A study on an improvement of folded bow-tie antenna by adding aditional elements

Nagatoshi, Mio; Morishita, H.; Tanaka, Shingo

doi:10.1109/aps.2011.5996790

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…Reference [8] proposes a miniaturized bow tie antenna for wideband applications. The length of a bow-tie antenna is generally λ/2 of the lowest operating frequency.…”

Section: Antenna Miniaturization Techniquesmentioning

confidence: 99%

Miniaturization of Dipole Antenna for Low Frequency Ground Penetrating Radar

Howlader¹,

Sattar²

2016

PIER C

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Abstract-In this paper, a miniaturized dipole antenna operating at 100 MHz frequency for Ground Penetrating Radar (GPR) application is presented. A conventional dipole antenna length is half of its lowest operating frequency wavelength. As low frequency GPR system is vital for high depth penetration, the size of the antenna used reduces its easy handling and portability. Therefore, the technique of miniaturizing a dipole antenna by adding extra radiating arms is presented here. The antenna design and analysis is carried out using Advanced Design System (ADS) and FEKO simulation software, and a network analyser is used to validate the prototype antenna performance. The antenna of 66.5 × 22 cm dimension, fabricated on an FR4 substrate exhibits a frequency resonance at 104 MHz with 8 MHz of −10 dB bandwidth. The proposed antenna radiates in omnidirectional pattern and features 55% reduction in length compared to a conventional dipole antenna of same frequency operation.

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“…Reference [8] proposes a miniaturized bow tie antenna for wideband applications. The length of a bow-tie antenna is generally λ/2 of the lowest operating frequency.…”

Section: Antenna Miniaturization Techniquesmentioning

confidence: 99%

Miniaturization of Dipole Antenna for Low Frequency Ground Penetrating Radar

Howlader¹,

Sattar²

2016

PIER C

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“… 31% length reduction is recorded for 500 MHz bow-tie antenna in [3].  26% reduction is recorded for 700 MHz folded dipole antenna in [4].…”

Section: Dipole Antenna Miniaturizationmentioning

confidence: 99%

Miniaturized dipole antenna development for low frequency Ground Penetrating Radar (GPR) system

Howlader

Sattar

2016

4th Colloquium on Antennas, Wireless and Electromagnetics

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A miniaturized symmetrical dipole antenna with extra radiating arms is proposed for low frequency operation (100 MHz) in ground penetrating radar applications to achieve high depth penetration at low resolution. The dipole antenna design is of total dimension 66.5 cm × 22 cm. A parametric study of antenna performance is performed via simulation with Agilent Advanced Digital System software which indicates an optimum length of 15 cm for the extra arm with a gap of 5 cm between the dipole arm and extra arm. The results are validated experimentally in room conditions with a prototype antenna fabricated on 1.6 mm thick FRA substrate, copper layer thickness of 17 µm. The antenna operating at a centre frequency of 104 MHz and bandwidth of 8 MHz for VSWR ≤ 2 achieves a 55% reduction in length compared to a conventional dipole operating at 100 MHz while delivering typical dipole radiation pattern with directivity gain of 2.06 dBi.

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