Design of Triband Vivaldi Antenna for UWB Application (original) (raw)

New Tapered Slot Vivaldi antenna for UWB Applications

A Simulation of a small sized antipodal Vivaldi antenna for ultra-wideband (UWB) applications is presented in this paper. By using commercial electromagnetic simulation software CST Microwave, some parameters like return loss (S11), Voltage Standing Wave Ratio (VSWR), radiation pattern has been performed to test the validity of simulation and verify eligibility of the antenna for UWB systems. The antenna design with dimensions of 58×60 mm achieves satisfactory impedance matching and radiation across the frequency band from 2.14 to 11.33 GHz with more than 136% fractional bandwidth.

Design, Analysis and Evaluation of Results of Vivaldi Antenna for Millimeter Band Application

Characteristics of the antenna is one of the most important factors which should be considered in millimetre band. Extremely high frequency (EHF) has a number of applications that make it attractive for a variety of applications such as ground penetrating radars (GPR), remote sensing and phased arrays. This paper offered the design of a tapered slot Vivaldi antenna for millimetre wave application of which operates in GHz to achieve high performance in terms of bandwidth and directivity. Designed Vivaldi Antenna works in the frequency band of 42.2-50 GHz. All simulations are carried out by CST microwave studio software to obtain the voltage standing wave ratio (VSWR). Obtained VSWR Ranges from 1 to 2 and high directivity level ranges from 5.3 dBi at 45 GHz to 5.47 dBi at 48.5-50 GHz which shows the Progress in directivity and upper frequency range coverage. The Proposed Vivaldi antenna displays steady radiation pattern throughout the frequency band. The VSWR characteristic and Far-field radiation pattern are plotted to realize the antenna Mechanism.

Design and simulation double Ku-band Vivaldi antenna

Indonesian Journal of Electrical Engineering and Computer Science

Due to the tremendous development in the field of wireless communication and its use in several fields, whether military or commercial was proposed. A novel tapered slot Vivaldi antenna is designed and simulated at double band frequency (Ku-band) using computer simulation technology (CST) software 2020. The dimensions of the antenna are 2.3 × 1 × 0.4 mm3 with a microstrip feed of 0.5 mm. The proposed antenna is improved by cutting a number of circle shapes on the patch layer in different positions. The simulation results are divided into more sections according to the number of circle shapes cutting. The results are good acceptance and make the improved Vivaldi antenna valuable in many future wireless communication applications.

Multiband Vivaldi Antenna for X and Ku band Applications

A Multiband vivaldi antenna is designed to operate in the X and Ku bands and simulational results are presented in this paper. Along with the ultrawide band, this particular vivaldi antenna is working in the range between 7 to 20 GHz at different resonent frequencies. Gain of more than 9dB and bandwidth enhancement of 0.92% can be achieved using this model. All the antenna parameters including design considerations and field distributions are presented in this paper.

Design and Performance Enhancement of Vivaldi Antenna

Research & Development in Material Science

In this paper, a computer aided design of Vivaldi Antenna is developed which is used to study the effect of different parameters such as rate of opening of exponential slot and size of the radius of circular slot of the Vivaldi Antenna. The proposed design resulted in enhancement of gain and reduction in reflection losses. COMSOL Multi physics simulator is used to design the proposed Vivaldi antenna.

An Array of M-Shaped Vivaldi Antennas for Uwb Applications

Progress In Electromagnetics Research Letters, 2017

In this paper, a novel M-shaped UWB Vivaldi array antenna is presented. First of all, a simple M-shaped UWB Vivaldi antenna is designed, and its properties of return loss, radiation pattern, VSWR, gain, etc. are analyzed. An array of M-shaped UWB antenna is simulated and designed after the successful implementation of the simple UWB Vivaldi antenna. The designed antenna has operating frequency from 3.25 GHz to 8.85 GHz covering 5.6 GHz bandwidth. The antenna has flat gain over entire frequency range. The proposed antenna is fabricated on a commercially available FR-4 substrate having relative permittivity of 4.4 and height of 1 mm. The proposed antenna has wide band and good flat gain over entire frequency range. The proposed antenna can be used in next generation wireless communication because of its efficiency, gain and wide bandwidth.

A Vivaldi Antenna with Improved Bandwidth and Gain

International journal of electrical and computer engineering systems, 2022

In this paper, the radiation characteristics of the conventional Vivaldi antenna are improved by proposing a novel design of a Vivaldi antenna. This proposed Vivaldi antenna is excited through three slots by using the L-probe microstrip feeder. The novel design can provide higher gain and wider bandwidth compared to that of the conventional Vivaldi antenna of the same size. The CST MWS software is used to simulate the proposed Vivaldi antenna. The measured and the simulated S-parameters were compared so that the feasibility of the proposed Vivaldi antenna was validated. The measured S-parameters show that the impedance bandwidth of the proposed Vivaldi antenna was from 1.976 to 7.728 GHz, while the measured maximum gain is 4.9 dBi at the operating frequency of 3 GHz.

Compact Vivaldi Antenna With Balun Feed For Uwb

2017

A minimized Vivaldi antenna balun feed operating at UWB frequency from 3 to 10 Ghz is designed. The antenna is developed from the linear tapered slot antenna (LTSA) with a constant curve slope rate. For the feeding configurations coplanar waveguide (CPW) to slot line transition and micro strip line to slot line transitions are used. The antenna balun performance characteristics are measured in terms of VSWR and return loss. To make the structure lossless Rogers RT/Duroid5880 substrate with permittivity 4.4 is used. The antenna modeling is analyzed using HFSS. The VSWR of the antenna is obtained with a value less than 2 for the entire operating frequency range. The obtained return loss also indicates the antenna is having good matching at the output port.

Modelling and Analysis of Vivaldi Antenna Structure Design for Broadband Communication Systems

2020

In this paper, a method of designing a Vivaldi type phased array antenna (PAA) which operates at S-band (6–90 GHz) is presented and good active S-parameter characteristics. An antipodal Vivaldi antenna with a compact parasitic patch to overcome radiation performance degradations in the high-frequency band is proposed. For this purpose, a double asymmetric trapezoidal parasitic patch is designed and added to the aperture of an antipodal Vivaldi antenna. The proposed antenna has a peak gain greater than 7 dBi over the frequency range of 6–90 GHz.