Equations 11 and 12 determine the minimum ground length and width that should be used with this particular design.
Comparison rectangular and circular sector microstrip antenna. The effective dielectric constant impacts the speed at which electric energy travels through this media.
The microstrip antenna's radiation arises from the fringing fields, which are due to the advantageous voltage distribution; hence the radiation arises due to the voltage and not the current.
In this paper, selected three parameters are: This characteristic is very important in radiator devices such as antennas. This has been done by applying parametric sweep for locating the feed point in the full range of x-axis in the window of transient solver.
Introduction Modern Wireless communication Systems require low profile, lightweight, high gain and simple structure antennas to assure reliability, mobility, and high efficiency. Specifications[ edit ] The dielectric loading of a microstrip antenna affects both its radiation pattern and impedance bandwidth.
Comparison Proposed Array with Literature In Table 4 we recapitulate characteristics of our proposed array and other array in literature . Further, the details of the proposed design performance are presented and discussed. Far field domain for T-shaped patch antenna.
The ability to create high gain arrays in a low-profile antenna is one reason that patch arrays are common on airplanes and in other military applications. Some patch antennas do not use a dielectric substrate and instead are made of a metal patch mounted above a ground plane using dielectric spacers; the resulting structure is less rugged but has a wider bandwidth.
Co-polarization is the intended antenna polarization. Furthermore it is also observed that arrays provide beam steering for both patch shape see Figure 1 5.
The proposed shape is circular sector patch. It is called element factor. Although this antenna was designed for WLAN band application, the design concept can be extended to other frequency bands of interest by cutting various slots on the patch or in the ground, thus making the ground a defected ground structure.
Different shapes of microstrip patch antennas are possible depending on the characteristics requirement like the bandwidth, gain and efficiency for a specific application [9,10].
Geometry of Microstrip Patch Antenna. This results in an impedance change seen from the edge of the patch decreasing as a squared cosine function moving towards the center.
In this derivation the admittance is calculated using Equations 67and 8. Dimensions for rectangular microstrip patch.
Linear phased array . In the second part of paper, we used antenna array to overcome the problem of low gain, several shapes of both rectangular and circular sector microstrip antennas arrays were designed. Equation 3 Equation 5 The actual length of the antenna is determined by two factors: From comparison with literature , we proved the ability of using circular sector patch antenna array with same performance of rectangular patch with interesting dimension and circular polarization.
Figure 1 3 shows the interface for designing arrays, we can we can define array geometry: Here microstrip patch antenna is the best choice to fulfill all the above requirements.
Third section presents a comparison between both shapes. Referring to studies performed on more antenna arrays that the expression of the general network is as follows : Circular sector and rectangular patch antenna structure are shown in Figure 1.
In Figure 1 6, we can see that phase front is adjusted to steer the beam by individual control of the phase of excitation of each radiating element. Patch Antenna This example discusses a microstrip patch antenna using the air substrate.
Thus the antennas were designed and analyzed for operating in the air or atmosphere. The proposed antenna exhibits a bandwidth of about Patch Width Numerically, the width of the microstrip patch can be calculated using the equation as  where c is the velocity of light in free space, f0 is the resonant frequency and is the dielectric constant of the substrate.
Axial ratio for rectangular microstip antenna fed by microstrip line and coax cable. Material Parameters for selected materials. The patch antenna creates a specific conductive structure in the environment. Which justify that the gain and directivity of a planar array is lower than linear array.
Design of Linear Array A uniform array is defined by uniformly-spaced identical elements of equal magnitude with a linearly progressive phase from element to element see Figure 1 1. Study of Antenna Array 3. 8. C ONCLUSION AND F UTURE SCOPE.
Thus the design and simulation of Microstrip rectangular patch antenna was successfully designed and analyzed using Ansoft HFSS.
The performance parameters were achieved with Return loss dB, gain dB and bandwidth MHz for rectangular patch antenna. Point A should be 0,0 Point B should be L,W where L and W are the Length and Width that you calculated for the PATCH • Draw > Primitive > Rectangle, draw a random rectangle – this will be your feedline antenna.
Thesis of miniaturization of patch antenna using DGS. The Rectangular Microstrip Patch antenna with slots and ground plane structure has been proposed. The Microstrip Rectangular patch antenna with microstrip line feed is designed for center frequency of GHz for Biomedical application has been presented here and.
Design and Analysis of Microstrip Patch Antenna Design and Analysis of Microstrip Patch Antenna Arrays In this thesis; a compact rectangular patch antennas are designed and tested for GPS devices at GHz, and for a satellite TV signal at GHz and. The Rectangular Microstrip Patch Antenna is designed on FR-4(lossy) substrate at 50 matching impedance, dielec- tric constant= and height from the ground plane d=douglasishere.com parameter of rectangular microstrip patch antenna.Rectangular patch antenna