A Printed Monopole Antenna for Triple-Band WLAN/WiMAX Applications

Abstract

A new compact design of monopole antenna for triple-band WLAN/WiMAX applications with two band-notches based on broadband antenna is presented. By introducing a stub loaded ground and two new paper clip structures etched on radiation patch, a compact overall dimension 31 mm×33 mm×1 mm and three separated operating bands effectively covering 2.4/5.2/5.8 GHz WLAN bands and 2.5/3.5/5.5 GHz WiMAX bands can be achieved. Compared with familiar U type slot, the introduced compact paper clip structure can save about 37% of dimension regions, which could effectively improve efficiency of band-notch formation. Simulated and measured results demonstrate that the proposed antenna has good dipole-like radiation characteristics with appreciable gain across the operating bands. Besides, main parameters of the two etched paper clip structures are investigated to control the positions and bandwidths of the two stop-bands, respectively, on basis of which the three working bands can be adjusted independently.

Investigation of compact dual port octagonal MIMO antenna with triple band rejection capabilities with good isolation

“…So to junk those bands in the past decade field, experts introduced multiple techniques. Initially traditional filters were used , but nowadays by introducing feed disturbance [2] slots [3][4], spiral slots [5], split-ring resonators [6] ,Uslots [7], meander line slots [8,9], metamaterial [10][11][12], capacitive loaded [13], parasitic slits [14] , parasitic strips [15] , spur lines [16], are used along with the radiating element to improve its performance.. More recently literatures report single band [17], dual band notch [18] multiple notch characteristics [19][20][21][22]. The main challenging task is to achieve the notches without altering the performance of the radiating element.…”

A Compact Semi-Circular and Arc-Shaped Slot Antenna for Heterogeneous RF Front-Ends

“…Several dual-and/or multi-band slot antenna designs have demonstrated their superior performances for the desired multi-band requirements [28,29]. A compact CPW-fed triple-band antenna for diversity applications is reported in [30], triple-band antennas in [31,32] and quad-band in [33,34] and broad-band circular polarization [35], for example. The dual-band characteristic of these kind of antennas may be achieved by joining small resonant slots to the body of the main one [36] or etching several stubs on the large slots [14].…”

A Multiband Printed Slot Antenna Loaded with Trapezoidal Slots for WLAN and WiMax Applications

“…Within this respect, many techniques are adopted to meet these challenges. The use of multi-element microstrip antenna structures has proved their ability to offer the multi-resonant behavior but have narrow bandwidths and relatively large sizes which are not suitable for the recently available systems [2][3][4]. Printed slot antennas have proved their performance to offer antenna response with enhanced bandwidths.…”