CAJ | 학술논문

表面波等离子体天线因存在很强的电磁干扰而导致电磁兼容性较差,必须采用相应的技术手段或利用新型电源作为天线激励源以满足天线的电磁兼容性要求。为此,采用5～20kHz高压交流电源作为激励源构建了10kHz交流等离子体天线,并分析了其辐射特性和电磁兼容性。研究结果表明,在较宽的频带范围内,该10kHz交流等离子体天线的电压驻波比（VSWR）〈2;同50Hz交流等离子体天线相比,该天线的噪声明显减小,且天线的增益在150～350MHz频带范围内有所提高;使用该天线接收无线广播时收音机可以接收到广播电台信号,而表面波等离子体天线则会因过强的干扰而导致收音机不能正常工作。该10kHz交流等离子体天线不仅在带宽特性上有所改观,而且同表面波等离子体天线相比具有较低的电磁干扰。
표면파등리자체천선인존재흔강적전자간우이도치전자겸용성교차,필수채용상응적기술수단혹이용신형전원작위천선격려원이만족천선적전자겸용성요구。위차,채용5～20kHz고압교류전원작위격려원구건료10kHz교류등리자체천선,병분석료기복사특성화전자겸용성。연구결과표명,재교관적빈대범위내,해10kHz교류등리자체천선적전압주파비（VSWR）〈2;동50Hz교류등리자체천선상비,해천선적조성명현감소,차천선적증익재150～350MHz빈대범위내유소제고;사용해천선접수무선엄파시수음궤가이접수도엄파전태신호,이표면파등리자체천선칙회인과강적간우이도치수음궤불능정상공작。해10kHz교류등리자체천선불부재대관특성상유소개관,이차동표면파등리자체천선상비구유교저적전자간우。
The strong electromagnetic interference in surface wave plasma antenna leads to its poor electromagnetic compatibility. In order to find appropriate means or new power supply to solve the problem, a 10 kHz AC plasma antenna prototype was established using a 5- 20 kHz high voltage AC power supply. The prototype' s radiation characteristics and electromagnetic compatibility were measured and analyzed. The results show that voltage standing--wave ratio (VSWR} is less than 2 in broad frequency range. Compared with 50 Hz AC plasma antennas, the noise reduces, and the gain increases from 150 MHz to 350 MHz. When connecting the plasma antenna to a radio, the radio can receive radio broadcasting normally. For the 10 kHz AC plasma antenna, there is improvement not only in its bandwidth, but also in its electromagnetic compatibility.