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In this paper a linearly polarization reconfigurable substrate integrated waveguide (SIW) circular ring slot antenna for 5.8 GHz ISM band is proposed. The antenna consists of two dielectric layers: a feeding layer and a radiator layer. In the feeding layer, an SIW operating in the fundamental mode TE10 is accommodated. The radiator layer, which is fed by the SIW, contains etched circular ring-slot...
This paper contemplate a theoretical analysis of a pattern reconfigurable antenna using annular slot antenna operating in low frequency. A shorting pin is inserted to allow the annular slot antenna to have an omni-directional radiation pattern like a monopole antenna. The reconfigurable antenna consists of numerous metal cylinders arranged around the annular slot antenna. By controlling pin diodes...
This paper presents the concept of substrate integrated waveguide (SIW) technology along with superstrate layer, which is used to design a high gain antenna for 79 GHz automotive short range radar (SRR) applications. The maximum gain of a single antenna with superstrate layer is 14.6 dBi at 79 GHz, which is higher than the gain of a classical 2 ×2 array. It is found that the gain of a single superstrate...
In this paper, a half mode SIW based semi-circular antenna with co-axial feed has been designed for dual band operation. The fundamental resonating frequency is found to operate at 4.66 GHz while the next higher mode is at 8.3 GHz. The antenna performance is optimized through parametric studies and the dual band antenna is designed using Arlon AD270 substrate. Simulation studies have been carried...
Recently, paper has been mentioned in many research studies [1-4] as a good choice of a substrate material for flexible electronics. In this paper, the E4D paper has been characterized by the cavity perturbation method, then a monopole antenna structure, called “Sapin” by its shape, has been designed on it to cover a very wide frequency range including two WLAN bands. The proposed antenna is rather...
In this paper, a quarter mode SIW based co-axial fed triangular antenna has been designed to operate at 2.57 GHz spectrum. Metallic vias are placed at the bottom edge of the triangular antenna to make it PEC wall while the other sides devoid of metallic vias resembles PMC walls. The antenna is miniaturized by the insertion of a narrow rectangular slit placed horizontally near the centre of the triangle...
In the given paper a Dielectric Resonator Integrated Substrate Integrated Waveguide (SIW) antenna array is proposed for enhanced performance. Two cylindrical structures are mounted on the antenna to form a dielectric resonator, along with periodic coaxial via and resonating slots in the top surface which resulted in an enhanced gain of about 13.6dB. The different antenna parameters are analyzed and...
This paper presents the design, simulation and implementation of a novel Koch curve fractal antenna, developed according to the second iteration of the Koch snowflake fractal for 2.3 GHz, 2.4 GHz and 2.45 GHz. The measurements of the simulated and fabricated antenna show good agreement for the operating frequencies and desirable performance in gain, bandwidth and VSWR parameters. Being a compact antenna,...
In this paper we propose a new design of multiband coplanar antenna based on split ring resonator (SRR), which can be used for several applications. Into the top layer of antenna substrate, two gaps with the shape of a bow-tie rounded are printed symmetrically. Then, we investigate the properties of SRR to improve the performances of the antenna. The proposed antenna covers many frequency namely 1...
In this paper, a novel dumbbell-shaped slot alongwith thin substrate integrated waveguide (SIW) cavity backingis used to design dual-band slot antenna. The design in thispaper has unidirectional radiation pattern, high gain, high(FTBR) at each resonant frequency while having low profile, planar configuration. The unique slot shape creates complexcurrent distribution at different frequencies that results...
In this paper, the performance of Rectangular Microstrip Antenna (RMSA) is analyzed by changing the substrate materials. RMSA is designed to operate for 3GHz resonant frequency for various substrate materials. A comparison has been done in terms of reflection coefficient, VSWR, gain, efficiency, radiation pattern and cost. The simulation analysis shows the maximum bandwidth of 82MHz when Polystyrene...
This paper presents a broadband, dual-polarized substrate integrated waveguide cavity-backed slot antenna. In this design, high-order cavity resonances are used to generate arbitrary levels of inclined linear polarization. The antenna can provide an adjustable inclined linearly polarized with an aspect ratio of Ex/Ey ranging from 0.11 to 0.69. The proposed antenna provides fractional impedance bandwidth...
A novel substrate integrated waveguide (SIW) fed horizontally polarized end-fire magneto-electric (ME) dipole antenna is proposed. The antenna utilizes 3 layers of substrate to form an open-ended SIW with horizontally polarization which acts as magneto dipole. Two pairs of metal strips are added as electric dipoles. It possesses the advantages of the ME dipole such as symmetrical radiation patterns,...
A high gain bow-tie antenna on indium phosphide (InP) substrate loaded with a bullet silicon lens is proposed. To increase the gain and efficiency of the on-chip antenna, hemisphere silicon lens and bullet silicon lens are loaded to the substrate of a bow-tie antenna respectively. Reflection coefficients and far field radiation patterns are simulated using CST. High gain with high efficiency and wide...
Propagation of surface waves modes on ungrounded dielectric slab of ceramic alumina with εr= 9.8 and 635 μm of electrically thick height at 60 GHz is explored. An approximate graphical technique is implemented to determine the unknown propagation constants kx and α, to achieve a solution for Helmholtz wave equations, for each TE and TM modes. It also indeed provides a physical insight of existing...
Microstrip patch antennas are widely used in microwave applications. The substrate used in their realization is a key parameter. On one hand, it may be considered as a technological level to ensure good performance (efficiency, bandwidth, radiation). On the other hand, speaking of the economic side, it may be used in order to obtain cheap antennas. In this work, we are interested in the use of two...
In this paper we use the paper as a substrate for the design of UHF RFID Tag. The paper use is intended to reduce the cost of manufacturing tags and also preserve the environment because the paper is a ubiquitous material with low cost and friend of the environment which will facilitate deployment of the RFID system at large scale. The design is a meander antenna, which will reduce the size of the...
A technique is proposed to generate a dual-beam and broad beamwidth radiation in the $E$ -plane of a printed bow-tie antenna operating over 57–64 GHz. This is achieved by artificially modifying the dielectric constant of the antenna substrate using arrays of metamaterial inclusions realized using stub-loaded H-shaped unit cells to provide a high index of refraction. The H-shaped inclusions are tilted...
In order to keep pace with the growing research and development on millimetre-wave (MMW) antennas for the fifth generation (5G) networks, this paper integrates the frequency reconfigurability in a flexible antenna operating at MMW frequency spectrum. The proposed antenna is designed on liquid crystal polymer (LCP) substrate which is currently well recognised for its distinguishing performance at high...
The radiation pattern of a balance dipole antenna feeds with odd mode (or differential mode) transmission line is symmetry for H-plane pattern. Unfortunately, if the transmission line is a single ended or defect odd mode the radiation pattern will be vector summation of antenna itself and the unbalance transmission. Except for the distorted radiation pattern, the impedance will also be affected by...
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