Wideband double-fed planar monopole antennas

A Novel Omnidirectional Broadband Planar Monopole Antenna With Various Loading Plate Shapes

“…Therefore, in order to ensure the usefulness of the proposed antenna, the time domain response of antenna must also be examined. Based on the previous results, the proposed antenna is assumed to be excited by two wideband signals corresponding to UWB (3.1-10.6 GHz) and higher-band (11)(12)(13)(14)(15)(16)(17)(18).…”

“…The monopole metal plate antenna has a small width, 12 mm, placed over a small circular ground plane of radius 50 mm. These dimensions are smaller than those reported in the literature [6][7][8][9][10][11][12][13][14][15][16]. Two types of plate loading shapes, rectangular and cylindrical, are simulated via software package CST, and samples are fabricated and tested.…”

“…The requirements include a broad impedance bandwidth, omnidirectinal radiation patterns, constant gain and group delay, a stable transmit-receive transfer response and low pulse distortion, [1][2][3][4][5]. Among the many types of antennas that can provide wideband performance, the planar metal monopole antenna [8][9][10][11][12][13][14][15][16][17][18][19] exhibit excellent bandwidth as well as pattern performance. Broadband planar monopole (PM) antennas have found wide spread application in wireless communication services due to their attractive features like simple geometry, low profile, ease of fabrication, very low cost and omnidirectional pattern, but they usually show the directional radiation property at high operating frequencies due to their structural asymmetry.…”

Reduction of ground-plane-dependent effects on microstrip-fed printed rectangular monopoles

“…Printed circular disc monopoles have recently been shown to be a good candidate for ultra-wideband (UWB) systems [9]. A dual-feed mechanism has been proposed for rectangular shapes, which improves polarisation purity, while maintaining very wide bandwidth [10]. It is well known that monopole-type antenna performance is dependent on ground-plane effects [11] and an evaluation of the dependence of printed strip monopole performance on ground-plane size has been carried out [12].…”

Numerical Analysis of a Small Ultra Wideband Microstrip-Fed Tap Monopole Antenna

“…In the last few years, researchers have investigated several kinds of microstrip slot and printed antennas for UWB applications [2][3][4][5][6][7][8][9][10][11][12][13][14][15]. One of the best antennas in the last decade is the tap monopole antenna.…”