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Reduction of cross polar radiation of a dual trace omnidirectional microstrip antenna array by using dumbbell‐shaped resonator
Author(s) -
Ghosh Chandan Kumar,
Parui Susanta Kumar
Publication year - 2014
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.28037
Subject(s) - omnidirectional antenna , optics , microstrip antenna , dumbbell , radiation pattern , antenna (radio) , materials science , return loss , patch antenna , physics , acoustics , telecommunications , computer science , medicine , physical therapy
A compact dual trace omnidirectional microstrip antenna array (DTOMAA) has been designed for WLAN application. The array is then integrated with dumbbell‐shaped resonator (DSR) for reducing cross‐polar (XP) radiation. The antenna is composed of five rectangular‐shaped patch elements arranged alternately on the top and bottom surfaces of the substrate. The antenna exhibits a gain of 12.0 dBi, band width (BW) of 250 GHz, and return loss (RL) of −26 dB. By the introduction of DSR, the XP level is reduced by 7.0 dB without affecting other characteristics like copolar radiation, resonance frequency, and BW of the array. Simulated results show that the proposed antenna offers good impedance matching, high gain, and bandwidth. The simulation results are in good agreement with the measured values. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:141–145, 2014