{"title":"基于紧密耦合交叉偶极子单元的新型宽带双极化发射阵列天线的设计与实现","authors":"Yong Heng Zhao, Yin Li, Li Jun Jiang, Ping Li","doi":"10.1049/mia2.12525","DOIUrl":null,"url":null,"abstract":"<p>A novel broadband dual-polarised transmitarray antenna (TA) utilising tightly coupled cross dipole cells is proposed in this work. The transmitarray cell using the tightly coupling wideband principle comprises two radiation patches designed as two orthogonal planar dipoles with four interdigital capacitors, two meandered parallel plate transmission lines, and a ground. Each cell has a square shape and a dimension of approximately 0.28 <span></span><math>\n <semantics>\n <mrow>\n <msub>\n <mi>λ</mi>\n <mi>c</mi>\n </msub>\n </mrow>\n <annotation> ${\\lambda }_{\\mathrm{c}}$</annotation>\n </semantics></math> where <span></span><math>\n <semantics>\n <mrow>\n <msub>\n <mi>λ</mi>\n <mi>c</mi>\n </msub>\n </mrow>\n <annotation> ${\\lambda }_{\\mathrm{c}}$</annotation>\n </semantics></math> is the wavelength at central frequency 5.5 GHz. The transmitarray cell can achieve 475° phase shift at central frequency and transmission magnitude better than −2.5 dB within the working band. To verify the feasibility of this design, a tightly coupled dual-polarised transmitarray antenna (TCDPTA) is modelled and manufactured. The transmitarray aperture size is approximately 4.1 <span></span><math>\n <semantics>\n <mrow>\n <msub>\n <mi>λ</mi>\n <mi>c</mi>\n </msub>\n </mrow>\n <annotation> ${\\lambda }_{\\mathrm{c}}$</annotation>\n </semantics></math> <span></span><math>\n <semantics>\n <mrow>\n <mo>×</mo>\n </mrow>\n <annotation> ${\\times} $</annotation>\n </semantics></math> 4.1 <span></span><math>\n <semantics>\n <mrow>\n <msub>\n <mi>λ</mi>\n <mi>c</mi>\n </msub>\n </mrow>\n <annotation> ${\\lambda }_{\\mathrm{c}}$</annotation>\n </semantics></math>. The simulation and measurement illustrate that the TCDPTA has stable and distortion-free main beams whose side lobe levels are generally below −10 dB in the band of 3.0–8.0 GHz. The measured gain at central frequency is 16.2 dBi and peak gain is 19 dBi at 7.5 GHz. The working bandwidth is 90.9% and 3 dB gain bandwidth is 66.7%. The measured cross-polarisation levels are below −15 dB at axial direction. This TA has potential applications for high-date-rate communication and high-revolution radar imaging systems at C-band.</p>","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"18 12","pages":"1011-1023"},"PeriodicalIF":1.1000,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.12525","citationCount":"0","resultStr":"{\"title\":\"Design and implementation of a novel wideband dual-polarised transmitarray antenna based on tightly coupled cross dipole cells\",\"authors\":\"Yong Heng Zhao, Yin Li, Li Jun Jiang, Ping Li\",\"doi\":\"10.1049/mia2.12525\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>A novel broadband dual-polarised transmitarray antenna (TA) utilising tightly coupled cross dipole cells is proposed in this work. The transmitarray cell using the tightly coupling wideband principle comprises two radiation patches designed as two orthogonal planar dipoles with four interdigital capacitors, two meandered parallel plate transmission lines, and a ground. Each cell has a square shape and a dimension of approximately 0.28 <span></span><math>\\n <semantics>\\n <mrow>\\n <msub>\\n <mi>λ</mi>\\n <mi>c</mi>\\n </msub>\\n </mrow>\\n <annotation> ${\\\\lambda }_{\\\\mathrm{c}}$</annotation>\\n </semantics></math> where <span></span><math>\\n <semantics>\\n <mrow>\\n <msub>\\n <mi>λ</mi>\\n <mi>c</mi>\\n </msub>\\n </mrow>\\n <annotation> ${\\\\lambda }_{\\\\mathrm{c}}$</annotation>\\n </semantics></math> is the wavelength at central frequency 5.5 GHz. The transmitarray cell can achieve 475° phase shift at central frequency and transmission magnitude better than −2.5 dB within the working band. To verify the feasibility of this design, a tightly coupled dual-polarised transmitarray antenna (TCDPTA) is modelled and manufactured. The transmitarray aperture size is approximately 4.1 <span></span><math>\\n <semantics>\\n <mrow>\\n <msub>\\n <mi>λ</mi>\\n <mi>c</mi>\\n </msub>\\n </mrow>\\n <annotation> ${\\\\lambda }_{\\\\mathrm{c}}$</annotation>\\n </semantics></math> <span></span><math>\\n <semantics>\\n <mrow>\\n <mo>×</mo>\\n </mrow>\\n <annotation> ${\\\\times} $</annotation>\\n </semantics></math> 4.1 <span></span><math>\\n <semantics>\\n <mrow>\\n <msub>\\n <mi>λ</mi>\\n <mi>c</mi>\\n </msub>\\n </mrow>\\n <annotation> ${\\\\lambda }_{\\\\mathrm{c}}$</annotation>\\n </semantics></math>. The simulation and measurement illustrate that the TCDPTA has stable and distortion-free main beams whose side lobe levels are generally below −10 dB in the band of 3.0–8.0 GHz. The measured gain at central frequency is 16.2 dBi and peak gain is 19 dBi at 7.5 GHz. The working bandwidth is 90.9% and 3 dB gain bandwidth is 66.7%. The measured cross-polarisation levels are below −15 dB at axial direction. 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引用次数: 0
摘要
本文提出了一种利用紧密耦合交叉偶极子单元的新型宽带双极化发射阵列天线(TA)。采用紧密耦合宽带原理的发射阵列单元包括两个设计成两个正交平面偶极子的辐射片,带有四个数字间电容,两条弯曲平行的平板传输线和一个地。每个单元具有正方形形状,尺寸约为0.28 λ c ${\lambda}_{\mathrm{c}}$,其中λ c ${\lambda}_{\mathrm{c}}$是波长中心频率5.5 GHz。发射阵列单元在中心频率可实现475°相移,在工作频带内传输幅度优于- 2.5 dB。为了验证该设计的可行性,对一个紧密耦合双极化发射阵列天线(TCDPTA)进行了建模和制造。透射阵列孔径大小约为4.1 λ c ${\lambda}_{\mathrm{c}}$ × ${\times} $ 4.1 λ c${\lambda}_{\ mathm {c}}$。仿真和测量结果表明,在3.0 ~ 8.0 GHz频段,TCDPTA具有稳定、无失真的主波束,其旁瓣电平一般在−10 dB以下。测量到的中心频率增益为16.2 dBi, 7.5 GHz时的峰值增益为19 dBi。工作带宽为90.9%,3db增益带宽为66.7%。在轴向测量的交叉极化电平低于−15 dB。该TA在c波段高数据速率通信和高转速雷达成像系统中具有潜在的应用前景。
Design and implementation of a novel wideband dual-polarised transmitarray antenna based on tightly coupled cross dipole cells
A novel broadband dual-polarised transmitarray antenna (TA) utilising tightly coupled cross dipole cells is proposed in this work. The transmitarray cell using the tightly coupling wideband principle comprises two radiation patches designed as two orthogonal planar dipoles with four interdigital capacitors, two meandered parallel plate transmission lines, and a ground. Each cell has a square shape and a dimension of approximately 0.28 where is the wavelength at central frequency 5.5 GHz. The transmitarray cell can achieve 475° phase shift at central frequency and transmission magnitude better than −2.5 dB within the working band. To verify the feasibility of this design, a tightly coupled dual-polarised transmitarray antenna (TCDPTA) is modelled and manufactured. The transmitarray aperture size is approximately 4.1 4.1 . The simulation and measurement illustrate that the TCDPTA has stable and distortion-free main beams whose side lobe levels are generally below −10 dB in the band of 3.0–8.0 GHz. The measured gain at central frequency is 16.2 dBi and peak gain is 19 dBi at 7.5 GHz. The working bandwidth is 90.9% and 3 dB gain bandwidth is 66.7%. The measured cross-polarisation levels are below −15 dB at axial direction. This TA has potential applications for high-date-rate communication and high-revolution radar imaging systems at C-band.
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