Journal
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
Volume 61, Issue 9, Pages 4831-4835Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2013.2265216
Keywords
Circular polarization; microstrip; multi-band antenna; slot antenna
Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2012-0003052]
- National Research Foundation of Korea [2011-0009815] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The design of a triple-band circularly polarized hexagonal slot antenna with L-shaped slits is presented in this study. By adding three L-shaped slit arms to the hexagonal slot, circularly polarized radiation is achieved at three different frequencies. The proposed slot antenna is excited by a simple tapered microstrip feeding line. A conducting reflector is also used to enhance the antenna gain. The measured -10 dB reflection bandwidths are 33.16% (3.22-4.5 GHz) and 22.72% (4.76-5.98 GHz). The measured 3 dB axial ratio bandwidths for the triple bands are 1.7%, 3.86%, and 5.23%, respectively. The measured peak gains within the 3 dB axial ratio bands are 5.5 dBic, 4.63 dBic, and 6.77 dBic.
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