The antenna is operating in lte band ii having frequencies of 1850 mhz1910 mhz which is. Computed return loss of square dualfrequency microstrip antenna. Single fss frequency selective surface substrate is used to increase efficiency. The basics of patch antennas, updated orban microwave. Deschamps in 1953, but didnt become practical until the 1970s when it was developed further by researchers such as robert e. The size of a microstrip antenna is inversely proportional to its frequency. A variant of the patch antenna commonly used in mobile phones is the shorted patch antenna, or planar invertedf antenna pifa. Elliptical slot circular patch antenna array with dual band. The use of metamaterials in single or multiple layers has been shown to contribute a great deal to the design of a highgain microstrip antenna at 10. Finally, the optimum dimension of dual frequency rectangular patch antenna has. In this paper a simple microstrip patch antenna is designed in cst microwave studio at a resonant frequency of 2. The shape and size of patch determine the frequency of. Performance of micro strip patch antenna for dual band application.
Design simulation and fabrication of microstrip patch antenna 349 the proposed antenna is designed in lte band ii for 4g mimo communication. The proposed prototype antenna behavior is discussed in terms of the. Quadband duallayer microstrip antenna design for mobile handset. Dual frequency, microstrip patch antenna, microstrip line, uwb.
The effect of the air gap distance on the gain of the dual layer microstrip patch antenna at the desired frequency is shown in figure 4. Design and analysis of rectangular microstrip patch. A triangular patch antenna for uhf band with microstrip. They are usually employed at uhf and higher frequencies because the size of the antenna is directly tied to the wavelength at the resonant frequency. The gain and return losses were good in comparison to conventional antennas for these bands. This new antenna configuration gives a largo variation in frequency ratio of the two operating frequencies, without increasing the overall size of the untenna. Due to the rapid acceleration and evolution of the wireless communication and their equipment, integrating more services in the personal devices, personal digital assistance pda devices has to work in multiband frequencies. The proposed antenna has good gain and its impedance bandwidths defined by. Wearable microstrip antennae are suitable for wireless body area network. Bandwidth enhancement of a dual band planar monopole antenna. Comparing with the conventional rectangular patch antenna, the impedance bandwidths for dualfrequency antenna is increased to 7.
New dualfrequency microstrip antennas for wireless communication. Dual feed microstrip patch antenna for wlan applications. Design of dual band dual polarized microstrip patch antennas. Gain and bandwidth enhancement techniques in microstrip.
Multiple patch antennas on the same substrate see image called microstrip antennas, can be used to make high gain array antennas, and phased arrays in which the beam can be electronically steered. The conducting strip is having smaller width as compared to the patch. Dualband slot microstrip patch antennas with dualradiation. Microstrip antenna an overview sciencedirect topics. Microstrip patch antenna better performance than rectangular microstrip patch antenna. Metamaterial enhances microstrip antenna gain microwaves. The most common type of microstrip antenna is the patch antenna. A dual polarized microstrip patch antenna has been proposed for kuband applications with dimensions of 15 mm.
In order to design a circular microstrip antenna for multiband applications suitable dielectric substrate of relative permittivity r4. It is apparent from these patterns that there is excellent isolation between the two radiated modes. A new type of dualfrequency rectangular microstrip array antenna is proposed, which is designed by using a simple corporate feed arrangement. Current ultrawide bandwidth uwb and highgain antennas include mainly logperiodic antenna, traditional transverse electromagnetic tem horn antenna, spiral antenna, bowtie antenna, tapered slot antenna, and microstrip patch antenna. Basically transmission line modelling approach has been used to model the antenna. The new designs including modifying and slotting epatch increased the gain of proposed antennas and provided a dual band frequency in x and ku bands. In comparison with the conventional microstrip patch antenna, it is clear that there is an increment in the gain along the distance range from air 1 mm to air 6 mm. Compared with the conventional rectangular patch antenna, this antenna can achieve reduction in patch size up to 71%. The dualband response is achieved by etching an inverted ushaped slot from the main radiator. Design of dual frequency antenna at sxbands a linearly polarised dualfrequency antenna is designed at s and xbands. Design of the circular microstrip patch antenna for designing a circular microstrip patch antenna, the calculations are done as below 11.
The proposed antenna is suitable for various applications such as wimax, radar, fixed satellite services, wlan, satellite communication covering s band frequency is presented in this paper. Design of dual band dual polarized microstrip patch antennas core. The values of air, in figure 4, represent the distance in mm between the twosubstrate layers. Dual frequency operation of the antenna has become a necessity for many applications in recent wireless communication systems. Additional benefits of patch antennas is that they are easily fabricated making them cost effective. The frequency of operation of the patch antenna of figure 1 is determined by the length l. This paper presents the design of an 8element microstrip patch antenna mpa array for dualband 5g communications.
The proposed antenna is suggested to be used in a mobile phone handset that covers four frequency. A modified eshaped microstrip patch antenna for dual band in x. The antenna is designed to be used for multiband and wimax applications. Gain of a triangular patch antenna with u slot 0 0. High antenna gain is generally desirable for communications systems, whether terrestrial or based on satellites. Antennas using patches as constitutive elements in an array are also possible. Singlefeed dualpolarized high gain microstrip antenna. The operating frequency of the antenna here is 28ghz with the highest gain of 5. Figure 11 shows the polar patterns of the dual frequency patch antenna at 1. A stable omnidirectional radiation pattern is observed in the operating frequency band. The design specifications for the antenna are given as below.
Pasternacks microstrip patch antenna calculator determines the length and width in millimeters of a rectangular patch antenna. Dual frequency microstrip antenna all dimensions are in mm figure 2. Design of an uwb patch antenna for dual frequency operations. Tested results verify that the proposed antenna owns an enhanced operating 10 db bandwidth of 6. Dualfrequency microstrip antenna all dimensions are in mm figure 2. Microstrip patch antennas mpas consist basically of three layers. Microstrip antenna, its disadvantages and it has been overcome by dual frequency hexagonal microstrip patch antenna using slots. Microstrip antennas because of the poor radiation efficiency have poor gain. This research proposes a dual frequency circularly polarized truncated square aperture patch antenna with slant stripline and lshaped slot for wlan applications. By adjusting the size of these structures, a dual band antenna can be obtained. The modal distributions of hmsa are studied and it was observed that hmsas distribution. Pdf dual frequency microstrip array antenna for sar. Dual band x shape microstrip patch antenna for satellite applications.
The antenna was designed for fr4 printedcircuitboard pcb material with dielectric constant of 4. To achieve this we used microstrip circular patch antenna at 5. Click here to go to our page on circular patch antennas new for september 2018. Figure 12 shows the gain response with frequency, where gain of 0 db was obtained at 1. A compact highgain microstrip patch antenna for dual band wlan. Compact coplanar dualband microstrip patch antennas for.
Their low profile design, often square or rectangular, allows them to be mounted to flat surfaces. Single layer dual band microstrip patch antenna using. At frequencies lower than microwave, microstrip patches dont make sense because of the sizes required. To ease this part of the process, graphs obtained using agilent ads software are used in the design of a dualfrequency patch antenna operating at 1.
Two dual frequency microstrip antennas designed with hfss, that is manufactured by ansoft of the. Pdf new dualfrequency microstrip antennas for wireless. Dualfrequency circularly polarized truncated square. The center frequency will be approximately given by. Microstrip patch antennas are used for communication purposes especially in military and civil applications. Keywords fr4, antenna,patch, hfss, return loss, dual band, gain. In the following, a brief overview of these three types of dualfrequency antennas is presented. At xband a microstrip antenna is on the order of 1 centimeter long easy to realize on softboard technology. In this paper, a quadband, duallayer microstrip antenna was proposed. Parameters are set accordingly and results of microstrip patch antenna with fss layer and microstrip patch antenna without substrate later.
If you wanted to make a microstrip antenna to receive. This paper describes a highgain, dual band lshaped micro strip patch antenna is printed on a fr4 substratefor wlan systems, and has dimensions of 60. Abstracta compact wideband dualfrequency microstrip antenna is proposed in this paper. A simple design of a dual frequency microstrip antenna using a single rectangular patch and a single probe feed is described. Design of a novel dualfrequency microstrip patch antenna for wlan. 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 pair of long slots is symmetrically etched on specific positions of the upper microstrip patch, where the electric field of tm 30 mode is at the peak point, while simultaneously the electric field of tm 50 mode is at the. Dualband microstrip patch antenna array for 5g mobile.
A novel compact dual frequency microstrip antenna sciencedirect. Microstrip patch antennas or simply patch antenna are increasingly useful because the antenna is printed directly onto a circuit board. Fundamental specifications of patch antennas radiation pattern a patch antenna radiates power in certain directions and we say that the antenna has directivity usually expressed in dbi. Design simulation and fabrication of microstrip patch antenna. Jan recently, patch antenna is extensively used in ultrawide band uwb applications and is continuing to fulfill the changing demands of new generation antenna technology. This paper mainly studies the dual frequency characteristics of microstrip antennas. In the antenna design, the parameters were optimized and the wlanenabled dual frequency 2. Citeseerx compact dual frequency patch antenna for s. A low profile, unidirectional, dual layer, and narrow bandwidth microstrip patch antenna is designed to resonate at 2. The antenna composes of two stacked patches with total dimensions of 45 x 45 mm. Single layer dual band microstrip patch antenna using probe feed. Nair a singlefeed dual frequency compact microstrip antenna with a shorting on is described. For the sake of convenience, a summary is included in figure 1. Polar plot of gain of antenna at resonant frequency 4.
Fig 1 microstrip fed patch antenna and its equivalent circuit 920. The shape and size of patch determine the frequency of operation of the antenna and its performance. The radiation pattern, antenna efficiency input impedance was also analyzed. Figure 11 shows the polar patterns of the dualfrequency patch antenna at 1. Simulation results indicate that the maximum antenna radiation efficiency is approximately 80.
By definition, a printed antenna is one that is fabricated using standard photolithography technique. The proposed dual layer microstrip patch antenna has an impedance bandwidth of 2% and the designed antenna shows very low complexity during fabrication. Military antennas also need to have adequate bandwidth and gain to allow high fidelity reception of m code signals. Jul 29, 2016 high antenna gain is generally desirable for communications systems, whether terrestrial or based on satellites. In this paper, a novel compact dualband microstrip patch antenna with dualradiation modes is investigated. The proposed antenna consists of a rectangular ground plane, a ushaped feed probe, and an hshaped slot radiating patch. Analysis and design of circular microstrip patch antenna at 5. This paper highlights the proposed design for a dual band frequency reconfigurable microstrip patch antenna fed through a 50. Properties of a basic microstrip patch a microstrip or patch antenna is a lowprofile antenna that has a number of advantages over other antennas. This work is mainly focused on increasing the gain as well as reducing the size of the unidirectional patch. An antenna prototype is designed, implemented, and measured.
In this paper, a novel compact dual band microstrip patch antenna with dual radiation modes is investigated. The most common version of printed antenna is microstrip antenna, which consists of a metallic patch above a ground plane. Antenna at sband as ground for array at xband in dual. If the antenna had a 100% radiation efficiency, all directivity would be converted to gain. International journal of computer applications 0975 8887 volume 92 no. In order to enhance the bandwidth of the proposed antenna, a parasitic patch is placed at the center of the truncated square aperture slot. Isotropic antenna is considered to have a gain of unity. A patch antenna is a narrowband, widebeam antenna fabricated by etching the antenna element pattern in metal trace bonded to an insulating dielectric substrate, such as a printed circuit board, with a continuous metal layer bonded to the opposite side. A triangular patch antenna for uhf band with microstrip feed. Experimental results of the antenna resonating at frequencies of about. Dualband operation of a microstrip patch antenna on a. A microstrip patch antenna is designed, fabricated on fr 4 dielectric material and a study of patch antenna parameters is made. Microstrip radiators were first proposed as early as 1953 while the first actual microstrip antenna appeared in 1974.
This letter presents a bandwidthenhanced singlelayer differentialfed microstrip patch antenna mpa under the operation of dual radiative tm 30 and tm 50 modes. Antennas having dual polarization can be used to obtain polarization diversity. The antenna is operating in lte band ii having frequencies of 1850 mhz1910 mhz which is uplink frequency. Typical half wave patches have efficiencies well above 90%. P, india abstract here we made an attempt to maximize the gain of microstrip patch antenna. They can be designed in a variety of shapes in order to obtain enhanced gain and bandwidth, dual band and circular polarization to even ultra wideband operation. Bandwidthenhanced highgain microstrip patch antenna. The use of metamaterials in single or multiple layers has been shown to contribute a great deal to the design of a high gain microstrip antenna at 10. The antenna has been designed, modelled and simulated. 3 modification to the antenna to obtain more resonant frequencies.
Design of miniaturized dualband microstrip antenna for. The proposed antenna array is compact with size of 16. Gain enhancement of a microstrip patch antenna using a. Quadband duallayer microstrip antenna design for mobile. The experimental results show that the proposed antenna has achieved wider bandwidth with satisfactory gain by introducing meanderedmicrostrip feeding in assistant of partial ground plane. This leads to the second design of the proposed antenna antenna b as shown in figure 3. Design of a multiband stacked microstrip patch antenna for satellite. This thesis involves the design and analysis of dual band microstrip patch antenna which operates at lower and upper resonating frequency of 3. Design of a novel dualfrequency microstrip patch antenna for. Dual feed microstrip patch antenna for wlan applications doi.
Microstrip antennas have high q q 100 is common, which means that they have small bandwidths. Bandwidth enhancement of a dual band planar monopole. The patch antenna is proposed to tune between two frequencies, i. Dualband operation of a microstrip patch antenna on a duroid. The proposed antenna is suitable for specific applications, such as security and military systems, which require a narrow bandwidth and a small antenna size. Microstrip antennas are relatively inexpensive to manufacture and design because of the simple 2dimensional physical geometry. The proposed design consists of two pairs of small parallel slots on the. This feed arrangement has a key advantage, that the feed and patch can be etched on same substrate which makes it a planar structure 14. A single patch antenna provides a maximum directive gain of around 69 dbi. Current ultrawide bandwidth uwb and high gain antennas include mainly logperiodic antenna, traditional transverse electromagnetic tem horn antenna, spiral antenna, bowtie antenna, tapered slot antenna, and microstrip patch antenna. A simple design of a dualfrequency microstrip antenna using a single rectangular patch and a single probe feed is described. In one hand, its lower operating frequency demonstrates high gain and on the other hand, the upper operating frequency shows circular polarization. Bandwidthenhanced highgain microstrip patch antenna under.
The simulated plot for gain of the antenna is shown in fig. Dual frequency planar microstrip antenna researchgate. Elliptical slot circular patch antenna array with dual. Dualfrequency microstrip antenna for wireless applications. The microstrip antenna design does have some disadvantages such as lack of pattern control, due to its aperature size, and bandwidth, which will be discussed. Dualfrequency circularly polarized truncated square aperture. However, the traditional yagi antenna and microstrip patch antenna have narrow bandwidth. In this work, a novel singlefeed stacked microstrip antenna is proposed for high gain and dual polarization application. Pdf the investigations on two new shortcircuited microstrip patch antennas, which are. The investigations on two new shortcircuited microstrip patch antennas, which are. Dielectric ceramic loaded stripline antennas have several advantages, namely small size, fairly narrow but still wide enough frequency band, and good temperature stability. Figure 16 shows a microstrip antenna or patch antenna for a global positioning system gps receiver, using a high k dielectric substrate.
1450 340 1296 1216 1371 1321 62 1415 1237 1349 587 110 1190 1055 988 981 616 1593 1230 1121 784 303 428 709 684 36 291 1344 55 345 103 405 422 898 309 706 1007 496 1201 25 1068 846