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Compact microstrip-line-fed ring monopole antenna with tuning strip for 5 GHz WLAN operation

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1 Author(s)
Liu, W.-C. ; Dept. of Aeronaut. Eng., Nat. Formosa Univ., Yunlin, Taiwan

A novel compact and simple microstrip monopole antenna for 5 GHz wireless local area network (WLAN) operation is proposed. To excite a resonant mode in the operating band, a tuning strip is added to the antenna, which consists of a rectangular ring microstrip and a top loaded vertical strip, and is fed by a 50 Ω microstrip line. The effects of the added strip to the impedance matching have been studied. A constructed prototype of the proposed antenna has been tested and bandwidth of about 930 MHz ranging from 5.03 to 5.96 GHz, monopole-like radiation pattern, and average gain of greater than 2.6 dBi over the operating band have been obtained.

Published in:

Electronics Letters  (Volume:41 ,  Issue: 15 )