ࡱ> 796q` R bjbjqPqPm6::R (<| <P      $hPx  B 5 ,a    *y y y y   y y y y  91y y HPy y y y Z  y y P <<<<<<<<< Sample for Advanced Editing Service Miniaturization of microwave filters isare an important area of focus in the electronics industry. For mobile telephones, cCeramics laminated filters have been widely used for mobile telephones. Particularly cComb-line filters, especially, have attractedbeen seeking attention because of their compactness nature, low cost ofcheap production, lowsmall insertion loss, and highlarge rejection capability. In this study, a comb-line filter in whichwhere both sides of the dielectric substrate areis utilized is designed. The Ccombline filter consists of two quarter-wavelength resonators. The coupling between them can be changed locally to generateand attenuation poles can be created in the frequency characteristics of the transmission parameter by changing the coupling locally along the resonators. Strong coupling between two resonators is achievedobtained by installing a patch conductor on the dielectric substrate, aboveover the resonators. The Ppatch conductor is referred to as a coupling capacitor. A Mmethod forof installing the coupling capacitor by inserting slots into the ground plane is discussed. By tThis method, allows the coupling capacitor to be installedcan be achieved without creatingusing a multilayered structure. As method of inserting slots into a ground plane, a defected ground structure (DGS) has attracting much attention. Broadly speaking, therefore, the proposed structure is a kind of DGSdefected ground structure. The filtering characteristics are investigated through numerical simulations andas well as experiments. The fFilters withusing stepped impedance resonators (SIRs) are also discussed, and effects of the coupling capacitor for an SIRstepped impedance resonator structure are describedshown. [The above content has been derived from a research article written by Toshiaki Kitamura.] It seems this phrase is not commonly used in the literature. Would you like to use ceramic filters instead? The meaning of this phrase is slightly unclear in the context of the sentence. We suggest using in designing circuitry for mobile telephones, provided it conveys the intended meaning. This phrase appears slightly unconventional. An alternative we can suggest is frequency characteristics of the filter. This sentence does not blend with the flow of the text. We suggest the following alternative sentence: Furthermore, a defected ground structure (DGS) is employed to insert slots into the ground plane. 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