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A compact, high gain printed dipole antenna is proposed for GPS application. As modern wireless devices have become more portable and cost effective, they have become an integral part of the day to day life of civilized society. A single element printed dipole antenna at 1.575GHz is designed and developed using FR4_Epoxy substrate. Its subsequent development into two elements and four elements array...
The resonance characteristics of cross-dipole planar antennas are analyzed by using Theory of Characteristic Modes (TCM) in this paper. The resonant frequency, bandwidth, current distribution and other characteristics of the antenna are compared here. Unlike the traditional analysis methods, the mode decomposition is proposed here. It considering the radiating structure as a whole, seek the support...
This paper presents a design example of a low-profile UWB dual-polarization array antenna design based on tightly-coupled dipole elements. This supports array can support beam steering for more than 60° beam steering in both E- and H-plane with more than 2.5:1 impedance bandwidth, from 0.55 fc to 1.45fc where fc is the center frequency. An 18×18 array prototype was fabricated and measured to validate...
Selection of a suitable antenna type for a particular application has significance importance in meeting the desired system objectives. This paper investigates various antennas of different types for their suitability as a basic radiating element for a Phased Array application. This comparative study takes into account the radiation characteristics, gain, feeding mechanism, polarization, bandwidth...
We present a 2 × 2 element array based on circularly polarized (CP) metasurface-based antennas fed by a sequential phase network. The single element consists of a microstrip-line-fed slot antenna coupled to a metasurface having 4 × 4 truncated corner square patches. The proposed array, with an overall size of 50 mm × 50 mm × 2.032 mm, resulted in an impedance bandwidth of 7.5 – 11.0 GHz (37.84%) for...
In this paper microstrip antenna with different defected ground structures are compared on the basis of their bandwidth, gain and radiation properties. It is observed that these antennas can operate in ultra wide band frequency range with different notches. Comparison of these antenna structures reveals that these antennas show multiple band operation with different number of pass bands and bandwidths...
As fast development in communication field, sub-6 GHz spectrum band becomes ultra crowd. Even though Carrier Aggregation (CA) and higher order modulation used, available spectrum is still the bottleneck of communication speed and network latency. Nowadays, more and more companies and institutes are paying more attention to over 6GHz communication system research. Recently released news indicate frequency...
A dual-broadband 2G/3G/LTE (4G) array antenna is proposed in the paper. The prototype of the antenna is composed of a lower-band (dipole) and an upper-band radiation unit (a pair of two folded dipole). Four lower-bands and six upper-band units are interleaved to array on H-plane for roof mounting on car top, depending on the gain and coverage tradeoffs. In terms of the criterion of S11 less than −10dB,...
With the advent of recent trends like Internet Of Things(IOT) and Tera Hertz communication networks, design of hardware operable for short range communications with less power has become vital. As most of the such technologies employ wireless communication, antennas are to be designed accordingly. So, an antenna array which operates at 2.4 GHz and is useful to detect signals in ISM band is proposed...
This paper presents a design and analysis of 4-element MIMO antenna. The proposed MIMO antenna consists of four planar folded dipole antenna elements. This MIMO antenna operates at frequency 2300–2400 MHz (band 40). It is a squared-compact size of 189 × 189 mm2. This work investigates a partial groundplane and a full groundplane to obtain an optimal design. The simulation results show that partial...
The radiation characteristics of a dipole antenna when immersed in both fresh and seawater are assessed through simulation and experimental work. Simulations show that the antenna's bandwidth and radiation pattern change with the properties of the medium where it is placed, namely the conductivity of the medium. Two dipoles antennas with current baluns were built and tested experimentally in freshwater...
This paper presents the design of tri-band planar dipole antenna for PCS and WLAN services. A modification is made in the previously presented dipole antenna design [1]. The configuration of the proposed dipole antenna is given in Figure 1(a). The antenna design consists of a printed dipole and two parasitic elements which are behaving as resonators by coupling from the driving element. The proposed...
In this paper, a compact dual-polarized printed dipole antenna with wide band is proposed. This design employs two techniques to improve its performances. Exponential curve lines are employed to improve the impedance matching. Horizontal slots are used to miniaturize the surface area of this antenna. The dimension of this single polarization antenna is 63mm × 47 mm. The dual-polarized printed dipole...
In this manuscript, a novel design of millimeter-wave (mm-Wave) dipole phased array antenna for the fifth generation (5G) handset applications is proposed. The proposed antenna is designed to cover some of the candidate bands for 5G communications from 24 to 50 GHz, and has dimension of 8×5.5mm2. The antenna exhibits small and wide bandwidth. The beam steering characteristics in the operation band...
Advanced wireless communication applications demands antennas with enhanced radiation properties over a wide bandwidth. Log Periodic Dipole Antenna array (LPDA) is a new class of antennas that provide constant radiation properties over a wide bandwidth. In this paper, modified planar log periodic antennas are proposed which assure an enhanced gain of 15 dBi at 2.45 GHz. Two designs of LPDA are analysed...
In this paper, sierpinski-shaped dipoles are introduced in a printed log-periodic dipole antenna design. A Log Periodic Sierpinski Antenna (LPSA) is developed and the characteristics studied. Antenna size is considerably reduced, still maintaining the overall performance characteristics. The results are compared with that of a standard printed LPDA. A set of shapes of LPSA are studied and the observations...
Currently, the needs of communication system with a wide bandwidth is large enough. One antenna that can be used to realize communication with a wide bandwidth is log periodic antenna. To observe the effect of element length, the distance between elements, and the width of dipole elements used in log periodic antenna then do research to design and realize the antenna log periodic dipole array (LPDA)...
In this paper the reconfigurable dual band micro strip patch antenna with resonant frequencies 1102MHz and 912MHz is analyzed with the change in position of internal two switches which are connecting the four antenna patches. It is showed that reconfigurable antenna changes the basic parameters with the change in the position of the switches which are being used to connect the antenna structure. A...
Flower shaped antenna along with a rectangular resonator is reported in this paper for THz applications. The dimension of antenna is 20 × 30×1.6 mm3. FR4 material is used as substrate. Return loss, radiation pattern and gain of the antenna are presented and analyzed to study the performance of the antenna for THz applications. The frequency band is obtained at 0.92 THz with the impedance bandwidth...
In this paper, a single-feed arrow-shaped circularly polarized (CP) antenna is presented for GNSS application. Two orthogonally placed dipoles connected by phase delay lines are printed on both sides of a substrate to realize circular polarization. Further, an unbalanced slotted artificial magnetic conductor (AMC) is proposed to reduce profile of the antenna, enhance impedance bandwidth and CP bandwidth...
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