The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
권호 표지

T-Shaped DGS for CPW

CPW에 삽입된 T자형 DGS

  • Kim Hyung-Mi (Department of Radio Engineering, Kyunghee University) ;
  • Lee Bom-Son (Department of Radio Engineering, Kyunghee University)
  • Published : 2004.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we propose a T-shaped DGS for CPW and provide the closed-form solutions for power loss rate, and bandwidth of the DGS. The proposed T-shaped DGS structure has a range of capacitance(C) 5.5 times wider than the dumbbell-shaped DGS structure. In addition we also analyze relations between R, L, C values of the DGS equivalent circuit and total loss rate, BW, $\omega_0$ of the DGS.

본 논문에서는 CPW에 식각된 T자형 DGS를 제안하고 전송이론을 이용하여 전파 방사를 포함한 손실률, BW(3-dB fractional bandwidth) 등을 closed-form 형태의 수식으로 유도하고 이의 영향에 대해 분석한다. 제안된 T자형 DGS 구조는 기존의 아령형 DGS 구조보다 약 5.5배정도 큰 커패시턴스(C) 조절 특성을 가진다. 또 DGS 등가회로의 R, L, C값과 손실률, BW, 저지대역 공진 각주파수($\omega_0$)의 상관관계를 정량적으로 이끌어낸다.

Keywords

References

  1. David M. Pozar, Microwave Engineering, Second Edition, John Wiley & Sons, Inc., pp. 422-425, 1992
  2. Dal Ahn, Jun-Seok Park, Chul-soo Kim, Juno Kim, Yongxi Qian and Tatsuo Itoh, "A design of the low-pass filter using the novel microstrip defected ground structure", IEEE Trans. MIT, vol. 49, no. 1, pp. 86-93, Jan. 2001 https://doi.org/10.1109/22.899965
  3. Jong-Sik Lim, Chul-Soo Kim, Young-Taek Lee, Dal Ahn and Sangwook Nam, 'A spiral-shaped defected ground structure for coplanar waveguide', IEEE Microwave and Wireless Components Letters, vol. 12, no. 9, Sep. 2002
  4. Boon Tiong Tan, Jong Jen Yu, Soon Joo Koh and Siou Teck Chew, "Investigation into broadband PBG using a butterfly-radial slot(BRS)", IEEE MITS International, vol. 2, pp. 8-13, Jun. 2003
  5. 신윤미, 이지면, 이범선, 'ID PBG 구조의 저지대역 특성 분석', 한국전파학회 논문지, 13(2), pp 136-145, 2002년
  6. Insik Chang, Bomson Lee, 'Design of defected ground structures for harmonic control for active microstrip antenna', IEEE Antennas and Propagation Society International Symposium, vol. 2, pp. 852-855, Jun. 2002
  7. Jong-Sik Lim, Young-Taek Lee, Jae-Hee Han, Jun-Seok Park, Dal Ahn and Sangwook Nam, 'A technique for reducing the size of amplifiers using defected ground structure", IEEE MIT-S Digest, pp. 1153-1156, 2002
  8. Robert E. Collin, Foundations for Microwave Engineering, Second Edition, McGraw-Hill, N.Y., 1992