Improved performance of microstrip couplers through multi-layer substrates

James P.K. Gilb, Constantine Balanis

Research output: Contribution to conferencePaper

3 Citations (Scopus)

Abstract

Edge-coupled microstrip directional couplers are widely used in microwave circuits, however practical limits on center conductor spacings limit the level of coupling that can be attained. In addition, differences in the even and odd mode phase velocities degrade the performance of broad-side coupled microstrip directional couplers. A new technique for equalizing the phase velocities is presented which enhances the coupling and directivity, but uses wider center conductor spacing than traditional designs. This new technique uses two substrate layers where the upper substrate dielectric constant is much larger than the dielectric constant of the lower substrate. This allows the design of directional couplers with tighter couplings and better performance.

Original languageEnglish (US)
Pages624-626
Number of pages3
DOIs
StatePublished - Jan 1 1993
Event1993 23rd European Microwave Conference, EuMA 1993 - Madrid, Spain
Duration: Sep 6 1993Sep 10 1993

Conference

Conference1993 23rd European Microwave Conference, EuMA 1993
CountrySpain
CityMadrid
Period9/6/939/10/93

Fingerprint

Directional couplers
directional couplers
couplers
Phase velocity
phase velocity
Permittivity
Substrates
conductors
spacing
permittivity
Microwave circuits
microwave circuits
directivity

ASJC Scopus subject areas

  • Instrumentation
  • Electronic, Optical and Magnetic Materials

Cite this

Gilb, J. P. K., & Balanis, C. (1993). Improved performance of microstrip couplers through multi-layer substrates. 624-626. Paper presented at 1993 23rd European Microwave Conference, EuMA 1993, Madrid, Spain. https://doi.org/10.1109/EUMA.1993.336648

Improved performance of microstrip couplers through multi-layer substrates. / Gilb, James P.K.; Balanis, Constantine.

1993. 624-626 Paper presented at 1993 23rd European Microwave Conference, EuMA 1993, Madrid, Spain.

Research output: Contribution to conferencePaper

Gilb, JPK & Balanis, C 1993, 'Improved performance of microstrip couplers through multi-layer substrates', Paper presented at 1993 23rd European Microwave Conference, EuMA 1993, Madrid, Spain, 9/6/93 - 9/10/93 pp. 624-626. https://doi.org/10.1109/EUMA.1993.336648
Gilb JPK, Balanis C. Improved performance of microstrip couplers through multi-layer substrates. 1993. Paper presented at 1993 23rd European Microwave Conference, EuMA 1993, Madrid, Spain. https://doi.org/10.1109/EUMA.1993.336648
Gilb, James P.K. ; Balanis, Constantine. / Improved performance of microstrip couplers through multi-layer substrates. Paper presented at 1993 23rd European Microwave Conference, EuMA 1993, Madrid, Spain.3 p.
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