Design of U-Shaped Multiline Microstrip Patch Antenna for Advanced Wireless Applications

A compact feed poly line slotted rectangular microstrip patch antenna with defected ground surface has been proposed in this paper for the wireless LANs, Bluetooth, and WiFi applications. The patch is designed based on a polyline slot and with defected ground structure. The simulated and fabricated models of demonstrated antenna exhibit better return loss, bandwidth, acceptable gain, and other antenna parameters over the required frequency range and the central frequency of 2.4 GHz is a worldwide free spectrum ISM band. The proposed antenna is fabricated using a highly sensitive PCB technique, and fabricated antenna parameters have been achieved compared to simulated results. The simulated and fabricated results conclude less than 3% error among them and owing to the proposed method, miniaturization of antenna achieved with a gain of 5 dB.