Perturbation theory-based field analysis of arbitrary-shaped microstrip patch antenna

Abstract

In this paper, the concept of perturbation theory is applied to derive a general electric field (E-field) expression for any arbitrary-shaped microstrip patch antenna. The arbitrary shape is created by adding small perturbation in a regular patch shape, which is used to find perturbed and unperturbed electromagnetic wave solutions for resultant E-field of patch antenna. Ansoft HFSS simulator is used to validate the derived field expression in curvilinear coordinates for a regular circular-shaped patch. Then the proposed field analysis is applied to develop two new arbitrary-shaped patches in C-band for desired E-field patterns.

Analysis and design of liquid antenna

“…[9][10][11][12][13] Also, there are reconfigurable antennas, capable of modifying dynamically its frequency and radiation properties in controlled manner. [14][15][16] These antennas have integrated inner mechanism for dynamic response. Some methods to induce reconfigurability in antennas are electrical (PIN diodes, MEMs, and varactors), optical (photoconductive), physical (structural alterations), material change (ferrites and liquid crystals), and so on.…”

Electro-Geometrical Analysis of Transversal V-Fold Patch Antenna

“…But the most practical and most integrable topologies of antenna which are successfully approved for several applications as satellite and defense remains the microstrip patch structure [10][11][12]. However, deeper investigations on design, simulation and test methods as proposed in [13][14][15][16][17][18][19][20][21][22][23] are still needed in the function of different configurations of patch antenna applications. The microstrip antenna theory constitutes the basic step of the design step [13][14].…”

“…In addition, a good understanding is needed for the enhancement of patch antenna performance as the bandwidth [1cross-polarizationtion [16] and efficiency [17]. For example, different design aspects of patch antenna feeding were studied [18][19][20][21]. Feeding methods of patch antennas with microstrip lines [18][19] and probes [20] were proposed.…”

“…For example, different design aspects of patch antenna feeding were studied [18][19][20][21]. Feeding methods of patch antennas with microstrip lines [18][19] and probes [20] were proposed. For the case of contact difficulties, alternative feeding methods with series-parallel and coupled slots [21] were also introduced.…”

“…As stated previously, the standard l solution for antenna integration on geometrical deformable devices is to use flexible and non-rigid microstrip antennas [24][25]. Actually, the metallic radiation part of patch antennas [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] is traditionally based on flexible metallic material. The novelty of recent ones is the use of flexible substrates [25].…”