【摘要】：為解決傳統(tǒng)的微帶低通濾波器的寬阻帶、窄過(guò)渡帶和小型化性能不能兼顧的矛盾,本文設(shè)計(jì)出一種基于Hilbert分形DGS的微帶低通濾波器。Hilbert分形DGS單元和半圓型并聯(lián)枝節(jié)諧振單元級(jí)聯(lián)構(gòu)成該低通濾波器,Hilbert分形DGS單元可減小結(jié)構(gòu)尺寸和通帶內(nèi)的反射損耗,并聯(lián)諧振單元可有效抑制高次諧波分量。此外,針對(duì)DGS單元對(duì)微帶線特性阻抗的影響,采用漸變微帶線進(jìn)行阻抗補(bǔ)償,使濾波器的通帶與阻帶性能獲得明顯改善。測(cè)試結(jié)果顯示濾波器通帶范圍為0~5.2GHz時(shí),通帶插入損耗0.3dB,阻帶范圍5.8~20.0GHz以上,面積為23.6mm×9.5mm。
[Abstract]:In order to solve the contradiction between wide stopband, narrow transition band and miniaturization performance of traditional microstrip low-pass filter, In this paper, a microstrip low pass filter based on Hilbert fractal DGS. Hilbert fractal DGS element and half circular parallel branch resonance unit are designed to construct the low pass filter Hilbert fractal DGS unit which can reduce the structure size and the reflection loss in the passband. Parallel resonant elements can effectively suppress high harmonic components. In addition, in view of the influence of DGS element on the characteristic impedance of microstrip line, the impedance compensation is carried out by using gradual microstrip line to improve the passband and stopband performance of the filter. The test results show that when the pass band range of the filter is 0 ~ 5.2GHz, the passband insertion loss is 0.3 dB, the stopband range is more than 5.8 ~ 20.0 GHz, and the area is 23.6mm 脳 9.5 mm.
【作者單位】： 湖北大學(xué)計(jì)算機(jī)與信息工程學(xué)院;武漢濱湖電子有限責(zé)任公司;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51472079)
【分類號(hào)】：TN713.4

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本文編號(hào)：2118867