Multiple frequency notched planar monopole antenna for multi-band wireless systems

Lee, W.S.; Kim, D.Z.; Kim, K.J.; Son, Kyungjune; Lim, Won‐Gyu; Yu, Jong‐Won

doi:10.1109/eumc.2005.1610344

Cited by 11 publications

(9 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The proposed antenna [6] has two folded-strip lines to get the band-notch function. Many frequency-notched UWB antennas have been developed by inserting a V-shape [7], U-shape slot [8][9] on the patch. The split ring resonator (SRR) is used in the design of double notch frequency bands UWB antenna [10].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A novel dual frequency notched UWB antenna with dual L-shape slots

Qin

2010

2010 International Symposium on Signals, Systems and Electronics

View full text Add to dashboard Cite

A planar UWB monopole antenna with double notch frequency bands is presented. The proposed antenna consists of a planar monopole antenna and two L-shape slots which are used to generate two notch frequency bands. The bandwidth of the antenna is from 2.5 to 10.75GHz, while the proposed antenna has two notch bands of 3.35-3.75GHz and 4.85-6.1GHz, which cover 3.5GHz WIMAX band from 3.4GHz to 3.69GHz and 5.5 GHz WLAN band from 5.15GHz to 5.825GHz, respectively .The parameters determining the antenna's band notched characteristic are discussed.

show abstract

Section: Introductionmentioning

confidence: 99%

“…However, most of the antennas [2][3][4][5][6][7][8] were designed to generate only one notch frequency band so that just one narrow band of disturbance can be eliminated. What's more, some antennas with dual notch frequency bands [9][10] are so complicated that they are not easily produced.…”

Section: Introductionmentioning

confidence: 99%

A novel dual frequency notched UWB antenna with dual L-shape slots

Qin

2010

2010 International Symposium on Signals, Systems and Electronics

View full text Add to dashboard Cite

show abstract

“…② Using the calculated μ r value, the linear slope angles of tm and rm can be calculated using approximation equation (2) and this can be used to find the relationship between t m and r m using equation (1). ③ One can design a broad bandwidth antenna that has a CMM feeding structure through calculation using the electromagnetic numerical analysis method or the commercial calculation tool for applying the parameters of μr, tm and rm derived by the proposed approximation equations.…”

Section: ⅲ Error Extent Calculation Between Numericalmentioning

confidence: 99%

“…Generally, a multi-band antenna uses a narrow bandwidth element and design is difficult because of sensitive impedance bandwidth and a complex structure [1]. However, when a broad bandwidth antenna is used, there are advantages such as good impedance matching, stable radiation pattern and high efficiency [2]. Antenna types with such broad bandwidth characteristics include the planer monopole antenna, slot antenna, planer oval antenna, PIFA and MDM (Magneto-Dielectric Material).…”

Section: ⅰ Introductionmentioning

confidence: 99%

Approximation Equation for Broad Bandwidth Antenna Design Using CMMS

Min

Lee²

2010

Journal of electromagnetic engineering and science

View full text Add to dashboard Cite

This paper proposes an approximate equation for broad bandwidth conditions in an antenna feeding probe design with a cylindrical magneto material structure (CMMS). The bandwidth calculation has been conducted according to the relation between the distance (rm) between the magneto material and feeding probe, and the magneto material thickness (tm) for a given μr. The bandwidth of a proposed antenna with CMM feeding structure is improved about 182 %, when μr=20+j0.001, in comparison with the bandwidth of an antenna without CMMS. The maximum error extent between the bandwidth calculated by the approximation equation and by the numerical calculation of the proposed antenna is about ±3.2 % for μr=10+j0.001. The approximation equation proposed in this study can solve the conventional problem of the complex process and the long time required for reiterative calculation, and allow simple and precise design with prediction. Ⅰ. IntroductionWith the recent development of a variety of wireless communication services, the need to include various wireless services in single wireless handheld devices is increasingly stressed [1]. Many antennas with different frequencies and bandwidths are included in a handy terminal to simultaneously provide a variety of wireless communication services. However, this method causes the antenna to take up too much space in the device, and there is the added disadvantage that input impedance matching between the antennas and the RF circuits needs. In order to overcome this disadvantage, a single antenna that can simultaneously catch the frequencies of different bandwidths including multi-band antenna, reconfigurable antenna and broad bandwidth antenna, are currently used. Generally, a multi-band antenna uses a narrow bandwidth element and design is difficult because of sensitive impedance bandwidth and a complex structure [1]. However, when a broad bandwidth antenna is used, there are advantages such as good impedance matching, stable radiation pattern and high efficiency [2]. Antenna types with such broad bandwidth characteristics include the planer monopole antenna, slot antenna, planer oval antenna, PIFA and MDM (Magneto-Dielectric Material). There are many design methods, also. These methods include controlling antenna impedance to match the operating band by changing the antenna structure [3～5], controlling bandwidth with multi-resonance by changing the addition shorting stub or via hole [6,7], and using dielectric material and magneto material to control the guide wavelength within the dielectric material to ultimately control operation frequency and bandwidth.In order to reduce the calculation time and to verify accuracy for the model antenna of the reference [8], the approximation equation for the CMM (Cylindrical Magneto Material) feeding structure of the reference [8] has been conducted. The method to control guide wavelength was also considered and applied in this research. The proposed approximation equation is one that can predict conditions of the broad bandwidth according...

show abstract

“…On the other hand, microstrip antennas have been attached great attention due to their many attractive advantages, such as simple design, light weight, low cost and high reliability. For this application, there are some methods used in microstrip antennas area to achieve the multiband characteristic, for example, multi-radiation elements [5,6] and gap loading [7,8].…”

Section: Introductionmentioning

confidence: 99%

Miniaturized Modified Dipoles Antenna for Wlan Applications

Guo¹,

Zhang²,

Ning³

et al. 2011

PIER Letters

View full text Add to dashboard Cite

Abstract-In this paper, a novel double-band integrated antenna for applications in WLAN is presented and studied. Based on the mature dipole theory, radiation elements are printed on the two faces of a low cost FR4 substrate. The two dipoles are designed on the sides of the feedline, which can reduce the impact of each other availably. The distance between the two arms and the width of the arms plays an important role in improving the impedance matching. Furthermore, by folding the arms efficiently, the current distribution of the proposed antenna is extended, and the dimensions of the proposed antenna can be reduced. The size of the designed antenna is just 34 mm × 24 mm × 1 mm (about 0.27λ × 0.19λ × 0.008λ, λ is the wavelength relative to the frequency 2.4 GHz). Moreover, the prototype of the antenna is constructed and tested, which shows a good agreement with simulated result. The measured bandwidths, ranging from 2.35 GHz to 2.61 GHz and from 4.7 GHz to 6.0 GHz respectively, are obtained with return loss less than −9.54 dB (about 2 : 1 VSWR). The proposed antenna covers 2.4/5 GHz WLAN bands, and radiation patterns with good omni-directional radiation in the operating frequency are observed.

show abstract

Multiple frequency notched planar monopole antenna for multi-band wireless systems

Cited by 11 publications

References 8 publications

A novel dual frequency notched UWB antenna with dual L-shape slots

A novel dual frequency notched UWB antenna with dual L-shape slots

Approximation Equation for Broad Bandwidth Antenna Design Using CMMS

Miniaturized Modified Dipoles Antenna for Wlan Applications

Contact Info

Product

Resources

About