http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Prayoot Akkaraekthalin,Jaruek Jantree 한국전자통신연구원 2006 ETRI Journal Vol.28 No.5
This paper presents a new class of microstrip slow-wave open-loop resonator filters with reduced size and improved stopband characteristics. A comprehensive treatment of both ends loaded with triangular and rectangular ends is described, leading to the invention of a microstrip slow-wave open-loop resonator. Two-resonator and four-resonator bandpass filters are designed at the operating frequency of about 2 GHz, and a bandwidth of 60 MHz. The size of the slow-wave open-loop resonator is optimized from the standpoint of the unloaded Q-factor. The filters are not only compact in size due to the slowwave effect, but also have a wider upper stopband resulting from the dispersion effect. The filter designs of this type are described in details. The experimental results are demonstrated and discussed.
Lerdwanittip, Reungyot,Namsang, Apirada,Akkaraekthalin, Prayoot The Institute of Electronics and Information Engin 2011 Journal of semiconductor technology and science Vol.11 No.1
In this paper, the T-shape stepped impedance resonators are adopted for the design of microstrip bandpass filters for wide harmonics suppression. The proposed filters are operated at the center frequency of 2.44 GHz and 5.20 GHz, respectively. These bandpass filters have been also applied for a high performance diplexer. The insertion losses at the center frequencies of 2.44 and 5.20 GHz are 1.23 and 1.18, respectively. The applicable return losses for both frequency bands and a wide stopband better than 17 dB up to 20 GHz have been obtained.
Reungyot Lerdwanittip,Apirada Namsang,Prayoot Akkaraekthalin 대한전자공학회 2011 Journal of semiconductor technology and science Vol.11 No.1
In this paper, the T-shape stepped impedance resonators are adopted for the design of microstrip bandpass filters for wide harmonics suppression. The proposed filters are operated at the center frequency of 2.44 ㎓ and 5.20 ㎓, respectively. These bandpass filters have been also applied for a high performance diplexer. The insertion losses at the center frequencies of 2.44 and 5.20 ㎓ are 1.23 and 1.18, respectively. The applicable return losses for both frequency bands and a wide stopband better than 17 ㏈ up to 20 ㎓ have been obtained.