DOI QR코드

DOI QR Code

An Unequal Wilkinson Power Divider Using Defected Ground Structure in Double Layered Substrate

이중 기판 결함 접지 구조를 이용한 비대칭 월킨슨 전력 분배기

  • Published : 2007.11.30

Abstract

A novel 1:4 unequal wilkinson power divider using rectangular-shaped defected ground structure(DGS) in double layered substrate is proposed for removing the ground problem of DGS in packaging. Rectangular-shared DGS produces the transmission line having much higher characteristic impedance than standard microstrip line. The proposed unequal divider is composed of DGS and double layered substrate in order to be free from the ground problem of DGS patterns in packaging in metal housings. The second substrate is attached to the first substrate which contains DGS pattern on its ground plane at the bottom side to form the double layered substrate. In order to show the validity of the proposed DGS in the double layered substrate, a 1:4 unequal power divider is designed and measured. The predicted and measured performances are shown with an excellent agreement between them.

Keywords

Unequal Power Divider;DGS;Double Layered Substrate

References

  1. J. S. Lim, S. -W. Lee, C. -S. Kim, J. -S. Park, D. Ahn, and S. Nam, 'A 4:1 unequal Wilkinson power divider', IEEE Microwave and Wireless Components Letters, vol. 11, no. 3, pp. 124-126, Mar. 2001 https://doi.org/10.1109/7260.915624
  2. J. S. Lim, C. -S. Kim, J. -S. Park, D. Ahn, and S. Nam, 'Design of 10 dB $90^{\circ}$ branch line coupler using microstrip line with defected ground structure', IEE Electronics Letters, vol. 36, no. 21, pp. 1784-1785, Oct. 2000 https://doi.org/10.1049/el:20001238
  3. J. S. Lim, J. S. Park, Y. T. Lee, D. Ahn, and S. Nam, 'Application of defected ground structure in reducing the size of amplifiers', IEEE Microwave and Wireless Component Letters, vol. 12, no. 7, pp. 261-263, Jul. 2002 https://doi.org/10.1109/LMWC.2002.801139
  4. E. J. Wilkinson, 'An N-way hybrid power divider', IRE Trans. Microwave Theory Tech., vol. 8, pp. 116-118, Jan. 1960 https://doi.org/10.1109/TMTT.1960.1124668
  5. J. S Lim, G. -Y. Lee, Y. -C. Jeong, D. Ahn, and K. -S. Choi, 'A 1:6 unequal Wilkinson power divider', 36th European Microwave Conference Proceedings, Manchester, pp. 200-203, Sep. 2006
  6. J. S. Lim, Y. C. Jeong, D. Ahn, and S. Nam, 'Improvement in performance of power amplifiers by defected ground structure', IEICE Trans. Electron., vol. E87-C, no. 1, pp. 52-59, Jan. 2004
  7. K. C. Gupta, et al., Microstrip Lines and Slotlines, Norwood, MA, Artech House, 1996
  8. D. Ahn, J. S. Park, C. S. Kim, J. Kim, Y. Qian, and T. Itoh, 'A design of the low-pass filter using the novel microstrip defected ground structure', IEEE Trans. Microwave Theory Tech., vol. 49, no. 1, pp. 86-93, Jan. 2001 https://doi.org/10.1109/22.899965
  9. D. M. Pozar, Microwave Engineering, Second Edition, John Wiely and Sons. Inc., New York, pp. 367-368, 1998