Indian Journal of Science and Technology

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Objective: To design a high gain square patch array antenna, that can be applied in the communication modules to improve the system performance. The array performance will depend on the number of elements, geometry of the array and weighting vector used in the design. From array factor, we concentrated on the reception factor of the array with strong function of geometry. Methods/Analysis: Advanced array antennas generally use the planar structure for its numerous advantages. So, a planar square patch 4X4 array antenna is proposed to operate at 2.4 GHz (IEEE 802.11b) WLAN communication application in this paper. Quarter wave transformers are been used in the design to achieve impedance matching of 50 ohms. Findings: An impedance bandwidth of 20% is achieved from the proposed design. The proposed array antenna is showing gain more than 13 dB, efficiency more than 80% with good impedance matching and radiation characteristics. Novelty/Improvement: Planar structure with simple design is the novelty in this model. The improvement in the gain and directivity is unlocking the additional applications in the communication band and providing possible ways for long distance communication.

Keywords

Array Antenna, Array Factor, High Gain, Impedance Matching, Wireless Local Area Network (WLAN).
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