Design of 2X4 Microstrip Monopulse Patch Antenna in C-Band

Progress In Electromagnetics Research B, 2009

A diversity monopulse antenna is presented in this paper. This monopulse antenna is based on a dual frequency dual mode ratrace coupler that has been designed by using Composite Right/Left Handed (CRLH) Transmission Lines (TL). The device has two input ports while the (Σ) and (Δ) outputs are interchangable at either of the two operating frequencies. In this way the monopulse antenna can work at two different frequencies with two sets of radiation patterns, Σ and Δ. In addition, there is no need of diplexing to separate the (Σ) and (Δ) radiation patterns since these patterns at either frequency are directly obtained at different ports. The dual frequency dual mode rat-race requires that the phase delay of the CRLH lines must be different at either working frequency. As an example of an application, a 950 MHz/1.8 GHz dual-band dual-mode rat-race coupler is shown.

Microwave and Optical Technology Letters, 2008

A planar antenna is presented as part of a Signal Identification System working at 1.06 GHz. The antenna presents a monopulse radiation pattern. Likewise, a scanning of the main beam direction is achieved in a ±45° azimuth coverage. A limited 3 dB amplitude drop of the received signal at the edges of the angular scanning area is only permitted. Furthermore, a broad beamwidth is required in the single element of the array. A rectangular linearly polarized double stacked patch has been then designed, with a significant size reduction in the nonresonant length, to increase the azimuth beamwidth of the array single element. The whole antenna structure is composed of 18 elements, which have been distributed in six columns of three patches per column. The feeding network of the array has been developed in microstrip technology, with small individual circuits connected by coaxial cables, to reduce the global losses of the system. The designed compact antenna and the transmitting and receiv...

This paper presents a microstrip patch antenna designed using computer simulation technology (CST) Microwave Studio at a resonant frequency of 2.4 GHz. The antenna consists of three layers, the upper layer called metallic patch, the bottom layer called ground and the dielectric layer in between the conduction layers called the substrate. The antenna has the advantage of minimal weight, low profile and can maintain high performance over a wide spectrum of frequencies. As such the study focused on the novel design of a rectangular microstrip patch antenna. The performance characteristics of the antenna patch arrays elements 1X2, 1X4 and 2X2 were compared. The aim of designing an antenna with improved gain, reduced losses and use for X band applications such as radar, satellite, communication, medical applications and other wireless systems was achieved. The performance of the designed antenna in terms of radiation efficiency, gain, reflection coefficients and radiation patterns were v...

International Journal for Research in Applied Science & Engineering Technology (IJRASET), 2023

The paper gives a detailed study of how to design a microstrip patch antenna array for UWB applications by using the FR-4 substrate material. The rectangular antenna array is designed with the planar ground. The designed antenna is a rectangular shape, compact and planar for the UWB applications. The size of the antenna is 20.50×15.22 mm (width and length), which resonated at a return loss-14 dB,-31.23 dB and-33.36 dB and the input impedance is 50 ohms. We used the box dimensions are 40 mm × 40 mm for single, 80 mm × 70 mm for 1×2 array and 100 mm × 40 mm for 1×4 array antenna. For the simulation work SONNET software is used, SONNET software is a planar 3D electromagnetic simulator and all the simulated results are shown by the graph.

—Due to the existence of growth in development of low cost, less weight, highly reliable, minimal profile antennas for wireless devices, it poses a new challenge for the design of antenna in wireless communications. This paper presents design and simulation of a rectangular micro strip patch array antenna at 2.4 GHz for wireless communications that provides a radiation pattern along a wide angle of beam and achieves a gain of 11.6 dBi.The rectangular micro strip patch antenna was analysed using Ansof/Ansys HFSS and also made a comparision among the different substrates which shows different results based on same parameters.

Journal of emerging technologies and innovative research, 2018

In many applications it is necessary to design antennas with very high gain to meet the demands of long distance communication. The gain or directivity of single antenna is less. To increase the gain and directivity the solution is antenna array. This can be done by increasing the size of antenna. Enlarging the dimensions of single antenna often leads to more directive characteristics. Another method is increasing the dimensions of antenna without increasing the size of individual element is antenna array. It is one of the common methods for combining the radiation from a group of similar antennas in which the phenomenon of wave interference is involved. In this paper analysis of single feed and dual feed microstrip patch antenna arrays is done, and results are compared. Keywords— Microstrip patch, Array antenna, X-band, Rogers RT5880 Dielectric Substrate, wireless Communication.

—This paper presents the design of a rectangular microstrip line-fed patch antenna array with a centre frequency of 3.8 GHz for WiMAX and Unmanned Air Vehicle (UAV) applications. A single element, 1x2 and 2x2 microstrip rectangular patch antennas were designed and simulated in Computer Simulation Tool (CST) Microwave Studio environment. The results of designed antennas were compared in terms of Return Loss (S11 parameters), bandwidth, directivity, gain and radiation pattern. Compared to traditional microstrip antennas the proposed array structure achieved a gain and directivity of 13.2 dB and 13.5 dBi respectively. The antenna was fabricated using Rogers Duroid RT-5880 substrate with a dielectric constant r of 2.2 and a thickness of 1.574 mm respectively. The array antennas were measured in the laboratory using Vector Network Analyser (VNA) and the results show good agreement with the array antenna simulation.

International journal of engineering research and technology, 2015

This paper presents the modeling, simulations, fabrications and analysis of microstrip patch antenna & its feed lines. Microstrip antennas are of huge importance because of the advantages of their modest profile and less expensive printed circuit construction, and many forms have design and created for various applications. The characteristics parameters like dielectric constant ( ), thickness of the substrate (h) and antenna's dominant-mode resonant frequency ( ) is transformed into the patch dimensions that is length (l) and width (w) of the microstrip patch. The rectangular microstrip patch antenna with modified feed lines are designed & simulated for wireless communication application that works at 2.4 GHz. The microstrip feed line for microstrip patch antenna plays an important role to determine the return loss, gain & its radiation pattern. By modifying the microstrip feed line or inserting some discontinuities in it the return loss of the patch antennas could be reduced considerably, while gain and radiation performance is improved. In this paper a microstrip patch antenna is designed and simulated on FR4 substrate, with different feed lines using software's based on MOM & FEM techniques. The microstrip patch antennas were fabricated on FR4 substrate with different feed lines S 11 (dB) were measured with Network analyzer. The work is of practical importance for microwave researchers and engineers.

IEEE Antennas and Wireless Propagation Letters, 2012

A simple technique for obtaining wide-angular nulling in the sum and difference patterns of the monopulse antenna is presented. This technique involves the addition of two elements, one at each end of the monopulse antenna array, which together produce a cosine pattern used for obtaining wide-angular nulls. By adjusting the amplitude of the excitation of the two-element auxiliary array, it is possible to modify the overall array pattern to place wide angular nulls in the directions of undesired interference signals.

IEEE Antennas and Wireless Propagation Letters, 2016

In this paper, the design of a novel radial planar monopulse antenna with two differences and one sum far-field patterns are presented. The antenna consists of the parallel radial line, slot array on the upper plate and feeding network on the underside of the plate. The slots are included of split-ring slots (SRS) which have been designed for circular polarization to work in the X-band. The feeding network is designed by microstrip line to provide the phase excitation for each beam. At 10.58 GHz the sum pattern gain is 18.1 dB and differences gains are 12 dB and 11.9 dB for elevation and azimuth beams respectively. The axial ratio in the main beam of sum pattern is better than 1.2 dB.