Planar multi-band monopole antenna with L-shaped parasitic strip for WiMAX application

Lu, Jui‐Han; Huang, Bing-Jhang

doi:10.1049/el.2010.0671

Cited by 54 publications

(49 citation statements)

References 7 publications

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“…To study the antenna size reduction for the proposed C-shape monopole antenna, the comparisons of the overall antenna volumn including the ground plane for this proposed and other presented antenna designs in the literature [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] are listed in Table 4. It is seen that this proposed monopole antenna has more than 25% antenna size reduction to obtain compact operation, which is more suitable for embedding into the USB dongle.…”

Section: Resultsmentioning

confidence: 99%

“…The related monopole antenna (MA) designs for WiMAX applications have been presented by using dual U-shaped MA [1], inverted L-shaped MA [2], rhomb shaped MA with slits [3] or modified Minkowski fractal geometry [4], inverted-F antenna [5], MA with branch slits [6], MA with rectangular horizontal strips and trapezoidal ground plane [7], mirrored-L MA [8], asymmetric rectangular MA with additional strips [9], rectangular MA with a circular disc [10], MA loaded with four different grooves [11], MA using branch strips [12], pentagonal MA with two thin bent slots [13], MA with an etched ∩-shaped slot and a parasitic ring resonator [14], MA with two semi-circle strips [15], T-shaped MA with a trapezoidal ground plane [16], MA with C-shaped and Sshaped meander strips [17] or with C-shaped and L-shaped monopole strips [18] and rectangular MA with parasitic outside ring [19]. However, there is the disadvantage of being larger antenna size for these above MAs [1-7, 9, 10, 14-17, 19] or complex antenna structure [8,[11][12][13]18].…”

Section: Introductionmentioning

confidence: 99%

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Planar Compact Multi-Band C-Shape Monopole Antenna With Inverted L-Shape Parasitic Strip for Wimax Applications

Cai²

2011

PIER C

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Abstract-A novel compact multi-band design of planar C-shape monopole antenna with inverted L-shape parasitic strip is proposed for IEEE 802.16 m WiMAX system.The obtained impedance bandwidth across the 2.6/3.5/5.5 GHz operating bands can reach about 240/570/4470 MHz, respectively. Only with the antenna size of 15 × 30 × 0.8 mm 3 , the proposed monopole antenna has the compact operation with more than 25% antenna size reduction. The measured peak gains and radiation efficiencies are about 1.6/1.9/2.9 dBi and 91/96/94% for the 2.6/3.5/5.5 GHz operating band, respectively, with nearly omni-directional pattern in the XY -plane.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Planar Compact Multi-Band C-Shape Monopole Antenna With Inverted L-Shape Parasitic Strip for Wimax Applications

Cai²

2011

PIER C

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“…In the field of multiband wireless communications, the development of multiband sub-components (e.g., amplifiers, filters, switches and antennas) are highly desired, and they were developed to support several RF front-end systems [5][6][7][8]. Meanwhile, Double Pole Double Throw (DPDT) switch (which is a part of RF switches) is ordinarily used in RF front-end system to perform Time Division Duplex (TDD) switching between up-link (Transmitter mode) and down-link (Receiver mode) [9].…”

Section: Introductionmentioning

confidence: 99%

Fixed and Selectable Multiband Isolation of Double Pole Double Throw Switch Using Transmission Line Stub Resonators for Wimax and Lte

Shairi¹,

Zakaria²

2017

PIER B

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Abstract-A novel selectable multiband isolation of Double Pole Double Throw (DPDT) switch with switchable transmission line stub resonators has been proposed for applications of WiMAX and LTE in 2.3 and 3.5 GHz bands. In this paper, two DPDT switch designs are proposed; the first design is a fixed DPDT switch, and the second is a selectable DPDT switch. The second design allows selecting only one band and unselecting the other or selecting both of them. However, the first design does not allow so. The transmission line stub resonator used in this design is an open stub resonator with quarter wave of the electrical length. By using a simple mathematical model, the theory of the transmission line stub resonator was discussed where it can be cascaded and resonated at center frequencies of 2.3 and 3.5 GHz. Moreover, the cascaded transmission line stub resonators can be reconfigured between allpass and bandstop responses using discrete PIN diodes. The key advantage of the proposed DPDT with switchable transmission line stub resonators is a multiband high isolation with minimum number of PIN diodes. Therefore, the simulated and measured results showed less than 3 dB of insertion loss, greater than 10 dB of return loss and higher than 30 dB of multiband isolation in 2.3 and 3.5 GHz bands.

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“…Among these structures, multiband antennas for USB dongles are of particular interest because they are portable and enable the easy exchange of information based on a simple plug and play interface. Accordingly, several triple band antennas for USB dongle applications have been studied [1]～ [4]. In [1] and [2], the triple band is formed by a coupling between a monopole antenna and a parasitic resonator positioned on the bottom of the substrate.…”

Section: ⅰ Introductionmentioning

confidence: 99%

“…Accordingly, several triple band antennas for USB dongle applications have been studied [1]～ [4]. In [1] and [2], the triple band is formed by a coupling between a monopole antenna and a parasitic resonator positioned on the bottom of the substrate. In [3], in order to cover the 2.4 GHz band, an inverted-F antenna is used; its ground uses two slots, one for the 3.5 GHz band and the other for the 5.5 GHz band.…”

Section: ⅰ Introductionmentioning

confidence: 99%

A Compact Triple Band Antenna for a Wireless USB Dongle

Lee¹,

Sung²

2012

Journal of electromagnetic engineering and science

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A compact monopole antenna possessing triple resonance (f1, f2, f3) characteristics for (USB) dongle applications is presented. The resonance characteristic f1 is determined by the overall length of the antenna. The monopole antenna acts as the main radiator for f3 as well as the coupling feeding structure for the parasitic resonators in f1, f2. The resonance characteristic f2 is achieved by a combination of the capacitance formed by the coupling between the top and bottom parasitic substrate resonators and the inductance generated by a via bridging the two parasitic resonators.Key words: Monopole Antenna, (USB) Dongle Application. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/ by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Ⅰ. IntroductionBecause of the rapid development of wireless communication technology, recent research has focused on compact multiband antennas. Among these structures, multiband antennas for USB dongles are of particular interest because they are portable and enable the easy exchange of information based on a simple plug and play interface. Accordingly, several triple band antennas for USB dongle applications have been studied [1]～[4]. In [1] and [2], the triple band is formed by a coupling between a monopole antenna and a parasitic resonator positioned on the bottom of the substrate. In [3], in order to cover the 2.4 GHz band, an inverted-F antenna is used; its ground uses two slots, one for the 3.5 GHz band and the other for the 5.5 GHz band. In [4], a structure that has various current paths obtains different resonances through two strips added to a rectangular radiating element fed asymmetrically by a trapezoidal ground plane. However, the size of these structures is not suitable for wireless USB dongle applications. This paper presents a triple band monopole antenna for wireless USB dongle applications. The authors have previously presented a dual-band antenna resonating at 2.4/5.2/5.8 GHz for wireless USB dongle applications [5]. The design of the proposed antenna is based on the structure outlined in [5]. A parasitic resonator in the bottom of the substrate is added to the proposed antenna and is connected to the top parasitic resonator by a via, which enables the 3.5 GHz band for WiMAX service to be added to our previous dual-band (f1, f3) antenna. In addition, because the top parasitic resonator is folded into a P-shape, the size of the proposed antenna is reduced by 50 % compared to the monopole antenna found in [5]. Ⅱ. Antenna GeometryAs Fig. 1(a) shows, the proposed antenna is composed of a monopole antenna and a parasitic radiator. The monopole is bent down to the substrate with the aim of reducing the space occupied by the antenna and effectively controlling the coupling to the parasitic radiator. In addition, the top parasitic resonator is folded into a P-shape...

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Planar multi-band monopole antenna with L-shaped parasitic strip for WiMAX application

Cited by 54 publications

References 7 publications

Planar Compact Multi-Band C-Shape Monopole Antenna With Inverted L-Shape Parasitic Strip for Wimax Applications

Planar Compact Multi-Band C-Shape Monopole Antenna With Inverted L-Shape Parasitic Strip for Wimax Applications

Fixed and Selectable Multiband Isolation of Double Pole Double Throw Switch Using Transmission Line Stub Resonators for Wimax and Lte

A Compact Triple Band Antenna for a Wireless USB Dongle

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