A Study of a Compact Microstrip-Fed Uwb Antenna With an Open T-Slot

Abstract

Abstract-In this paper, a compact and simple microstrip-fed slot antenna is proposed for ultra-wideband (UWB) applications, which consists of a circular patch and an open T-slot to realize the microstripline to slot transition well over a widened frequency range. The simulations and measurements show that this simple structure with the novel design generates a broadband impedance bandwidth of 10 dB return loss from 2.5 to 12.5 GHz (BW = 133.3%) adjustable by variation of its parameters. Details of the antenna design and experimental results of the constructed prototype are presented. In addition, a geometric parameters study of the proposed antenna is able to provide more useful information for antenna design.

Study on a Miniature Uwb Wafer-Dipole Printed Antenna Fed by Balanced Micro-Strip Line

“…Whereas in this paper, the symmetric dipole and quasi-microstrip line-to-balanced-microstrip line feeding structure are adopted in design of the proposed antenna and the balanced feeding problem in UWB has been successfully solved. In the direction orthogonal with polarization, the electrical level is 5 ∼ 10 dB higher than traditional monopole UWB antennas [12][13][14]. In addition, the antenna size is miniature and the length in polarization direction is just 40% of operating wavelength of the lowest frequency, which is also smaller than that of traditional dipole antenna.…”

“…Moreover, the proposed antenna obtains the maximum radiation in the direction perpendicular with polarization, which is different from the monopole wideband antennas in Reference [12][13][14]. In their designs, owning to the effect of finite ground, the maximum radiationdirection of monopole antenna is not easy to control and usually is not in the direction orthogonal with polarization.…”

Studies of Power-Combining of Open Slot Antenna Arrays

“…A quarter-wavelength open slot cut in the finite ground plane and fed by a microstrip transmission line, a wide impedance bandwidth and bi-directional radiation are provided [8][9][10][11][12][13][14][15][16][17]. It is different from the conventional shorted slot antenna resonating at a half-wavelength.…”

Design of an Ultra-Wideband Antenna Using Boolean Differential Evolution Algorithm

“…Recently, many antenna designs are developed to realize UWB operation, among which printed wide slot antennas have been regarded as popular candidates [1][2][3][4][5]. All these antenna designs have attempted to change the coupling between the feed line and the slot by designing special shapes for the slot or for both the slot and feed line.…”