无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2015年
7期
71-74
,共4页
陈旷达%孙竹%张继浩
陳曠達%孫竹%張繼浩
진광체%손죽%장계호
宽角扫描%共形相控阵天线%圆极化阵列天线
寬角掃描%共形相控陣天線%圓極化陣列天線
관각소묘%공형상공진천선%원겁화진렬천선
wide-angle scan range%conformal phased array%circularly polarized array
箭载中继用户终端对发射天线指向的扫描速率、波束覆盖范围均提出了很高的要求。相控阵天线的快速无惯性扫描能力适合上述应用要求。介绍了一副箭载宽角扫描圆极化相控阵天线的设计方法，设计并加工了一副天线样阵，设计中采用了圆极化微带单元、共形阵列结构和顺序旋转排列馈电。测试结果表明：天线可以实现方位±60°、俯仰±45°内的二维电扫描。在上述覆盖空域内，天线增益的变化为13?2～17?2 dBi，主波束轴比小于5?8 dB，半功率波束宽度为20°～40°。天线的各项指标满足中继发射天线的要求。
箭載中繼用戶終耑對髮射天線指嚮的掃描速率、波束覆蓋範圍均提齣瞭很高的要求。相控陣天線的快速無慣性掃描能力適閤上述應用要求。介紹瞭一副箭載寬角掃描圓極化相控陣天線的設計方法，設計併加工瞭一副天線樣陣，設計中採用瞭圓極化微帶單元、共形陣列結構和順序鏇轉排列饋電。測試結果錶明：天線可以實現方位±60°、俯仰±45°內的二維電掃描。在上述覆蓋空域內，天線增益的變化為13?2～17?2 dBi，主波束軸比小于5?8 dB，半功率波束寬度為20°～40°。天線的各項指標滿足中繼髮射天線的要求。
전재중계용호종단대발사천선지향적소묘속솔、파속복개범위균제출료흔고적요구。상공진천선적쾌속무관성소묘능력괄합상술응용요구。개소료일부전재관각소묘원겁화상공진천선적설계방법，설계병가공료일부천선양진，설계중채용료원겁화미대단원、공형진렬결구화순서선전배렬궤전。측시결과표명：천선가이실현방위±60°、부앙±45°내적이유전소묘。재상술복개공역내，천선증익적변화위13?2～17?2 dBi，주파속축비소우5?8 dB，반공솔파속관도위20°～40°。천선적각항지표만족중계발사천선적요구。
The rocket?borne relay terminal has high requirements on transmitting antenna in terms of scanning speed and beam coverage.Phased array is a suitable alternative for that application due to its rapid and inertia?free beam steering ability.The paper intro?duces a design of rocket?borne circularly?polarized phased array with wide scan range. In the design of the array, circularly?polarized microstrip patch is selected as the radiating element and a conformal structure is used.The sequential rotation feeding is also implemen?ted.A prototype phased array is designed and fabricated following the procedure proposed.The test results show the antenna is able to cover ±60° in azimuth and ±45° in elevation.The antenna gain varies from 13.2 dBi to 17.2 dBi in the above scan range.The axial ratio in the main beam is better than 5.8 dB and HPBW is 20°to 40°. The specifications of the prototype satisfy the requirements on the transmitting antenna of relay terminal.
