CAJ | 학술논문

基于分形几何与复合左右手传输线的混合技术方法,提出了一种新型小型化微带双工器并对其进行了研究.该双工器将工作于一对不同频率的两个三端口网络进行合成,由构成其左手部分的集总元件和右手部分的Sierpinski分形微带线组成.双工器的小型化得益于Sierpinski分形曲线的空间填充特性.而双工器的双频特性是由于复合左右手传输线具有双曲色散关系.为验证所提方法的有效性,成功设计了基于不同Sierpinski迭代次数的双工器.为证实仿真结果,加工测试了基于Sierpinski二次迭代分形的复合左右手双工器.仿真结果与测试结构吻合的很好.与未采用分形结构的传统复合左右手双工器相比,所制作的双工器工作于GSM两个频段(0.9和1.8 GHz)并获得了良好的通带性能和小型化比例,最大小型化比例达76.3％.
기우분형궤하여복합좌우수전수선적혼합기술방법,제출료일충신형소형화미대쌍공기병대기진행료연구.해쌍공기장공작우일대불동빈솔적량개삼단구망락진행합성,유구성기좌수부분적집총원건화우수부분적Sierpinski분형미대선조성.쌍공기적소형화득익우Sierpinski분형곡선적공간전충특성.이쌍공기적쌍빈특성시유우복합좌우수전수선구유쌍곡색산관계.위험증소제방법적유효성,성공설계료기우불동Sierpinski질대차수적쌍공기.위증실방진결과,가공측시료기우Sierpinski이차질대분형적복합좌우수쌍공기.방진결과여측시결구문합적흔호.여미채용분형결구적전통복합좌우수쌍공기상비,소제작적쌍공기공작우GSM량개빈단(0.9화1.8 GHz)병획득료량호적통대성능화소형화비례,최대소형화비례체76.3％.
A new type of miniaturized microstrip diplexer is initially proposed based on the combined technology of fractal geometry and composite right/left handed transmission line (CRLH TL).The diplexer which is synthesized by combining two 3-port networks operating at a pair of different frequencies consists of lumped elements for the left handed (LH) part and Sierpinski-shaped microstrip lines (MLs) for the right handed (RH) part.Sierpinski curve allows miniaturized dimensions of the diplexer mainly attributing to its strong space-filling capability.CRLH TL enables dual-band design due to its unique hyperbolic-linear dispersion relation.For demonstration,three CRLH diplexers using Siepinski curves of different iteration orders are successfully designed.For verification,a CRLH diplexer sample by adopting a Sierpinski curve of second order was fabricated and measured.Consistent numerical and experimental results have confirmed the design.The fabricated diplexer operating at 0.9 and 1.8 GHz,respectively achieves good in-band performances and a maximal 76.3％ size reduction compared to the conventional CRLH diplexer without fractal geometry.