Y-shaped monopole antenna with dual-broadband operation for WLAN

Abstract

A novel dual‐broadband Y‐shaped monopole antenna with dual shorted I‐shaped strip‐sleeves for 2.4/5.2/5.8‐GHz wireless local area networks (WLANs) is proposed. Dual I‐shaped strip‐sleeves are introduced to be shorted with the ground plane to excite the upper resonant mode for operating at the 5.8‐GHz band. The obtained impedance bandwidths reach about 48.5% for the 2.4‐GHz band and 35.5% for the 5‐GHz band, which meet the required bandwidth specifications of IEEE 802.11a/b/g standards. The measured peak antenna gains for the operating frequencies across dual WLAN bands are measured to be 4.7 and 4.9 dBi, respectively, with gain variations within 0.5 dBi. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 1476–1480, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21735

Planar compact triple-band monopole antenna for IEEE 802.16m WiMAX application

“…The selected length (L7 + L8) of the L-shaped shorted strip is 18.8 mm, to approximate the 0.23 wavelength in the 3.6 GHz operation band. The length is similar to that in the design of a conventional quarter-wave monopole antenna presented in [23,24]. As the resonant mode in the 5.1 GHz band is excited as the fourth operating frequency, the impedance bandwidths for the higher operating band are increased to meet the bandwidth requirement (5250-5850 MHz) by setting the total length (L2 + L3) of the L-shaped driven monopole strip (point A → point H) to about 14.5 mm, which approximates a 0.25 wavelength in the 5.1 GHz band.…”

“…The total length (L4 + L5 + L6) of the C-shaped parasitic strip is set to 29.4 mm to approximate the 0.33 wavelength of the 3.4 GHz bands and is slightly longer than the 0.25 operating wavelength due to the coupling effects of the C-and L-shaped monopole strips. Next, by simply shorting the L-shaped conducting strip (point F → point G) to the ground plane as described in [23,24], an additional resonant mode for 3.6 GHz WiMAX operation is easily excited by capacitive coupling to the horizontal arm (L11) of the C-shaped driven monopole strip (Section BC). The resonant operating frequency can also be adjusted by varying the horizontal length (L8) of the arm of the L-shaped shorted strip, which changes the capacitance between the dual horizontal arms of sections BC and FG.…”

A double-sided printed Y-shaped dipole antenna for UWB communications

“…In addition, with the use of this kind of printed patch antennas, an embedded antenna for the system can be obtained; In addition to printed patch antenna, printed monopole antennas having the trapezoid-like feed [1], Y-like radiating wing [2], used the triangle parasitical element [3], and so on. Among these structures, simply by loading a half conducting wing to a Y-shaped dipole, multi-band operations for a printed dipole antenna can be easily obtained [4].In this article, a novel printed Y-shaped dipole antenna for ultra-wideband (UWB) operation is presented.…”

“…Among these structures, simply by loading a half conducting wing to a Y-shaped dipole, multi-band operations for a printed dipole antenna can be easily obtained [4].In this article, a novel printed Y-shaped dipole antenna for ultra-wideband (UWB) operation is presented. Unlike the conventional Y-shaped antennas [2], one half of the proposed Y-shaped dipole was printed on one side of a microwave substrate. On another side, the other half was printed in opposite direction.…”

Design of Wideband Inverted Sinc Shaped Monopole Antenna for Wireless Applications

“…Many printed strip monopole antennas have been designed for the wireless applications. Important structures among them are printed strip antenna [2], wideband printed monopole [3,4], monopole antenna with dual strip [5], Y-shaped antenna [6,7], Trident-shaped [8], T-shaped [9] monopole with L shaped sleeve, V-shaped antenna [10], S-shaped folded strip monopole antenna [11], a sinusoidal shaped antenna [12][13][14] etc. Most of these antennas have complex geometrical shapes and involve difficult design steps.…”