Dual-band quasi-self-complementary antenna for wireless local network operation

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Abstract
This article proposes a compact (6 × 21 × 0.4 mm3) antenna with dual-band operation that satisfies the wireless local area network. To achieve optimal impedance matching for the lower and upper operating bands, the proposed antenna structure is designed as a quasi-self-complementary (QSC) type, in which the lower (2.4 GHz) operating band is excited through the loop-like structure of the proposed antenna, whereas its self-complementary counterpart (rectangular patch structure) induces the upper (5.2/5.8 GHz) operating band. Further investigation was also conducted by printing the proposed QSC antenna onto a flexible substrate of 0.063 mm in thickness. To cover both operating bands, the proposed flexible antenna was restructured to 20.5 × 8 mm2. The design and initial characteristics of the two proposed antennas were discussed in detail via simulation, and the experimental results showed satisfactory performance of both operating bands. © 2013 Wiley Periodicals, Inc. Int J RF and Microwave CAE 24:298–305, 2014.

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