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星載L波段寬帶高增益圓極化微帶天線設(shè)計
2022年電子技術(shù)應(yīng)用第1期
隋 濤,邢斯瑞,孫 偉,安向東
長光衛(wèi)星技術(shù)有限公司,吉林 長春130000
摘要: 針對衛(wèi)星L波段通信轉(zhuǎn)發(fā)系統(tǒng)的要求,設(shè)計了一種新型星載L波段寬帶高增益圓極化微帶天線。微帶天線整體采用側(cè)饋的饋電方式,采用H型縫隙耦合饋電方式以實現(xiàn)寬頻帶,采用威爾金森移相功分器實現(xiàn)兩信號間相位差來滿足圓極化,增加天線背部反射板和板間泡沫層以提高增益并穩(wěn)固結(jié)構(gòu)。通過電磁仿真軟件分析可得:在中心頻點(diǎn)1.45 GHz處增益為8.3 dBi,軸比為0.7 dB,增益大于7.5 dBi且回波損耗小于-10 dB時相對帶寬為23.5%。天線加工實測結(jié)果與仿真結(jié)果基本一致,對L波段無線通信系統(tǒng)設(shè)計有一定指導(dǎo)意義。
中圖分類號: TN82
文獻(xiàn)標(biāo)識碼: A
DOI:10.16157/j.issn.0258-7998.212186
中文引用格式: 隋濤,邢斯瑞,孫偉,等. 星載L波段寬帶高增益圓極化微帶天線設(shè)計[J].電子技術(shù)應(yīng)用,2022,48(1):138-141,151.
英文引用格式: Sui Tao,Xing Sirui,Sun Wei,et al. Design of L-band wideband high-gain circularly-polarized microstrip antenna for satellite communication system[J]. Application of Electronic Technique,2022,48(1):138-141,151.
Design of L-band wideband high-gain circularly-polarized microstrip antenna for satellite communication system
Sui Tao,Xing Sirui,Sun Wei,An Xiangdong
Chang Guang Satellite Technology Co.,Ltd.,Changchun 130000,China
Abstract: In response to the requirements of satellite L-band communication and forwarding systems, a novel type of satellite-borne L-band broadband high-gain circularly polarized microstrip antenna is designed. The microstrip antenna adopts a side-fed feeding method as a whole, adopts an H-shaped slot coupling feeding method to achieve a wide frequency band, and uses a Wilkinson phase shift power splitter to achieve the phase difference between the two signals to meet the circular polarization, and add the antenna back reflector and foam layer between the boards to increase gain and stabilize the structure. Through the analysis of electromagnetic simulation software, it can be obtained that the gain is 8.3 dBi at the center frequency point of 1.45 GHz, the axial ratio is 0.7 dB, the relative bandwidth is 23.5% when the gain is greater than 7.5 dBi and the return loss is less than -10 dB. The actual measurement results of the antenna processing are basically consistent with the simulation results, which have certain guiding significance for the design of the L-band wireless communication system.
Key words : slot-coupled feed;wideband;high-gain;circularly-polarized;microstrip antenna

0 引言

    隨著科技的不斷進(jìn)步,無線通信領(lǐng)域已經(jīng)在衛(wèi)星制造中占據(jù)了無可取代的位置。其中,衛(wèi)星互聯(lián)網(wǎng)概念的提出[1-2]使得通信衛(wèi)星在近幾年正在飛速發(fā)展,而天線作為無線通信中關(guān)鍵的一環(huán),其設(shè)計滿足系統(tǒng)的優(yōu)良性能及功能顯得格外關(guān)鍵[3-6]。本文依托吉林一號衛(wèi)星網(wǎng)絡(luò),提出了一款星載L波段寬帶高增益圓極化微帶天線,可以作為低頻段通信轉(zhuǎn)發(fā)載荷的一部分,以完成衛(wèi)星通信信號無線傳輸?shù)娜蝿?wù)。

    為了在微帶天線中實現(xiàn)低頻段大帶寬,前人已經(jīng)做了大量工作,例如:文獻(xiàn)[7]中設(shè)計了一種雙層矩形貼片的層疊結(jié)構(gòu)以展開天線帶寬,阻抗相對帶寬達(dá)到10%,頻帶內(nèi)增益大于6 dB;文獻(xiàn)[8]中設(shè)計了一款用于全球定位系統(tǒng)的圓極化微帶天線,采用電容耦合探針饋電增加阻抗帶寬,采用共面寄生貼片提高圓極化帶寬,峰值增益達(dá)到8 dBi;文獻(xiàn)[9]中設(shè)計了一種4段扇形天線組成的采用一分四功率分配器芯片實現(xiàn)寬帶圓極化的天線,并采用電磁帶隙結(jié)構(gòu)作為高阻抗表面以實現(xiàn)天線能量定向輻射;文獻(xiàn)[10]中設(shè)計了一款環(huán)形槽縫隙耦合饋電的雙層微帶天線,實現(xiàn)了17.6%的駐波相對帶寬,且?guī)拑?nèi)增益大于7.2 dBi。除此之外,還有人采用電磁超材料或法布里-珀羅諧振腔設(shè)計以提高帶寬[11-12]




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作者信息:

隋  濤,邢斯瑞,孫  偉,安向東

(長光衛(wèi)星技術(shù)有限公司,吉林 長春130000)




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