Gain enhancement and rcs reduction for patch antenna by using. Moreover, the average gain of the proposed mssbased antenna was enhanced from 2. The two antenna prototypes were manufactured, measured and compared. Ali 1, jayanti venkataraman 2 1 and 2 electrical engineering department, rochester institute of technology. Extensive researches have been conducted to increase gain of microstrip patch antenna.
A microstrip patch antenna consists of a radiating patch on one side of a substrate and a ground plane on the other side of the substrate. This is the first report on novel mushroom type electromagnetic band gap ebg. How can i improve the gain of a patch antenna and what is. In the literature, csssrr has been widely used 6,7. Gain enhancement for circularly polarized microstrip patch. Developing antennas with enhanced gain has always been an important pursuit within the antenna community, as a higher gain leads to an increase in the received power for any given wireless link. Two different types of the rms, namely the double splitring resonator dsr and double closedring resonator dcr are separately investigated. For a threelayer electromagnetically em coupled structure, an air layer is often used between a substrate and a superstrate 11,12. The substrate of the antenna is chosen to be fr4 epoxy substrate which has a thickness of 1.
Gain enhancement of a microstrip patch antenna using a reflecting. Admired gain and bandwidth enhancement methods apart from the different feeding techniques, there are various. Gain enhancement of patch antenna using double negative. The patch is designed as a circularly polarized antenna. The simultaneous improvement of radiating and scattering performance of an antenna is normally considered as a contradiction.
Gain enhancement of patch antenna integrated with metamaterial inspired superstrate. Microstrip antenna gain enhancement with metamaterial radome. In this paper, circular microstrip patch antenna and rectangular slot patch antenna comparison of present and an effort is made to optimize the gain to show better performance analysis on the basis of design and simulation results by implementing fss structured superstrate layer at operating frequency of 5. Therefore, we are concerned about enhancement of a circularly polarized antenna gain.
Pdf a low profile, unidirectional, dual layer, and narrow bandwidth microstrip patch antenna is designed to resonate at 2. Gain enhancement of microstrip patch antenna using. High gain patch antenna using a frequency selective surface fss. N2 a substrate design that uses a ferrite ring to enhance the gain of a microstrip patch antenna. To increase the operational bandwidth of the microstrip patch antenna, different bandwidth enhancement techniques can be applied. A circularly polarized antenna array with gain enhancement. Gain enhancement of patch antenna integrated with metamaterial. Microstrip antenna gain enhancement with metamaterial. Printed wideslot antenna design with bandwidth and gain. In a resonance gain method 810, layers of dielectric are stacked above the patch.
In this paper, a new inverted eshape patch antenna is investigated for the gain and bandwidth enhancement. Rectangular microstrip antenna gain enhancement using elliptical ebg structure. Results show that the patch antenna without the enz superstrate generates sphericallike waves, resulting in small gain and low directivity, whereas by coating the patch. The antenna radome system gain is improved by 9 dbi compared to the patch antenna alone.
However, both of these patch substrate are noninverted and achievable gains of both antennas are below 8. Microstrip patch antennas or simply patch antenna are increasingly useful because the antenna is printed directly onto a circuit board. It can be observed that the impedance bandwidth of more than 46% relative to centre frequency is obtained. In this section, well discuss the microstrip antenna, which is also commonly referred to as the patch antenna. The frequency of operation of the patch antenna of figure 1 is determined by the length l. A multilayer microstrip patch antenna subarray design. Ali a thesis submitted in partial fulfillment of the requirements for the degree of master of science in electrical engineering approved by. A low profile, unidirectional, dual layer, and narrow bandwidth microstrip patch antenna is designed to resonate at 2. Novel gain enhancement technique for microstrip patch antennas based on multipronged feed network synthesis a thesis submitted to the faculty of purdue university by brian j.
The distance between the patch and the ground plane the substrate or dielectric height h determines the bandwidth. Gain and bandwidth enhancement of rectangular patch. Vaughn in partial fulfillment of the requirements for the degree of master of science in electrical and computer engineering august 2016 purdue university. Gain enhancement of cross shaped patch antenna for ieee 802. The antenna radome system consists of one, two, three, or four layers of metasurfaces placed in the nearfield region of a microstrip patch antenna. The center frequency will be approximately given by. Gain and bandwidth enhancement techniques in microstrip. We etch coupled squareshaped split ring resonators csssrrs on both sides of a superstrate which is. The purpose of this paper is to presents the theoretical and simulation results of rectangular, circular and triangular microstrip patch antennas geometry, the computed patch geometry dimensions and the achieved gain enhancement by replacing the conventional substrate with air substrate.
Abstract a novel design of a new frequency selective surface nfss is presented, characterized and employed for the gain enhancement of a microstrip antenna operating at 5. The designed antenna gain is greater than 6 dbi across 2640 ghz. Gain enhancement of a microstrip patch antenna using a circularly. Bandwidth and gain enhancement of microstrip patch antennas mpas is proposed using reflective metasurface rms as a superstrate. Optimization of microstrip patch array antenna for gain. The above equation says that the microstrip antenna should have a length equal to one half of a wavelength within the dielectric substrate medium. A polarizationdependent metamaterial surface composed of blocks of slotted electromagnetic. Antenna gain is related to the antenna type, fr4 is lossy material therefore you can not expect large gain from fr4.
Inverted eshape microstrip antenna for bandwidth and gain enhancement b length of the patch l the effective dielectric constant. The performance of the proposed antenna using a fullwave method are presented and compared to conventional microstrip antenna operating at the same frequency. In this study, wideband radar metamaterialbased patch antenna with wideband rcs reduction and gain enhancement using improved loading method. The dimensions of the patch along its length have now. Gain enhancement of the patch antenna using tsrr nri superstrate. The gain of any antenna is directly related to its effective radiating area, a eff. A method to enhance gain of a circularly polarized cp microstrip patch antenna is proposed. The new fss structure is then applied as a superstrate to a conventional microstrip. A single patch antenna on fr4 can produce gain of 35dbi. Gain enhancement of microstrip patch antenna for wifi applications. The antennaradome system gain is improved by 9 dbi compared to the patch antenna.
Rectangular microstrip antenna gain enhancement using elliptical. Recently, an eshaped patch antenna 18 and uslotted patch antenna 19 have been designed for wireless communications. Novel gain enhancement technique for microstrip patch. In this article, the design of defective ground plane patch antenna with 6 layer of triangular split ring resonator tsrr nri superstrate for gain enhancement is presented. The basics of patch antennas, updated orban microwave. Enhancement of gain of rectangular micro strip antenna using. Air is used as dielectric medium between feed patch and ground plane. Gain enhancement in microstrip patch antennas using hybrid. Between the patch and square rings, there is an airlayer. In figure 16, the reflection coefficient, s11, of a triple layer aperturestacked patch antenna designed in ref. Parametric studies were conducted to illustrate the working principle of the proposed antenna. Gain enhancement of a microstrip patch antenna using a reflecting layer a low profile, unidirectional, dual layer, and narrow bandwidth microstrip patch antenna is designed to resonate at 2. This paper presents the design and characterization of a microstrip patch antenna with multiple superstrates for performance enhancement operating at the central frequency of 5. The aim of the project is to design a rectangular microstrip patch antenna with enhanced gain and bandwidth and study the effect of antenna dimensions length l.
The three patch geometries were investigated theoretically and reasonable values of resonant frequency. The rectangular patch antenna is analyzed, and what is learned here will be applied to understanding pifas planar invertedf antennas. Gain enhancement of microstrip patch antenna using dielectric dng superstrate by abdulbaset m. Gunavathi abstractin this paper, a dual band high gain miniaturized cross shaped patch antenna is proposed for ieee 802. Bandwidth and gain enhancement of microstrip patch. The model uses periodic metamaterial structure around the patch in order to suppress the surface wave and thereby enhancing gain of the antenna. Metamaterial enhances microstrip antenna gain microwaves. Gain enhancement of cross shaped patch antenna for ieee. Apr 17, 2017 using hfss, microstrip patch antenna has been designed with parasitic patch for bandwidth enhancement transformer concept. Their low profile design, often square or rectangular, allows them to be mounted to flat surfaces.
A thicker substrate increases the gain to some extent, but may lead to undesired effects. In order to understand the gain enhancement and the directivity improvement, we plot the nearfield electric field distributions for the patch antenna without and with the enz superstrate in fig. Gain enhancement in microstrip patch antennas using metallic rings arvind kumar1, mithilesh kumar2 1,2electronics engineering department, university college of engineering, rajasthan technical university kota, rajasthan, india abstract. Proximity fed patch antenna and its equivalent circuit 1920 3. Bandwidth enhancement of microstrip patch antenna using. The new fss structure is then applied as a superstrate to a conventional microstrip patch antenna. Gain enhancement and rcs reduction for patch antenna by using polarizationdependent ebg surface abstract.
Bandwidth and gain enhancement of microstrip patch antennas. A multilayer microstrip patch antenna subarray design using cad. High gain patch antenna using a frequency selective. Inverted eshape microstrip antenna for bandwidth and gain. However, this method cannot be applied easily to the edgefed patch, a maneuver that would result in a considerable increase in the. Metamaterialbased patch antenna with wideband rcs reduction. N2 a substrate design that uses a ferrite ring to enhance the gain of a microstrip patch antenna without compromising the bandwidth is proposed. The antennaradome system consists of one, two, three, or four layers of metasurfaces placed in the nearfield region of a microstrip patch antenna. A new metasurface superstrate structure for antenna. By using complementary rhombus resonator crr, a smallsize and lowprofile microstrip patch antenna mpa with broad bandwidth has been proposed. In this paper we are going to enhance gain and bandwidth of microstrip patch antenna. The proposed antenna is suitable for specific applications, such as security and military systems, which require a narrow bandwidth and a small.
Gain enhancement of terahertz patch antennas by coating. The effects of the layer thicknesses, the distance between the multilayers and the patch antenna, and the layer number of the multilayers will also be discussed. Here the overview of air fed high gain patch antenna is presented. The goal of this thesis project was to develop a method for increasing the gain of antennas that. In this work, a high gain patch antenna using multilayer fss radome is proposed for millimeterwave applications. The patch is engraved on fr 4 substrate having a thickness of 1. To the best of authors knowledge, the nested srr hasnt been used before to improve the antenna gain. Additional benefits of patch antennas is that they are easily fabricated making them cost effective. This work is mainly focused on increasing the gain as well as reducing the size of the unidirectional patch. Gain enhancement of the patch antenna using tsrr nri. Ill use the terms microstrip antenna and patch antenna interchangeably. The proposed mss incorporated a slotted patch antenna that effectively increased the measured operating bandwidth from. Gain enhancement of patch antenna using double negative superstrate realized by a high dielectric with triangular lattice of holes abdulbaset m.
In general, when a higher gain is needed for an application, only certain types of antennas can be used. Gain enhancement of a microstrip patch antenna using a. Gain and bandwidth enhancement techniques in microstrip patch. This paper presents a printed wideslot antenna design and prototyping on available lowcost polymer resin composite material fed by a microstrip line with a rotated square slot for bandwidth enhancement and defected ground structure for gain enhancement. In this paper, the performance of a rectangular microstrip patch. A novel antenna design is proposed to enhance the gain and reduce the radar cross section rcs of a patch antenna by using metamaterial surface. Bandwidth and gain enhancement for probefed cp microstrip. The antenna design and the parametric analysis of the band gap structure and their integration are carried out.
Gain enhancement in microstrip patch antennas using. Gain enhancement in microstrip patch antennas by replacing. Pdf a compact patch antenna with stacked parasitic strips spss based on low temperature cofired ceramic ltcc technology is presented. Request pdf microstrip antenna gain enhancement with metamaterial radome in this work, a high gain patch antenna using multilayer fss radome is proposed for millimeterwave applications.
Gain enhancement of a microstrip patch antenna using a cylindri cal electromagnetic crystal substrate. Pdf gain enhancement of a microstrip patch antenna using a. This paper introduces a new circularly periodic ebg structure and an air layer that were used to increase the gain of a circular microstrip antenna. The proposed antenna is suitable for specific applications, such as security and military systems, which require a narrow bandwidth and a small antenna size. Enhancement of gain of rectangular micro strip antenna. Gain enhancement of microstrip patch antenna using dielectric. In order to validate the performance of the proposed model, the antenna fabricated and are analyzed using agilent network analyzer n9925a and antenna test systems. Hong, bandwidth and gain enhancement for singlefed compact microstrip antenna by loading with parasitical patches, in proceedings of the 2016 ieee international conference on microwave and millimeter wave technology icmmt, pp.
Using hfss, microstrip patch antenna has been designed with parasitic patch for bandwidth enhancementtransformer concept. Gain enhancement and rcs reduction for patch antenna by. This paper aims on designing a compact, cheap, low profile patch antenna for xband i. Pdf bandwidth and gain enhancement of patch antenna with. Gain enhancement of microstrip patch antenna using sierpinski fractalshaped ebg volume 8 special issue neeraj rao, dinesh kumar vishwakarma. This paper presents a novel approach for gain enhancement in microstrip patch antennas using metallic rings.
This work is mainly focused on increasing the gain as well as reducing the size of the unidirectional patch antenna. An additional resonance is introduced by the crr to broaden the bandwidth. Therefore, in order to investigate the gain enhancement in the rectangular, circular and triangular microstrip patch antennas when the conventional dielectric substrate is replaced with air substrate, the change in. The enhancement of the antenna gain and directivity will be numerically demonstrated by comparing the patch antennas with and without the enz metamaterial superstrate. Gain enhancement for microstrip reflectarray using. The aim of the project is to design a rectangular microstrip patch antenna with enhanced gain and bandwidth and study the effect of antenna dimensions length l, width w and substrate parameters relative dielectric constant. Microstrip patch antenna design for bandwidth enha youtube. Centre, jaipur, komal sharma4 department of electronics and. T1 gain enhancement in microstrip patch antennas using hybrid substrates.