Design and Implementation of a Microstrip Patch Antenna for WLAN 802.11b Communication StandardDownload PDF
Microstrip patch antennas have been studied extensively over the past two decades because of its low profile structure, light weight and low cost. They have many advantages over conventional antennas, which make them suitable for a wide variety of applications. However, bandwidth has been a major drawback for this type of antennas. This paper presents the guidelines for constructing a square patch antenna in 2.4GHz frequency for WLAN 802.11b application with design equations and Microwave office 2006 software (AWR) for design simulation to get the best parametric design, then comparing with a slotted version of the corresponding antenna having a slotting shape of the letter (k) in the English alphabet has been put it in different places for best result. The design analyses will include the return loss, bandwidth, radiation pattern, HPBW, gain, co and cross polar isolation parameters. The square non-slotted antenna was well made following the exact design equation results that lead the antenna to have a return loss of about -47dB and about 6.8% bandwidth, 76o Half Power Beam Width in the desired operating frequency.
Keywords: Microstrip patch antennas, Coaxial Feed, Return Loss, Bandwidth, Antenna Radiation pattern, HPBW, Gain, Co-polar isolation, Cross-polar isolation.