Compact colocated threeelement diversity antennas 119 appendices. Two grounded strips, which are connected to the ground plane by an array of shorting pins, are symmetrically positioned. In figure 6 blue line, it is presented the reflection coefficient of the miniaturized spiral with an impedance step. Miniaturization of microstrip patch antenna using metamaterial. The present invention relates to a miniaturized patch antenna assembly in uhf frequency band. The equivalent circuit model of a patch antenna loaded with complementary resonator has been discussed in. This antenna, which consists of a metallic patch printed on a dielectric substrate over a ground plane, offers several advantages including ease of design and fabrication. If the antenna had a 100% radiation efficiency, all directivity would be converted to gain. Miniaturized microstrip patch antenna with defected ground. A novel kind of miniaturized wideband patch antenna is designed and comparative analysis is presented. Miniaturized cp antenna using reactive impedance surface ris118 6. Miniaturization of microstrip patch antenna using csrr. The aim of this work is to miniaturize a microstrip patch antenna resonating at 3 ghz.
Equivalent circuit model of conventional patch antenna and patch antenna loaded with complementary resonator are presented in fig. Miniaturization of microstrip patch antennas for gps. The optimally miniaturized patch antenna is obtained by using the genetic algorithm. Pdf miniaturized patch antenna with grounded strips. Pdf the aim of this work is to miniaturize a microstrip patch antenna. Miniaturized slotted patch antenna for xband apllications s. The simulation results show that this method is suitable to design small patch antenna. D side view of miniaturized antenna consisting of csrr metamaterial layer between the square patch and ground plane. In section 3, a miniaturized feeding network based on crlhtls and tjunctions is designed to match the ultracompact patch array. Due to the slow wave phenomenon created in the fucebg structure and the. Performance of the patch antenna can be enhanced when the patch edge width cut is more than its length 6.
Single or dual bands frequency response can be obtained by varying the feed location, height of the substrate and the geometric specifications of the antenna. The overall dimension of the proposed antenna reduced about 50 percent. The proposed antenna is fabricated and its measured results are compared to the results of the rectangular patch antenna to validate the design procedure. This website is intended to be a source of knowledge for learning about and understanding antennas. One application of metamaterials is the realization of dual or multifrequency microstrip patch antennas see, for example, d. Dualfrequency microstrip antennas for transmission and reception represent promising approach for doubling the system capacity. The proposed patch antenna is designed with a resonating frequency of 2. The rectangular patch antenna is analyzed, and what is learned here will be applied to understanding pifas planar invertedf antennas. Miniaturized ultra wideband microstrip antenna based on a. Ill use the terms microstrip antenna and patch antenna interchangeably. This paper presents a compact microstrip patch antenna for ultra wideband uwb applications using a koch snowflake fractal radiating antenna. Abstract this paper presents line fed miniaturized square fractal antenna containing small kiteshape fractals. Reflection phase at 11 ghz versus border length of the antenna patch in different materials 9. The invention is notably useful in rfid applications.
A compact circular axeshaped patch antenna is presented for miniaturized application. The effect of miniaturization on antennaparameters like resonance frequency, return loss, radiation efficiency, and bandwidth arediscussed. A modified insetfeed microstrip patch antenna is proposed in this paper to miniaturize the antenna size. Proposed metamaterial antenna reduces the size of the mic rostrip patch antenna substantially and increases the directivity. Miniaturized microstrip reflectarray antenna design for kuband applications. Pdf miniaturized microstrip patch antenna with defected ground. An analytical theory for the eigenfrequencies and eigenmodes of shortingpost microstrip antennas mpas is presented. Rectangular patch antennas are notoriously narrowband. The proposed textile antenna is created using circular patch and staircase slots. In figure 3, the radiation efficiency and the total efficiency of the miniaturized archimedes antenna are plotted. Dualband miniaturized patch antennas for microwave breast.
Dec 15, 2018 a novel metamaterial structure has been proposed for its operation at 2. A significant amount of 89% miniaturization has been made possible by careful and meticulous investigation of slots insertion in patch and ground of msa antenna. Design of compact colocated polarizationpattern diversity antennas. The approach can be applied to reduce the crosspolarization level of any conventional patch in working condition, but without any perturbation in the patch and the ground plane. In particular, it is shown that the zero mode of the unloaded mpa plays a central role for reducing the lowest operation frequency of the loaded mpa. Fang, dualband rectangular patch antenna with a pair of lshaped slots for wlan application, ieee international symposium on microwave, antenna, propagation and emc technologies for wireless communications, 2005, china, 812 august 2005. The miniaturization is achieved by employing concentric complementary split ring resonator csrr structures in between the patch and ground plane. The location of the operating frequency is tuned effectively by the resonance of the metamaterial. Design of an efficient miniaturized uhf planar antenna kamal sarabandi, fellow, ieee, and reza azadegan, student member, ieee abstract in this paper, the design aspects and the measured results of a novel miniaturized planar antenna are described. Miniaturized hightemperature superconductor microstrip patch antenna. This paper presents a design methodology for the implementation of a miniaturized square patch antenna and its circuit model for 5. A miniaturized design of microstrip patch antenna has been proposed for significant improvement in crosspolarization purity.
Antenna theory and design, 1st edition, 1981, prentice hall, inc. Research article a miniaturized patch antenna by using a. In addition to miniaturization and dual band nature, the proposed antenna also removes unwanted harmonics without the use of additional filter component. Ieee transactions on microwave theory and techniques volume.
The microstrip patch antenna mpa has been in use and has been studied extensively during the past three decades. In this section, well discuss the microstrip antenna, which is also commonly referred to as the patch antenna. Nov 09, 2012 read modified hilbert fractal geometry, multi. The textile antenna without electromagnetic band gap ebg structure operates at 8. A novel kind of miniaturized wideband patch antenna is designed and. Advanced antenna miniaturization techniques for lowpower. The proposed metamaterial structu re along with microstrip patch antenna exhibits 32. A wide band miniaturized square patch antenna with kite. The textile antenna is miniaturized using ebg structure with four vias. Design of miniaturized multiband microstrip patch antenna. Miniaturized slotted patch antenna for xband apllications. Expanded coverage of design procedures and equations makes meeting abet design requirements easy and prepares readers for authentic situations in industry.
A new fractalbased miniaturized dual band patch antenna. The basics of patch antennas, updated orban microwave. Compact miniaturized antenna for 210 mhz rfid abstract this paper describes the design and simulation of a miniaturized squarering antenna. Theory of miniaturized shortingpost microstrip antennas. The miniaturized antenna is designed and measured to verify the feasibility of the design method. In section 4, a rectangular patch antenna based on the psec with a dimension of only 0. This antenna is modeled on fr4 substrate with a size of 20 x 18 mm2, thickness of 1. When it is moved to the slot center or open end of the inf antenna, the impedance. Laskar georgia institute of technology atlanta, ga 30332250 email. Pdf miniaturized microstrip patch antenna with defected. Design of an efficient miniaturized uhf planar antenna. A novel metamaterial structure has been proposed for its operation at 2.
The antenna patch is a square patch whose length of a side is 25 mm, which ensures the appropriate gain of the antenna while reducing the volume of the antenna. Miniaturized microstrip reflectarray antenna design for ku. The loading of metamaterial shows a radial size reduction of 56. The design and simulation of mic rostrip patch antenna with and without. Mar 18, 2010 a design of dualband, miniaturized patch antennas for microwave breast imaging was presented and experimentally verified. Typical half wave patches have efficiencies well above 90%. Section 2 describes the working principle and basic design of the proposed decoupling structure. New coverage of microstrip antennas exposes readers to information vital to a wide variety of practical applications. Miniaturized microstrip patch antenna with defected. Secondly, the microstrip antenna was designed to operate at 100 mhz, but it is resonant at approximately 96 mhz. The slot antenna can be considered as a loaded version of the inf antenna.
The proposed dgs is incorporated in the ground plane under the patch antenna to improve its performances. For the lower band, a good impedance bandwidth of 6. The impact of the cm propagation constant on the antenna is discussed in detail. A design of dualband, miniaturized patch antennas for microwave breast imaging was presented and experimentally verified. A miniaturized ultrawideband archimedean spiral antenna. A miniaturized patch antenna by using a csrr loading plane. A miniaturized patch antenna loaded with grounded strips is proposed. A miniaturized micro strip patch antenna loaded with a dng metamaterial was investigated. Theory of miniaturized shortingpost microstrip antennas ieee xplore. Such architectural antenna design is of great importance in. Oct 22, 2015 the present invention relates to a miniaturized patch antenna assembly in uhf frequency band. A circular disc patch antenna resonating at dual band frequency with 2. The directivity of a patch can be estimated quite easily. Design of miniaturized dualband microstrip antenna for.
It shows a good efficiency behavior, with values over the 86% at the. Theoretical and simulated results show that the psec and ppsec can be applied to design a highly miniaturized rectangular patch antenna with efficient broadside radiation. Pdf a rectangular miniaturized patch antenna loaded by new metamaterial unit cells, which operate as munegative medium. Miniaturization of microstrip patch antennas for gps applications. With the superslow tm0 surface mode excited in the bilayer by a simple coaxial line feeding, the antenna has a dimension of only 0. The results are compared with the traditional square patch antenna in terms of area, bandwidth, and. Miniaturized microstrip antenna array using defected ground. However, this miniaturization is at the cost of gain of the antenna.
For this purpose, defected ground structure dgs has been employed to shift the resonance frequency of an initial microstrip antenna from 5. The patch antenna produces broadside radiation, and fairly good radiation e. Miniaturized hightemperature superconductor microstrip patch. Compact miniaturized antenna for 210 mhz rfid abstract. The international journal for computation and mathematics in electrical and electronic engineering on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Ultracompact microstrip antenna array and miniaturized. The proposed design is further modified for dual band 2. Rtduroid substrate with relative dielectric constant 2. Fig 9 shows the size of regular rectangular microstrip patch antenna array without dgs. Pdf a practical miniaturized uslot patch antenna with. Wideband miniaturized patch antenna design and comparative. When the feed point is moved to the shortcircuited end of the slot or inf antenna, the impedance decreases. Smart miniaturized widebandmultiband and reconfigurable.
The miniaturized antenna, with overall dimensions of approximately one tenth of a wavelength 0. Jul 24, 2015 design of multiband microstrip patch antennas using miniaturized 1d metamaterialbased ebgs abstract. A patch antenna radiates power in certain directions and we say that the antenna has directivity usually expressed in dbi. Nov 26, 2018 in figure 6 blue line, it is presented the reflection coefficient of the miniaturized spiral with an impedance step. Sittironnarit, mohammod ali, analysis and design of a dualband folded microstrip patch antenna for handheld device. Design of multiband microstrip patch antennas using miniaturized 1d metamaterialbased ebgs abstract. Aug 01, 2011 theoretical and simulated results show that the psec and ppsec can be applied to design a highly miniaturized rectangular patch antenna with efficient broadside radiation. A miniaturized circularlypolarized antenna for inbody. A prototype of designed microstrip patch antenna array without dgs and with dgs was fabricated as reference antenna and proposed antenna respectively. The proposed dgs is integrated in the ground plane of the patch antenna array for size reduction. Antenna miniaturization techniques linkedin slideshare.
Miniaturized wideband microstrip antenna for recent. Additional size reduction by simplifying antenna geometry 89 5. Pdf miniaturized rectangular patch antenna loaded with spiral. The patch antenna assembly includes a multilayered dielectric substrate including at least a top layer, a middle layer and a bottom layer, an electrically conductive patch structure on the upper. Integration of miniaturized patch antennas with high. A novel metamaterial structure has been proposed for electromagnetic compatibility emc applications. In this work, a miniaturized dual band antenna operable at 2. Miniaturized textile antenna using electromagnetic band. Flexible and miniaturized design of microstrip patch. The miniaturization is carried out by incorporating fractal structures in the patch of the.
By employing reactive loading in the arrowshaped slotted patch to form slow wave effect and embedding vshaped slots into patch to lengthen the current path, the. These antennas are seen as promising candidates for miniaturized mobile telecommunication handsets. Miniaturization of rectangular microstrip patch antenna. In this paper, a pentagon slot inside fractal circular patch microstrip resonator to design compact antenna over partial ground plane is introduced using 3rd iteration of adopted fractal geometry. A substrate for small patch antennas providing tunable. Integration of miniaturized patch antennas with high dielectricconstant multilayer packages and softandhard surfaces shs r. Theoretical investigation of rectangular patch antenna. Furthermore, the ordinary ground plane of the curved slotted patch antenna is replaced by the fucebg ground plane. First, the bandwidth of the patch antenna is very small. Design of multiband microstrip patch antennas using. A novel miniaturized singlefed circularlypolarized cp microstrip patch antenna operating in the industrial, scientific, medical ism band of 2.