A Novel Broadband Double Whip Antenna for Very High Frequency

Wang, Hengfeng; Liu, Chao; Wu, Huaning; Xie, and Xu

doi:10.2528/pierc19101701

Cited by 5 publications

(4 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is a widely used horizontal plane omnidirectional antenna. It is usually fed between the bottom of the antenna and the ground [6] . It is one of the antennas equipped on maritime unmanned boats and ships.…”

Section: Antenna Structurementioning

confidence: 99%

Analysis of Radiation Characteristics of Compressed V-shape Dipole Antenna

Xiu

Feng

2022

Preprint

View full text Add to dashboard Cite

In order to solve the problem of blind radiation spot of the traditional whip antenna mounted on the surface unmanned boats, a compressed V-shape dipole antenna is designed, which is omnidirectional and has a larger directivity especially when the hull is tilted. Calculated the radiation field strength of the compressed V-shape dipole antenna when it is tilted in various directions; The electrical characteristics of the compressed V-shape dipole antenna were obtained using FEKO electromagnetic simulation software, and the far-field experimental measurement and comparison experiment with the traditional whip antenna and the standard V-shape dipole antenna were carried out. Theoretical calculations, simulations, and experiments all show that the compressed V-shape dipole antenna has better directivity when interfered by the flowing sea surface, and the results are consistent, avoiding the problem of blind working spots, and the radiation process is stable and reliable.

show abstract

Section: Antenna Structurementioning

confidence: 99%

Analysis of Radiation Characteristics of Compressed V-shape Dipole Antenna

Xiu

Feng

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…GOA is used to improve the gain of the antenna on the premise that VSWR is <3 as much as possible by optimizing the loading and broadband matching network of the antenna. For the loading network, the objective function of the optimization is to minimize the maximum VSWR and maximize the minimum gain of each sampling frequency point [27, 28]. where G ( ω i ) is the gain of antenna at i -th frequency point ω i ( i = 1, 2, …, n ), G 0 is rated gain, which is an adjusting parameter to weigh the broadband impedance characteristics and gain characteristics of antenna.…”

Section: Antenna Optimizationmentioning

confidence: 99%

Section: G(mentioning

confidence: 99%

Switchable design of a frequency reconfigurable broadband whip antenna in high frequency

Wang

Liu

2020

Int. J. Microw. Wireless Technol.

Self Cite

View full text Add to dashboard Cite

In this paper, the antenna reconfigurable technology is used to redesign a whip antenna in different sub-bands of high frequency (HF). According to the electrical characteristics of the antenna, on the one hand, two different radiation whip heights are designed to solve the problem of pattern up-warping in the high-frequency band; on the other hand, a common upper loading network and several different adjusting inductors and matching networks are designed for each sub-band to achieve high gain and efficiency when keeping good voltage standing wave ratio (VSWR) characteristics. Five sub-bands of the 10-m HF whip antenna are reconfigured through the actual selection of radiation height, adjusting inductance, and matching network by radio frequency (RF) switch. The antenna load and matching network are optimized by grasshopper optimization algorithm (GOA), and integrated into the antenna body by using the printed circuit technology. The scaled prototype of 1 m frequency reconfigurable antenna is manufactured and tested, which shows that the VSWR is all <3 with an average value of 2.14; the gain is all >−2.5 dB with an average value of 3.90 dB; the efficiency is all >18.2% with an average value of 71.59%, and the patterns all keep horizontal omnidirectional without the phenomenon of up-warping.

show abstract

“…In order to calculate the input impedance of the whip antenna when it rises above the surface of the water and determine the radiation power radiated to the external field, the impedance of the antenna on the sea surface needs to be considered. Combining the phase wavelengths of the voltage and current waves propagating on the transmission line in the seawater medium, find the equivalent circuits corresponding to the two parts [6][7][8][9]. In this way, the input impedance of the feeding point is obtained; the maximum radiated power is calculated; the corresponding optimal working frequency is found; and the accuracy of the calculation results is further proved through simulation software and physical experiments [10].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Uuv Whip Antenna Radiated Power and Optimal Working Frequency in Seawater Environment

Xiu¹,

Li²,

Feng³

et al. 2022

PIER C

View full text Add to dashboard Cite

In order to analyze the working status of the underwater unmanned vehicle not fully surfaced, the optimal working frequency when the whip antenna radiates the maximum power is given. The input impedance of the antenna on the water is theoretically calculated. It is regarded as the load of the underwater part of the antenna, and the total input impedance of the whip antenna is obtained. The relationship between the antenna radiated power to the external field and the input power is analyzed, and the optimal operating frequency corresponding to the maximum radiated power is determined. Using simulation experiments and actual measurements, the radiated power of the 1 m whip antenna when being immersed in seawater at 0.25 m, 0.5 m, 0.75 m is obtained, and the corresponding optimal working frequency is calculated, which are in good agreement with the theoretical deduction results. The results show that as the depth of the antenna immersed in seawater increases, the power radiated from the antenna to the external field decreases, and the optimal working frequency increases accordingly.

show abstract

A Novel Broadband Double Whip Antenna for Very High Frequency

Cited by 5 publications

References 14 publications

Analysis of Radiation Characteristics of Compressed V-shape Dipole Antenna

Analysis of Radiation Characteristics of Compressed V-shape Dipole Antenna

Switchable design of a frequency reconfigurable broadband whip antenna in high frequency

Analysis of Uuv Whip Antenna Radiated Power and Optimal Working Frequency in Seawater Environment

Contact Info

Product

Resources

About