
	多喇叭多波束馈源	77.16	62.64	–17.20	0.0480	–0.095	–0.35
	致密焦面阵列馈源	77.64	69.96	–20.10	0.0456	–0.095	–0.37
29号1.45 GHz	焦面场	77.67	70.45	–16.50	0.0488	–0.140	–0.39
	多喇叭多波束馈源	76.86	58.46	–15.00	0.0486	–0.140	–0.65
	致密焦面阵列馈源	77.49	67.59	–17.50	0.0445	–0.140	–0.52
50号1.45 GHz	焦面场	77.43	66.66	–16.00	0.0439	–0.185	–0.63
	多喇叭多波束馈源	76.44	53.07	–12.80	0.0499	–0.185	–1.07
	致密焦面阵列馈源	77.22	63.52	–13.70	0.0465	–0.180	–0.79

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