Four-leaf-clover-shaped antenna for a THz photomixer
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SCOPUS
- Title
- Four-leaf-clover-shaped antenna for a THz photomixer
- Authors
- Woo, I; Nguyen, TK; Han, H; Lim, H; Park, I
- Date Issued
- 2010-08-30
- Publisher
- OPTICAL SOC AMER
- Abstract
- To improve the output power of a photomixer used as a THz source, we propose a four-leaf-clover-shaped antenna structure composed of a highly resonant radiation element and a stable DC feed element. The resonance characteristics of the proposed structure were first investigated on a half-infinite substrate as a simplified radiation environment to reduce the computation time. Based on the antenna characteristics on that half-infinite substrate, the antenna structure was designed to have a maximum total efficiency and a maximum directivity on an extended hemispherical lens. The input resistance of this structure was six times that of a full-wavelength dipole, significantly improving the mismatch efficiency between a photomixer and the antenna. The terahertz output power from this structure is expected to be 2.7 times that of a full-wavelength dipole. (C) 2010 Optical Society of America
- Keywords
- WAVE GENERATION; TERAHERTZ; EMISSION; LASER
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/25334
- DOI
- 10.1364/OE.18.018532
- ISSN
- 1094-4087
- Article Type
- Article
- Citation
- OPTICS EXPRESS, vol. 18, no. 18, page. 18532 - 18542, 2010-08-30
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- There are no files associated with this item.
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