Design Of Rectangular Patch Antenna Research Articles

Design of Rectangular Patch Antenna on the Hilbert Fractal-shaped High Impedance Surface

The high Impedance Technique has emerged as a modern approach for high-gain microstrip antennas. A high impedance surface minimizes surface waves and provides increased gain. Instead of, a typical mushroom to design High Impedance Surface (HIS), fractal geometry can be used. Hilbert curve-based Fractal geometry minimizes physical length and keeps electrical length the same. In this work, three iterations of Hilbert curve-shaped HIS geometry are studied with emphasis on HIS application. Fractal facilitates multi-frequency operation from GSM 1800 MHz to 6 GHz Wireless applications. The antennas have a peak gain of 5.3 dbi. The simulation is conducted in HFSS, and the analysis is performed using reports like reflection coefficients, radiation patterns, and gain plots

Printed concave‐like slot for bandwidth enhancement of inset‐fed patch antenna on metallic surfaces

AbstractsA rectangular patch antenna design with fundamental TM100 mode for on‐metal applications is presented. The patch is excited by an inset‐fed microstrip feedline and optimized for better performance by varying the inset‐fed parameters. The patch is then loaded with a circular slot of radius Ry at its center to create additional resonance at TM11 mode. The radius Ry is varied to elongate the circular slot into biconcave shape, to increase its electrical length. Thus, manipulating TM11 mode with respect to TM100 mode to achieve wideband by combining the two resonances using overlap technique. Equations of the resonance of the circular slot is stated and so is the surface area of the biconcave. The resulting antenna is etched on a 130 μm‐thick RO3003 microwave laminate and stamped on a metallic pipe cladding using the pipe as the metallic ground. The realized bandwidth is enhanced by 13% with reasonable achieved directivity. The simulated and measured results agreed reasonably with marginal discrepancy.

Design of Rectangular Patch antenna with Parallel Slots for Medical Telemetry Applications

In current scenario, rectangular patch antenna is used for applications such as Mobile telecommunications, Medical telemetry, Satellite communication, AM-FM broadcasting etc. Medical telemetry is a measurement at a distance from the subject; usually the measurable evidence of phenomena under investigation is transmitted by radio signals. The drawbacks of the existing methods are high cost of fabrication due to the usage of non-common substrates and the usage of frequencies which are not in wireless communication bands. A new design of rectangular patch antenna with parallel slot is proposed for overcoming this issue. The rectangular patch antenna having length 47.63mm and width 37.9mm and thickness 1.6mm with FR4 substrate and operating frequency is 2.4 GHz for medical telemetry application in ISM band. The proposed antenna provides good return loss and achieves better gain. The simulation of rectangular microstrip patch antenna is analyzed using Ansoft/Ansys HFSS.

A Compact Multiband Rectangular Microstrip Antenna for UWB Applications

This manuscript develops the design of rectangular patch antenna with loaded on defected ground structure (DGS), which covers the entire range of ultra-wideband (UWB). The area of proposed antenna 33×35 mm2 and is printed on FR-4 plane substrate, its permittivity (ℇr) 4.2 and loss tangent (tanδ) is 0.02 at entire frequency range. Proposed structure renders wider impedance bandwidth extended from 2 GHz to 10.7 GHz at < -10 dB return loss (VSWR< 2) with multi-bands. The UWB antenna suitable for UMTS 2.1 GHz, WLAN 3.5 GHz, WiMAX 5.8 GHz, and X-band 7.5 GHz applications. The parameters of antenna such as loss of return are reduced, and width of band, as well as gain in VSWR, is improved to an acceptable limit with reasonable radiation pattern by means of CST V.17 EM simulator. The results from simulation and experiment results are almost similar to acceptable limit.

Dual-band Rectangular Microstrip Patch Antenna for LTE and BWA Application

This paper proposes a design of rectangular patch antenna used for Long Term Evolution (LTE) networks communication and Broadband Wireless Access (BWA). The antenna can operate in dual-band at the frequency of 2.3 and 3.5 GHz. The proposed antenna dimension has a patch size of 39.6 mm × 29.8 mm, a feedline length of 19 mm, and a 1.4 mm channel width. Some parameters are used for the antenna in terms of bandwidth, VSWR, return loss, impedance, and gain. This antenna has a directional radiation pattern. At 2.3 GHz frequency obtained a gain of 3.612 dB, VSWR 1.07, bandwidth of 60 MHz, return loss of -20.00 dB, and an input impedance of 48.651 + j2.561Ω. While at the frequency of 3.5 GHz obtained a gain of 1.00 dB, VSWR of 1.33, bandwidth of 66 MHz, return loss of -16.90, and an input impedance of 46.258 + j4.897 Ω. Adjusting the antenna dimensions, either the patch dimension, and the feeder line dimension, can generate the desired working frequency as well as generating predefined ideal parameters.

The Strip-Ground Rectangular Patch Antenna

To imitate the broken situation of the conductive threads of the wearable antenna, a strip-ground design of rectangular patch antenna with the conventional substrate is presented to investigate the change of the antenna performance, where the ground is sliced along its E-plane. The strips are symmetrical along the center line of the width of the patch, and the gap ratio of the gap to the solid ground varies with the change of gaps. The conventional patch antenna is used as a reference for comparison with the stripe-ground antennas. And the effect of the coaxial cable, the changes of the impedance, and the cross-polarization of the antenna are investigated. Several antenna prototypes are fabricated and their measured results are in good agreement with the simulations. These results show that the gaps change the performance of the strip-ground antennas, but they can work well if the gap ratio is less than 1 : 4.

A Design of Rectangular Patch Antenna with Fractal Slots for Multiband Applications

The design of rectangular patch antenna with fractal slots is presented in this paper. For designing the antenna FR4 epoxy substrate with thickness 1.6mm and relative permittivity of 4.4 is used as substrate. The resonant frequency used for designing the proposed antenna is 2GHz. Three iteration of proposed antenna is designed and simulated by using HFSS V13 software and different parameters of antenna such as return loss, gain VSWR and radiation pattern are analyzed and observed. The simulated result shows that the designed antenna works on eight different resonant frequencies where the return loss is below -10dB with VSWR less than 2 which is the desired condition for the antenna to work efficiently for practical applications. The designed antenna can be used for different wireless applications in frequency bands such as Lband, S-band, C-band and X-band.

Finite Element Modeling and Design of Rectangular Patch Antenna with Different Feeding Techniques

The finite element modeling of three dimensional structures is important for researchers especially in the field of antennas and other domains of electromagnetic waves. This paper presents a finite element calculations and numerical analysis for the microstrip patch antennas. In this paper, two different designs have been modelled and analyzed and both designs are based on the rectangular patches. The feeding point of one design is inside the patch while the other design contains feeding point outside the patch is T shaped. The computational analysis showed some interesting results for radiation pattern and far field domain. For these designs, the characteristic impedance taken is 50 Ω and the operating frequency domain is 1.4 to 1.7 GHz. The microstrip patch antennas are encapsulated in the inert spherical atmosphere of 20 mm thickness containing air inside it.

Computer Aided Design of Rectangular Patch Antenna for Wimax Operations

Computer Aided Design of Rectangular Patch Antenna for Wimax Operations