Journal of Electrical Engineering and information Science

대한전기학회 (The Korean Institute of Electrical Engineers)
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Design of Planar Microwave Bandstop Filters by Control of Wave Propagation on Nonuniform Transmission Line

  • Park, Eui-Joon (Department of Electronic Engineering, Kumoh National University of Technology)
  • 발행 : 1997.10.01
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초록

A design method is newly presented for the creation of planar type filters which shapes will be nonuniform transmission line with continuously varying characteristic impedances. Those filters yield frequency characteristics of the bandstop filter in transmission, and have not nay discontinuities. The design is achieved by the control of wave propagation in view to both reflection an transmission properties on the dispersive nonuniform line within the desired frequency band. The developed algorithm is based on optimized perturbations of inherent nulls of lobes from the solution of first-order nonlinear differential equation for reflection coefficients of the nonuniform line, and an appropriate distribution of reflection coefficient which affects to filter length and bandwidth. Practical measurements for designed wideband microstrip and stop filter show very good agreement with theoretical results.

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참고문헌

  1. Microwave Transmission line Filters J.A.G.Malherbe.
  2. IEEE TRans. Microwave Theory Tech v.43 Design of microwave filters by inverse scattering P.P.Roberts.;G.E.Town.
  3. I.R.E. Trans. Antennas Propagat. v.Ap-7 Design of line source antennas for narrow beamwidth and low side lobes T.T.Taylor.
  4. IEEE Trans. Antemmas Propagat. v.AP-16 A techique for the synthesis of line-source antenna patterns having specified sidelobe behavior R.F.Hyneman.
  5. Fundations for mocrowave Engineering R.E.Collin.
  6. IEEE Trans. Microwave Theory Tech v.20 Wave propagation on nonuniform transmission lines A.Bergquist.
  7. Handbook of microwave Integrated Circuits. R.K.Hoffmann.
  8. Lineaar and nonliner Programming. D.G.Luenberger.
  9. IEEE Trans. Microwave Theory Tech. v.44 An efficent synthesis technique of tapered transmission line with loss and dispersion E.J.Park.
  10. IEEE Trans. Microwave Theory Tech. v.44 Error bound for the approximate Fourier transformation relationship for nonuniform transmission lines R.Finkler.;R.Unbehauen.
  11. IEEE Trans. Microwave Theory Tech. v.MIT-32 Accurate wide-range design equations for the frequency-dependent characteristic of parallel coupled microstriplines M.Kirschning.;R.H.Jansen.
  12. IEEE MIT-S Int. Microwave Symp. Dig. Accurate models for microstrip computer-acided design E.Hammerstad.;O.Jensen.