电子元件与材料
電子元件與材料
전자원건여재료
ELECTRONIC COMPONENTS & MATERIALS
2015年
2期
58-61
,共4页
带通滤波器%S波段%异向传输线%半圆波导%异向波导%异向通带
帶通濾波器%S波段%異嚮傳輸線%半圓波導%異嚮波導%異嚮通帶
대통려파기%S파단%이향전수선%반원파도%이향파도%이향통대
band-pass filter%S-band%left-hand transmission line%semi-circular waveguide%left-hand waveguide%left-hand passband
根据异向传输线原理设计了一种半圆异向波导单元，基于该单元提出了一种新型带通滤波器。利用HFSS软件对级联的四阶单元进行仿真，研究了其不同结构参数对电磁波传输的影响。用八阶单元构成中心频率为2.8 GHz的新型带通滤波器，利用HFSS软件在S波段对其进行模拟。结果为：异向通带为2.25~3.25 GHz，3 dB带宽达35.7%。利用理论分析与仿真相结合的方法，验证了该滤波器具有异向特性，与常规波导滤波器及基于微带线异向传输线实现的滤波器相比该滤波器具有小尺寸、低成本、高功率容量、低损耗、带外衰减特性好等优点。
根據異嚮傳輸線原理設計瞭一種半圓異嚮波導單元，基于該單元提齣瞭一種新型帶通濾波器。利用HFSS軟件對級聯的四階單元進行倣真，研究瞭其不同結構參數對電磁波傳輸的影響。用八階單元構成中心頻率為2.8 GHz的新型帶通濾波器，利用HFSS軟件在S波段對其進行模擬。結果為：異嚮通帶為2.25~3.25 GHz，3 dB帶寬達35.7%。利用理論分析與倣真相結閤的方法，驗證瞭該濾波器具有異嚮特性，與常規波導濾波器及基于微帶線異嚮傳輸線實現的濾波器相比該濾波器具有小呎吋、低成本、高功率容量、低損耗、帶外衰減特性好等優點。
근거이향전수선원리설계료일충반원이향파도단원，기우해단원제출료일충신형대통려파기。이용HFSS연건대급련적사계단원진행방진，연구료기불동결구삼수대전자파전수적영향。용팔계단원구성중심빈솔위2.8 GHz적신형대통려파기，이용HFSS연건재S파단대기진행모의。결과위：이향통대위2.25~3.25 GHz，3 dB대관체35.7%。이용이론분석여방진상결합적방법，험증료해려파기구유이향특성，여상규파도려파기급기우미대선이향전수선실현적려파기상비해려파기구유소척촌、저성본、고공솔용량、저손모、대외쇠감특성호등우점。
A left-hand semi-circular waveguide unit was designed according to the basic principle of left-hand transmission line, a novel band-pass filter based on the unit was presented. Using HFSS software, cascaded four-order unit was simulated and the effects of structure parameters of it on the travel of electromagnetic wave were investigated. An eight-order units filter prototype was designed in the center frequency of 2.8 GHz, using HFSS software the filter was simulated in the S-band, the simulation results show that the left-hand passband of the filter at the frequency range from 2.25 GHz to 3.25 GHz. The relative 3 dB bandwidth is 35.7%. Using the method of combining the theoretical analysis and simulation, validates that the filter exhibits obvious left-hand behavior, compared with normal waveguide filter and filters based microstrip left-hand transmission line, the filter has merits of small size, low cost, high power capacity, low loss, high selectivity, etc.
