A CPW-Fed Compact UWB Microstrip Antenna

Miniaturized Uwb Monopole-Like Slot Antenna With Low Un-Roundness of H-Plane Radiation Patterns at High-Frequency Band

“…Some of these techniques use genetic algorithms optimization [10][11][12], slots [13,14], coupling and shorting [15], etc. The proposed antenna with trapezoidal slots has more compact physical size than the antennas presented in [5,[7][8][9] seen from Table 1. Nevertheless, the omnidirectional radiation performance of the antennas in [5][6][7][8][9] in the high frequency band is deteriorated.…”

“…The proposed antenna with trapezoidal slots has more compact physical size than the antennas presented in [5,[7][8][9] seen from Table 1. Nevertheless, the omnidirectional radiation performance of the antennas in [5][6][7][8][9] in the high frequency band is deteriorated. Since omnidirectional radiation characteristics are required in the UWB wireless system.…”

“…Hence, various types of monopole-like slot antennas have been investigated in recent years [5][6][7][8][9]. The UWB characteristic is obtained by an M-shaped radiation patch together with a rectangular slot ground plane in [5].…”

A Novel Structure and Design Optimization of Compact Spline-Parameterized UWB Slot Antenna

“…A number of techniques have been developed to alleviate this difficulty, such as various ground plane modifications (e.g., I-shaped [6] and L-shaped stubs [7], protruded ground plane structures [8], slits below the feed line [7], stripline-fed designs [9], etc.) but also slot and quasi-slot structures [10].…”

“…This is not only because of the fact that multiple parameters cannot be effectively handled this way but, most importantly, because a typical design flow aims at obtaining an acceptable level of the in-band reflection (and, perhaps, other important characteristics). A small size is normally a byproduct of the geometrical modifications introduced into the design, but not the effect of explicit minimization of the antenna dimensions through numerical optimization [10].…”