A resistive dipole antenna excited by an impulse generator for ultra-wideband radar applications

2010 ◽  
Author(s):  
Jihoon Kim ◽  
Woong Kang ◽  
Kangwook Kim
Keyword(s):  
Dipole Antenna ◽  
Ultra Wideband ◽  
Impulse Generator ◽  
Radar Applications ◽  
Wideband Radar

Improved Characteristics of Antipodal Vivaldi Antenna for UWBRADAR Applications

2019 ◽  
Vol 9 (2) ◽  
pp. 287-294
Author(s):  
Djalal Ziani Kerarti ◽  
Fatima Zahra Marouf
Keyword(s):  
Return Loss ◽  
Impedance Matching ◽  
Ultra Wideband ◽  
Simple Design ◽  
Compact Dimension ◽  
Radar Applications ◽  
Flat Gain ◽  
Vivaldi Antenna ◽  
Wideband Radar ◽  
Improved Characteristics

Background & Objective: In this paper, a simple design of antipodal Vivaldi antenna for ultra-wideband Radar applications is presented. Methods: The antenna provided to operate across the entire UWB spectrum sins it covers a very wide frequency band from 2.43 up to 13 GHz with better return loss characteristics. In addition, the antenna offers high and flat gain in this band. The numerical designs of the antennas have been performed by using the commercially available software CST MW, which it’s printed on Taconic substrate with a dielectric constant of 4.5 and thickness 1.6 mm. Results and Conclusion: The antenna has a compact dimension of 40 × 50 mm2 achieve satisfactory impedance matching and radiation efficiency.

Ultra‐compact end‐loaded planar dipole antenna for ultra‐wideband radar and communication applications

2014 ◽  
Vol 50 (21) ◽  
pp. 1495-1496 ◽  
Author(s):  
Shahin Shadrokh ◽  
Yi‐Qiang Yu ◽  
Farid Jolani ◽  
Zhizhang Chen
Keyword(s):  
Dipole Antenna ◽  
Ultra Wideband ◽  
Wideband Radar

scholarly journals A Novel Subnanosecond Monocycle Pulse Generator for UWB Radar Applications

2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
Xinfan Xia ◽  
Lihua Liu ◽  
Shengbo Ye ◽  
Hongfei Guan ◽  
Guangyou Fang
Keyword(s):  
Pulse Generator ◽  
High Amplitude ◽  
Ultra Wideband ◽  
Detection Range ◽  
Measurement Results ◽  
Drive Pulse ◽  
Radar Applications ◽  
Drive Circuit ◽  
Linear Power Amplifier ◽  
Wideband Radar

A novel ultra-wideband (UWB) monocycle pulse generator with good performance is designed and demonstrated in this paper. It contains a power supply circuit, a pulse drive circuit, a unique pulse forming circuit, and a novel monopolar-to-monocycle pulse transition circuit. The drive circuit employs wideband bipolar junction transistors (BJTs) and linear power amplifier transistor to produce a high amplitude drive pulse, and the pulse forming circuit uses the transition characteristics of step recovery diode (SRD) effectively to produce a negative narrow pulse. At last, the monocycle pulse forming circuit utilizes a novel inductanceLshort-circuited stub to generate the monocycle pulse directly. Measurement results show that the waveform of the generated monocycle pulses is over 76 V in peak-to-peak amplitude and 3.2 ns in pulse full-width. These characteristics of the monocycle pulse are advantageous for obtaining long detection range and high resolution, when it is applied to ultra-wideband radar applications.

scholarly journals Ultra-wideband Radar for Angiography

2020 ◽  
Vol 745 ◽  
pp. 012086
Author(s):  
Abdulhameed Habeeb Alghanimi ◽  
Rashid Ali Fayadh
Keyword(s):  
Ultra Wideband ◽  
Wideband Radar
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