Compact planar UWB MIMO antenna with on‐demand WLAN rejection

Khan, Muhammad Saeed; Capobianco, Antonio-Daniele; Naqvi, A.; Shafique, Muhammad Farhan; Ijaz, Bilal; Braaten, Benjamin D.

doi:10.1049/el.2015.1056

Cited by 57 publications

(31 citation statements)

References 5 publications

(13 reference statements)

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“…The figure shows that the antenna has an acceptable realized gain and high efficiency over the UWB frequency band, with the exception of a strong notch at the resonance frequency of the S-SRR. A comparison between the proposed antenna with several UWB antennas in [5]- [10], [12] is presented in Table II. The comparison highlights some features of the proposed method: 1) In terms of physical dimensions, the proposed antenna is a planar structure, that is slightly larger than [8], [9] (among the tunable antennas) but smaller than those in [5]- [7].…”

Section: B Uwb Antennas With Tunable Notch To Reject the Interferencmentioning

confidence: 99%

“…To address this demand different reconfigurable and/or tunable antennas based on various techniques have been proposed. For instance, slot resonators and open-loop resonators loaded with PIN or varactor diodes have been used to achieve UWB antennas with a tunable notch band [5]- [10]. Alternatively, to achieve more compact reconfigurable structures with simpler biasing circuits RF-MEMS devices were integrated with different antenna structures to achieve antennas with switchable operating frequency or UWB antennas with on-demand WLAN rejection [11], [12].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reconfigurable and Tunable S-Shaped Split-Ring Resonators and Application in Band-Notched UWB Antennas

Horestani

Shaterian

Naqui

et al. 2016

IEEE Trans. Antennas Propagat.

137

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This paper proposes a compact reconfigurable (bandstop/bandpass) and frequency-tunable structure based on S-shaped split ring resonators (S-SRRs). It is known that an S-SRR coupled to a coplanar waveguide (CPW) provides a stopband in the transmission characteristic of the line. It is shown here that this behaviour of the S-SRR can be switched between fundamental resonance and second harmonic response by introduction of a PIN diode in the center segment of the S-SRR. Alternatively, if the S-SRR is loaded with a varactor diode instead of a switch, the frequency of the stopband can be continuously tuned from the S-SRRs fundamental resonance frequency to its second harmonic. Furthermore, it is shown that if a pair of shunt PIN diodes are introduced across the slots of the host CPW, the structure can be reconfigured from a bandstop to a bandpass structure. Thus, the proposed resonator structure can be used as the building block of reconfigurable (bandstop/bandpass) filters with tunable operating frequency. Finally, in order to demonstrate a practical application of the proposed structure, an ultrawideband antenna with a tunable band-notch is designed and experimentally validated.Index Terms-Reconfigurable antennas, S-shaped split ring resonator (S-SRR), ultrawideband antenna.

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Section: B Uwb Antennas With Tunable Notch To Reject the Interferencmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reconfigurable and Tunable S-Shaped Split-Ring Resonators and Application in Band-Notched UWB Antennas

Horestani

Shaterian

Naqui

et al. 2016

IEEE Trans. Antennas Propagat.

137

View full text Add to dashboard Cite

show abstract

“…Among these design methods, one of them is to apply a stepped structure, such as gradient or cambered shapes to obtain the UWB antenna [14]. These UWB-MIMO antennas with stepped slots on the ground have already been presented [15][16][17][18]. However, there is interference between the UWB and conventional narrow-band systems.…”

Section: Uwb-mimo Antennas Designmentioning

confidence: 99%

Very Compact 5.5 GHZ Band-Notched Uwb-Mimo Antennas With High Isolation

Liu¹,

Xi-liang²,

Zhang³

et al. 2017

PIER C

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Abstract-Two different types of band-notch UWB-MIMO antennas are proposed in this paper. The filtering effect can be achieved by integrating slot resonators to a UWB antenna. Both of the proposed antennas have very compact size and are smaller than most of the other band-notch UWB-MIMO antennas. The ultra-wideband is achieved by etching stepped slots on the ground. The band-notch characteristic can greatly reduce the potential interference between the UWB and WIMAX/WLAN system. Our proposed antennas can also possess a wide bandwidth from 3 GHz to 11 GHz with |S 11 | < −10 dB. Some effective measures have been taken and illustrated to reduce the isolation. Measurements demonstrate that the mutual coupling between the antenna elements is good enough for a MIMO system. Their stable radiation patterns are simulated, designed and measured successfully. The good performance and compact size make the antennas good candidates for UWB applications.

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“…In the past, different methods have been employed to achieve multiple functionalities of a single patch. Depending on the system requirement, the reconfigurable antenna can switch between polarizations, radiation patterns, frequencies, or combination of any of these properties . Several reconfigurable techniques have been proposed since the rise of reconfigurable antenna.…”

Section: Introductionmentioning

confidence: 99%

Pattern and frequency reconfiguration of patch antenna using PIN diodes

Khan

Iftikhar

Capobianco

et al. 2017

Microw. Opt. Technol. Lett.

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In this article, an antenna with two patch elements is pattern and frequency reconfigured. One feed line is used to excite the two patch elements placed at any angle with respect to each other. The maximum rotation of each patch antenna element incorporated is 458. For the impedance matching with 50 X, both elements are fed from the corner. The radiating elements are fed simultaneously using one feed line with the help of PIN diodes. When patch 1 is excited by biasing PIN diode 1, a broad side radiation pattern in the yz plane of the patch 1 is observed. Therefore, for the rotation angle by 7.58 the pattern rotation is about 58 Similarly, biasing PIN diode 2, resulted excitation of Patch 2. It is observed that pattern reconfiguration of 308 can be achieved by biasing PIN diode 1, whereas, up to 2308 pattern reconfiguration can be achieved by exciting PIN diode 2, without compromising on the gain of the radiating elements. On the other hand, to achieve the frequency reconfiguration, two small radiating patches are added at 0.7 mm gap with the large radiating elements. PIN diodes are used between the small and large radiating elements. When diodes on the antenna elements are

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Compact planar UWB MIMO antenna with on‐demand WLAN rejection

Cited by 57 publications

References 5 publications

Reconfigurable and Tunable S-Shaped Split-Ring Resonators and Application in Band-Notched UWB Antennas

Reconfigurable and Tunable S-Shaped Split-Ring Resonators and Application in Band-Notched UWB Antennas

Very Compact 5.5 GHZ Band-Notched Uwb-Mimo Antennas With High Isolation

Pattern and frequency reconfiguration of patch antenna using PIN diodes

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