Disk-loaded monopoles with parallel strip elements

Foltz, Heinrich; McLean, James; Crook, G. E.

doi:10.1109/8.743844

Cited by 75 publications

(32 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A number of works have appeared in the literature that presented the design or analysis of miniaturized monopole antenna using the disk top loading techniques [64][65][66]. As shown in Figure25 top loading with a capacitive disk is a way of reducing the antenna height [64], However without folding the vertical element, which allows transformation of the input impedance to compensate for the radiation resistance reduction that occurs when the size is decreased, the bandwidth will be decreased due to fundamental limitations on the antenna Q.…”

Section: Figure24: Height Reduction Via Top Loadingmentioning

confidence: 99%

See 1 more Smart Citation

Contribution to the miniaturization of antennas: State of the art

Tarbouch¹,

Elamri²,

Terchoune³

2016

TNC

View full text Add to dashboard Cite

Nowadays, communications systems have become more mobile and personal, that means materials used must be as smaller as possible. Low weight reduced volume and low cost are some of the characteristics that must be accomplished in modern telecommunication equipment. It is well known that the antenna is one of the most important devices in the radiofrequency (RF) section. This element needs to perform effectively according to the necessities. To achieve low weight, small volume and low cost, the size needs to be reduced, but keeping the main characteristics. The size reduction of antennas can be made by several techniques according to the type of the element. In this study we will present the fundamental limitations of small antennas as a major constraint of antenna miniaturization, then we will discuss major techniques that have been reported in literature to reduce the size of an antenna. Feasibility, features, effects on the miniaturisation of antennas of each technique will be presented and discussed. At the end of this study we will give some examples of real systems that used antennas miniaturization techniques.

show abstract

Section: Figure24: Height Reduction Via Top Loadingmentioning

confidence: 99%

“…In [66] as shown in Figure26 a novel 3D miniaturized RFID antenna is proposed. It consists of two vertical printed triangular monopole antenna elements.…”

Section: Figure24: Height Reduction Via Top Loadingmentioning

confidence: 99%

Contribution to the miniaturization of antennas: State of the art

Tarbouch¹,

Elamri²,

Terchoune³

2016

TNC

View full text Add to dashboard Cite

show abstract

“…Several useful techniques are used for the bandwidth enhancement of the monopolar patch antennas in [3][4][5][6][7][8][9][10][11]. The height of these antennas is about 0.1λ 0 (or even higher), which is too large for some applications such as conformal radiator.…”

Section: Introductionmentioning

confidence: 99%

Microstrip Monopolar Patch Antenna for Bandwidth Enhancement

Zhang¹,

Tang²,

Ye³

2015

PIER Letters

View full text Add to dashboard Cite

Abstract-A microstrip monopolar patch antenna with shorting vias in the circular patch and coupled ring for bandwidth enhancement is proposed. The bandwidth of the proposed antenna with shorting vias in the annular coupled ring is over 40% wider than that of the antenna without shorting vias in the annular ring. The proposed antenna provides a wide bandwidth because of four resonant modes, including the TM 01 mode of the circular patch, TM 01 mode of the coupled annular ring, TM 02 mode of the circular patch, TM 02 mode of the coupled annular ring. These modes can generate an omnidirectional pattern in the azimuth plane like a monopole antenna. A prototype was fabricated to confirm the simulation verdictions. Measured results show that 10-dB return loss bandwidth of 38.4% from 4.42 to 6.52 and average gain of 5 dBi acrossing the operating band are achieved for the proposed antenna with a low profile of 0.027 wavelength.

show abstract

“…Impedance matching can also be accomplished within the antenna structure using some techniques such as optimization of the antenna topology. These techniques include folded spherical/cylindrical helix [3,4], the disk/spherical-cap dipole [5]. These techniques are often more efficient than impedance matching the ESA using an external matching network.…”

Section: Introductionmentioning

confidence: 99%

Electrically Small Antenna Inspired by Spired Split Ring Resonator

Duan¹,

Qu²,

Yi-wei³

2009

PIER Letters

View full text Add to dashboard Cite

Abstract-A simple metamaterial resonator structure based efficiency electrically small semi-circular loop antenna (ESSCLA) is proposed. It is demonstrated numerically that capacitance offered by the simple metamaterial resonator structure can counteract the inductive impedance of the ESSCLA at the resonance frequency. The overall structures of ESSCLA can be fabricated on one dielectric substrate, and match conjugate to a 50 Ohm coaxial transmission line source without additional matching network. The size of the proposed ESSCLA is ka = 0.6745 by Chu limit. The resonance frequency is 3.2239 GHz, and impedance bandwidth (S 11 < −10) is from 3.19 GHz to 3.26 GHz about 0.07 GHz, the relative bandwidth is about 2.2%. The measure results accord with the simulation results well. The peak gain is 4.58 dB. The radiation efficiency is 97.81%, the overall efficiency is 96.71% at the resonance frequency. The proposed antenna has advantages of efficiency, high gain, low cost, small size, and light weight and will be applied to wireless communication systems for required small antennas.Corresponding author: Z. Duan (dzhangshan@126.com). 48Duan, Qu, and Hou

show abstract

Disk-loaded monopoles with parallel strip elements

Cited by 75 publications

References 7 publications

Contribution to the miniaturization of antennas: State of the art

Contribution to the miniaturization of antennas: State of the art

Microstrip Monopolar Patch Antenna for Bandwidth Enhancement

Electrically Small Antenna Inspired by Spired Split Ring Resonator

Contact Info

Product

Resources

About