一種基于天牛須算法的新型超寬帶功分器研究
doi: 10.11999/JEIT181003
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1.
中國科學(xué)院微電子研究所 北京 100029
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2.
中國科學(xué)院大學(xué) 北京 100049
Research on the Novel Ultra-wideband Power Divider Based on Beetle Antennae Search Algorithm
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1.
Institute of Microelectronics of Chinese Academy of Sciences, Beijing 100029, China
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2.
University of Chinese Academy of Sciences, Beijing 100049, China
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摘要:
根據(jù)對(duì)馬刺線的原理分析,該文提出一種新型馬刺線結(jié)構(gòu),并在此基礎(chǔ)上設(shè)計(jì)出一種新穎的超寬帶功分器(頻率范圍為2.5~13.2 GHz)。該超寬帶功分器尺寸較小,制作結(jié)構(gòu)簡單,帶內(nèi)傳輸特性好,輸入與輸出端口的回波損耗均小于–12 dB,帶內(nèi)插入損耗小于3.5 dB。在設(shè)計(jì)過程中,根據(jù)理想傳輸線模型,利用奇偶模分析方法,推導(dǎo)出設(shè)計(jì)的目標(biāo)函數(shù),并利用天牛須算法對(duì)其進(jìn)行優(yōu)化設(shè)計(jì),有效提高了功分器的設(shè)計(jì)準(zhǔn)確性和靈活性。為了驗(yàn)證設(shè)計(jì)的準(zhǔn)確性,采用材料RO4003C作為基板設(shè)計(jì)超寬帶功分器。實(shí)驗(yàn)結(jié)果表明,采用新型馬刺線結(jié)構(gòu)的超寬帶功分器結(jié)合天牛須算法有效縮短了計(jì)算時(shí)間,提高了設(shè)計(jì)精度,可以廣泛運(yùn)用于超寬帶功分器設(shè)計(jì)。
Abstract:Based on the study of the spur-line, a novel spurs-line structure is proposed. The design of a novel Ultra-WideBand (UWB) power divider is described based on the novel spur line structure for the 2.5~13.2 GHz frequency range. The designed device is compact and has a simple structure and good frequency response in the band. Its return loss insertion is less than –12 dB and its insertion loss is less than 3.5 dB. The equations used for the design are based on the concept of odd-even modes and transmission line analysis. The Beetle Antennae Search (BAS) algorithm is used to improve the efficiency and accuracy of the power divider design. In order to verify the accuracy of the design, a UWB power divider is designed by using material RO4003C as substrate. The results validate the feasibility of the spur line-based design and demonstrat that the BAS algorithm has a shortened running time and improved precision compared to other optimization methods. It can be widely used in UWB power divider design.
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Key words:
- UWB power divider /
- Spur-line /
- Beetle Antenna Search(BAS)
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表 1 優(yōu)化參數(shù)前后結(jié)果對(duì)比
最優(yōu)值(dB) ${S_{11}}$ ${S_{22}}/{S_{11}}$ ${S_{23}}/{S_{32}}$ ${S_{21}}/{S_{31}}$ 沒有采用優(yōu)化算法 $ - 20$ $ - 29$ $ - 29$ $ - 3.2$ 采用天牛須算法 $ - 40$ $ - 50$ $ - 40$ $ - 3.1$ 下載: 導(dǎo)出CSV
表 2 功分器性能對(duì)比
參考文獻(xiàn) 拓?fù)浣Y(jié)構(gòu) 復(fù)雜度 尺寸(cm$ \times $cm) 插入損耗(dB) 15 dB 隔離度(比值,(BW, GHz)) 隔離電阻數(shù)量 文獻(xiàn)[1] CPD 低 3.0$ \times $1.0 3.5 3.00:1 (3.5–10.5) 1 文獻(xiàn)[2] 多模諧振 低 3.0$ \times $2.0 5.0 2.90:1 (4.0–11.7) 1 文獻(xiàn)[5] 級(jí)聯(lián) 低 3.3$ \times $2.3 4.0 6.00:1 (2.0–12.0) 5 文獻(xiàn)[6] SIR 低 3.0$ \times $2.0 5.0 – 1 文獻(xiàn)[7] 非共面 高 4.0$ \times $4.0 4.0 – 1 文獻(xiàn)[9] Radial Stub 低 2.0$ \times $1.5 3.8 1.50:1 (7.1–10.6) 1 文獻(xiàn)[10] 耦合振蕩 低 4.0$ \times $1.2 3.7 隔離度均大于–15 dB 1 本文 馬刺線級(jí)聯(lián) 低 1.4$ \times $1.5 <3.5 2.67:1 (4.5–12.0) 1 下載: 導(dǎo)出CSV
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