Micro strip patch antenna (MPA)

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A Review of Micro-strip Patch antenna for UWB Frequency Range

A Review of Micro-strip Patch antenna for UWB Frequency Range

Abstract- According to the antenna theory, the main advantage of micro strip patch antennas (MPA) are low profile, applicable to planar and non planar surfaces, uncomplicated and cheap to fabricate using current printed circuit technology. Therefore in this modern era micro strip patch antenna widely use in communication accessories. In this paper survey of some previous years shows that the various antenna design methods for ultra wideband range like edge tapering slot cutting U-shape, DGS based micro strip patch antennas, patch antenna with partial ground plane, parasitic patch antenna, fractal antenna and reconfigurable antennas. According to the presented study of these antennas for UWB range regulated on single band, double band and multi band frequencies.
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Micro Strip Patch Antenna Characteristics Using Different Dielectric Substrates

Micro Strip Patch Antenna Characteristics Using Different Dielectric Substrates

A micro strip antenna basically consists of a two parallel conducting layers separated by a single thin di electric substrate. The lower conducting substance acts as ground plane and the upper conductor acts as radiator. Larger ground plane gives better performance but off course makes antenna big size. Micro strip antenna has different shapes like rectangle, circular, square, triangle, for better performance we use rectangle micro strip patch antenna. The resonant frequency is determined by resonance frequency. The difference between electrical and physical size is mainly depends on PCB thickness and dielectric constant. For the performance evaluation different patch that we used here is quartz glass, Taconic, RD 4003, quartz crystal and RT duroid 5880. The size of the substrate determines the performance of the micro strip patch antenna.
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On Various Design of Micro Strip Patch Antenna Survey

On Various Design of Micro Strip Patch Antenna Survey

Antenna is a transducer designed to transmit or receive electromagnetic waves (EM). Microstrip antenna has several advantages over conventional antenna. It consists of a radiating patch on one side of dielectric substrate and has a ground plane on other side. Microstrip antennas are used for many commercial purposes due to their light weight and low cost. The recent demands of compact wireless devices propel the demand of pattern reconfigurable antennas. Reconfigurable microstrip antenna provides numerous application and offer more versatility as compared to conventional antennas which offer one function in a single antenna. They can provide diversity function in operating frequency, radiation pattern and polarization to mobile communications. The main disadvantages of microstrip patch antenna radiation performance including narrow bandwidth. Various techniques have been included to overcome these disadvantages.Microstrip patch antenna and side view of micro strip patch antenna as shown bellow figure1 and figure2 respectively.
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Double-Elliptical Shaped Miniaturized Micro Strip Patch Antenna for Ultra-Wide Band Applications

Double-Elliptical Shaped Miniaturized Micro Strip Patch Antenna for Ultra-Wide Band Applications

Abstract—Greater design flexibility and newer miniaturization techniques are highly sought after by the commercial antenna industry and researchers. Micro-Strip Patch Antenna (MSPA) is finding huge applications in various fields of communication. In the present paper, the novel idea of Double- Elliptical Micro-strip Patch Antenna (DEMPA) is proposed for antenna miniaturization and higher design flexibility. Double-Elliptical Patch (DEP) is made as the combination of two half-elliptical patches having the same minor axis and different semi-major axes or the same major axis and different semi-minor axes. A DEP with different lengths of horizontally arranged semi-major axes and centrally given feed was considered here. The length of semi-major axis for right half-elliptical patch was varied while keeping the length of semi-major axis for left half-elliptical patch fixed. Design of DEMPA was carried out using Ansoft HFSS software, and the antenna has been fabricated and tested. The measured results were in good agreement with the simulated ones. The percentage reduction in effective patch area was found to be 8.33 for DEMPA compared to the corresponding elliptical patch antenna. The DEMPA covered the entire frequency range of Ultra Wide Band (UWB). With this novel shape, greater design flexibility along with miniaturization is achieved. The axial ratio analysis showed that the resulted antenna was of linear polarization.
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Design Techniques for Elliptical Micro Strip Patch Antenna and Their Effects on Antenna Performance

Design Techniques for Elliptical Micro Strip Patch Antenna and Their Effects on Antenna Performance

Circular polarization and dual resonant frequencies are required in many real time applications such as radar, communication, telecommunication and navigation systems. For wireless applications, the circular polarization can be achieved by varying the shape of or by the use of multiple feeds for rectangular micro-strip patch antenna. But, with the help of only a single feed, circular polarization can be achieved for an elliptical patch antenna which is fed along a radial line inclined at +45 0 to its major axis [1]. The positive sign yields Left-Hand Circularly Polarized (LHCP) wave and the negative sign yields Right-Hand Circularly Polarized (RHCP) wave. For EMPA with small values of eccentricity, left-hand or right-hand circular polarization may be achieved in a narrow frequency band and the currents, internal fields and radiated fields of antenna are expressed in terms of Mathieu Functions. A theoretical study was conducted to calculate the dual-resonant frequency of the dominant even and odd modes and for predicting the existence of circular polarizations of EMPAs [2].
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A Review on Ultra wideband Micro Strip Patch Antenna

A Review on Ultra wideband Micro Strip Patch Antenna

This is a review paper demonstrated that study of the Micro strip Patch Antenna using UWB frequency ranges for Wireless communication devices applications. After study of literature survey it is concluded that multi resonance characteristics of patch antenna like return loss, VSWR, Radiation pattern, impedance bandwidth can be improved by changing the parameters such as operating frequency, ground plane structure dimensions, feeding techniques. These are many aspects that affect the performance of the antenna within UWB ranges for many wireless devices communication applications.
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Design & Analysis of 8GHz X-Band Micro-strip Patch Antenna

Design & Analysis of 8GHz X-Band Micro-strip Patch Antenna

ABSTRACT: The study of micro strip patch antennas has made great progress in recent years. Compared with conventional antennas, micro strip patch antennas have more advantages and better prospects. They are lighter in weight, low volume, low cost, low profile, smaller in dimension and ease of fabrication and conformity. Moreover, the micro strip patch antennas can provide dual and circular polarizations, dual-frequency operation, frequency agility, broad band-width, feed line flexibility, and beam scanning omnidirectional patterning. In this paper we discuss the micro strip antenna, types of microstrip antenna, feeding techniques and application of micro strip patch antenna with their advantage and disadvantages over conventional microwave antennas. We simulated for radiation pattern up to 1.8. Our antenna height 2.88 mm after simulation we got frequency 2GHz. From simulation patch antenna resonating at 1.8 having a return loss of -12.5dB and those -3dB and -10dB bandwidths are 0.74GHz and 0.25GHz, due to the reason that the radio amplifier reduces the output power, can be more worse and can become unstable if the VSWR is large. KEYWORDS:Duroid, FR4, H-plane, E-plane, CST Studio, ABS Box.
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Gain Enhancement of Micro strip Patch Antenna with Slotting Technique

Gain Enhancement of Micro strip Patch Antenna with Slotting Technique

A theoretical review on micro strip patch antenna is presented in this paper. Some effect of disadvantages can be minimized. Increasing gain ,bandwidth and lowering VSWR for making patch antenna for application specific is achieved by introducing slots in the geometries of patch antenna. As compared to conventional micro-strip antenna gain is improved, VSWR is reduced so thereby overall efficiency of the antenna increases. Different slots shaped are compared with without slot and it is found that bandwidth of conventional rectangular micro strip antenna can be enhanced respectively using A, C, E, L, and U-patch over the substrate. The E-shaped patch antenna has the highest Gain followed by A, C, L-shaped patch antenna and U-shaped patch antenna.
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Design and Analysis of Compact Micro strip Patch Antenna for WLAN Application

Design and Analysis of Compact Micro strip Patch Antenna for WLAN Application

In this study, a design and analysis of simple line fed micro strip patch antenna for global WLAN applications has been achieved. The proposed antenna was designed to operate at 5.6GHz for Standards IEEE 802.11b WLAN applications. The Substrates are FR4 and Rogger RT 5880 are used to achieve -21dB and -28db of reflection co efficient .using small dielectric constant substrate getting better Frequency. The dimensions of the feed line affect the reflection co efficient.

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Optimization and Return loss Reduction Of Micro strip Patch Antenna

Optimization and Return loss Reduction Of Micro strip Patch Antenna

A micro strip antenna is wide beam width, narrowband antenna which is fabricated by etching an antenna element in a metal to an insulating dielectric substrate with metal layer bonded to the opposite side of substrate which forms a ground plane. The rectangular Micro strip patch antenna is the widely used for all the types of Micro strip antennas that are present. Its fabrication is very easy, robust design and of course very easy to handle. In Micro strip patch antenna when source signal is applied at patch, the EM waves will be radiated. This patch is a strip conductor of length L and width W on a dielectric substrate with constant εr, height of the patch being h and thickness t is supported by a ground plane.
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Design of Frequency Reconfigurable Micro-Strip Patch Antenna for Wireless Applications

Design of Frequency Reconfigurable Micro-Strip Patch Antenna for Wireless Applications

The triple band base antenna is described in this section. The design starts with a micro-strip patch antenna where Figure 1 demonstrates the geometry of the designed patch antenna with partial conducting ground plane. The antenna comprised of rectangular rings which contribute to the three resonance frequency of the proposed antenna.The optimal design of the proposed antenna has small overall dimension of 46  38  0.5mm 3 .FR4 epoxy substrate with a permittivity of ε r = 4.4 and substrate thickness of h= 0.5 mm is used for the antenna design.
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Broad  Band Micro strip Patch Antenna Design a Critical review

Broad  Band Micro strip Patch Antenna Design a Critical review

By using two stacked shorted patch and make both patches radiate equally as possible and making radiation quality factor as low as possible, one can achieve enhance impedance bandwidth for fixed antenna volume. The innovative technique of creating the defect in the ground plane. In this technique a slot is made on ground plane of microstrip antenna. By increasing the length of slot impedance bandwidth can be increased. As slotted patch increases the current path length same can be applied to the ground plane. Design of a compact and broadband microstrip patch antenna with slotted ground was proposed by J. S. Kuo. Here three identical slots are made on ground plane aligned with equal spacing.[19] Mitesh Purohit and Shailesh Khant have reviewed and surveyed various Bandwidth enhancement techniques of Microstrip Patch Antenna. If one of any above mentioning techniques Bandwidth of Microstrip Patch Antenna is used, it can be improved significantly which will overcome the limitation of Microstrip Patch Antenna such as narrow Bandwidth. Out of all the techniques Multilayered Technique yield maximum bandwidth. The authors have investigated four methods of improving the broad band performance of the antenna. 1. Multilayered configuration of Broadband MPA. 2. Stacked Multiresonator MPA. 3. Modified Shape Patch Broadband MPA. 4. Planar Multiresonator configuration of Broadband MPA. Out of all mentioned techniques Multilayered Technique yield maximum bandwidth.[20] The success of this research lies in investigating the different configuration of the multi-layered antenna. The stacking is tested followed by changing the shape of the reonating patch. In the end the authors have
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Enhancement of Bandwidth Using U Slot Micro strip Patch Antenna Operating at TM02 Mode

Enhancement of Bandwidth Using U Slot Micro strip Patch Antenna Operating at TM02 Mode

Indoor wireless links have intrinsic characteristics that affect the system performance, such as the multipath effect that causes signal fading, and interference effect from adjacent cells that degrades the bit error rate. From the physical layer perspective, one solution to combat these impairments is the use of directional antennas rather than the traditional omnidirectional ones [1]. They have the ability to confine the power in certain directions instead of scattering the power everywhere. As a result of less power loss toward unwanted directions, the multi-path and interference effects are reduced. Directional antennas can be single or dual/multi- beam. Dual/multi-beam antennas are antennas that have more than one directive beam from a single aperture. These antennas are useful for indoor wireless systems which require coverage of multiple areas [2], as they reduce the required number of antennas and are found to improve the link quality [3], resulting in easier net-work deployment. Micro-strip antennas have been widely used in many modern communication systems, because of its robustness, planar profile, and low cost. Most of these antennas operate at their fundamental mode, which gives a broadside beam [4]. Micro-strip antenna operating at the higher order mode has dual symmetric radiation beams, with each beam directed at respectively [5]–[7]. It is well known that the major drawback of a micro-strip antenna is its narrow bandwidth (3%). One of the popular techniques for broadening the patch antenna bandwidth is to incorporate a U-slot on its surface as proposed in [8] and [9]. However, the U-slot technique was studied only at the Fundamental mode of the patch [10]. To the best of authors’ knowledge, there is no published report on the study of the U-slot patch Antenna excited at the higher order mode.
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Design of Millimeter Wave Micro strip Patch Antenna for MIMO Communication

Design of Millimeter Wave Micro strip Patch Antenna for MIMO Communication

Multi-user MIMO (MU-MIMO) is a set of multiple- input and multiple-output technologies for wireless communication, in which a set of users or wireless terminals, each with one or more antennas, communicate with each other. In contrast, single-user MIMO considers a single multi- antenna transmitter communicating with a single multi- antenna receiver. In a similar way that OFDMA adds multiple access (multi-user) capabilities to OFDM, MU-MIMO adds multiple access (multi-user) capabilities to MIMO. MU- MIMO has been investigated since the beginning of research into multi-antenna communication, including work by Telatar on the capacity of the MU-MIMO uplink.SDMA, massive MIMO, coordinated multipoint (CoMP) and ad hoc MIMO are all related to MU-MIMO; each of those technologies often leverage spatial degrees of freedom to separate users.Multi-user MIMO (MU-MIMO) can leverage multiple users as spatially distributed transmission resources, at the cost of somewhat more expensive signal processing.
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Design Simulation and Performance Analysis of Strip-Line Feed Rectangular Micro-Strip Patch Antenna

Design Simulation and Performance Analysis of Strip-Line Feed Rectangular Micro-Strip Patch Antenna

Lastly, substrate thickness is another important designparameter. Thick substrate increases the fringing field at the patch periphery like low dielectric constant and thus increases the radiated power. The height of dielectric substrate (h) of the microstrip patch antenna with stripline feed is to be used in C-band range frequencies. Hence, the height of dielectric substrate employed in this design of antenna is h=1.6 mm.

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Defected Ground Micro strip Patch Antenna For WLAN applications

Defected Ground Micro strip Patch Antenna For WLAN applications

In this paper we demonstrated DGS based microstrip rectangular patch antenna (MRPA) for eight multiband radio applications. Initially MRPA with full ground is designed and simulated for the band of 2.5GHZ to 8.8GHZ with gain of 2.5dB. Later for validation and study the effect of ground, the defect in terms of size reduction as quarter and half in ground at left has been introduced. Based on comparison the better performance and proposed half ground left (HGL) structure has been fabricated and tested at 2.5-9.2 GHZ frequency range with eight resonance and 4.3 dBi gain.
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EFFECT OF EXCITATION TECHNIQUES ON THE RADIATION PARAMETERS OF MULTIBAND MICROSTRIP PATCH ANTENNA: DESIGN AND ANALYSIS

EFFECT OF EXCITATION TECHNIQUES ON THE RADIATION PARAMETERS OF MULTIBAND MICROSTRIP PATCH ANTENNA: DESIGN AND ANALYSIS

Micro strip patch antenna’s excitation techniques can be classified into two types- contacting and non-contacting. In the contacting method, RF power is fed directly to the radiating patch using a connecting element. In the non-contacting scheme, electromagnetic field coupling is done to transfer power between the micro strip line and the radiating patch [9].

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Bandwidth Enhancement Techniques using Stacked Microstrip Patch Antennas

Bandwidth Enhancement Techniques using Stacked Microstrip Patch Antennas

Figure 3: Common shapes of micro strip patch elements Microstrip patch antennas radiate primarily because of the fringing fields between the patch edge and the ground plane. For improving the antenna performance a thick dielectric substrate having a low dielectric constant is desirable since it gives a good efficiency, widebandwidth and better radiation pattern but such configuration leads to a larger antenna size. So in order to design an optimized micro strip patch antenna the substrates with higher dielectric constants must be used which are less efficient and result in narrower bandwidth. Hence there must be trade-off between the antenna dimensions and antenna performance.
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GAIN AND DIRECTIVITY ENHANCEMENT OF RECTANGULAR MICROSTRIP PATCH ANTENNA USING HFSS

GAIN AND DIRECTIVITY ENHANCEMENT OF RECTANGULAR MICROSTRIP PATCH ANTENNA USING HFSS

The dielectric value of Roger material is 2.2 which is the most recommended material for the designing of the micro strip patch antenna. By using these materials the values of designing parameters and the size of the antenna is reduced. It produces the maximum radiation pattern along its transmission side. This material is used because the entire structure of the antenna is minimized, cost of the designing procedure is reduced and at the same time we get output of the micro strip patch antenna in a good and accurate manner.
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A NEW SOFT SET BASED PRUNING ALGORITHM FOR ENSEMBLE METHOD

A NEW SOFT SET BASED PRUNING ALGORITHM FOR ENSEMBLE METHOD

The fig.3 shows the design of with and without truncation circularly polarized micro strip patch antenna with meandered slot the dimensions of the designed model are presented in table 1&2 .The coaxial feeding is used in this model with 50ohms impedance at feed point the antenna is prototyped on RT Duroid substrate with dielectric constant 2.33 and thickness h= 1.6 mm. the operating fundamental frequency is 1.5 GHz.

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