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Novel dual‐band Fabry‐Pérot cavity antenna with low‐frequency separation ratio
Author(s) -
Kim Dongho
Publication year - 2009
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.24509
Subject(s) - fabry–pérot interferometer , antenna (radio) , materials science , multi band device , microwave , conductor , optics , optoelectronics , substrate (aquarium) , radiation , electrical engineering , telecommunications , engineering , physics , composite material , wavelength , oceanography , geology
A new dual‐band Fabry‐Pérot cavity (FPC) antenna consisting of a partially reflective surface (PRS) superstrate and an artificial magnetic conductor (AMC) substrate is proposed for low‐frequency separation ratio. The main purpose of this antenna is to introduce more than −20 dB rejection band in between two very closely located service bands (up‐ and downlink bands) of Korean personal communication service (PCS). Additionally, with the help of metallic side walls enclosing all the openings between the superstrate and the substrate, we can obtain more than 10 dB realized gain throughout the two operation bands. Moreover, the selective behavior of the gain near the pass bands is highly increased and the back radiation is reduced remarkably. The effect of attaching the superstrate to the side walls on antenna performance is also analyzed. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 1869–1872, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24509