Investigation of the pulse radiating performance of resistively loaded dipole antennas by manipulation of the loading parameter

Lee, Doojin

doi:10.1016/j.aeue.2018.11.003

Cited by 3 publications

(3 citation statements)

References 19 publications

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“…If the antenna is loaded according to the non-reflection profile, the efficiency of the antenna is low. However, the radiation efficiency can be improved by adjusting the loading factor and moderately sacrificing the reflection characteristics of the antenna [27]. To improve the efficiency of the monopole antenna and ensure that the feed port is easy to match, the Wu-King profile is improved.…”

Section: Design and Geometrymentioning

confidence: 99%

High Reliability UWB Monopole Antenna Using Planar Embedded Resistance for Mars Subsurface Exploration

Lü

et al. 2021

Electronics

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The Tianwen-1 of China is expected to land and explore on the planet Mars in May 2021, carrying a Mars Rover-mounted Subsurface Penetrating Radar (RoSPR) system. A VHF band ultra-wideband (UWB) monopole antenna integrated on the Mars Rover, and described in this paper, has been designed for the subsurface exploration of Mars tens of meters deep. Conventional antenna design methods usually prove difficult in taking into account several key parameters such as miniaturization, broadband characteristics and radiation efficiency. Moreover, there is almost no special research on the reliability of antennas. For this purpose, a miniaturized air-coupled monopole antenna integrated with the Mars Rover has been designed. The overall length of the antenna is 0.13 λ at the lowest operating frequency. In addition, the classical Wu–King profile is improved, which not only satisfies the operating bandwidth of the antenna, but also increases the gain by 3–4 dB. In the design, the innovative application of planar embedded resistance greatly enhances the reliability of the antenna and thereby ensures that the antenna can work on Mars for a long term. This is the first application of this antenna design method in the aerospace field. Because it is difficult to test the low-frequency antenna accurately, a 1:4 scale model of the antenna and Rover is fabricated to equivalently measure the radiation characteristics of the antenna. Furthermore, the performance and practicability of the antenna and radar system are verified on the glacier.

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Section: Design and Geometrymentioning

confidence: 99%

High Reliability UWB Monopole Antenna Using Planar Embedded Resistance for Mars Subsurface Exploration

Lü

et al. 2021

Electronics

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“…It is observed that, the lower frequency matching is much improved for the WRLBA. This is because the resistive loading makes the bandwidth broad [14, 15]. The reflection curve of the WBA repeatedly shows up and down pattern, while that of the WRLBA is shown to be more stable in the vicinity of the peak frequency where the main energy is focused.…”

Section: Numerical Investigation Of Wrapped Antennasmentioning

confidence: 99%

“…4(b). The reflected voltage in the time domain response can be computed by multiplying the transfer function by the input spectrum as follows [14, 15]: where v r ( t ) is the reflected voltage, s 11 ( f ) is the transfer function of the antenna, v in ( t ) is the excited voltage of (2), and and are the Fourier operators.…”

Section: Numerical Investigation Of Wrapped Antennasmentioning

confidence: 99%

Investigation on the effects of resistive loading on wrapped bow-tie antennas

Lee

Shaker

Melek

2019

Int. J. Microw. Wireless Technol.

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The pulse radiating characteristic of a wrapped bow-tie antenna (WBA) and wrapped resistively loaded bow-tie antenna (WRLBA) is presented for impulse radar applications in this paper. The numerical analysis of the WRLBA is performed by comparing that of the WBA. The wrapped antennas are realized on a flexible substrate. The antennas are fed by an impedance tapered balun, which has an overall transmission loss of −1.4 dB over the balun length. The characteristics of the resistive loading to the wrapped antenna, such as reflection coefficient, reflected pulse in the time domain, voltage standing wave ratio, and input impedance, are experimentally investigated and compared with simulated results. The fidelity factor of the radiated electric field on the boresight direction for the WBA and WRLBA is calculated as 0.82 and 0.96, respectively. The wireless communication ability is evaluated by the transmission coefficient, group delay, boresight gain, and received waveform. The calculated fidelity factor of the received waveform for the WBA and WRLBA is 0.79 and 0.85, respectively. The average and variations of the group delay of both wrapped antennas are observed to be around 2.5 ns and less than 1.5 ns, respectively.

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Radiation enhancement of a broadband resistively loaded dipole with an overlapping ellipses profile for impulse application

Deng¹,

Li²,

Zhao³

et al. 2023

AEU - International Journal of Electronics and Communications

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Investigation of the pulse radiating performance of resistively loaded dipole antennas by manipulation of the loading parameter

Cited by 3 publications

References 19 publications

High Reliability UWB Monopole Antenna Using Planar Embedded Resistance for Mars Subsurface Exploration

High Reliability UWB Monopole Antenna Using Planar Embedded Resistance for Mars Subsurface Exploration

Investigation on the effects of resistive loading on wrapped bow-tie antennas

Radiation enhancement of a broadband resistively loaded dipole with an overlapping ellipses profile for impulse application

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