Open AccessMultiband compact antenna for near‐field and far‐field RFID and wireless portable applications
Author(s) -
Forouzannezhad Parisa,
Jafargholi Amir,
Jahanbakhshi Alireza
Publication year - 2017
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2016.0378
Subject(s) - antenna measurement , radiation pattern , electronic engineering , omnidirectional antenna , antenna (radio) , microstrip antenna , antenna gain , electrical engineering , antenna efficiency , computer science , engineering
This study presents a multiband compact microstrip antenna for portable wireless applications. The proposed antenna, in addition to wireless local area network and a global positioning system (GPS) channels, is utilised for inductive and capacitive near‐ and far‐field ultrahigh‐frequency and 2.4 GHz radio frequency identification (RFID) applications. The fabricated antenna works at 890 to 933 MHz, GPS‐L1, and 2.4 GHz. Its linearly polarised radiation pattern provides a 1.2 to 2.5 dBi gain through the antenna bandwidth. A comparative study with other passive RFID reader conventional antennas shows that the proposed structure provides strong near E‐ and H‐fields and simultaneous good impedance matching for far‐field applications. Design details, simulated results, and a fabricated prototype are presented. The experimental results including radiation patterns, peak gain, and efficiency of the proposed antenna are presented. Comparisons between the simulation and measurement results show that the proposed antenna has a reasonable gain and radiation patterns.