Patch Antenna For Ultra-wideband Applications Research Articles

Design of defective ground plane modified microstrip patch antenna for ultra-wideband applications

Design of defective ground plane modified microstrip patch antenna for ultra-wideband applications

Graphene based rectangular microstrip patch antenna for UWB applications

According to the findings of the article, researchers looked at graphene-based hexagonal microstrip patch antennas. In place of a U-shaped slot and an elliptical slot, an ellipse-shaped slot was cut into the surface of the hexagonal radiators that were used in the designs that were recommended. This helped to improve the radiation performance of the radiators. A frequency known as ultra-wideband (UWB) is used in the modelling process for the anticipated structures. Through the use of comparative studies, an investigation into the effect of U-shaped and elliptical-shaped slots on the radiation performance of proposed graphene antenna designs has been carried out. The use of ellipsoidal slot-loaded structures results in considerable enhancements and advancements in directivity. The impedance bandwidths for S11 antennas with a gain of 10 dB range from 0.68 to 1.63 terahertz for U-shaped and elliptical-shaped slot loaded hexagonal printed antennas, respectively. Extensive research is presented for the various characteristics of the proposed THz antenna types. The designs that were offered provide excellent impedance matching over the full operating range. This is made possible by the high reflection and VSWR values that they possess. The cutting-edge antenna design may be used for spectrum imaging, the detection of explosives, medical diagnostics, radio transmission, and the monitoring of the weather.

Simulation of T shape MSPA for UWB Application

Using the CADFEKO tool, a T-shaped Microstrip patch antenna (MSPA) with an epoxy substrate was designed and simulated to achieve the best possible result. MSPA is frequently utilized because of its numerous benefits, including its light weight, low volume, and low manufacturing cost. The antenna's bandwidth, gain, return loss, VSWR, and radiation pattern were assessed. Maximum impedance is attained at 6.85 GHz, antenna gain is 8dB, directivity is 4.5, and return loss is -10.80dB at 5.725 GHz and 12.48dB at 10.6 GHz for the T-shape rectangular Microstrip patch antenna for ultra-wideband applications. 50Ω is used to power the T-shaped Microstrip antenna. The simulated results of the proposed antenna are good radiation patterns. The return loss is less than -10 dB and VSWR is less than 2 throughout the UWB band. At 3.1 to 10.6 GHz resonant frequencies, the S11are -10.80dB,-12.48dB, and antenna efficiency is 100 % due to all losses being zero.

Modified design of microstrip patch antenna for UWB applications

Ultra-wideband (UWB) patch antenna for Ku/K band applications is presented. In this paper, a microstrip line feed has been modified to an elliptical gradient structure, and the conventional radiator patch has been developed through the use of the symmetrically circular slots. These modifications have been used to improve the performance of the antenna significantly. Upper and lower frequency ranges achieve UWB antenna performances start from 11.57 GHz to 21.45 GHz. Proposed antenna exhibits good impedance matching, which makes it convenient to work in various applications. Besides that, the reflection coefficient is reduced attained to -31.81 dB over the operating band. The antenna is developed and analyzed using the commercially available software FEKO simulator based on the method of moments (MoM). Other parameters results such as sidelobe level (SLL) and beamwidth (half power - 3 dB) are added and discussed significantly. The proposed design is fabricated and tested experimentally, and the results show that a satisfying agreement with the simulation results.

A COMPACT MACE SHAPED GROUND PLANE MODIFIED CIRCULAR PATCH ANTENNA FOR ULTRA-WIDEBAND APPLICATIONS

A compact mace shaped ground plane modified circular patch antenna for ultra-wideband applications is designed and investigated. The structure has a compact size of 14×18×1.6 mm3 and is etched out on an easily available, low-cost (FR4) flame retardant substrate with εr = 4.4, μ = 1 with 0.025 dielectric loss. The fractional bandwidth (S11 < −10 dB) of the presented antenna structure is 118% (3.1 to 12.13 GHz). The simulated result shows that the maximum gain is 3.2 decibels with maximum radiation efficiency equal to 78%. The presented compact antenna with a good radiation pattern satisfies the monopole characteristics. Measured and simulated Co-polarization and Cross(X)-polarization are in relatively good agreement with the selected operating frequencies. In order to construct the layout and stimulate the antenna's characteristic behavior over the Ultra-wideband frequency range, the CST simulator is used. The measured values validate the proposed antenna's attributes as forecasted in the CST simulation with minor deviations in frequencies. All these properties show that the proposed structure finds its applications in WiMAX-band 3.5, 5.5 GHz, WLAN-band 5.2, 5.8 GHz, X band (8-12 GHz), space communication and other wireless communication services.

A Compact Rectangular Microstrip Patch Antenna Loaded with Stubs and Defected Partial Ground Structure for UWB Systems

This paper presents the prototype and simulations of a compact rectangular microstrip patch antenna for ultra-wideband applications. The proposed antenna is printed on FR4 (Flame Retardant) substrate with relative permittivity of 4.4, dielectric loss tangent of 0.0024 and the dimensions of 57 × 25 × 1.57 mm3 . The radiating patch of the antenna is loaded with two rectangular stubs along its upper and lower edges and an equilateral triangular notch is truncated from the reduced ground plane to achieve optimum results in terms of bandwidth and reflection coefficient. It is fed along the centerline of symmetry by 50Ω microstrip feed line. The simulated return loss ( ) characteristics show that the proposed antenna has a capability of covering the wireless bands from 0.17GHz to 7.25GHz with impedance bandwidth of 7.08GHz and exhibits a peak gain of 5dB at 7.25GHz which is acceptable for UWB systems.

Microstrip Patch Antenna for Ultra-Wideband Applications

In this paper, a patch antenna for ultrawideband applications is presented. The design and performance of the antenna element is discussed. The proposed antenna is mounted on a compact FR-4 substrate having dimensions $\mathbf{20}\mathbf{x}\mathbf{30}\mathbf{x}\mathbf{1.6} \ \mathbf{mm3}$ with relative permittivity $\pmb\varepsilon \mathbf{r}=\mathbf{4.3}$ . The rectangular patch antenna is slotted with two types; rectangular and semi-circle slots. The results show that the antenna covers the frequency range of 3.1-7.5 GHz with a reflection coefficient reduced to −55 dB and a gain of 5.9 dB. The details of the simulated and measured results for reflection coefficient are presented. To analyze the effect of the slots, the surface current distribution is investigated. The performances of good impedance matching are achieved within the operating band. Simulation is carried out using CST Microwave Studio. The proposed antenna can be used for UWB applications and other radio communication services systems.

Miniaturized Spectacles Shaped Tapered Slotted Patch Antenna for UWB Applications

A compact planner patch ultra-wideband (UWB) antenna is presented in this paper. The antenna configuration consists of a spectacles-shaped patch and a slotted ground plane. Different parameters are investigated for improving the antenna’s properties and for achieving the preferred UWB band (3.1–10.6 GHz). The experimental and simulated results demonstrate that the proposed antenna acquires an operating bandwidth of 117% (3–11.5 GHz) with a stable omnidirectional radiation pattern, about 89% of average radiation efficiency and 4.2 dBi of average gain with the maximum of 5.7 dBi at 10.2 GHz.

Design and analysis of square shaped serrated patch antenna for ultra-wideband applications with single rejection band

This article studies about the design and analysis of serrated patch antenna with a slot at the ground with microstrip line feed. Comparative analysis has been carried in five and ten serrated patches at top and side edges of the square patch. All design iterations have been carried out using commercially equipped tool HFSS 13. For bandwidth enhancement a slot has been placed at the ground in all iterations in common, later the return loss and gain have been analyzed and compared for all models. Finally, the proposed modal consists of ten serrations at the three edges of the square patch where it works on the ultrawide band region with high gain when compared to all models. The proposed antenna has its applications at WiMAX, WLAN 802.11, LTE 42/43 bands and works in the region of ultrawide band(3.1GHz-10.6GHz).and having rejection at 5-6GHz

Design of Low Cross-Polarized Patch Antenna for Ultra-Wideband Applications

This paper presents the design of low cross-polarized patch antenna for ultra-wideband applications. Two patch antennas Antenna I and Antenna II are designed for lower frequency band and upper frequency band of ultra-wideband. Both antennas together produce approximately the ultra-wideband operation. The bandwidth of Antenna I is 3.51 GHz to 5.67 GHz and of Antenna II is 5.63 GHz to 9.34 GHz. The overall bandwidth of combined antenna is 3.6 to 9.2 GHz. The radiation pattern of both antennas shows the omnidirectional behavior with sufficient directivity and the cross polarization level is very low. The proposed antenna can be used for ultra-wideband applications.

A New CPW-fed Patch Antenna for UWB Applications

In this paper, the design and analysis of a compact size coplanar waveguide (CPW)-fed antenna for ultrawideband (UWB) applications is presented. The antenna has a compact size of 20×20×1.1 .5 .mm and provides a good impedance matching over the entire bandwidth of 3.2–14.3 GHz. The characteristics parameters, i.e. return loss, VSWR and radiation pattern, are analyzed using HFSS 11.0 software.

Design and Performance Evaluation of Microstrip Antenna for Ultra-Wideband Applications Using Microstrip Feed

In the modern days the development in communication systems engineering requires the development of low profile antennas that are capable of maintaining high performance over a wide spectrum of frequencies. In this review, we have designed an elementary Microstrip patch Antenna for ultra-wideband application. This technological trend has focused much effort on the basic concepts, characteristics and design of a Microstrip patch antenna. This paper explains the pattern of designs of the Microstrip patch antenna along with detailed study. A thorough analysis and observations of the problem begins with the application of the equivalence principle that introduces the unknown electric and magnetic surface current densities on the dielectric surface. Here in this technical review, our main goal is to design an elementary Microstrip antenna, which will work in the ultra-wide band range and also it should work in the desired operating frequency. Ansoft High Frequency Structured Simulations (HFSS) software is used for the elementary design of a rectangular patch Microstrip antenna and also some of the basic calculations has been done by using MATLAB. This review paper also comprises of basic parameters, types of antenna, working, fundamental concepts and characteristics as well as feeding techniques and simulation, results of Microstrip patch antenna.

A low-profile patch antenna for ultrawideband application

In this letter, a low profile stacked patch antenna is proposed for UWB operations. The antenna design is comprised of three patches; a 35° angularly folded patch feed (bottom patch), T-shaped patch (middle patch), and strip-loaded patch (top patch). The wide bandwidth is achieved with the integration of a 35° angularly folded patch feed with a T-shaped patch. The antenna's size is reduced by using the shorting wall technique. The existence of electromagnetic coupling between the T-shaped patch and strip-loaded patch further improves the impedance bandwidth. The design exhibits a compact electrical dimension of 0.12λ×0.14λ×0.08λ, where λ is the wavelength of the lowest operating frequency. The measured results showed that the antenna can achieve a bandwidth of 107.46% (3.1-10.3 GHz). Acceptable gain, stable radiation patterns, and low group delay variation in the operating band are achieved as well. These measured results signify the effectiveness of the proposed antenna configuration in the context of UWB application.

Directive Stacked Patch Antenna for UWB Applications

Directional ultrawideband (UWB) antennas are popular in wireless signal-tracking and body-area networks. This paper presents a stacked microstrip antenna with an ultrawide impedance bandwidth of 114%, implemented by introducing defects on the radiating patches and the ground plane. The compact (20×34 mm) antenna exhibits a directive radiation patterns for all frequencies of the 3–10.6 GHz band. The optimized reflection response and the radiation pattern are experimentally verified. The designed UWB antenna is used to maximize the received power of a software-defined radio (SDR) platform. For an ultrawideband impulse radio system, this class of antennas is essential to improve the performance of the communication channels.

Ultra wideband patch antenna with a novel folded-patch technique

The authors present the results of a polygonal patch antenna for ultra-wideband applications covering a frequency band from 4.14 to 13.50 GHz. The fabricated antenna achieved a 10 dB impedance bandwidth in excess of 125 with an antenna size of 0.373lambda o times0.373lambda o times0.149lambda o at its centre frequency. The antenna's impedance bandwidth is 64% higher than what is currently obtainable with state-of-the-art folded-patch techniques. The proposed patch antenna has a polygonal-shape with a rectangular slot and shorting pins. The analysis of this antenna shows that bandwidth broadening is achieved by using a rectangular slot on the patch that is fed from a folded-patch feed, whereas the reduction in antenna size is achieved through the use of two shorting pins strategically located on the radiating patch.

CPW-fed crescent patch antenna for UWB applications

A novel printed antenna for ultra-wideband (UWB) applications is presented. The antenna consists of an open annulus strip as a ground plane and an open crescent patch in the inner space of the annulus as a radiating element. The antenna is fed by a coplanar waveguide with a central strip connected to the crescent patch. The antenna has a compact structure, and the total size is 33×30×1.57 mm. A relative impedance bandwidth of 129% is achieved, which covers 3–14 GHz.

A Printed Crescent Patch Antenna for Ultrawideband Applications

A miniaturized crescent-shape microstrip antenna is proposed for ultrawideband (3-10 GHz) applications. The crescent antenna is evolved from an elliptical patch antenna by carving a circular hole inside symmetrically. The circular aperture introduces an additional antenna in-band resonance and provides wider bandwidth with more design flexibility. The radiation characteristics of this crescent antenna are investigated with full-wave electromagnetic simulations and compared with an elliptical antenna. A crescent antenna prototype that occupies only 60% area of the elliptical patch is fabricated and tested. Antenna pattern and impedance measurements show good performance over the 3-10 GHz band with consistent radiation patterns, low cross polarization, and a substantial gain. The design method is also described