Journal
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
Volume 13, Issue -, Pages 1684-1688Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2014.2345564
Keywords
Coplanar waveguide (CPW)-fed antenna; four-band antenna
Funding
- National Natural Science Foundation of China [U1201256, 61201042]
- National 863 Program of China [2012AA02A604]
- Guangdong Innovative Research Team Program (GIRTF-LCH-T) [2011S013]
- Next Generation Communication Technology Major Project of National ST [2013ZX03005013]
- Low-cost Healthcare Programs of the Chinese Academy of Sciences
- International Science and Technology Cooperation Program of Guangdong Province [2012B050200004]
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A novel four-band coplanar waveguide (CPW)-fed antenna is designed for RFID/WiMAX/WLAN applications. The design is optimized to operate at 0.945, 2.50, 3.50, and 5.80 GHz using the finite element method. In this design, two U-shaped, two F-shaped, and four L-shaped branches are used as additional resonators to achieve multiband operation. Simulated results show that the 30 x 30-mm(2) antenna achieves less than -10 dB reflection coefficient at the targeted frequencies. Measured results are given to validate the antenna's performance. Although the proposed antenna attenuates a bit at some frequencies, measured S-11 is less than -6.5 dB at all frequencies, and it is less than -19 dB at 2.50 GHz.
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