Micromachined Rectangular-Coaxial Transmission Lines

Abstract

Rectangular-coaxial (recta-coax) transmission lines fabricated through a three-dimensional micromachining process are presented. These lines are shown to have significant advantages over competing integrated transmission lines such as microstrip and coplanar waveguides. Design equations are presented for impedance, loss, and frequency range. The equations are confirmed with simulations and measurements. The quality factor of shorted lambda/4 resonators is measured to be 156 at 60 GHz. This corresponds to a line loss of 0.353 dB/cm. Advantages of these lines for passive millimeter-wave circuits including ease of signal routing, high isolation, and signal crossovers are demonstrated with realized lines and couplers.

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Document Details

Document Type
Technical Report
Publication Date
Apr 02, 2006
Accession Number
ADA455588

Entities

People

  • Eric D Marsh
  • J. R. Reid
  • Richard T. Webster

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Air Force Research Laboratories
  • Electrical Engineering
  • Engineering
  • Equations
  • Fabrication
  • Films
  • Frequency
  • Impedance
  • Measurement
  • Micromachining
  • Millimeter Waves
  • Simulations
  • Three Dimensional
  • Transmission Lines
  • Waveguides

Fields of Study

  • Physics

Readers

  • Integrated Circuit Design and Technology.
  • Microwave Engineering.

Technology Areas

  • 5G
  • Microelectronics