Slot Patch Antenna Design

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Design Ideas for Printed and Microstrip Antennas

Note:

Design

Slot Patch Antenna Designs

Many of the antennas presented below relate to areas in which a wide variety of patents have been granted.

A design and simulation of circular shaped microstrip antennas using slot, slit geometries for wireless communication is proposed. Using this design more than 50% impedance bandwidth is obtained. The antennas are fed by coaxial probe method. This paper presents the simulated results of antennas return loss parameters, gain, directivity and efficiency.

Design

It should not be assumed that because a technique or physical structure is described here it is free of patents or other commercial Intellectual Property.

  1. Antenna Design The dimensions of the rectangular patch with T-slot antenna is 108 X 52 mm2. The height (h) of air substrate between patch and ground plane is 7 mm. The dimension of the T-slot is as shown in the Figs.
  2. ANTENNA DESIGN AND ITS EQUIVALENT CIRCUIT The geometry of the proposed microstrip line feed slot-loaded antenna is shown in Figure 1. The proposed antenna consists of microstrip line feeding, notches, and it is loaded with two parallel slots. The design speciļ¬‚cation of antenna is given in the Table 1.
  3. Patch antennas incorporating a U-shaped slot are well-known to have relatively large (about 30%) impedance bandwidths. This work uses characteristic mode analysis (CMA) to explain the impedance behavior of a classic U-slot patch geometry in terms of coupled mode theory and shows the relevant modes are in-phase and anti-phase coupled modes whose resonant frequencies are governed by coupled mode.

They are presented here only for information and educational purposes.

-Ground Plane Effect on Printed Antennas

-Planar Antennas Selection Chart

-Basic Microstrip Antenna Shapes

Circular Patch Antenna Design

-Basic Printed Slot Antennas with Feed Structures

Patch Antenna Design

-Comparison of Microstrip Patch and Slot Antennas

Ultra wide band is rapidly advancing as a high data rate wireless communication technology. As is the case in conventional wireless communication systems, an antenna also plays a very crucial role in UWB systems. However, there are more challenges in designing a UWB antenna than a narrow band one. A suitable UWB antenna should be capable of operating over an ultra-wide bandwidth as allocated by the FCC. At the same time, satisfactory radiation properties over the entire frequency range are also necessary. This thesis focuses on UWB antenna design and analysis. Studies have been undertaken covering the areas of UWB fundamentals and antenna theory. In recent years, the U-slot patch antenna established itself as a versatile, low profile and cost effective antenna that can be finetuned for ultra-wideband operations. The main objective of this thesis is to propose an effective practical design procedure to design U-Slot antenna and provide physical insight into the design using full wave analysis methods. This research work focuses on developing a novel scheme to design wideband U-Slot antenna. To validate the design technique antenna is fabricated and measured results are compared with the simulated to assess the performance. In this dissertation, effect of reactive loading on probe fed, single layer, U-Slot loaded microstrip antenna is investigated using Theory of Characteristic Modes (TCM). Detailed analysis of reactive loading due to feed location and arm-angle variation is presented. Optimized reactive loading has been shown to produce a modified U-Slot structure without increasing any cost and complexity. The optimized loaded antennas are wideband with a relatively stable radiation pattern. Furthermore, we propose an optimization guideline for a wide band design with stable radiation patterns.