Dual Band-Notched Uwb Antenna Based on Spiral Electromagnetic-Bandgap Structure

Xu, Feng; Zhengxin, Wang; Xu, Chen; Wang, and Xin-An

doi:10.2528/pierb12021607

Cited by 46 publications

(34 citation statements)

References 33 publications

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“…However, most of these antennas have only one notch band around WLAN band. Moreover, some antennas occupy the entire 5-6 GHz frequency band which is much wider than needed (200 MHz for the lower WLAN band, 100 MHz for the upper WLAN band) [27].…”

Section: Introductionmentioning

confidence: 99%

A Compact Quad Band-Notched Uwb Monopole Antenna Loaded One Lateral L-Shaped Slot

Wu¹,

Feng²,

Shi³

et al. 2013

PIER

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Abstract-A novel compact microstrip-fed planar monopole antenna with quad-notched bands is presented. The proposed antenna is based on one rectangular-stepped-patch. To achieve the higher resonance over the 12 GHz, one lateral L-shaped structure is embedded in the ground. By inserting four U-shaped slots in the radiation patch, quad band-notched properties in the WiMAX (3.3-3.6 GHz), INSAT (4.5-4.8 GHz), lower WLAN (5.15-5.35 GHz) and higher WLAN (5.725-5.825 GHz) are obtained. Experimental results indicate that the designed UWB antenna can obtain broadband matched impedance values, good frequency selectivity over the notched bands, relatively flat group delay and nearly omni-directional transmission characteristics across the UWB frequencies.More importantly, the quad-notched bands can be reconfigurable by shorting the corresponding U-shaped slots.

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Section: Introductionmentioning

confidence: 99%

A Compact Quad Band-Notched Uwb Monopole Antenna Loaded One Lateral L-Shaped Slot

Wu¹,

Feng²,

Shi³

et al. 2013

PIER

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“…Gain of an antenna can be kept constant by using higher permittivity substrate in comparison to low permittivity substrate and by using a superstrate layer of array of patches (like EBG structures) [17]. EBG is also used to get notched characteristic in ultra wideband antenna [18,19]. Dual band EBG is used to get high gain and high radiation efficiency over a wider band [20].…”

Section: Introductionmentioning

confidence: 99%

An Uwb Fractal Antenna With Defected Ground Structure and Swastika Shape Electromagnetic Band Gap

Kushwaha¹,

Kumar²

2013

PIER B

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Abstract-In this paper, an ultra wideband antenna employing a defected ground structure is presented. The radiating element is a circular patch on which a fractal based geometry is inscribed in the form of slots and excited by a tapered feed-line for impedance matching. The antenna has an impedance bandwidth of 8.2 GHz (117% at centre frequency of 7 GHz) and a peak gain around 6 dB. To improve the impedance bandwidth and gain, a Swastika shape Electromagnetic band gap (EBG) structure is proposed. The unit cell of the proposed EBG has a compact size of 3 mm×3 mm and is obtained by introducing discontinuities in the outer ring of the Cross-Hair type EBG. The stop band (−20 dB) achieved with this EBG is 3.6 GHz (7.5 GHz-11.1 GHz) which is 1.6 GHz more than that achieved by a standard mushroomtype EBG of the same size and same number of elements. After application of the proposed EBG, there is an improvement of 12% in the impedance bandwidth while the peak gain increases by about 2-3 dB. The radiation of the antenna shows a dumb-bell shaped pattern in the E-plane and Omni-directional pattern in the H-plane. All the measured results are in good agreement with simulated results.

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“…Among the different planar EBG configurations such as mushroom shape, fork-like shape, spiral shape etc. [21,29,30], the uni-planar types are the most attractive and suitable for completely planar RF and microwave systems [31]. The uni-planar EBG structures has drawn great attention from the researchers due to their design and fabrication easiness and exclusion of the grounding vias or platedthrough-holes [18].…”

Section: Introductionmentioning

confidence: 99%

Compact Ebg Structure for Alleviating Mutual Coupling Between Patch Antenna Array Elements

Islam¹,

Alam²

2013

PIER

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Abstract-The periodic structure like electromagnetic band gap (EBG) is a hot research topic in the academia and RF-microwave industry due to their extraordinary surface wave suppression property. This study involved in designing a compact uni-planar type EBG structure for a 2.4 GHz resonant frequency band. Double folded bend metallic connecting lines are successfully utilized to realize a low frequency structure while a size reduction of 61% is achieved compared to the theoretically calculated size. From the transmission response, the surface wave band gap (SWBG) is found to be 1.2 GHz (1.91-3.11 GHz) whereas the artificial magnetic conductor (AMC) characteristic is observed at 3.3 GHz. The FEM based EM simulator HFSS is used to characterize the EBG structure. The SWBG property is utilized for alleviation of mutual coupling between elements of a microstrip antenna array. A 2 × 5 EBG lattice is inserted between the E-plane coupled array which reduced the coupling level by 17 dB without any adverse effect on the radiation performances.

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Dual Band-Notched Uwb Antenna Based on Spiral Electromagnetic-Bandgap Structure

Cited by 46 publications

References 33 publications

A Compact Quad Band-Notched Uwb Monopole Antenna Loaded One Lateral L-Shaped Slot

A Compact Quad Band-Notched Uwb Monopole Antenna Loaded One Lateral L-Shaped Slot

An Uwb Fractal Antenna With Defected Ground Structure and Swastika Shape Electromagnetic Band Gap

Compact Ebg Structure for Alleviating Mutual Coupling Between Patch Antenna Array Elements

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