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Compact dual‐polarized microstrip antennas
Author(s) -
Row JeenSheen,
Yeh ShihHuang,
Wong KinLu
Publication year - 2000
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 - 10.1002/1098-2760(20001120)27:4<284::aid-mop21>3.0.co;2-l
Subject(s) - microstrip antenna , patch antenna , microstrip , optics , folded inverted conformal antenna , physics , square (algebra) , coaxial antenna , antenna (radio) , optoelectronics , electrical engineering , materials science , engineering , geometry , mathematics
Dual linearly polarized operations of a compact slot‐loaded square microstrip antenna are experimentally investigated in this paper. Four symmetrical bent slots are embedded in the square patch, and placed in parallel with the patch's central lines or diagonals to achieve lowered operating frequencies of the two linearly polarized radiations(0 and 90° polarizations or ±45° slanted polarizations), which results in a reduced antenna size at a fixed operating frequency. Experimental results show that, for such a compact dual‐polarized microstrip antenna with an inexpensive FR4 substrate, isolation between the two feeding ports better than 35 dB can easily be obtained, which is also better than that of a corresponding unslotted dual‐polarized square microstrip antenna. In addition, the cross‐polarization level in the E ‐ and H ‐plane patterns for the compact dual‐polarized microstrip antenna studied is about as good as that of an unslotted square microstrip antenna. © 2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 27: 284–287, 2000.