Full-wavelength dipole antenna on a membrane covered with a lens for a high gain terahertz photomixer

Author

Nguyen, Truong Khang ; Ho, Thi Anh ; Han, Haewook ; Park, Ikmo

Author_Institution

Sch. of Electr. & Comput. Eng., Ajou Univ., Suwon, South Korea

fYear

2012

fDate

27-30 May 2012

Firstpage

563

Lastpage

566

Abstract

This paper presents a full-wavelength dipole antenna on a membrane covered with a lens to improve the efficiency and directivity of a terahertz photomixer. A full-wavelength dipole antenna supported by a membrane structure has low directivity. An extended hemispherical lens introduced in front of the antenna can achieve high directivity. The optimized antenna had a 3818-Ω input resistance and a 71.2% radiation efficiency at the 1.07-THz resonance frequency. The total efficiency of this structure is approximately 6.8 times that of a full-wavelength dipole antenna with almost the same directivity.

Keywords

antenna radiation patterns; dipole antennas; lenses; millimetre wave mixers; extended hemispherical lens; full-wavelength dipole antenna; high gain terahertz photomixer; input resistance; membrane structure; optimized antenna; radiation efficiency; Antenna radiation patterns; Dipole antennas; Gallium arsenide; Lenses; Resistance; Substrates; Terahertz antenna; hemispherical lens; high input resistance; membrane structure; photomixer;

fLanguage

English

Publisher

ieee

Conference_Titel

Millimeter Waves (GSMM), 2012 5th Global Symposium on

Conference_Location

Harbin

Print_ISBN

978-1-4673-1302-5

Type

conf

DOI

10.1109/GSMM.2012.6314401

Filename

6314401