CN114256582B - 一种高功率低损耗宽带和差器 - Google Patents

一种高功率低损耗宽带和差器 Download PDF

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CN114256582B
CN114256582B CN202111561294.1A CN202111561294A CN114256582B CN 114256582 B CN114256582 B CN 114256582B CN 202111561294 A CN202111561294 A CN 202111561294A CN 114256582 B CN114256582 B CN 114256582B
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CN114256582A (zh
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巢峻
林维涛
奚松涛
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CETC 14 Research Institute
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/12—Coupling devices having more than two ports
    • H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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Abstract

在相控阵雷达中，和差器起着至关重要的作用。和差器的带宽、幅相一致性、耐功率、损耗及和差隔离度直接影响雷达的性能，如天线增益、接收零深、测角测距精度等。传统和差器有波导魔T，平面环形电桥，3dB180°耦合电桥等。波导魔T一般应用于较高频段，因为频段低的波导体积较大；平面环形电桥带宽约10%左右，带宽增加后边频的幅相一致性较差；180°环形电桥需要采用特定要求（耦合度）的耦合器级联而成，带宽能达到一个倍频程，多级的能够达到3个倍频程，但对板材要求和加工精度要求较高，实际成品效果并不理想，且损耗偏大。对于常规20%左右带宽的低频段和差器，上述形式的和差器或多或少存在一些弊端。本发明提出了一种高功率低损耗和差器，该和差器带宽在20%以上，易于实现且具有低损耗和耐高功率要求。

Description

一种高功率低损耗宽带和差器
技术领域
本发明属于天线与微波技术，具体涉及一种高功率低损耗宽带和差器。
背景技术
在相控阵雷达中，和差器起着至关重要的作用。和差器的带宽、幅相一致性、耐功率、损耗及和差隔离度直接影响雷达的性能，如天线增益、接收零深、测角测距精度等。
传统和差器有波导魔T，平面环形电桥，3dB180°耦合电桥等。波导魔T一般应用于较高频段，因为频段低的波导体积较大；平面环形电桥带宽约10%左右，带宽增加后边频的幅相一致性较差；180°环形电桥需要采用特定要求（耦合度）的耦合器级联而成，带宽能达到一个倍频程，多级的能够达到3个倍频程，但对板材要求和加工精度要求较高，实际成品效果并不理想，且损耗偏大。对于常规20%左右带宽的低频段和差器，上述形式的和差器或多或少存在一些弊端。
发明内容
为克服现有技术中的缺陷，本发明提出了一种和差器，该和差器带宽在20%以上，易于实现且具有低损耗和耐高功率要求。具体如下：。
将常规环形电桥的两段70.7欧姆阻抗线替代为3dB耦合电路。
进一步地，所述3dB耦合电路1/4λ长度为48mm，线宽4.29mm，宽边耦合偏心1.29mm。
本发明的有益效果在于：。
1. 相比于传统环形电桥带宽从10%增加到20%以上。
2.相比于3dB180°耦合电桥，损耗减小，耐功率提高，且易于实现。
3.相比于波导魔T，体积小。。
附图说明
图1为本发明和差器示意图。
图2为常规环形电桥示意图。
图3为和差器印制板部分电路尺寸。
图4为和差器仿真模型。
图5为和差器幅度仿真曲线。
图6为和差器相位仿真曲线。
具体实施方式
下面结合附图对本发明做进一步详细说明。
以设计一个L波段的悬浮带线和差器为例。
1、进行板材选择，假设选择的板材参数为：介电常数为2.94，板材厚度为0.508mm，悬浮带线总腔高10mm。
2、各部分电路长度和线宽确定：1/4λ长度为48mm，50Ω线宽14.19mm，70.7Ω线宽8.74mm，3dB耦合电路的线宽4.29mm，宽边耦合偏心1.29mm。
3、进行电路仿真优化和设计，最终设计电路图如图3所示，图4为仿真模型，图5为仿真幅度曲线，在1.2GHz到1.5GHz内幅度一致性达到±0.2dB，图6为相位一致性曲线，在1.2GHz到1.5GHz内相位一致性达到±3°。由曲线可知，该和差器在1.2GHz到1.5GHz频带内能够满足使用要求，带宽达到22%。
本发明不局限于上述具体的实施方式，本发明可以有各种更改和变化。凡是依据本发明的技术实质对以上实施方式所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围。

Claims (1)

1.一种高功率低损耗宽带和差器，其特征在于：包括第一输入端口、第二输入端口、和端口和差端口，第一输入端口与和端口、差端口均通过1/4λ长度3dB耦合电路连接，第二输入端口与和端口通过1/4λ长度阻抗线连接，与差端口通过3/4λ长度阻抗线连接；所述3dB耦合电路1/4λ长度为48mm，线宽4.29mm，宽边耦合偏心1.29mm；该和差器带宽在20%以上。
CN202111561294.1A 2021-12-20 2021-12-20 一种高功率低损耗宽带和差器 Active CN114256582B (zh)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100735159B1 (ko) * 2006-03-27 2007-07-06 이종철 고결합 특성을 갖는 수직 결합선로
CN208806350U (zh) * 2018-06-12 2019-04-30 航天恒星科技有限公司 一种单脉冲和差器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101728622B (zh) * 2010-01-07 2013-08-14 陈艳艳 宽频带环形电桥制备方法及实施该方法制备的电桥
CN204045707U (zh) * 2014-09-10 2014-12-24 四川九洲电器集团有限责任公司 新型和差器
CN204180029U (zh) * 2014-09-26 2015-02-25 安徽四创电子股份有限公司 一种x波段的和差网络电路及器件
CN109301419B (zh) * 2018-10-24 2020-11-27 北京无线电测量研究所 一种共面波导超宽带和差器

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100735159B1 (ko) * 2006-03-27 2007-07-06 이종철 고결합 특성을 갖는 수직 결합선로
CN208806350U (zh) * 2018-06-12 2019-04-30 航天恒星科技有限公司 一种单脉冲和差器

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