Transmission Loss in Coplanar Waveguide and Planar Goubau Line between 0.75 THz and 1.1 THz
Paper i proceeding, 2018

In many cases, metallic planar waveguides are required in the design of integrated circuits. However, at terahertz frequencies, metallic planar waveguides present high losses, which make necessary the use more efficient waveguides to avoid power limitations. In this work, the attenuation constant of two popular planar waveguides for terahertz frequencies, Coplanar Waveguide (CPW) and Planar Goubau Line (PGL), are compared between 0.75 THz and 1.1 THz. To measure the PGL, its transition is deembeded using a multiline Thru-Reflect-Line calibration standard. Measurement results show a lower attenuation constant across the band for a PGL (0.13 mm-1 < α < 0.39 mm-1) than for a CPW (0.68 mm-1 < α < 0.99 mm-1) when an ultra-thin substrate is used suspended in air, which greatly reduces the substrate mode coupling from the PGL. These results put the PGL as a less lossy metallic planar waveguide for terahertz applications.

Calibration

Substrates

Optical waveguides

Planar waveguides

Strips

Coplanar waveguides

Attenuation

Författare

Juan Cabello Sánchez

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Helena Rodilla

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Vladimir Drakinskiy

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Jan Stake

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

International Conference on Infrared, Millimeter, and Terahertz Waves

2162-2035 (eISSN)

1-2

2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)
Nagoya, Japan,

Styrkeområden

Informations- och kommunikationsteknik

Infrastruktur

Kollberglaboratoriet

Nanotekniklaboratoriet

Ämneskategorier

Annan elektroteknik och elektronik

DOI

10.1109/IRMMW-THz.2018.8510326

Mer information

Senast uppdaterat

2018-11-02