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    Coplanar Waveguide - Wikipedia

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    Coplanar Waveguide - Wikipedia

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    Coplanar Waveguide - Wikipedia

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    Coplanar Waveguide - Wikipedia

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    93 views2 pages

    Coplanar Waveguide - Wikipedia

    Uploaded by

    alvipin001
    Coplanar Waveguide - Wikipedia

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
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    10/18/2016

    Coplanar waveguide - Wikipedia

    Coplanar waveguide
    From Wikipedia, the free encyclopedia

    Coplanar waveguide is a type of electrical transmission line which can be


    fabricated using printed circuit board technology, and is used to convey
    microwave-frequency signals. On a smaller scale, coplanar waveguide
    transmission lines are also built into monolithic microwave integrated
    circuits. Conventional coplanar waveguide (CPW) consists of a single
    conducting track printed onto a dielectric substrate, together with a pair of
    return conductors, one to either side of the track. All three conductors are
    on the same side of the substrate, and hence are coplanar. The return
    conductors are separated from the central track by a small gap, which has
    an unvarying width along the length of the line. Away from the cental
    conductor, the return conductors usually extend to an indefinite but large
    distance, so that each is notionally a semi-infinite plane.

    Cross section of a conductor-backed


    coplanar waveguide transmission line

    Conductor-backed coplanar waveguide (CBCPW) is a common variant


    which has a ground plane covering the entire back-face of the substrate.
    The ground-plane serves as a third return conductor.
    The electromagnetic wave carried by a coplanar waveguide exists partly in
    the dielectric substrate, and partly in the air above it. In general, the
    dielectric constant of the substrate will be different (and greater) than that
    of the air, so that the wave is travelling in an inhomogeneous medium. In
    consequence CPW will not support a true TEM wave; at non-zero
    frequencies, both the E and H fields will have longitudinal components (a
    hybrid mode).

    A 517 m tall copper coplanar


    waveguide created using LIGA
    technique. [1]

    See also
    Waveguide (electromagnetism)
    Microstrip
    Stripline
    Post-wall waveguide
    Telegrapher's equations
    Via fence

    References
    1. Forman, M. A. (December 2006). "Low-loss LIGA-fabricated coplanar waveguide and filter". Apmc 2006. 12: 9051907.

    External links
    Coplanar waveguide circuits, components and systems (http://books.google.com/books?id=XgNMZ5YVJdg
    C) (Rainee N. Simons - Wiley series in microwave and optical engineering ; Year 2001 ; ISBN 0-471-16121-7)
    Retrieved from "https://en.wikipedia.org/w/index.php?title=Coplanar_waveguide&oldid=713960607"
    Categories: Microwave technology Signal cables
    https://en.wikipedia.org/wiki/Coplanar_waveguide

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    10/18/2016

    Coplanar waveguide - Wikipedia

    This page was last modified on 6 April 2016, at 20:08.


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    https://en.wikipedia.org/wiki/Coplanar_waveguide

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