NOVEL DUAL-BAND FABRY-PEROT CAVITY ANTENNA WITH LOW- FREQUENCY SEPARATION RATIO

A new dual-band Fabry-Perot cavity (FPC) antenna con- sisting of a partially reflective surface (PRS) superstrate and an artifi- cial 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 enclos- ing 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 perfor- mance is also analyzed. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 1869 -1872, 2009; Published online in Wiley Inter- Science (www.interscience.wiley.com). DOI 10.1002/mop.24509