Journal
APPLIED PHYSICS LETTERS
Volume 96, Issue 21, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3437091
Keywords
resonance; slot antennas; substrates
Categories
Funding
- Korea Science and Engineering Foundation (KOSEF) [R11-2008-095-01000-0]
- Korea government (MEST) [2009-0071309]
- KICOS [K20815000003]
- Seoul Science Fellowship
- Seoul RBD Program [10543]
- National Research Foundation of Korea [2009-0071309] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We investigate resonance behaviors of optically thin metallic slot antennas on finite substrates in terahertz frequency regime. By carefully analyzing theoretical and experimental results, we observe that slot antennas fabricated in a gold film with a thickness below the skin depth of gold show blueshifted resonance frequencies for the increasing slot width, while the opposite resonance behaviors appear when the slot antennas are perforated in perfectly electric conductor. In addition, we find that for slot antenna sustained by a finite substrate its thickness and the slot width are additional crucial factors determining the resonance frequency of slot antennas. (C) 2010 American Institute of Physics. [doi:10.1063/1.3437091]
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