volume | PIER Journals

Abstract

This paper presents an analytical solution for capacitance and characteristic impedance of CPW with defected structures (CPW_DS) in signal line. The first category of incomplete elliptic integrals F(φ, k) is employed for calculation, and the capacitance and characteristic impedance of CPW_GS in signal line are first time achieved by the analytical solution. FEM simulation results are used toverify the results of analytical solution,which shows a good agreement. All calculations are completed in software Wolfram Mathematica, and CPW structures are simulated in software HFSS.

54. Gupta, K. C., R. Garg, I. Bahl, and P. Bhartia, "Coplanar lines: Coplanar waveguide and coplana strips," Microstrip Lines and Slot lines, 2nd Edition, Chapter 7, Artech House, Norwood, MA, 1996.

2. Zhu, L. and K. Wu, "Characterization of finite-ground CPW reactive series-connected elements for innovative design of uniplanar M(H)MICs," IEEE Trans. Microw. Theory Tech., Vol. 50, No. 2, 549-557, Feb. 2002.
doi:10.1109/22.982234

3. Wen, C. P., "Coplanar waveguide: A Surface strip transmission line suitable for non-reciprocal gyromagnetic device application," IEEE Trans. Microw. Theory Tech., Vol. 18, No. 17, 1087-1090, 1969.
doi:10.1109/TMTT.1969.1127105

4. Davis, M. E., et al. "Finite boundary corrections to the coplanar waveguide analysis," IEEE Trans. Microw. Theory Tech., Vol. 21, No. 9, 594-596, 1973.
doi:10.1109/TMTT.1973.1128081

5. Dib, N. I., M. Gupta, G. E. Ponchak, and L. P. B. Katehi, "Characterization of asymmetric coplanar waveguide discontinuities," IEEE Trans. Microw. Theory Tech., Vol. 41, No. 9, 345-352, Sep. 1993.
doi:10.1109/22.245676

6. Linner, L. J. P. and E. L. Kollberg, "CAD models for shielded multilayered CPW," IEEE Trans. Microw. Theory Tech., Vol. 43, No. 4, 772-779, Apr. 1995.
doi:10.1109/22.375223

7. Zhu, L., "Unified 3-D definition of CPW- and CSL-mode characteristic impedances of coplanar waveguide using MOM-SOC technique," IEEE Microwave and Wireless Components Letters, Vol. 13, No. 4, 158-160, 2003.
doi:10.1109/LMWC.2003.811043

8. Dib, N., "Comprehensive study of CAD models of several coplanar waveguide (CPW) discontinuities," IEE Proc. Microw. Antennas Propag., Vol. 152, No. 2, 69-76, Apr. 2005.
doi:10.1049/ip-map:20045039

9. Simons, R., Coplanar Waveguide Circuits, Components, and System, John Wiley & Sons, 2001.
doi:10.1002/0471224758

10. Zhang, X. and T. Miyoshi, "Optimum design of coplanar waveguide for LiNbO3 optical modulator," IEEE Trans. Microw. Theory Tech., Vol. 43, No. 3, 523-528, 1995.
doi:10.1109/22.372096

11. Davis, M. E., et al. "Finite boundary corrections to the coplanar waveguide analysis," IEEE Trans. Microw. Theory Tech., Vol. 21, No. 9, 594-596, 1973.
doi:10.1109/TMTT.1973.1128081

12. Fang, S., "Study on the characteristic and field pattern of asymmetric coplanar waveguides,", Doctoral Thesis, Dalian Maritime University, Feb. 2001.

13. Zhang, N.-B. and Z.-L. Deng, "Method to design microwave band-stop filter based on CPW," Electronics Letters, Vol. 47, No. 8, 450-451, Mar. 2011.
doi:10.1049/el.2010.3623

14. Guo, X. L., C. Xu, G. A. Zhang, Z. J. Zhang, H. H. Yin, and Z. L. Wang, "Tunable low-pass MEMS filter using defected ground structures (DGS)," Solid-State Electronics, Vol. 94, No. 6, 28-31, 2014.
doi:10.1016/j.sse.2013.12.012

15. Zhang, C., J. Zhang, and L. Li, "Triple band-notched UWB antenna based on SIR-DGS and fork-shaped stubs," Electronics Letters, Vol. 50, No. 2, 67-69, Jan. 2013.
doi:10.1049/el.2013.2513

16. Liang, C., Concise Microwave, 163-164, Higher Education Press, 2006.

Dr. Naibo Zhang

Dr. Zhongliang Deng

Dr. Lingmin Shao

Dr. Jun Yang