다양한 시간지연을 갖는 유전체 공진기 대역통과 필터의 구현 = Design and Implementation of Dielectric Resonator Bandpass Filters with Various Time-Delay

다국어 초록 (Multilingual Abstract)

Dielectric resonator bandpass filters with various time-delay at 800MHz were designed and fabricated in this paper. from the results of this study. first of all, good response. characteristics were measured for all cases. The insertion loss was below 2dB and flatness for ripple was below 0.2dB, whereas return loss was over 20dB, respectively. The measured delay time of the fabricated prototype were 6ns, 12ns and 200s, respectively and the flatness characteristics did not exceeding Ins for all cases. Furthermore, 2~4ns of flatness were measured for 2-hole dielectric block and other dielectric resonator filters with various delay time by combination of each prototypes filters were also implemented.

국문 초록 (Abstract)

본 논문에서는 800MHz 대역에서 다양한 시간자연 특성을 갖는 유전체 공진기 대역통과 필터를 설계 및 제작하였다. 각각의 경우에 삽입손실은 모두 2dB 이내이었고 ripple은 0.2dB 이내이었으며 반사손실은 20dB 이상의 값을 가지는 우수한 특성을 보였다. 지연시간의 경우에는 각각 6ns, 12ns, 20ns를 구현하였으며 이때 평탄도의 범위는 1ns 이내이었다. 또한 유전체 블록이 2-hole을 갖는 경우에는 2~4ns의 범위를 갖는 것을 확인하였으며 각각의 유전체 필터를 조합하여 다양한 지연시간을 갖는 유전체 공진기 필터를 구현하였다.

참고문헌 (Reference)

1 A. Okaya, "The Dielectric Microwave Resonator" 51 : 2081-2092, 1962

2 Chi Wang, "Mixed Modes Cylindrical Planar Dielectric Resonator Filters with Rectangular Enclosure" 43 : 1995

3 Chung-Fu Yang, "Microwave Properties of Ceramics and Its Application in Dielectric Resonator Antenna" 39 (39): 1430-1434, 2000

4 David M. Pozar, "Microwave Engineering, 2nd edition" John Wiely & Sons, Inc. 323-328, 1998

5 T. Nishkawa, "Microwave Ceramic Dielectric and their Applications" 70-80, 1988

6 H. Matsumoto, "Miciaturized Duplexer Using Telephones" 407-410, 1990

7 R. D. Richtmyer, "Dielectric Resonator" 10 (10): 391-398, 1939

8 Tae-Goo Choi, "A Method for Reducing the number of resonators in Duplexer Design" 256-260, 1994