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군지연 등화된 두 개의 통과대역을 갖는 필터의 합성에 관한 연구
이주섭,엄만석,박종흥,Lee Juseop,Uhm Man Seok,Park Jong Heung 한국전자파학회 2005 한국전자파학회논문지 Vol.16 No.1
본 논문에서는 각 통과대역이 군지연 등화된 두 개의 통과대역을 갖는 필터의 합성 방법에 관하여 언급하였다. 각 통과대역이 군지연 등화된 특성을 가지게 함으로써, 기존의 이중 통과대역 필터보다 디지털 데이터 전송에 있어서 비트 에러율(BER)을 감소시킬 수 있고, 군지연 변화를 등화시키기 위하여 외부 등화기가 별도로 필요하지 않다. 본 논문에서의 합성 방법 타당성 검증을 위하여 각 통과대역이 군지연 등화된 5차 타원 응답특성을 갖는 두 개의 통과대역을 갖는 10차 이중모드 필터를 합성하였다. This paper describes a synthesis method for a self-equalized dual-passband filter. Compared to conventional dual-passband filter, a self-equalized dual-passband filter can reduce BER(bit error rate) in digital data communications and does not need an external equalizer for group-delay equalization. To validate the synthesis technique, a 10-pole dual-mode dual-passband filter which has two self-equalized 5-pole elliptic response passband is synthesized.
이주섭(Lee Juseop) 한국언어문학회 2009 한국언어문학 Vol.69 No.-
This thesis studied and classified distinctive features for elementary Korean textbook by revised 7thcurriculum into the aspect of composing text books and the aspect of curriculum to be detailed. In relation to whole composition of textbooks, the most distinctive features of elementary Korean textbook by revised 7th curriculum are reduction of unit size and increasing the number of units. This is because elementary Korean textbook by revised 7th curriculum didn't reflect the part of learning by grades. This thesis classified distinctive features for elementary Korean textbook by revised 7th curriculum into seven parts. In connection with the composition of each unit, It also analyzes the distinctive features of introduction learning, comprehension learning, completion learning, application learning, resting area and so on. In relation to the aspect of curriculum to be detailed, It points out the confusion of establishing a goal which is caused because 'Practical' part of revised curriculum didn't coincide with the parts of 'essence', 'principle' and 'attitude'. 'Practical' part of revised curriculum is designed to correspond with other parts. So, making curriculum to be detailed is much easier to proceed in revised curriculum. In cases which have the confusing of revised curriculum's interpretation, this thesis presents flexible examples applied to the logic of textbook makers.