Author/Authors :
R. Camblor-Diaz، نويسنده , , S. Ver-Hoeye، نويسنده , , C. Vazquez-Antuna، نويسنده , , By G. R. Hotopan، نويسنده , , M. Fernandez-Garcia، نويسنده , , and F. Las Heras Andres ، نويسنده ,
Abstract :
In this work, a sub-millimeter wave frequency scanning 8 x 1 element antenna array is presented for its use in a terahertz imaging system operating in the 220-330 GHz frequency band. The antenna array is formed by eight open ended waveguides, a phase-shifting network implemented with WR-3 rectangular waveguides and a power divider. Dielectric rods are used to improve the radiation patterns at large beam-steering angles. Prototypes of antenna arrays with and without the dielectric rods have been manufactured and experimentally characterized. A beam-steering range greater than 40° has been obtained for a frequency sweep between 270 GHz and 330 GHz.
