Effect of Dielectric Materials on Antenna Performance (original) (raw)
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Effect of Dielectric Constant on the Design of Rectangular Microstrip Antenna
In this work, the effect of dielectric constant on the bandwidth of rectangular microstrip antenna (RMSA) operating at center frequency of 2 GHz is considered. The design of a rectangular microstrip antenna is made with different dielectric materials, the choice of material is based on materials that provide good antenna performance with reduced surface wave loss. Alumina 99.5%, Quartz (Fused) and Roger RT5880 are the materials for the proposed design to achieve a broader bandwidth. The design that gives voltage standing wave ratio (VSWR) ≤ 2 is considered the best for the proposed antenna. The antennas are simulated using Sonnet lite software.
Comparative Study of Microstrip Patch Antenna Using Different Dielectric Materials
Increasing the dielectric constant of substrate material allows shrinking of patch antenna. But this shrinking of dimensions comes with a trade-off in bandwidth, impedance and efficiency. This paper presents the comparative study of Rectangular Shaped Microstrip Patch antenna for different Dielectric constant. The antennas were simulated for purpose the application of 3G communications for resonance frequency 2.1GHz. Five materials with different dielectric constants and substrate height 2.54mm were chosen on for the analysis of their performances. Coaxial Probe-feed methods are used for feeding techniques. Dimension like width, length, feed point location, ground dimension for each patch antenna of different dielectric material are calculated and compared. The comparative study of different patch antenna performance parameter like VSWR, Reflection coefficient, Bandwidth, Impedance, Mismatch loss, Directivity, Gain and Field are analysed and compared. Various tables, graphs showing these comparisons with detailed analysis have been included in this paper. This study was carried out by using FEKO, Electromagnetic solver software
International Journal of Engineering Research and Technology (IJERT), 2014
https://www.ijert.org/effect-of-different-space-dielectrics-on-the-performance-of-the-rectangular-microstrip-patch-antenna https://www.ijert.org/research/effect-of-different-space-dielectrics-on-the-performance-of-the-rectangular-microstrip-patch-antenna-IJERTV3IS031598.pdf In this paper, we have studied the effect of space dielectrics on the microstrip patch antenna. The Resonant frequency used in this design is 2.4 GHz. Three basic parameters as resonant frequency, bandwidth and Insertion loss showed negligible effect against the variation in space dielectric. Resonant frequency and band width showed ±2% tolerance and Insertion loss below-30dB. Thus a dielectric covers of optimized thickness of 0.8mm of LTCC material is placed on the patch. The results are predicted using commercial HFSS finite element method software.
Two-Layer Microstrip Patch Antenna Performance Using Two Different Dielectric Materials
In this study, two-layer dielectric microstrip patch antenna designs at 2.5 GHz frequency have been realized for high antenna performance. Circular and rectangular slit arrangements on the patch are made to improve the result. In this way antenna dimensions have decreased significantly, and performance has increased. FR4 and Duroid were used as dielectrics. The final antenna design with a small size (40x30mm), two-layer substrate and high-performance as 372 MHz (14.88%) bandwidth was obtained with 9.89 dB gain, -35.43 dB return loss at 2.495 GHz.
2018
The probe-fed patch antennas were proposed by changing the parameters such as dielectric materials and dimensions of patch for detail investigation of changes in output characteristics. Four rectangular slots were introduced separately for optimizing the antenna design and characteristics. This study illustrated the changes of output characteristics of an antenna with respect to the number of introduced slots on the radiating patch in addition to the effect of various dielectric materials on antenna performances. The antenna performances were analyzed by plotting the observation of various dielectric materials. The changes of antenna characteristics were also observed by introducing four numbers of slots on each edge of the patch to improve radiation characteristics with a wider impedance bandwidth.
Performance of Microstrip Antenna of Different Substrates and Geometries for S-Band
2014
— In this paper, many techniques are suggested and analyses for rectangular microstrip antenna (RMSA) operating in S-band for 3 GHz as center frequency. Using transmission-line model, analysis was done for the behavior of the antenna for different types of substrates, modified patch geometries and shifted feeding point, operating at S-band (2 to 4GHz). This design of RMSA is made to several dielectric materials, and the selection is based upon which material gives a better antenna performance with reduced surface wave loss. Glass PTFE and Duroid 5880 are the best materials for proposed design to achieve an enhanced Bandwidth (BW) and better mechanical characteristics than using air. These results are simulated using Feko EM solution software version
2015
Selection of proper substrate material is most important parameter when we design microstrip patch antenna. The limitations of micro-strip antenna such as low gain, low efficiency and high return loss can overcome by selecting a proper substrate material, because permittivity of substrate is critical parameter in controlling band width, efficiency and radiation pattern of patch antenna. The substrate materials have two basic properties i.e dielectric constant and loss tangent. Present paper is comparative study of various dielectric constants and its effect on radiation characteristics of rectangular patch antenna such as bandwidth and return loss. The micro-strip antenna consist of a planar resonant radiating element parallel to, but separated, from a ground plane by a thin dielectric substrate (t <<ʎ) was designed.
Performance Analysis of Rectangular Patch Antenna with Dielectric Constants
International Journal of Innovative Technology and Exploring Engineering, 2019
The developments in communication systems, patch antennas play a very significant role in today’s world of communication systems. The most commonly used micro strip patch antennas are Rectangular patch antennas. The rectangular micro strip patch antenna parameters are analyzed for S-band frequency which is used for wireless communications(2.0-2.5GHz). In this design, performance parameters like V.S.W.R, Returnloss, are simulated and radiation patterns are observed. Rectangular patch antenna is designed with uniform and non-uniform linear arrays. The uniform and non-uniform arrays are designed with Dolph-Tschebycheff.
Analysis of Different Substrate Material & Frequency on Microstrip Patch Antenna
2017
In the field of technology, the dimension of things has been smaller & smaller. In microwave frequency range we have various applications such as Bluetooth, GSM & WLAN etc. To use such applications we require a different size of the antenna. As the technology becomes more advance the demand of making such antenna which operates at microwave frequency is needed. To fulfill this requirement we design microstrip patch antenna by selecting proper substrate material which gives the high gain of 5.20dB. This antenna is analyzed & simulated by using Ansoft HFSS software. In this paper, another comparative study has been discussed to know the performance of patch antenna with preferred dielectric substrate material at different frequency band i.e. at L, S, C, & Q band. Keywords— Rectangular Microstrip Antenna, Dielectric Substrate, Gain, Return loss, VSWR.