대한전자공학회논문지TC (Journal of the Institute of Electronics Engineers of Korea TC)

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

주기적 스터브를 이용한 슬롯결합형 마이크로스트립 방향성결합기의 특성 개선

Performance Improvement of Slot-Coupled Microstrip Directional Coupler Using Periodic Stubs

  • 김종성 (한국정보통신대학교 공학부)
  • Kim Jong-Sung (School of Engineering, Information and Communications University)
  • 발행 : 2004.06.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

슬롯결합형 마이크로스트립 방향성결합기의 반사계수와 분리도를 동시에 개선시키기 위하여 기존의 사각형 형태의 슬롯에 주기적으로 다수의 슬롯이 추가되었다. 방향성결합기의 2 개모드간 위상속도와 등가회로를 이용하여 설계 방정식을 도출하였다. 이상적인 성능이 설계 예제를 통하여 가능함을 확인하였다.

Several stubs are added to a rectangular slot for giving an improvement in both return loss and isolation for a slot-coupled microstrip directional coupler. Its closed-form design equations are derived by velocity equalization of two normal modes and network equivalence. It was verified that nearly ideal performance is achievable by design examples.

키워드

참고문헌

  1. T. Tanaka, K. Tsunoda, and M. Aikawa, 'Slot -Coupled Directional Couplers between Double-Sided Substrate Microstrip Lines and their Applications,'IEEE Trans. Microwave Theory Tech., Vol. MTT-36, No.12, pp.1752-1757, Dec., 1988 https://doi.org/10.1109/22.17410
  2. M. F. Wong, V. F. Hanna, O. Picon, and H. Bau drand, 'Analysis and Design of Slot-Coupled Directional Couplers between Double-Sided Substrate Microstrip Lines,' IEEE Trans. Microwave Theory Tech., Vol. MTT-39, No.12, pp.2123 -2129, Dec., 1991 https://doi.org/10.1109/22.106554
  3. Podell, 'A High Directivity Microstrip Coupler Technique,' IEEE MTT-S Int. Microwave Symp. Dig., pp.33-36, 1970
  4. Sheleg B. and B. E. Spielman, 'Broadband Directional Couplers Using Microstrip With Dielectric Overlays,' IEEE Trans. Microwave Theory Tech., Vol. MTT-22, pp.1216-1220, 1974 https://doi.org/10.1109/TMTT.1974.1128466
  5. Kajfez D., 'Raise Coupled Directivity with Lumped Components,' Microwaves, Vol.17, No.3, pp.64-70, Mar., 1978
  6. March S. L., 'Phase Velocity Compensation in Parallel-Coupled Microstrip,' IEEE MTT-S Int. Microwave Symp. Digest, pp.410~412, 1982
  7. Homo M. and F. Medina, 'Multilayer Planar Structures for High-Directivity Directional Coupler Design,' IEEE Trans. Microwave Theory Tech., Vol. MTT-34, pp.1442-1449, 1986 https://doi.org/10.1109/TMTT.1986.1133561
  8. M. Dydyk, 'Microstrip Directional Couplers with Ideal Performance via Single-Element Compensation,'IEEE Trans. Microwave Theory Tech., Vol. MTT-47, No.6, pp.956-964, June, 1999 https://doi.org/10.1109/22.769332
  9. J. P. Kim and W. S. Park, 'Network Analysis and Synthesis of Multislot Back-to-Back Micro strip Microstrip Directional Couplers,'IEEE Trans. Microwave Theory Tech., Vol. MTT-48, No.11, pp.1935-1942, Nov., 2000 https://doi.org/10.1109/22.883874
  10. K. C. Gupta, R. Garg, I. Bahl and P. Bhartia, Microstrip Lines and Slotlines, 2nd ed., Norwood, MA: Artech House, 1996