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A novel reconfigurable microstrip patch antenna with frequency and polarization diversities
Author(s) -
Zhang PengFei,
Liu ShiZhong,
Zhao Shufen
Publication year - 2015
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.29120
Subject(s) - microstrip antenna , patch antenna , microstrip , reconfigurable antenna , circular polarization , polarization (electrochemistry) , physics , pin diode , electrical engineering , frequency band , optics , feed line , engineering , diode , optoelectronics , antenna (radio) , coaxial antenna , chemistry
A single‐fed microstrip patch antenna with frequency and polarization diversities is presented in this article. The proposed antenna consists of a square patch fed along its diagonal line with four parasitic stubs added around its four sides connected by four PIN diodes. The center of edges of two stubs far away from the feed point is connected to ground via another two diodes, while those of the other two stubs are connected to ground via capacitors. By turning these diodes on and off, the antenna has five different operating states. It is capable of switching between right hand circular polarization and left hand circular polarization in the frequency band (2.422–2.448 GHz), and also can operate at two frequency bands with horizontal and vertical polarization or vertical and horizontal polarization, respectively. In addition, it can radiate 45° linear polarization as a traditional patch antenna fed along its diagonal line. The measured results verify the reconfigurable characteristics of the antenna and demonstrate that it is a good candidate for wireless communication applications. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:1494–1500, 2015