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Analysis of L‐strip proximity fed rectangular microstrip antenna for mobile base station
Author(s) -
Meshram Manoj Kumar
Publication year - 2007
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.22634
Subject(s) - ground plane , microstrip antenna , standing wave ratio , patch antenna , radiation pattern , microstrip , optics , microwave , physics , materials science , antenna (radio) , acoustics , electrical engineering , engineering , telecommunications
A wide‐band L‐strip proximity fed rectangular microstrip antenna is proposed and investigated both theoretically and experimentally. The radiating patch is located about 0.1λ 0 (16.5 mm) above the ground plane. The broadband characteristic of antenna is achieved by employing a thick substrate (0.1λ 0 ). Numerical results for the input impedance, VSWR, and co‐ and cross‐polar radiation pattern are presented and compared with the measured results. Good agreement is obtained between computed and measured results. The effects of the geometric parameters of the L‐strip like length of the vertical and horizontal portion of the strip are investigated. It is found that the antenna attains 48.36% impedance bandwidth (SWR ≤ 2) (theoretically) and 56.67% (experimentally) for optimized antenna design. The H‐plane cross‐polarization level is quite high (−16 dB) especially at (computed θ ≈ 60°, and measured θ ≈ 40°) whereas the E‐plane cross‐polarization level is very low. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1817–1824, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22634