No abstract

A novel type of printed and doubled‐sided dipole antenna with multiband operation for wireless local area networks and worldwide interoperability for microwave access is presented. The antenna is composed of several symmetrical branch strips dipoles which are employed as resonators for multiband operation and a modified rectangular ground plane as a reflector. Prototype of the proposed antenna has been constructed and experimentally studied. The measured results of the tri‐band not only explore wide −10 dB impedance bandwidths of 20, 14, and 15% at the operating bands of 2.5, 3.5, and 5.5 GHz respectively, but also show good agreement with the numerical predictions. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1019–1022, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26705

A compact paw-shaped multiband monopole antenna for Wireless local area network (WLAN) and worldwide interoperability for microwave access (WiMAX) applications is presented. The proposed antenna is composed of a paw-shaped monopole element and a rectangular ground plane with simple configuration. This antenna can easily be fed by using a 50 ohm probe feed with SMA connector. By adjusting a few parameters of the three arms, the resonant frequencies can be easily tuned. The proposed antenna was analyzed and optimized to cover three bandwidths from 2.32 to 2.84, 3.39 to 4.34 and 5.11 to 5.91 GHz that for WLAN and WiMAX applications respectively, with the return loss of better than 10 dB. The performances of the antenna are demonstrated along with measured and simulated results. Moreover, simulated and experimental results with different parameters of the antenna are given.

Abstract-A CPW-fed UWB antenna with WiMAX and WLAN band-notched characteristics is presented in this paper. The proposed antenna is fed by a CPW structure and provides the band-notched characteristics by etching an arc slot on the monopole plate and integrating the antenna with electromagnetically coupled microstrip resonator into a single module. In order to prevent interference problem due to existing nearby communication systems within the UWB operating frequency, the two band-notches are designed to reject possible interference with the existing 3.25-3.75 GHz band for IEEES02.16 WiMAX and 5.15-5.825 GHz band for IEEES02.11a WLAN and HIPERLAN/2 WLAN The two notched bands can easily be controlled by a few geometry parameters of the arc slot and the microstrip resonator. Surface current distributions and conceptual equivalent-circuit models are used to analyze the effect of the slot and the resonator. The proposed antenna is simulated and fabricated. Moreover, the performances of the antenna are demonstrated along with simulated and measured results.

No abstract