Variation of lange-coupler geometry with dielectric constant

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Variation of lange-coupler geometry with dielectric constant

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© The Institution of Electrical Engineers
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Geometry of the −3 dB, 50Ω Lange coupler is presented as a continuous function of dielectric constant, between ɛr=2 and 12. Corresponding even- and odd-mode phase velocities are also given, allowing the length of coupled section to be calculated.

Inspec keywords: strip line components; waveguide couplers

Other keywords: microstrip; dielectric constant; Lange waveguide coupler; stripline components

Subjects: Waveguide and microwave transmission line components

References

    1. 1)
      • Bryant, T.G., Weiss, J.A.: `Normal mode impedance of a coupled pair of microstrip transmission lines', G-MTT international microwave symposium digest, May 1968, p. 117–122.
    2. 2)
      • A. Presser . Interdigitated microstrip coupler design. IEEE Trans. , 801 - 805
    3. 3)
      • D.D. Paolino . Design more accurate interdigitated couplers. Microwaves , 34 - 38
    4. 4)
      • R. Horton . Loss and sensitivity of the Lange coupler. Electron. Lett. , 391 - 393
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