Parametric analysis of slot-loaded trapezoidal patch antennas

Abstract

Slot-loaded trapezoidal patch antennas are analyzed\ud in order to achieve a multifrequency operation. A moment\ud method formulation based on new analytical entire domain basis\ud functions is developed and compared to the one involving the\ud RWG triangular discretization. The numerical results obtained\ud through the new efficient implemented code are compared to the\ud measurements showing a good agreement. A parametric analysis\ud of such antennas is also presented leading to useful design graphs\ud showing the main antenna properties (resonance frequencies,\ud cross-polarization levels, matching, etc.) as a function of the patch\ud geometrical dimensions, symmetric collocation of the slots on the\ud patch, and slot dimensions

A SOLAR CELL STACKED SLOT-LOADED SUSPENDED MICROSTRIP PATCH ANTENNA WITH MULTIBAND RESONANCE CHARACTERISTICS FOR WLAN AND WiMAX SYSTEMS

“…However, typical narrow impedance bandwidth performance of conventional microstrip patch antennas brings a significant challenge limiting the usability of these antennas when it comes to multiband/wideband applications. To this end, considerable amount of research has been conducted in the literature in order to enhance the resonance characteristics of microstrip patch antennas including capacitive slot-loaded microstrip patch antennas [9,10], stacked microstrip patch antennas [11][12][13] and suspended microstrip patch antennas [14][15][16].…”

“…A significant drawback to the second solar antenna combination topology, which is the use of solar cells as an RF radiating element, is that this technique cannot be applied for multiband/wideband applications where modification in the traditional patch geometry, such as capacitive slot-loading [9,10], is required. This is due to the requirement of the solar cells operating as an RF radiating element to be homogeneous in structure for an optimum solar performance.…”

Design of miniaturized radiating systems for GNSS applications in interference conditions

“…One of these advantages (miniaturization) is obtained by using "metamaterial-based" antennas or "metamaterial-inspired" ones. The difference among "metamaterial-based" antennas "metamaterial inspired" ones stands either using unconventional dielectric slabs (for "meta-material based" antennas), or parasitic elements/cuts nearby/inside the radiating patch (for "metamaterial-inspired" antennas) [4][5][6][7][8][9] .…”

Multi‐frequency patch antenna design via the method of moment and genetic algorithm

“…In order to improve such features without affecting antenna compactness, irregular patch shapes can be successfully employed. Though some analysis techniques have been already developed for irregular patch antennas, synthesis techniques are very difficult to be implemented (see, for instance [1][2][3]). …”

“…As an example, consider the ẑ-directed dipole source spinning about the origin as shown in Figure 1(a), where we wish to measure the far field radiated in the negative x -direction [2]. From Doppler theory, we know that the frequency measured at the observation point will shift upwards when the source is approaching the observer.…”