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WiMAX Band (wimax + band)
Selected AbstractsCPW-fed circularly polarized antenna for 3.5 GHz WiMAX bandMICROWAVE AND OPTICAL TECHNOLOGY LETTERS, Issue 3 2009The Nan Chang Abstract This article presents a new configuration of the common part of two unusually coupled open loops fed by a coplanar waveguide (CPW). For each open loop, the common part is in cooperation with one extended ground line of the CPW. The two loops are coupled to yield a wideband circularly polarized antenna for 3.5 GHz WiMAX band. Gain is enhanced through use of an outside ring. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 849,851, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24172 [source] Multiband meander antenna with a backed microstrip lineMICROWAVE AND OPTICAL TECHNOLOGY LETTERS, Issue 8 2007Jae H. Kim Abstract A novel multiband meander antenna with a backed microstrip line is proposed for GSM/DCS/ISM and WiMAX triple-band operations. We have used meandering technique and U-shaped line to produce the GSM and DCS bands, respectively, and a backed microstrip line technique to produce the ISM and WiMAX band. Prototypes of the multiband antennas have been successfully implemented and good radiation characteristics in the operating frequency bands have been achieved. The effect of the backed microstrip line geometry on the return loss was also studied. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1942,1946, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22582 [source] Active measurements of antenna diversity performances using a specific test-bed, in several environmentsINTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING, Issue 3 2010Moctar Mouhamadou Abstract The diversity performances of the wireless devices operating in a multipath propagation environment are usually presented in terms of correlation coefficient, diversity gain and effective diversity gain. These parameters can be measured in reverberation chamber. This paper presents some active measurements of antenna diversity performances on a small wireless terminal in several realistic environments. The measurements were performed in the WiMax band, i.e. at 3.5 GHz, in a reverberation chamber where the channel is statistically uniform, in a real indoor propagation channel, and in an outdoor-to-indoor environment. The diversity performances are evaluated by using a specific test-bed constituted by an arbitrary signal generator and two radio-frequency digitizers. The effectiveness of diversity is presented in terms of effective diversity gain, signal to noise ratio, bit error rate and frame error rate. © 2010 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2010. [source] | ||||||||||