无线电工程
無線電工程
무선전공정
Radio Engineering
2015年
10期
59-62
,共4页
超宽带%Vivaldi天线%相控阵
超寬帶%Vivaldi天線%相控陣
초관대%Vivaldi천선%상공진
UWB%Vivaldi antenna%phased array
为满足宽带相控阵天线宽带工作和宽角扫描的工程需求, 设计了一种介质板带状线形式的Vivaldi天线. 采用在天线谐振区域边缘加入金属隔离墙的方法, 有效去除天线单元工作频段内的谐振. 对3×8阵面中心位置的Vivaldi天线单元电气性能测试, 实测结果表明: 在3个倍频程带宽内实现VSWR<18, E面3 dB 波束宽度为低频95°、 中频80°、 高频40° , H面3 dB 波束宽度为低频 135°、 中频 78°、 高频 57° , 天线增益为低频增益62 dB、 中频增益77 dB、 高频增益96 dB, 试验结果满足设计要求.
為滿足寬帶相控陣天線寬帶工作和寬角掃描的工程需求, 設計瞭一種介質闆帶狀線形式的Vivaldi天線. 採用在天線諧振區域邊緣加入金屬隔離牆的方法, 有效去除天線單元工作頻段內的諧振. 對3×8陣麵中心位置的Vivaldi天線單元電氣性能測試, 實測結果錶明: 在3箇倍頻程帶寬內實現VSWR<18, E麵3 dB 波束寬度為低頻95°、 中頻80°、 高頻40° , H麵3 dB 波束寬度為低頻 135°、 中頻 78°、 高頻 57° , 天線增益為低頻增益62 dB、 中頻增益77 dB、 高頻增益96 dB, 試驗結果滿足設計要求.
위만족관대상공진천선관대공작화관각소묘적공정수구, 설계료일충개질판대상선형식적Vivaldi천선. 채용재천선해진구역변연가입금속격리장적방법, 유효거제천선단원공작빈단내적해진. 대3×8진면중심위치적Vivaldi천선단원전기성능측시, 실측결과표명: 재3개배빈정대관내실현VSWR<18, E면3 dB 파속관도위저빈95°、 중빈80°、 고빈40° , H면3 dB 파속관도위저빈 135°、 중빈 78°、 고빈 57° , 천선증익위저빈증익62 dB、 중빈증익77 dB、 고빈증익96 dB, 시험결과만족설계요구.
In order to achieve high bandwidth and wide-angle scanning of wideband phased array antenna,a Vivaldi antenna is designed.The isolating wall composed of metallic is used,which can effectively eliminate the resonance in the working frequency range of antenna.The antenna array with 3×8 scale is fabricated.The electric characteristics of central antenna element are tested,and the results show that VSWR is less than 1.8 in threefold frequency range;the 3 dB beam width of E plane is 95 degree in low frequency range,80 degree in medium frequency range,40 degree in high frequency range,respectively;the 3 dB beam width of H plane is 135 degree in low frequency range,78 degree in medium frequency range,57 degree in high frequency range,respectively;the antenna gain can achieve 6.2 dB in low frequency range,7.7 dB in medium frequency range,9.6 dB in high frequency range,respectively.The experi-mental results meet the design requirements.
