Effect of slots in ground plane and patch on microstrip antenna performance

It has been concluded that when dielectric constant reduces from 4. Compact rectangular microstrip antenna with group of slots on. The other method to miniaturize the microstrip antenna is to modify its geometry using irises 5 or folded structures 6, based on the perturbation effect 7. The effect is shown on bandwidth, gain, radiation pattern, return loss, axial ratio and size of an antenna. An introduction of aperture coupled microstrip slot antenna. Metasurface reflector msr loading for high performance. Defected ground structure dgs is typically a microstrip line with etched slots on the ground plane. It is a popular printed resonant antenna for narrowband microwave wireless links that require semihemispherical coverage. The effect of the partial ground plane removal in different configurations on the radiation characteristics of a msa are investigated numerically.

Broadband microstrip patch antenna using dual u slot with low profile has been proposed and analysis of results has been done by using ie3d simulator. We inserted slots in parallel and horizontally to the feeding line. Effects of slot loading on microstrip patch antennas. Slots are introduced in the patch and ground plane. A microstrip antenna can provide all these mentioned features. Effect of ground plane for enhancing the bandwidth and. Effect of a finite ground plane on microstripfed cavity. In this paper, we study the effect on performance characteristics of rectangular patch antenna with varying thickness of dielectric cover. For example, some patch antennas are approximately half a wavelength on each side.

A microstrip patch or array with infinite ground plane is a theoretical antenna, but patch with finite ground plane is of practical interest. Sequel reaction of slots in patch and ground plane on microstrip antenna performance. A polarization reconfigurable patch antenna with loop. The effect of defective ground structure on the rectangular microstrip patch antenna is observed by varying the length of the rectangular slot and the performance of the antenna in terms of return loss and bandwidth are analyzed. Slotted ground plane of rectangular patch microstrip antenna. In this paper, we show the influence of the dimensions and the shape of the support. Broadband microstrip patch antenna using dual uslot with low profile has been proposed and analysis of results has been done by using ie3d simulator. Peixeiro 16 reported the effects of ground plane size on a microstrip antenna performance for small handsets. Abstractthis paper presents the effect of the slots in ground plane and patch on resonant frequency, impedance bandwidth, gain and side lobe. Abstract analysis of resonant behavior of microstrip patch antenna with defective ground structure has been presented in this paper.

Slots in the ground plane of rectangular patch we designed microstrip patch antenna with multiple number of slots. Pdf effects of slot loading on microstrip patch antennas. This antenna is optimized by adjusting the feed position and size of the triangular slot in the ground to have the optimum impedance matching and optimum bandwidth. Coaxial feed ground plane substrate u slot patch stacked parasitic patch ushaped slot seldom exceeds 20% bw. Effect of slot size variations on microstrip patch antenna. Double lslot microstrip patch antenna array for wimax and. Investigations have been carried to cut steps in the four corners of the rectangular patch and to add slots in the ground plane. The aperture coupled patch antenna microstrip feedline, substrates, ground plane slot, and patch dimensions are varied to determine effects on antenna performance which eliminates the electrical connection between the radiating conductors and feed by employing dielectric substrates separated by a ground plane. The effect of backslit groundplane to microstrip patch antenna for 4g mobile phones application. The uwb antenna consists of simple rectangular patch antenna with 50. Patch antennas come in various shapes and sizes and consist of a patch of metal directly above a ground plane. The coplanar waveguide cpw fed microstrip patch antenna considered in our work comprises of two rectangular patch elements each embedded on two lshaped slots. The methods developed for efficient wideband patch antenna design are based on one or more of the following principles.

Pdf effect of slots in ground plane and patch on microstrip. What the effect of size the patch and ground plan on. Each slot line is 2 mm shorter than the previous one. The uniform geometrical theory of diffraction is employed for calculating the diffracted fields from the edges of a slot antenna s finite ground plane. To accomplish this, an elemental study is conducted on the impact of ground plane slots. It has been observed as the slot length increases the resonant frequency shifted to the lower side by. In this paper, the effect of the ground plane deformation on electrical performance of air microstrip antennas is approximately processed.

Tech scholar 2assistant professor 1,2department of electronics and communication engineering 1,2madan mohan malaviya university of technology, gorakhpur273010, uttar pradesh, india. A pin diode is placed on every slot to alter the current direction, which determines the. The antenna has been designed for the centre frequency of 3. Results show that the tshaped ground plane with the presence of the diagonal cuts at the top corners and the rectangular slots. Novel design of microstrip antenna with improved bandwidth. However, the radiation characteristics of the antenna degrades when we rise frequency up to the millimeter wave band 5.

In this paper, we present a double l slot microstrip patch antenna array for worldwide interoperability for microwave access wimax and wireless local area network wlan applications. The efficiency of the antenna also improve with low dielectric constant. This study presents the theoretical and experimental investigation on the effect of rectangular slot on resonance frequency, return loss and band widths of a novel, single layer, single probefed rectangular microstrip patch antenna. A meander stripline feed multiband microstrip antenna loaded with metasurface reflector msr structure has been designed, analyzed and constructed that offers the wireless communication services for uhfmicrowave rfid and wlanwimax applications. 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 i enhanced the bandwidth of mpa by inserting multiple slots in its ground plane.

The patch is of length l, width w, and sitting on top of a substrate some dielectric circuit board of thickness h with permittivity. Recent researches in circuits, communications and signal processing isbn. Effect of slots in ground plane and patch on microstrip. The objective of this thesis is to analyze the impact of ground plane size and geometry on the performance of microstrip patch antennas applied in wifi technology, aiming to cover the 2,45 ghz and 5,8 ghz frequency bands. I designed the same slot shape in different sizes of patch and ground plane and got on different results i want to know what the effect of size the patch and ground on the performance of antenna clearly. Design and study of compact and wideband microstrip uslot. In this letter, we analyze the effects of metallic plate size on the performance of microstrip patch type tag antennas. In this paper the reconfigurable patch and ground plane used as a technique for enhancing band width of microstrip antenna, traditional rectangular patch microstrip antenna is used as a comparison. The slots on the patch or on the ground plane will help to design a antenna with improved bandwidth and effeciency. The main disadvantage of these antennas is their relatively large size compared to other types of antennas. The distance between the patch and the ground plane the. Defect in ground plane helps in increasing capacitance and inductance. On the use of slots in the design of patch antennas. The thickness of the ground plane or of the microstrip is not critically important.

The rectangular microstrip antenna with rectangular defective ground structuredgs is simulated using hfss software. Letters international journal of recent trends in engineering, vol 2, no. In this case a coaxial cable fed microstrip line is used which leads to good impedance matching and its operating frequency is 2. A scheme is devised to reduce the mismatch problem associated with thick substrates. Effect of height of the substrate and width of the patch. The effects of the finite ground plane shape are analyzed by the commercially available ie3d software. Anvesh kumar abstract in recent years, microstrip antennas are playing an important role in wireless communication systems because of their many advantages like light weight, low profile, low cost, easy integration with planar structure and easy fabrication. Design of a meandered line microstrip antenna with a. In this paper a small size microstrip antenna with slot and defective ground structure have been designed to examine the relationship between the resonant.

Effects of metallic plate size on the performance of. Effect of slots in ground plane and patch on microstrip antenna. Microstrip patch antennas are used in many applications and fields due to its various advantages such as low weight and profile 3, mechanical robustness and fluency of manufacture 4. Performance of the microstrip patch antenna for different ground plane slot dimensions and fixed slot radius of patch vi. Design and performance issues of microstrip antennas vinay bankey, n. Rectangular slotted ground structure to reduce mutual. The effect of simulated return loss, swept gain and radiation pattern of the proposed antenna have been obtained due to variation of slit dimensions. Our reference antenna is monopole feature microstrip feed style with a square radiator and a partial ground plane. Patch and ground plane design of microstrip antennas by.

This paper presents a microstrip antenna loaded with u slot. An aperturecoupled design is proposed for microstrip slot antenna to improve its radiation pattern as well as bandwidth. Introduction in recent years there is a need for more compact antennas due to rapid decrease in size of personal communication devices. For good antenna performance, a thick dielectric substrate having a low dielectric constant ground plane to partial ground plane, the bandwidth has been doubled in value and there is also an increase in the return loss value. Microstrip patch antennae radiate primarily because of the fringing fields between the patch edge and the ground plane. Four different slots configurations triangular, trapezoidal. All the patch elements are laminated on the top of the substrate, and the ground plane is on the opposite side of the patch where four rectangular slots are placed as dgs elements. Analysis of microstrip antenna performance by varying length of. The effects of rectangular, square and circular ground plane shapes are reported for a probefed rectangular microstrip patch, where the probe location has been preselected for the best vswr based on cavitymodel formulation. Dgs is popular because of the simple structural design, filtering performance, and controlling radiation properties of microstrip patch antennas by suppressing crosspolarized radiations 19. Thus by reducing the ground plane to partial ground plane, the bandwidth has been doubled in value and there is also an increase in the return loss value.

It has been observed as the slot length increases the resonant frequency shifted to the lower side by 19. This study presents a new, simple method for reducing the backlobe radiation of a microstrip antenna msa by a par tially removed ground plane of the antenna. One effective way to increase the impedance bandwidth is to change the patch shape, feed shape and the slot shape. I show the resonant performance characteristics of the planar patch antenna, antenna with slot and with dgs structure. Inset fed patch antenna inset fed rectangular microstrip patch antenna is designed using transmission line model 5 at 900mhz, dielectric constant is 2. Performance analysis of a defected groundstructured antenna. Citeseerx document details isaac councill, lee giles, pradeep teregowda. Effect of ground plane shape on microstrip antenna. But however this arrangement increases the antenna area which will decrease the antenna compactness and efficiency. The effect of backslit groundplane to microstrip patch. It has been observed that by taking out h shape slot from the patch and from the ground plane, there is considerable improvement in the return loss, vswr and input impedance.

The proposed msr assimilated antenna comprises planar straight forward design of circular shaped radiator with horizontal slots on it and 2d. The overall performance of the antenna is influenced by. Metallic objects are challenging for passive ultra high frequency uhf spectrum radio frequency identification rfid systems due to the effects of conductive materials on tag antenna performance. Our reference antenna is monopole feature microstrip feed style with. Design of a meandered line microstrip antenna with a slotted. The conducting patch that acts as radiator, substrate that acts as base material, conducting ground plane and strip line that provide interface between source and antenna. As we know the current distribution on the ground plane of the conventional patch antenna mainly concentrates just under the patch, as shown in figure 3, which is the vector current distribution of the resonant frequency 5.

The effect of the ground slots up on the bandwidth. They also examined effects of small ground plane on bandwidth and gain of pifa. Bandwidth improvement of microstrip patch antenna using. The results of proposed antenna shows that by using proper slot size on patch s surface the performance of antenna can be improve. By embedding meandering slots in the antennas ground plane, it is observed that the resonant frequency of the microstrip antenna is significantly lowered, which can lead to a large antenna size. The proposed lowcost, compactsize circular patch antenna on 3 cm 5. Effect of partial ground plane removal on the radiation. Effect and design of microstrip patch antenna with defected ground structure written by sukhamrit pal singh sodhi published on 20200222 download full article with reference data and citations. Microstrip patch antenna has a ground plane on the one 1. This antenna is often built of printed circuit board material and the substrate makes up the. The microstrip antennas have been designed on er 4.

This paper examines the effect of a finite ground plane on microstrip fed cavitybacked slot antennas. The results of proposed antenna shows that by using proper slot size on patchs surface the performance of antenna can be improve. Bandwidth enhancement of uwb microstrip antenna with a. The fundamentals of patch antenna design and performance by gary breed editorial director m icrostrip patch antennas also just called patch antennas are among the most common antenna types in use today, particularly in the popular frequency range of 1 to 6 ghz. Microstrip patch antenna mpa is widely implemented in different communication systems. Design of slotted ground hexagonal microstrip patch. The fundamentals of patch antenna design and performance. Sequel reaction of slots in patch and ground plane on. A microstrip patch antenna is comprised of a radiating metallic patch situated on one side of a nonconducting substrate panel with a metallic ground plane placed on the other side of the panel. The first aperture coupled microstrip antenna was introduced in 1985 by d m pozar 4 figure1. Properties of a basic microstrip patch a microstrip or patch antenna is a lowprofile antenna that has a number of advantages.

This paper presents effect of slots on microstrip patch antenna and its parameters. The dimensions of this antenna are 59 mm and 79 mm. This type of antenna had its first intense development in the. Printed wideslot antenna design with bandwidth and gain. We added up to 15 slots in the ground plane with 3 mm spacing. This paper presents the effect of the slots in ground plane and patch on resonant frequency, impedance bandwidth, gain and side lobe. The cp waves are excited by two perturbation elements of loop slots in the ground plane. Actual environments are different, and the ground plane is necessarily limited. The proposed antenna is designed on a rogers rtduriod 6202 with relative permittivity 2. In this article a broadband microstrip patch antenna is designed with slit incorporated in the rectangular ground plane.

To study the effect of substrate material for microstrip. Pdf the effect of the ground slots up on the bandwidth. Increasing microstrip patch antenna bandwidth by inserting. Here the previously designed 8 element array with corporate feed, as shown in figure 6.

Effect and design of microstrip patch antenna with. In this paper a microstrip patch antenna is designed with rectangular ground structure with slit loaded on the ground plane to both enhance the performance and reduce the dimension. It is found that for the ultralow profile microstrip antenna the slots in the ground plane gives the most wide bandwidth three times the conventional one, while the slits in the patch gives the most reduction in size more than 60% compared to the conventional one. Hexagonal patch with slot in the ground a single triangular slot is cut in the ground plane. The effect of ground plane deformation on resonant frequency of air microstrip antennas can be effectively calculated by the mathematical model. This paper presents the ground plane slots effectiveness up on the bandwidth performance for the ultrawideband uwb antenna. Impact of slots on the performance analysis of microstrip. In this paper the typical configurations of slots are studied by putting group of narrow vertical slots on ground plane parallel to the patch radiating edge. Design and performance issues of microstrip antennas. Enhanced bandwidth of uwb microstrip antenna using uslot. The slots on the patch or on the ground plane will help to.

A microstrip line fed slotted antenna with a central parasitic radiator to achieve wideband performance is presented in 32. Multiband stacked microstrip patch antenna with wide ground. An ishaped microstrip line is used to excite the square slot. For good antenna performance, a thick dielectric substrate having a low dielectric constant and better radiation.

A microstrip patch antenna mpa consists of a conducting patch of any planar or nonplanar geometry on one side of a dielectric substrate with a ground plane on other side. A compact rectangular microstrip antenna is realized by embedding slots on the ground plane with increased impedance bandwidth and gain. One of the main disadvantages of mpa which limits its applications is its narrow bandwidth. With the help of slots, the size of microstrip patch antenna has been reduced. Furthermore, the effect of slot on ground plane is analyzed which improves the antenna bandwidth and performance as discussed in 6, 7, 8. Ushaped slot is cut on the lower patch as it provides improved. Effect and design of microstrip patch antenna with defected. This antenna is often built of printed circuit board material and the substrate makes up the patch antennas dielectric. Ground plane provides a larger canvass for introducing modifications for enhanced performance. By means of parasitic elements or slots, either new resonances. Keywords microstrip patch antenna, frequency, gain, beamwidth,hfss,wireless communication. Microstrip patch antennas with regular ground plane and. A microstrip antenna having inverted ushaped slots in the ground plane and the radiator operating in three different frequency bands for wlanwimax applications is presented in.

The basics of patch antennas, updated orban microwave. The proposed microstrip antenna consists of a feed structure, a trapezoidal ground plane and a quartercircle shaped radiating patch with grooved slots on it, these structures are printed on a. The effect of defective ground structure on the rectangular microstrip patch. It is based on coupling of an aperture between the patch antenna and microstrip slot line. The patch antenna, microstrip transmission line and ground plane are made of high conductivity metal typically copper. Analysis of microstrip antenna performance by varying.