基于基片集成波導(dǎo)饋電的Ka波段漸變縫隙天線設(shè)計

郝宏剛; 李江; 張婷; 阮巍

doi:10.11999/JEIT190218

基于基片集成波導(dǎo)饋電的Ka波段漸變縫隙天線設(shè)計

doi: 10.11999/JEIT190218

重慶郵電大學(xué)光電工程學(xué)院重慶 400065

基金項(xiàng)目: 重慶市自然科學(xué)基金(cstc2018jcyjAX0508)，重慶市教委科學(xué)技術(shù)研究項(xiàng)目(KJQN201800639)

詳細(xì)信息

作者簡介:
郝宏剛：男，1977年生，博士，教授，研究方向?yàn)樯漕l微波電路、電磁理論及應(yīng)用

李江：男，1995年生，碩士，研究方向?yàn)楸粍雍撩撞ǔ上裱芯?/p>
張婷：女，1995年生，碩士，研究方向?yàn)榫幋a超材料

阮巍：男，1982年生，碩士，講師，研究方向?yàn)殡姶艌雠c無線技術(shù)

通訊作者:
李江　s170401025@stu.cqupt.edu.cn

中圖分類號: TN823
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- PDF下載量: 150
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出版歷程
- 收稿日期: 2019-04-04
- 修回日期: 2019-08-02
- 網(wǎng)絡(luò)出版日期: 2019-08-28
- 刊出日期: 2020-03-19

Design of Ka-band Linear Tapered Slot Antennas Based on Substrate Integrated Waveguide Feed

College of Electronics Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

Funds: The Natural Science Foundation of Chongqing (cstc2018jcyjAX0508), The Science and Technology Research Program of Chongqing Municipal Education Commission (KJQN201800639)

摘要

摘要:
在被動毫米波 (PMMW) 成像焦平面陣列 (FPA) 饋源的天線中，直線漸變縫隙天線 (LTSA) 相對于傳統(tǒng)的喇叭天線、介質(zhì)棒天線具有其獨(dú)特的優(yōu)勢。該文優(yōu)化設(shè)計了一種新型的對跖直線漸變縫隙天線 (ALTSA)，通過加載超材料結(jié)構(gòu)使天線的增益得到了改善，天線采用基片集成波導(dǎo) (SIW) 技術(shù)進(jìn)行饋電。通過仿真與測試分析，該天線在較寬的頻帶內(nèi)具有良好的阻抗特性、較低的副瓣電平及較高且平穩(wěn)的增益，所設(shè)計的天線具有較小的口徑寬度，在焦平面中易于組成較為密集的饋源陣列，以提高被動毫米波成像的空間分辨率。
- 天線 /
- 被動毫米波成像 /
- 對跖直線漸變縫隙天線 /
- 基片集成波導(dǎo)
Abstract:
Linear Tapered Slot Antennas (TSA) have significant advantages over traditional horn antennas, dielectric rod antenna when used as feed elements in Focal Plane Arrays (FPA) of Passive MilliMeter Wave(PMMW) imaging. In this paper, a novel Antipodal Linear Tapered Slot Antenna(ALTSA) is designed and optimized. The proposed antenna, the gain of which is improved by loading metamaterial structure, is fed by the Substrate Integrated Waveguide(SIW). Simulation and measure analysis show that the good impedance characteristics, low sidelobe levels, high and smooth gain are all achieved in a wide frequency band. Meanwhile, the designed antenna has a smaller aperture width and is easier to form a denser feed array in the focal plane to improve the spatial resolution of passive millimeter wave imaging.
- Antenna /
- Passive MilliMeter Wave(PMMW) imaging /
- Antipodal Linear Tapered Slot Antenna(ALTSA) /
- Substrate Integrated Waveguide(SIW)

HTML全文

圖 1 基于SIW饋電的對跖直線漸變縫隙天線 W

下載: 全尺寸圖片幻燈片

圖 2 ALTSA結(jié)構(gòu)S₁₁及增益曲線

下載: 全尺寸圖片幻燈片

圖 3 天線輻射方向圖

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圖 4 超材料結(jié)構(gòu)及S參數(shù)曲線

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圖 5 加載超材料單元前后電場分布比較

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圖 6 加載超材料結(jié)構(gòu)天線仿真結(jié)果

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圖 7 天線測試

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圖 8 超材料加載天線仿真及實(shí)測S₁₁與增益曲線

下載: 全尺寸圖片幻燈片

圖 9 仿真與測試天線輻射方向圖

下載: 全尺寸圖片幻燈片

表 1 天線結(jié)構(gòu)尺寸(mm)

L L₁ L_m L_t W W_m W_t W_SIW

34 12 4 2.8 12 1.7 2.8 5
W_c W_d W₁ p d d₁ ${p_v}$ ${p_d}$
0.34 0.34 0.7 1 0.7 1.3 0.15 2

下載: 導(dǎo)出CSV

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