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In this article, a bandwidth-enhanced metasurface has been designed using single circular split ring as unit cell on the top surface of a metal backed FR4 substrate. The structure behaves as cross polarization conversion (CPC) metasurface over full width at half maxima (FWHM) bandwidth of 12.94 GHz ranging from 9.44 GHz to 22.38 GHz. The proposed CPC metasurface maintains bandwidth enhancement upto...
This microstrip dual-band bandpass filter consists of double open-ended resonators and dumbbells designed by using the concept of symmetry. Two transmissions zero appear by zero-degree feed position. The proposed bandpass filter is created to support WLAN applications at 2.45 GHz and 5.20 GHz, respectively. Both insertion losses are greater than −0.9 dB and the return losses are below −18 dB. The...
This paper presents a slotted-rectangular patch antenna with proximity-coupled feed operated at dual band of millimeter-wave (mmV) frequencies, 28GHz and 38GHz. The antenna was built in multilayer substrate construct by 10-layers Low temperature Co-fiber Ceramic (LTCC) with 5 mils thickness each. The slotted-patch and thick substrate are configured to enhance the bandwidth and obtain a good result...
This paper presents the development of dual-band patch antenna incorporated with split ring resonator (SRR) for Global Positioning System (GPS) and Wireless Local Area Network (WLAN) application. The antenna is composed of 3 layers of copper conductor flanking 2 layers of FR4 Epoxy dielectric substrate with the total thickness of 1.6mm and the dimension of 78.6mm × 48.4mm. The characterization shows...
This paper proposes small CRPA arrays with high-dielectric ceramic superstrates for dual-band operation. Each array element consists of inner and outer microstrip rings printed on a high-dielectric substrate, and a hybrid chip coupler is used for quadrature excitation to achieve circular polarization. The superstrates with high relative permittivity are designed to have a cylindrical shape and are...
A novel angular independent dual-band FSS for multi-frequency communication is discussed in this letter. The proposed FSS with closely spaced response is consist of improved cross-shaped metal strips and a dielectric substrate. The unit cell size of the proposed FSS is 0.13λ×0.13λ where λ corresponds to the wavelength of the first resonant frequency. The proposed FSS exhibits dual stop band characteristics...
This paper presents a dual-band design of reflectarray antenna by using metallic elements for high energy efficiency at 28 and 60GHz bands. The dual-band operation is created by considering the frequency bands below and above the cutoff frequency of metallic waveguides. This frequency band separation differentiates the waveguide's characteristics as a resonant and non-resonant reflecting elements,...
The dual band MIMO antenna composed of inverted L antenna is proposed and numerically analyzed. The design frequency is 2.4 GHz to 2.5 GHz, 5.15 GHz to 5.35 GHz. Inverted L antenna is formed by the coplanar waveguide. The parasitic planar rectangular loop is placed above the of inverted L antenna. When the size of conducting plane is 51 mm by 48 mm, the S11 less than −10 dB is satisfied from 2.4 GHz...
Characteristics of a dual broadband antenna are investigated. The antenna consists of crossed elliptical probes, L-shaped slits, and split circular ground-planes. The proposed antenna covers various widely-employed frequency standards: IEEE 802.11b/g/n, IEEE 802.16, GSM, UMTS and LTE. The design and investigation are based on numerical simulations. The dual broad-bandwidths are 1.46 GHz (1.69–3.15...
A single or dual band selectable metamaterial absorber constituted by a toppled “H” like shaped structure with four diamond shaped patch is presented in this paper. Attached to the diamond shaped patches are copper switches (S1, S2, S3, & S4) which are used in switching operational frequency/operational modes The proposed structured demonstrated single or dual band operation mode reconfiguration...
A subwavelength superstrate antenna operated at dual-band is proposed using a metasurface (MTS). To design the proposed antenna, the MTS as a partially reflective surface (PRS) has a zero-degree reflection phase at dual-band and is composed of a substrate, periodic metallic square patches and rings on one side, and periodic metallic meshes on the other side. To satisfy the resonance condition of Fabry-Perot...
This paper proposes a dual-band integrated horizontally polarized antenna composed of an alternately arranged frequency selective reflector (FSR) and a bent dipole element. The antenna is composed of a FSR backed dipole antenna designed in 3.5GHz band and it is placed in front of 2GHz band reflector backed dipole antenna. It is found that the alternate FSR configuration is suitable and there is an...
In this paper, a dual-band dipole with pattern configuration, FPC structure antenna is proposed. By controlling the pin diodes on the reflectors, three modes of radiation pattern are generated for 2G and 5G, respectively, and Reconfiguration antenna can be achieved. DC trace and RF trace are highly integrated and easy to combine with electronic products. Results of measurement for return loss, radiation...
This paper presents the design of a palm-sized metamaterial antenna system having reconfigurable polarization as well as dual-band characteristics. Basically, three antennas are laid by 45 degrees in order and excited by a compact metamaterial equal-ratio and equal-phase power-splitter, and the radiated fields of the antennas are mixed to turn the vector of the polarization to another. The legitimacy...
Meta-surface inspired antenna (called MACKEY) which works not only in free space but also on metal plates, was proposed. In this paper, a dual-band MACKEY device, in which the position of the dipole antenna is changed from the center of the substrate, is proposed. Additionally, the conditions for controlling the resonance frequencies are clarified.
This paper proposes a dual-band conformal antenna which resonates at lower WLAN (2.4 GHz) and high WLAN (5.8 GHz) frequency bands. And for both the bands, the conformal antenna has perfect omnidirectional radiation pattern. The proposed antenna is conformed onto a cylindrical structure of radius 200 mm. And the electromagnetic model and parametric analysis of the proposed antenna is developed in HFSS...
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