This paper proposes a compact polarization microstrip antenna based on double-layer structure. The band- width of the whole antenna is widened by expanding the top and bottom layers respectively. After the design of a...This paper proposes a compact polarization microstrip antenna based on double-layer structure. The band- width of the whole antenna is widened by expanding the top and bottom layers respectively. After the design of antenna structure and adjustment of size, the proposed antenna can achieve both the left- and right-hand circular polariza- tions in 2.33 GHz--2.97 GHz. Measurement results indicate that the effective bandwidth is 640 MHz in S-band and the relative bandwidth can achieve 24% with S, less than- 15 dB.展开更多
A single-layer design of non-uniform metasurface(MS)based circularly polarized(CP)antenna with wideband operation characteristic is proposed and investigated in this paper.The antenna is excited by a truncated corner ...A single-layer design of non-uniform metasurface(MS)based circularly polarized(CP)antenna with wideband operation characteristic is proposed and investigated in this paper.The antenna is excited by a truncated corner squared patch as a primary radiating CP source.Then,a non-uniform MS is placed in the same layer with the driven patch.Besides increasing the impedance bandwidth,the non-uniform MS also generates two additional CP bands in the high frequency band,leading to significantly increase the antenna’s overall performances.The use of non-uniform MS distinguishes our design from the other CP MS based antennas in literature,in which the MS is formed by multiple uniform unit cells and placed in different layer with the radiating element.For validation,an antenna prototype,whose overall dimensions of 0.94λ_(o)×0.94λ_(o)×0.06λ_(o) at the center operating frequency,is fabricated and experimentally tested.The measured operating bandwidth with|S11|≤−10 dB and AR≤3 dB is 27.1%(5.1–6.7 GHz)and the broadside gain within this band is from 5.7 to 7.2 dBic.Compared to the other related works,the proposed antenna has advantage of very wideband operation with single-layer design.展开更多
In order to overcome the narrow-bandwidth of the patch antenna, one kind of configuration which can widen the bandwidth significantly is discussed in this letter. Analyzed by the equivalent-circuits method and simulat...In order to overcome the narrow-bandwidth of the patch antenna, one kind of configuration which can widen the bandwidth significantly is discussed in this letter. Analyzed by the equivalent-circuits method and simulated by HFSS, a rule derived from simulated results that can aid to design the microstrip antennas is found. Finally, the structure parameters are optimized out, Which reaches 44.67% impedance bandwidth. Furthermore, this kind of configuration can also be applied to the multi-laver patch antenna.展开更多
提出了一种单点背馈的圆极化正方形环微带贴片天线。该天线的辐射贴片由一个正方形环和对角线上的一个L形枝节构成,介质基板为空气层或由FR4环氧树脂板和空气层组合而成的双层介质。通过调节枝节的宽度及枝节上馈电点位置可实现天线的...提出了一种单点背馈的圆极化正方形环微带贴片天线。该天线的辐射贴片由一个正方形环和对角线上的一个L形枝节构成,介质基板为空气层或由FR4环氧树脂板和空气层组合而成的双层介质。通过调节枝节的宽度及枝节上馈电点位置可实现天线的圆极化辐射。结果表明:介质厚度为0.049λ0(λ0为中心波长)时,天线的阻抗带宽大于6%,圆极化带宽为1.8%,最大增益可达8.7 d B,最小轴比小于0.5 d B。与普通的空气介质贴片天线相比,天线的贴片面积缩小了47%。展开更多
提出了一种基于非对称V型槽加载的探针馈电圆极化单层钻石形微带贴片天线。通过调节V型槽的槽宽、槽长、开槽倾角及馈电点位置可实现微带贴片天线的圆极化辐射。研究了V型槽尺寸对微带贴片天线性能的影响。结果表明:介质厚度为0.051λ_0...提出了一种基于非对称V型槽加载的探针馈电圆极化单层钻石形微带贴片天线。通过调节V型槽的槽宽、槽长、开槽倾角及馈电点位置可实现微带贴片天线的圆极化辐射。研究了V型槽尺寸对微带贴片天线性能的影响。结果表明:介质厚度为0.051λ_0(λ_0为中心工作波长)时,天线的阻抗带宽大于9%(VSWR≤2),圆极化带宽为3%(AR≤3),最大增益可达6.29 d Bi,最小轴比小于0.5 d B。展开更多
为了提高圆极化微带天线性能,提出一种新型圆极化微带天线结构,通过在三角形贴片上加载缝隙和枝节展宽圆极化带宽,天线总体尺寸为0.74λ0×0.88λ0×0.09λ0。HFSS仿真结果表明该天线阻抗带宽(回波损耗S11<-10 d B)9.6%,圆...为了提高圆极化微带天线性能,提出一种新型圆极化微带天线结构,通过在三角形贴片上加载缝隙和枝节展宽圆极化带宽,天线总体尺寸为0.74λ0×0.88λ0×0.09λ0。HFSS仿真结果表明该天线阻抗带宽(回波损耗S11<-10 d B)9.6%,圆极化带宽(轴比AR<3 d B)5.4%,轴比最小值0.23 d B,增益最大值8.11 d Bic。该天线的圆极化性能较好,在卫星导航和无线通信中具有很好的应用潜能。展开更多
基金Supported by National Basic Research Program of China ("973" Program,No.2007CB310605)
文摘This paper proposes a compact polarization microstrip antenna based on double-layer structure. The band- width of the whole antenna is widened by expanding the top and bottom layers respectively. After the design of antenna structure and adjustment of size, the proposed antenna can achieve both the left- and right-hand circular polariza- tions in 2.33 GHz--2.97 GHz. Measurement results indicate that the effective bandwidth is 640 MHz in S-band and the relative bandwidth can achieve 24% with S, less than- 15 dB.
文摘A single-layer design of non-uniform metasurface(MS)based circularly polarized(CP)antenna with wideband operation characteristic is proposed and investigated in this paper.The antenna is excited by a truncated corner squared patch as a primary radiating CP source.Then,a non-uniform MS is placed in the same layer with the driven patch.Besides increasing the impedance bandwidth,the non-uniform MS also generates two additional CP bands in the high frequency band,leading to significantly increase the antenna’s overall performances.The use of non-uniform MS distinguishes our design from the other CP MS based antennas in literature,in which the MS is formed by multiple uniform unit cells and placed in different layer with the radiating element.For validation,an antenna prototype,whose overall dimensions of 0.94λ_(o)×0.94λ_(o)×0.06λ_(o) at the center operating frequency,is fabricated and experimentally tested.The measured operating bandwidth with|S11|≤−10 dB and AR≤3 dB is 27.1%(5.1–6.7 GHz)and the broadside gain within this band is from 5.7 to 7.2 dBic.Compared to the other related works,the proposed antenna has advantage of very wideband operation with single-layer design.
文摘In order to overcome the narrow-bandwidth of the patch antenna, one kind of configuration which can widen the bandwidth significantly is discussed in this letter. Analyzed by the equivalent-circuits method and simulated by HFSS, a rule derived from simulated results that can aid to design the microstrip antennas is found. Finally, the structure parameters are optimized out, Which reaches 44.67% impedance bandwidth. Furthermore, this kind of configuration can also be applied to the multi-laver patch antenna.
文摘提出了一种单点背馈的圆极化正方形环微带贴片天线。该天线的辐射贴片由一个正方形环和对角线上的一个L形枝节构成,介质基板为空气层或由FR4环氧树脂板和空气层组合而成的双层介质。通过调节枝节的宽度及枝节上馈电点位置可实现天线的圆极化辐射。结果表明:介质厚度为0.049λ0(λ0为中心波长)时,天线的阻抗带宽大于6%,圆极化带宽为1.8%,最大增益可达8.7 d B,最小轴比小于0.5 d B。与普通的空气介质贴片天线相比,天线的贴片面积缩小了47%。
文摘提出了一种基于非对称V型槽加载的探针馈电圆极化单层钻石形微带贴片天线。通过调节V型槽的槽宽、槽长、开槽倾角及馈电点位置可实现微带贴片天线的圆极化辐射。研究了V型槽尺寸对微带贴片天线性能的影响。结果表明:介质厚度为0.051λ_0(λ_0为中心工作波长)时,天线的阻抗带宽大于9%(VSWR≤2),圆极化带宽为3%(AR≤3),最大增益可达6.29 d Bi,最小轴比小于0.5 d B。
文摘为了提高圆极化微带天线性能,提出一种新型圆极化微带天线结构,通过在三角形贴片上加载缝隙和枝节展宽圆极化带宽,天线总体尺寸为0.74λ0×0.88λ0×0.09λ0。HFSS仿真结果表明该天线阻抗带宽(回波损耗S11<-10 d B)9.6%,圆极化带宽(轴比AR<3 d B)5.4%,轴比最小值0.23 d B,增益最大值8.11 d Bic。该天线的圆极化性能较好,在卫星导航和无线通信中具有很好的应用潜能。
