Journal
PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER
Volume 132, Issue -, Pages 215-232Publisher
EMW PUBLISHING
DOI: 10.2528/PIER12072305
Keywords
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Funding
- Ministerio de Ciencia e Innovaci'on of Spain/FEDER and FEDER [IPT-2011-0951-390000, TEC2011-24491]
- CONSOLIDER-INGENIO [CSD2008-00068]
- Gobierno del Principado de Asturias (PCTI)/ FEDER-FSE [AP2009-0438, EQUIP08-06, FC09-COF0912, EQUIP10-31, PC10-06, BP10-031]
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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 degrees has been obtained for a frequency sweep between 270 GHz and 330 GHz.
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