Compact, Frequency-Reconfigurable Filtenna With Sharply Defined Wideband and Continuously Tunable Narrowband States

Tang, Ming‐Chun; Wen, Zheng; Wang, Hao; Li, Mei; Ziolkowski, Richard W.

doi:10.1109/tap.2017.2736535

Cited by 69 publications

(34 citation statements)

References 28 publications

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“…Microfluidic controlled polypropylene tubes, inserted between the main radiators and the ground plane, have been used for the purpose of frequency reconfigurablity [3]. A pin diode has been used to vary the antenna's bandwidth from narrow to wide, while varactor diodes have been used to continuously change the resonant frequency in the narrow band [4], making it more competitive for cognitive radio applications. A PIN diode-based multiband reconfigurable printed monopole antenna for WLAN/WiMAX was presented in [5].…”

Section: Introductionmentioning

confidence: 99%

Frequency and Pattern Reconfigurable Antenna for Emerging Wireless Communication Systems

et al. 2019

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A printed and minimal size antenna having the functionality of frequency shifting as well as pattern reconfigurability is presented in this work. The antenna proposed in this work consists of three switches. Switch 1 is a lumped switch that controls the operating bands of the antenna. Switch 2 and Switch 3 controls the beam switching of the antenna. When the Switch 1 is ON, the proposed antenna operates at 3.1 GHz and 6.8 GHz, covering the 2.5-4.2 GHz and 6.2-7.4 GHz bands, respectively. When Switch 1 is OFF, the antenna operates only at 3.1 GHz covering the 2.5-4.2 GHz band. The desired beam from the antenna can be obtained by adjusting the ON and OFF states of Switches 2 and 3. Unique beams can be obtained by different combination of ON and OFF states of the Switches 2 and 3. A gain greater than 3.7 dBi is obtained for all four cases.

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Section: Introductionmentioning

confidence: 99%

Frequency and Pattern Reconfigurable Antenna for Emerging Wireless Communication Systems

et al. 2019

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“…The salient features of the proposed multi‐band reconfigurable filtering antenna are: The unique feature of the proposed work is that it is one of the fewest available reconfigurable filtering antennas in the literature whose frequency of operation extends to entire UWB and it stands out for its miniaturized size unlike Reference . The filtering antenna proposed can operate simultaneously at three different application bands simultaneously thereby making it more suitable in a cognitive environment unlike References 3‐6 and 9‐15. Reduced numbers of actuators are used unlike Reference . Discrete switching is made plausible using PIN diodes. The integration of reconfigurable filter with the UWB antenna inhibits the interference of primary user into the secondary user through harmonic suppressions, making it a suitable prospect for the class of smart antennas. The proposed antenna renders stable radiation pattern and passable gain unlike References and , respectively. …”

Section: Resultsmentioning

confidence: 99%

“…Although the antenna rejects unwanted out of band signals, there is no sharp‐edged band rejection. To overcome this issue, a compact filtering antenna with sharp out‐of‐band rejection in both the wideband and continuously tuneable narrowband states is presented . But the proposed structure has frequency agility issues.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable bow tie‐based filtering antenna for cognitive radio applications

Potti¹,

Balaji²,

Alsath³

et al. 2020

Int J RF Microw Comput Aided Eng

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This article presents the design and implementation of an 88 × 85 mm reconfigurable filtering bow‐tie antenna with four operating states. Two PIN diodes are deployed to reconfigure the transmission zeros to realize ultra‐wide band (UWB), 3.5/5.5 GHz with independent switching. This switching prevents the interference of the primary user into the secondary user thereby making the filtenna suitable for cognitive radio applications. The proposed filtenna consists of a UWB bow‐tie antenna integrated with a band‐pass filter with reconfigurable property enabled using two PIN diodes. The prototype‐filtering antenna is fabricated and the simulated results are validated using measurements. The presented results show that the antenna exhibits good impedance and radiation characteristics.

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“…Four distinct methods are there to achieve Frequency Reconfiguration in antennas. First method to achieve frequency reconfiguration is Electrical in which antennas are reconfigured using Radio Frequency-Microelectromechanical systems (RF-MEMS) [9][10][11][12][13][14], PIN diodes [15][16][17][18], or varactors [19][20][21]. Second method is Optical where such antennas use photoconductive switches to achieve reconfiguration [22][23][24][25][26].…”

Section: Reconfiguration Techniques For Frequency Reconfigurable Antementioning

confidence: 99%

Frequency reconfigurable antennas for cognitive radio applications: a review

Cleetus¹,

Bala²

2019

IJECE

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<span>Wireless communication systems undergo tremendous growth these days and devices able to operate in a number of frequencybandsarehighlydemanded. Reconfiguration in antenna characteristic striggered the evolution of antennas that can workin multiple frequency, pattern<span> or polarization </span>environment.The frequency reconfigurable antennas thuse mergedarewell suited in Cognitive Radios which take part in the effective utilization of unused bands of frequencies by continuously interacting with the RF environment. Thus, Cognitive Radios enhancetheutilization of frequency spectrum and establish reliable communication. The most recent research works carried out in the arena of Frequency Reconfigurable Antennas for Cognitive Radio applications are reviewed and summed up in this paper to present the attributes and categorization. Four techniques adopted to attain frequency reconfiguration are extensively compared in this paper to find the advantages and constraints of each methodology. The applications of the works reviewed here are not only limited to Cognitive radios, but extended to a number of wireless communication services like, WLAN, WiMAX, etc</span>

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Compact, Frequency-Reconfigurable Filtenna With Sharply Defined Wideband and Continuously Tunable Narrowband States

Cited by 69 publications

References 28 publications

Frequency and Pattern Reconfigurable Antenna for Emerging Wireless Communication Systems

Frequency and Pattern Reconfigurable Antenna for Emerging Wireless Communication Systems

Reconfigurable bow tie‐based filtering antenna for cognitive radio applications

Frequency reconfigurable antennas for cognitive radio applications: a review

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