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Slits‐loaded microstrip antennas for circular polarization
Author(s) -
Nasimuddin N.,
Qing X.,
Chen Z.N.
Publication year - 2010
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.25417
Subject(s) - microstrip antenna , patch antenna , optics , microstrip , radiator (engine cooling) , axial ratio , radiation pattern , square (algebra) , circular polarization , physics , return loss , microwave , antenna (radio) , electrical engineering , engineering , telecommunications , geometry , mathematics
Novel diagonally slits‐loaded compact microstrip antennas are proposed for circular polarization (CP). A group of four slits is loaded on the square patch radiator for compact antenna size with CP radiation. The slit with unequal sizes loaded on square patch in diagonal directions is used to achieve CP radiation. The combined V ‐shaped and square slits, diagonally loaded, microstrip antenna is compact when compared with V ‐shaped slits loaded microstrip antenna. The measured 10‐dB return loss and 3‐dB axial‐ratio bandwidths are 3.55% and 0.82%, respectively, for a combined V ‐shaped and square slits loaded microstrip patch antenna. The overall size of the antenna is 0.256λ 0 ×0.256λ 0 ×0.0136λ 0 at 2.55 GHz. The proposed slits‐loaded patch radiator is useful for compact circularly polarized microstrip antenna and array designs. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 2043–2049, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25417