ultra-wide band techniques
Design Of Compact Ultra Wide Band (Uwb) Antenna Using Different Feeding Methods For Various Wireless Applications
... for wide band antennas to satisfy high gain and large bandwidth covering all frequency ranges for these ...proposed ultra wide band antenna is going to be designed by introducing ...
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Wireless Ultra-Wide Band Transmission of (Bio)Signals
... transmission techniques that employ the impulse radio Ultra-Wide-Band, localized around 3 to 5GHz, for transmitting and receiving signals by very reduced temporal pulses, resulting in very ...
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Study of Different Techniques to Design Ultra Wideband AntennaAmandeep Bath, Abhishek Thakur, Jitender Sharma, Prof. Basudeo Prasad
... dual band operation but also needs to have an appropriate proposed ...two techniques to improve the radiation pattern. These techniques are the use of an angled dipole and vertical copper plates ...
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A Review Paper Based on Various Bandwidth Enhancements Techniques for Ultra Wide Band Antennas
... for Ultra-wideband wireless communication , UWB is rapidly advancing as a high data rates wireless communication technology and the micro strip antenna are often realized with bandwidth of the order of 1% to 5% ...
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Slot Cut Ultra Wide Band Antennas
... The ultra wide band antennas are required in applications where larger bandwidth for the transmitting signal is ...cover wide bandwidth in the range from 500 MHz to the frequencies above 8000 ...
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Design and Fabrication of Ultra Wide Band Antenna with Band Notching Property : A Review
... the Ultra Wide Band (UWB) fed rectangular patch antenna with DGS (Defected Ground Structure) is designed with the micostrip feeding ...desired band notching and performance comparison is made ...
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A Compact Coplanar Broadband Rectangular Slot Antenna with E-Shaped Feeding Structure for GPR Applications
... many techniques have been suggested for achieving a high bandwidth such as using more complex shapes, parasitic elements, multilayer configurations and the tuning of the feed line ...frequency band of ...
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Circuits and Active Antennas for Ultra-Wide Band Pulse Generation and Transmission
... UWB signals have been usually generated using two techniques. One is to generate a narrow pulse using a differentiator-type circuit, and then modify the shape by filters [12] or an up-converter [13] to fit the FCC ...
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TEM Horn Antenna for Ultra-Wide Band Microwave Breast Imaging
... pulse. In tomographic techniques,the frequency-hopping approach is used which employs multi-frequency microwave measurements. It allows for the reconstruction of the permittivity distribution with higher fidelity ...
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Antenna Design for Ultra Wide Band Communications and Frequency Selective Surfaces
... narrow band and typically operate around a center fre- ...domain techniques. Since a very narrow band is considered, a sine or a cosine signal remains essentially unchanged in shape at different ...
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Design of Integrated Triple Band Notched for Ultra Wide Band Microstrip Antenna
... Some techniques are used to reject undesired frequencies, for examples, placing the parasitic strips on the opposite side of the radiating element [7], inserting two strips in the printed slot antenna to create ...
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Analysis of Wide Band Scattering from Objects Using the Adaptive Improved Ultra-Wide Band Characteristic Basis Functions
... a wide frequency band using MoM, the calculation at each frequency point has to be repeated over the band of interest which increases computational ...several techniques have been proposed to ...
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Solution for Wide Band Scattering Problems by Using the Improved Ultra-Wide Band Characteristic Basis Function Method
... a wide frequency band is of interest, the MoM is computationally ...several techniques have been proposed to alleviate this ...two techniques must resort to iterative methods, which can cause ...
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Design and Analysis of Ultra Wide Band log-periodic Planar Dielectric Antenna in Wireless Communications
... Experimentally measured return loss plot against frequency is shown in Figure 5.2. It shows that the minimum return loss of about –10.92 dB occurs at 10.885 GHz. In addition, it maintains ultra wide ...
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Applications of UWB Technology
... Finite-difference time-domain (FDTD) is used to model UWB prorogation around the human body where the path loss depends on the distance and increases with a large fading vari-ance. The narrowband implementation is ...
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A Circular Fractal UWB Antenna Based on Descartes Circle Theorem with Band Rejection Capability
... The antenna provides VSWR < 2 over the frequency band of 1.8 GHz to 10.6 GHz and provides a suitable rejection at 5.5 GHz, where as wideband behavior of the antenna is maintained. Thus the antenna possesses ...
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The Ultra Wide Band Radar System Parameters in Medical Application
... There have been growing interests in recent years’ re- search the Ultra Wide Band (UWB) technology and radar system. The radar is built in a wide variety and for a large number of different ...
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A Planar Eye Shape Antenna for Ultra-Wide Band Applications
... Figure 5 shows the simulated magnitude of the antenna transfer function in a two-antenna configuration. In this case the two antennas are separated by 60 cm in face to face (T-T), face to side (T-S), and side to side ...
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Analysis and Design of a Compact Multi-Layer Ultra Wide Band Filter
... odd mode impedances of coupled line section respectively. Using differential (positive and negative ports) and common mode (positive ports) excitation features of IE3D [13], even and odd mode impedances of the three ...
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Hexagonal Fractal Geometry Antenna Using Ultra Wide Band Applications
... The 3rd iteration frequency bands have improved here. However, it is lower than the previous iteration. Fractional bandwidth is the measure of value of the ultra-wide band of the antenna. The high ...
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