CAJ | 학술논문

该文设计一种新颖的树状分形超宽带天线，该天线采用梯形结构的有限接地面。增加树状分形结构的迭代次数和优化有限接地面的形状可以使天线获得良好的阻抗匹配，进而实现天线的超宽带性能。该天线的工作频带为4.2~17.5 GHz(相对带宽为122.6%)，天线的电尺寸为0.35??0.35?，可应用于C波段、X波段、Ku波段和超宽带(UWB)波段通信，具有广泛的应用前景。实测结果和仿真结果吻合，证明了该天线的有效性。
해문설계일충신영적수상분형초관대천선，해천선채용제형결구적유한접지면。증가수상분형결구적질대차수화우화유한접지면적형상가이사천선획득량호적조항필배，진이실현천선적초관대성능。해천선적공작빈대위4.2~17.5 GHz(상대대관위122.6%)，천선적전척촌위0.35??0.35?，가응용우C파단、X파단、Ku파단화초관대(UWB)파단통신，구유엄범적응용전경。실측결과화방진결과문합，증명료해천선적유효성。
An ultra-wideband fractal antenna is proposed, which has an isosceles trapezoid ground-plane. Increasing fractal iterations and optimizing ground-plane shape can achieve a better impedance matching so as to realize Ultra-WideBand (UWB) antenna performance. The presented fractal antenna offers a-10 dB return loss bandwidth in the range of 4.2 to 17.5 GHz (relative band is 122.6%) with electrical dimension of0.35??0.35?. Thus, this type of antenna is suitable for C, X, Ku and UWB band communications, which may have a wide application prospect. The measured results fit well with the simulation results, and the effectiveness is validated using the measured results.