2014
DOI: 10.1002/mop.28751
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Tailoring of higher‐order mode suppression in a high‐power alternative to classical waffle‐iron filters

Abstract: In this article, a novel stepwise technique for the design of high‐power low‐pass harmonic filters is proposed. The fundamental and higher‐order mode suppression process is divided into three different steps. In the first step, the fundamental TE10‐mode rejected band is accomplished by adjusting the height of E‐plane bandstop elements along the propagation direction. In the second step, this arrangement of bandstop elements is made two‐dimensional to suppress the higher‐order TEn0 modes. Finally, the higher‐or… Show more

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Cited by 1 publication
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“…Thus, if the maximum frequency to be rejected is high, the E-plane mechanical gap will be small and, therefore, high-power operation will not be allowed. In recent times, a high-power low-pass filter with suppression of the higher-order TE n0 modes was presented in [18]- [19] based on a two-dimensional arrangement of quarterwave bandstop elements of smooth profile. Like [8], this technique requires long windowed sections to achieve the matching of the filter which have a negative impact on the insertion loss of the filter and its final size.…”
mentioning
confidence: 99%
“…Thus, if the maximum frequency to be rejected is high, the E-plane mechanical gap will be small and, therefore, high-power operation will not be allowed. In recent times, a high-power low-pass filter with suppression of the higher-order TE n0 modes was presented in [18]- [19] based on a two-dimensional arrangement of quarterwave bandstop elements of smooth profile. Like [8], this technique requires long windowed sections to achieve the matching of the filter which have a negative impact on the insertion loss of the filter and its final size.…”
mentioning
confidence: 99%