《電子技術(shù)應(yīng)用》
您所在的位置:首頁 > 通信與網(wǎng)絡(luò) > 設(shè)計(jì)應(yīng)用 > 一種基于AOP模塊相控陣的星載三模寬帶圓極化天線
一種基于AOP模塊相控陣的星載三模寬帶圓極化天線
電子技術(shù)應(yīng)用
康湛毓,,賀連星,費(fèi)冬亮,,魏曉黎,,梁廣
上海微小衛(wèi)星工程中心
摘要: 設(shè)計(jì)了一種應(yīng)用于Ka頻段星載相控陣的低成本、寬覆蓋,、高可靠性的圓極化天線陣元,,該陣元通過BGA植球直接與射頻前端實(shí)現(xiàn)互連,具有差損小,、重量輕,、成本低的特點(diǎn),同時(shí)基于特征模分析,,通過單層微帶的超表面設(shè)計(jì)激勵(lì)起三模圓極化輻射有效地拓展了帶寬,,克服常規(guī)單層微帶天線帶寬窄的缺點(diǎn),降低太空高低溫環(huán)境下天線分層失效的風(fēng)險(xiǎn),,解決現(xiàn)有星載毫米波相控陣陣元低剖面,、寬帶工作問題。以4個(gè)該陣元為一組2×2順序旋組陣,,進(jìn)一步拓展了陣列天線的工作帶寬和軸比帶寬,,實(shí)測了掃描±50°在28~31 GHz軸比小于3 dB,增益曲線隨頻率保持不變,,非常適合在星載Ka頻段通信系統(tǒng)應(yīng)用,。
中圖分類號(hào):TN82 文獻(xiàn)標(biāo)志碼:A DOI: 10.16157/j.issn.0258-7998.234493
中文引用格式: 康湛毓,賀連星,,費(fèi)冬亮,,等. 一種基于AOP模塊相控陣的星載三模寬帶圓極化天線[J]. 電子技術(shù)應(yīng)用,2024,,50(7):114-117.
英文引用格式: Kang Zhanyu,,He Lianxing,,F(xiàn)ei Dongliang,et al. Design of a triple-mode wideband circularly polarized antenna based on AOP technology for satellite communication system[J]. Application of Electronic Technique,,2024,,50(7):114-117.
Design of a triple-mode wideband circularly polarized antenna based on AOP technology for satellite communication system
Kang Zhanyu,He Lianxing,,F(xiàn)ei Dongliang,,Wei Xiaoli,Liang Guang
Shanghai Engineering Center for Microsatellites
Abstract: In this paper, a low-cost, wide-coverage and high-reliability circularly polarized antenna based on AOP (antenna on package) technology for Ka-band phased array application is designed. It interconnects with the RF front end by BGA planting ball directly, which has the characteristics of small loss, light weight and low cost. Meantime it overcomes the shortcomings of narrow bandwidth of conventional single-layer microstrip antenna by proposing metasurface-designing,, which successfully exhibit three modes circular polarization using characteristic mode analysis, as well as reduces the risk of antenna layering failure during high and low temperature in space, resolves the problems of low profile and broad bandwidth of existing satellite phased antennas. Taking four antenna elements as a unit with 2×2 sequential rotation to broad working bandwidth and axial ratio bandwidth. The measured results show that the axial ratios are less than 3 dB from 28 GHz to 31 GHz with 50 degrees scanning angle, and the measured gains remain stable in working band, which are very suitable for Ka-band communication application of satellite system.
Key words : AOP technology,;satellite phased array;broad bandwidth and circularly polarization,;characteristic mode analysis

引言

隨著衛(wèi)星批量化制造成本的降低以及衛(wèi)星運(yùn)載技術(shù)的發(fā)展,,衛(wèi)星互聯(lián)網(wǎng)通信已經(jīng)成為國際航天領(lǐng)域研究熱點(diǎn),我國也將衛(wèi)星互聯(lián)網(wǎng)納入“十四五”新基建中,。相比傳統(tǒng)的單個(gè)衛(wèi)星,,高容積比的衛(wèi)星互聯(lián)網(wǎng)星座更加復(fù)雜,對(duì)星載相控陣提出了更高的技術(shù)要求,。

首先,,隨著衛(wèi)星微型化發(fā)展和空間資源的急劇減少,嚴(yán)苛限制了星載天線的包絡(luò)尺寸以及重量,。平板相控陣天線由于具有極低的剖面特性非常適用于衛(wèi)星通信應(yīng)用。但是星載平板相控陣陣元目前主流通過同軸電纜,、SMP,、SMA等傳統(tǒng)類型連接器和毫米波前端實(shí)現(xiàn)電氣互連,具有體積大,、重量大,、差損大等缺點(diǎn)。

其次,,為滿足衛(wèi)星通信的寬帶通信容量需要,,要求相控陣陣元具有較寬的工作帶寬。常見的寬帶及超寬帶天線形式主要包括Vivaid天線[1-3],、“十字”振子[4-6],、波導(dǎo)背腔天線[7-9]及多層微帶天線[10-13]等。所列舉的前三類天線尺寸包絡(luò)較高,、重量較大,、結(jié)構(gòu)復(fù)雜、批量加工一致性較差,,難以滿足互聯(lián)網(wǎng)衛(wèi)星星座應(yīng)用低剖面,、輕重量及高緊湊性的要求,也難以與當(dāng)前先進(jìn)的高密度集成封裝天線(Antena-on-Package, AOP)技術(shù)兼容。文獻(xiàn)[10-14]通過縫隙耦合的多層介質(zhì)實(shí)現(xiàn)寬帶,,但是往往帶有復(fù)雜的饋電網(wǎng)絡(luò)和結(jié)構(gòu),,且其在星載高低溫交變(常規(guī)±90°)的環(huán)境下時(shí),面臨因多層介質(zhì)和中間粘接層的膨脹系數(shù)不一致導(dǎo)致分層失效的巨大風(fēng)險(xiǎn),。單層微帶天線[15-16]相對(duì)多層微帶天線在惡劣的太空環(huán)境中具有更高的可靠性,,但是其工作帶寬和3 dB軸比帶寬通常較窄,難以滿足衛(wèi)星寬帶通信的需求,。

針對(duì)上述難點(diǎn),,本文設(shè)計(jì)了一種應(yīng)用于Ka星載相控陣的低成本、寬覆蓋,、高可靠性的圓極化單層微帶天線陣元,。該陣元通過BGA植球直接與射頻前端實(shí)現(xiàn)互連,具有差損小,、重量輕,、成本低的特點(diǎn),同時(shí)采用單層微帶的超表面設(shè)計(jì)實(shí)現(xiàn)寬帶內(nèi)多個(gè)模式的激勵(lì),,突破了常規(guī)單層微帶天線帶寬窄的缺點(diǎn),,降低太空高低溫環(huán)境下天線分層失效的風(fēng)險(xiǎn),解決現(xiàn)有星載毫米波相控陣陣元低剖面,、寬帶工作問題,。


本文詳細(xì)內(nèi)容請(qǐng)下載:

http://forexkbc.com/resource/share/2000006082


作者信息:

康湛毓,賀連星,,費(fèi)冬亮,,魏曉黎,梁廣

(上海微小衛(wèi)星工程中心,,上海 201304)


Magazine.Subscription.jpg

此內(nèi)容為AET網(wǎng)站原創(chuàng),,未經(jīng)授權(quán)禁止轉(zhuǎn)載。