COMPACT, SELF-ISOLATED 2.4/5-GHZ WLAN ANTENNA FOR NOTEBOOK COMPUTER APPLICATIONS

A simple and compact, self-isolated printed antenna able to operate in the 2.4 GHz (2400– 2484 MHz) and 5GHz (5150–5825 MHz) wireless local area network (WLAN) bands in notebook computers is introduced. The design is built on a low-cost substrate with the dimensions 6mm×30mm (about 0.05λ×0.24λ at 2.4 GHz) and comprises a symmetrical coupled-fed loop and two parasitic shorted strips. For size reduction, the 2.4 GHz loop is loaded with a pair of L-shaped stubs above the feeding and coupling T strip. The parasitic strips shorted on both sides of the coupling T strip are further added to generate the 5GHz band resonance. The results show that good radiation characteristics can be obtained in the bands of interest. In addition, when grouping three proposed designs with a gap of 4mm between them, the results for each antenna impedance bandwidth, the isolation between any two of the three designs, and the envelope correlation coefficient (ECC) are also satisfactory.