Design of a Triangular Patch Microstrip Antenna on a Substrate of Photonic Crystal Material (original) (raw)
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Simulated performance of a microstrip patch antenna with both photonic crystal substrate and cover
We have simulated the performance of a microstrip patch antenna with a hexagonal low-permittivity photonic crystal used both as substrate and superstrate (cover). The photonic crystal structure was analyzed with the plane wave expansion method. The input return loss, radiation pattern and the directivity of the antenna were calculated using the CST Microwave Studio transient solver based on the finite integration technique (FIT). A comparison between the conventional patch antenna and the proposed antenna is given. It is shown that the presence of the photonic crystal cover is very efficient for improving the radiation directivity.
Optimization of Microstrip Antenna Characteristics Using Photonic Band Gap Structure
T his paper presents a microstrip patch antenna using a photonic band gap (PBG) structure for attaining higher bandwidth. The photonic periodic structure was considered as cross shaped, placed on the ground plane. The simulation results from HFSS Ansoft design showed that surface waves can be suppressed by the periodic structure due to the influence of its forbidden band. As a result, the bandwidth of the proposed antenna was 6.7% higher than the conventional antenna. Moreover, the values of gain and directivity of antenna were more by adding PBG in comparison with the values of the antenna alone.
Finite difference time domain analysis of a photonic crystal substrate patch antenna
Physica B: Condensed Matter, 2005
Planar microstrip patch antennas can achieve a wide range of radiation patterns. However, due to surface-wave losses, they have low bandwidth, low gain, and a potential decrease in radiation efficiency. In order to minimize the surface-wave effects, a photonic-band gap (PBG) substrate is proposed. The PBG structure significantly diminishes the surface-wave modes and thus improves the gain and far-field radiation pattern and efficiency. In this paper, using FDTD, an accurate full-wave analysis of surface-wave propagation in a rectangular microstrip patch antenna with and without PBG is presented. Finally, the antenna fabricated and result of measurement was compared with numerical simulation. r
Radiation properties of a planar antenna on a photonic-crystal substrate
Journal of the Optical Society of America B, 1993
The photonic crystal is investigated as a substrate material for planar antennas in the microwave and millimeter-wave bands. Experimental results are presented for a bow-tie antenna on a (111)-oriented facecentered-cubic photonic-crystal substrate with a band gap between approximately 13 and 16 GHz. When driven at 13.2 GHz, the antenna radiates predominantly into the air rather than into the substrate. This suggests that highly efficient planar antennas can be made on photonic-crystal regions fabricated in semiconductor substrates such as GaAs.
The effects of an electromagnetic crystal substrate on a microstrip patch antenna
IEEE Transactions on Antennas and Propagation, 2002
The effects of a two-dimensional (2-D) electromagnetic bandgap substrate on the performance of a microstrip patch antenna are investigated. The microstrip patch antenna is placed on a defect in the electromagnetic bandgap substrate that localizes the energy under the antenna. Finite-difference time-domain calculations are employed to determine the effects of the substrate. The excitation frequency of the antenna near the resonance frequency of the defect mode can be used to control the coupling between antennas that are placed in an array. Index Terms-Electromagnetic bandgap materials, integration, microstrip patch antennas.
Design and analysis of novel microstrip patch antenna on photonic crystal in THz
Physica B: Condensed Matter, 2018
Recent advancement of communication system requires low cost, minimal weight, low profile and high-performance antenna to execute the demand of the future realization. A high gain novel microstrip patch antenna design is proposed, based on the photonic crystal for terahertz (THz) spectral band applications. This antenna is mounted on polyimide substrate that employs Photonic Band Gap (PBG) crystal and the Gain of 7.934 dB, Directivity 8.612 dBi and VSWR close to unity at resonant frequency of 0.6308 THz. The proposed antenna model is compared with homogeneous polyimide substrate structure based microstrip patch antenna and analyzed the radiation characteristics. Moreover, the performance of designed antenna is investigated with different PBG cylindrical distance, PBG hole radius, curvature radius of patch and substrate heights. The projected design antenna has a bandwidth of 36.25 GHz and −10 dB impedance with operating frequency range varying from 0.6152 THz to 0.6514 THz, hence it can be utilized for detection of explosive and material characterization applications.
The performance characteristics of microstrip patch antennas depend on various characteristics like substrate material selection, patch dimensions, feeding techniques, thickness of the substrates etc.This paper presents the performance investigation of triangular microstrip patch antenna on six different dielectric substrates of same thickness or height (1.5mm).All these antennas are having different dimensions , but resonant frequency and height are same. The six dielectric materials which are investigated are Bakelite, FR4 Glass Epoxy, RO4003, Taconic TLC , RT Duroid and Polyester. The output parameters of all these antennas are simulated using IE3D software. Among the six triangular antenna, antenna with Polyester as a dielectric substrate gives optimum results in terms of Directivity, Gain, Bandwidth and Efficiency.
Design and analysis of novel microstrip patch antenna array based on photonic crystal in THz
Optical and Quantum Electronics, 2022
Recent advancement of communication system requires low cost, minimal weight, low profile and high-performance antenna to execute the demand of the future realization. A high gain novel microstrip patch antenna design is proposed, based on the photonic crystal for terahertz (THz) spectral band applications. This antenna is mounted on polyimide substrate that employs Photonic Band Gap (PBG) crystal and the Gain of 7.934 dB, Directivity 8.612 dBi and VSWR close to unity at resonant frequency of 0.6308 THz. The proposed antenna model is compared with homogeneous polyimide substrate structure based microstrip patch antenna and analyzed the radiation characteristics. Moreover, the performance of designed antenna is investigated with different PBG cylindrical distance, PBG hole radius, curvature radius of patch and substrate heights. The projected design antenna has a bandwidth of 36.25 GHz and −10 dB impedance with operating frequency range varying from 0.6152 THz to 0.6514 THz, hence it can be utilized for detection of explosive and material characterization applications.
Gain Enhancement of a Microstrip Patch Antenna Using a Cylindrical Electromagnetic Crystal Substrate
IEEE Transactions on Antennas and Propagation, 2000
A low profile, unidirectional, dual layer, and narrow bandwidth microstrip patch antenna is designed to resonate at 2.45 GHz. The proposed antenna is suitable for specific applications, such as security and military systems, which require a narrow bandwidth and a small antenna size. This work is mainly focused on increasing the gain as well as reducing the size of the unidirectional patch antenna. The proposed antenna is simulated and measured. According to the simulated and measured results, it is shown that the unidirectional antenna has a higher gain and a higher front to back ratio (F/B) than the bidirectional one. This is achieved by using a second flame retardant layer (FR-4), coated with an annealed copper of 0.035 mm at both sides, with an air gap of 0.04 0 as a reflector. A gain of 5.2 dB with directivity of 7.6 dBi, F/B of 9.5 dB, and −18 dB return losses ( 11 ) are achieved through the use of a dual substrate layer of FR-4 with a relative permittivity of 4.3 and a thickness of 1.6 mm. The proposed dual layer microstrip patch antenna has an impedance bandwidth of 2% and the designed antenna shows very low complexity during fabrication.
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.