Effects of the bottom ground plate on coplanar waveguide structures

In this article, the authors study the significant practical effects caused by the presence of a conductor plate beneath a coplanar waveguide (CPW) structure. Specifically the authors pay attention to the effects on the dispersion characteristics of the bound modes and on the signal integrity. This...

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Bibliographic Details
Published in:IET microwaves, antennas & propagation antennas & propagation, 2013-06, Vol.7 (8), p.708-713
Main Authors: El Amrani, Safae, Rodríguez-Berral, Raúl, Mesa, Francisco
Format: Article
Language:English
Subjects:
Applied sciences
Asymmetry
bottom ground plate effect
bound modes dispersion characteristics
Circuit properties
Circuits
conductor plate
Conductors (devices)
conductors (electric)
coplanar waveguide structure
Coplanar waveguides
CPW‐based circuit
Dispersions
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Grounds
Microwave antennas
Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits
Plates (structural members)
signal integrity
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Summary:In this article, the authors study the significant practical effects caused by the presence of a conductor plate beneath a coplanar waveguide (CPW) structure. Specifically the authors pay attention to the effects on the dispersion characteristics of the bound modes and on the signal integrity. This study allows one to discuss the reported proposal on the use of this additional conductor plate as an inexpensive alternative to air-bridges in order to alleviate the possible spurious effects produced by the potential existence of asymmetries in CPW-based circuits.
ISSN:1751-8725
1751-8733
1751-8733
DOI:10.1049/iet-map.2012.0594