DIPOLE ANTENNA PORT CST MICROWAVE STUDIO PATCH

Hizal, 'An inverted L-shape fed microstrip patch antenna for mobile communication,' in IEEE 21st Annual International Symp. Aboutorab, 'High-isolation XX-polar antenna,' IEEE Trans. Zong, 'A broadband dual-polarization antenna element for wireless communication base station,' in Proc. Г‡iydem, 'GSM/UMTS dual polarization base station antenna design,' in General Assembly and Scientific Symposium XXXth URSI, Istanbul, Turkey, pp. Zou, 'Dualpolarised patch antenna with low cross-polarisation and high isolation for WiMAX applications,' IET Electronics Letters, vol. Row, 'Dual-feed dualpolarized patch antenna with low cross polarization and high isolation,' IEEE Trans. Waterhouse, 'Dual polarized wide-band aperture stacked patch antennas,' IEEE Trans. Liu, 'Broadband dualpolarised antenna with high isolation for wireless communication,' IET Electron. Zhang, 'Wideband dualpolarized crossed-dipole antenna with parasitical crossed-strip for base station applications,' Progress in Electromagnetics Research C, vol. Luk, 'Wideband magnetoelectric dipole antennas with dual polarization and circular polarization,' IEEE Antennas Prop. Luk, Antennas for Base Stations in Wireless Communications, New York, USA: McGraw-Hill, 2009. Laiho-Steffens, 'The performance of polarization diversity schemes at a base station in small/micro cells at 1800 MHz,' IEEE Trans. Finally, XPD values are measured more than 10 dB in bandwidth. In addition, the maximum gain values are measured between 3 dB and 7 dB in 1.71 GHz and 2.69 GHz frequency band. Return losses for port 1 and port 2 are measured above the 10 dB and isolation between the port 1 and port 2 are measured above the 20 dB. The designed and optimized antenna produced and measured in laboratory environment. Finally, according to base station applications, antenna frequencies optimized to 1.71 GHz and 2.69 GHz. Later, meandered structure used to make antenna smaller. Because of that, by using image theory, vertical parasitic elements were added to get appropriate XPD values. Afterwards, antenna with microstrip balun feed applied but the XPD values were not appropriate to expected results. This design initially had two horizontal straight monopoles on the ground plane perpendicular to each other. The antenna has minimum of 0 dBi gain in the beamwidth of 120В° (В 60В°) at azimuth plane (П• = 0В°) along the band, and XPD values being minimum of 2 dB at 1.71-2.4 GHz for 60В° without parasitic elements are improved to 10 dB with parasitic elements. The antenna designed with CST Microwave Studio program has VSWR в‰¤ 2 within 1.71-2.69 GHz frequency band, which covers GSM 1800/3G/LTE bands. Parasitic elements are added to antenna design formed by orthogonal two compact meandered dipole above ground plane. This study is related with the design of a В± 45В° dual polarized base station antenna with improved cross-polarization discrimination (XPD) values.

Dipole antenna port cst microwave studio