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A wide bandwidth, broad beam-width microstrip antenna element is reported for active phased array application. The antenna element offers a return loss better than −10dB over a bandwidth of 24.82% in Ku-band with beam-widths of 134° in H-plane and 126° in E-plane, respectively. The antenna is capable of realizing two orthogonal linear polarizations and a circular polarization respectively when different...
Future broadband mobile communication networks such as 5G and beyond will most likely use millimeter-wave frequencies. There is, however, little knowledge about millimeter-wave antenna design for cellular mobile devices. This paper reports a microstrip grid array antenna on an FR4 substrate in a standard PCB technology. It is shown that the microstrip grid array antenna covers a footprint of 15×15...
In this paper, the design of Substrate Integrated Waveguide (SIW) resonant slot antenna to operate in V-band applications has been realized. The basic structure of unit cell has been designed over Rogers RT/duroid 5880 dielectric substrate with dielectric constant of 2.2, loss tangent 0.0009 and with a thickness of 0.508mm. Multiple element array effects have been studied and analyzed using Ansoft...
Multi-beam antennas can be used for sectorization of 360° azimuthal coverage or diversity and MIMO concepts. One of the suitable realizations, where four monopoles antennas are placed at the corner of a square, is known as monopole four square array antenna to scan the beam in azimuth. In this paper a decoupling and matching network is presented to compensate for mutual coupling between array elements...
In this study, a planar 4×4 phased array including modified E-shaped radiation elements is designed and fabricated to be incorporated in a Relay Station (RS) for realizing the communication with the super-ordinate Base Station. The proposed array provides 12.4% bandwidth at the 3.5GHz frequency band and gain of 21.2dB. Moreover a beamforming module is designed and simulated, aimed to be connected...
In this paper, through improving the coupling feeding type method, a new type of feeding that probe tangent to the patch is proposed. This tangent structure introduces the capacitance to the probe which has the inherent sensitivity and offsets the inherent sensitivity of the probe. In addition, this tangent structure generates three similar frequency resonance points, which lead to the antenna element's...
The design and implementation of a broadband single-layer low cost reflectarray is studied in this paper. The element in the reflectarray provides a nearly 360° linear phase range and have rebirth capability. The reflectarray is fed by a printed microstrip log-periodic dipole antenna. Using a sub-wavelength arrangement of element enables the reflectarray to achieve broadband characteristic. Then,...
This paper presents a microwave resonator in a simple microstrip configuration with a multi-walled aligned carbon nanotube array between two transmission lines to produce a resonator at 8.8 GHz. This type of resonator is a key element for nano electromechanical switches (NEMS), which can be applied to many telecommunications systems and also biomedical engineering.
This work presents an investigation on the parameters of microstrip patch antennas with metamaterial inspired substrates and superstrates. The metamaterial inspired behavior is obtained using split-ring resonators printed on dielectric substrates and complementary split-ring resonators perforated in thin metallic surfaces (such as ground planes). The effect of these metamaterial structures on the...
In this paper, a Ka-band dual-polarized microstrip antenna is designed with an “hour glass” shaped aperture. The antenna uses a multi-layer dielectric, and the medium is Teflon. For the dual polarization ports, the isolation between the horizontal and vertical ports of the antenna unit is better than 50dB. The cross isolations of horizontal polarization and vertical polarization are both better than...
In this paper, a U-slot rectangular microstrip patch antenna is designed in order to overcome the narrowband characteristic and gain broader band. The antenna has dual-band characteristics, so it has wider operating bandwidth. The antenna works at Ku-band and the center frequency is 16GHz. The characteristics are analyzed and optimized with Ansoft HFSS, the simulation results show that the absolute...
A Microstrip-fed quasi-Yagi phased array antenna at Ka-band is designed. This linear antenna array is constituted by 8 microstrip patch unit based on low-temperature co-fired-ceramic (LTCC) substrate(FerroA6M), it has several advantages, e.g., strong direction, broad bandwidth, easy-integration with LTCC circuit systems. 3D EM simulator was utilized to analyse the simulation of the antenna array....
The traditional satellite ground communication system is generally of parabolic antenna in most cases, but this kind of antenna has the disadvantages of poor flexibility and large volume; while microarray antenna has the shortcomings of large loss and small gain. In this paper, a novel waveguide horn antenna is designed. The radiation layer was is conductor with a octagonal hole in the center, the...
A K band Dual-Polarized monopulse microstrip patch antenna array has been designed. The 4*4 retangular patchs and the cross shaped sum-difference network both are optimized by CST.Each polarized antenna array, sum-difference and the feed network are placed on the same layer respectively, which makes this antenna array smaller and compacter. H-shaped apertures are used to promote port-to-port isolation...
In order to realize polarization and aperture reconfiguration, an array based on dual-polarization multilayer micro-strip patch antenna is presented. Several polarization reconfigurable techniques and their properties are described. The dual-polarization antenna is introduced for its orthogonal polarization basis and geometry characteristic. It can accomplish several polarization measurement modes...
In this paper, the method for formatting sequential rotation subarray and the far field function are studied. Simulate a formatting sequential rotation subarray with four microstip antenna subarrays at 93GHz. The impendance bandwith determined from a 1.5 VSWR is 3.3GHz. The gain was approximately 24dB, and null depth is over 40dB.
The design of a high Gain microstrip patch antenna array using microstrip line feed is presented in this paper. The design has been done for C band application at 5.81GHz for Rainfall RADAR also called as Precipitation Occurrence Sensor System (POSS). Array consisting of 16 elements of 4×4 were designed and simulated using HFSS v13 on Taconic TLY substrate of dielectric constant 2.2 and height of...
In this paper a flush-mounted circumferential microstrip array, designed as a sounding rocket telemetry antenna, is reported. The purpose is to comply with the requirements of an international competition for engineering students. Experimental results validate the design approach.
High efficiency microstrip patch antenna elements developed in the framework of a green radio technology European Union research project are presented. Wide band aperture-coupled stacked-patch configurations with foam substrates are used. The cheap and low losses low dielectric constant foam substrate used leads to a high efficiency and wide bandwidth printed antenna solution. The good agreement between...
This paper presents a pattern synthesis technique for circularly-polarized spherical microstrip antenna arrays. It is based on the iterative solution of constrained least squares problems and takes into account the radiation pattern of each array element, including the mutual coupling among them, what increases its accuracy. The far electric field radiated by each array element is represented by interpolation...
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