Broadband Sleeve Dipole Antenna with Consistent Gain in the Horizontal Direction

Fukushima, Takatsugu; Michishita, Naobumi; Morishita, Hisashi; Fujimoto, Naoya

doi:10.1587/transcom.2017ebp3326

Cited by 5 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The size of this antenna is about 0.35 λ × 0.075 λ . In another study, the bandwidth of 123.1% has been obtained with the dimension of 0.35 λ × 0.07 λ and the same VSWR by using a sleeve dipole antenna with a tuneable plate element at the end of that [2]. In addition, several other investigations are available dealing with the usage of the printed structures for designing the sleeve wideband antennas [3–11].…”

Section: Introductionmentioning

confidence: 99%

A new compact and wideband CPW-fed sleeve antenna

Hasani

Hashemi

Ghalibafan

2020

Int. J. Microw. Wireless Technol.

View full text Add to dashboard Cite

In this article, a sleeve antenna with a wide impedance bandwidth that consists of a coplanar waveguide line connected to a metallic cylinder is presented. The effect of design parameters on the impedance bandwidth is considered by some simulations. In addition to the wide impedance bandwidth, the omnidirectional pattern, high efficiency, low cost and easy fabrication process, and compact dimensions cause this antenna to be a good choice for some applications at low VHF/UHF frequency bands. Due to the flexible structure of this antenna, it is possible to cover the various frequency bands by changing the parameters of the antenna. In this work a typical model of the proposed antenna for the frequency range of 127 to 586 MHz is fabricated and compared with other previous works. An equivalent circuit model has been proposed to better understand how the antenna works. The proposed antenna has a bandwidth of about 128.7% for a voltage standing wave ratio (VSWR) of less than 3, compact size of 0.274λ × 0.047λ and higher than 90% efficiency.

show abstract

Section: Introductionmentioning

confidence: 99%

A new compact and wideband CPW-fed sleeve antenna

Hasani

Hashemi

Ghalibafan

2020

Int. J. Microw. Wireless Technol.

View full text Add to dashboard Cite

show abstract

“…Jiang et al presented a sleeve dipole with three sleeves to cover 800-2500 MHz with VSWR ≤ 2 : 1 giving a bandwidth ratio of 3.125 : 1 [12]. A broadband sleeve dipole was designed covering frequency range of 1000-3000 MHz [13]. Sairam et al presented a compact broadband omnidirectional antenna using canonical structures and single sleeve configuration in 500-3000 MHz range [14].…”

Section: Introductionmentioning

confidence: 99%

Design of Broadband Compact Canonical Tetra Sleeve Cage Antenna Covering Uhf Band

Sairam¹,

Vakula²,

Chakravarthy³

2019

PIER Letters

View full text Add to dashboard Cite

In this paper, design of a novel broadband Canonical Tetra Sleeve Cage Antenna is presented. This antenna is designed using distributed antenna matching techniques. It has canonical shaped antenna elements and coaxial sleeves. The designed antenna operates over a wide frequency range in UHF band with omnidirectional characteristics. The proposed antenna is simulated in CST Microwave Studio, fabricated, evaluated, and the results are presented. The simulated and measurement results are in agreement. It has VSWR < 1.9 : 1 in frequency bands 270-330 MHz and 930-1670 MHz. The maximum value of VSWR in 250-1850 MHz is 3.3 : 1. The measured gain of the antenna varies from 0.6 to 5.5 dBi in the frequency range of 250 MHz to 1850 MHz. The implementation of distributed matching techniques by using canonical shaped antenna elements and tetra sleeves results in reduction of the length of the antenna by 59.86% compared to the length of a half wave dipole antenna designed at the lowest frequency. The proposed antenna finds applications in defence and wireless communication systems as a transceiver antenna.

show abstract