Wideband Omnidirectional Slotted Patch Antenna With Filtering Response

Wu, Tian Li; Pan, Yong; Hu, Pengfei

doi:10.1109/access.2017.2768067

Cited by 30 publications

(15 citation statements)

References 14 publications

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“…Different configurations of filtering antennas have been reported in [7][8][9][10][11][12][13][14][15][16][17]. One of the classical methods for designing filtenna is to follow the filter synthesis approach [7].…”

Section: Introductionmentioning

confidence: 99%

Compact UWB‐to‐C band reconfigurable filtenna based on elliptical monopole antenna integrated with bandpass filter for cognitive radio systems

Shome

Khan

Koul

et al. 2020

IET Microwaves, Antennas & Propagation

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In this study, a compact configuration of frequency reconfigurable filtenna, designed by integrating a bandpass filter and with a monopole radiator, is demonstrated for achieving high‐frequency selectivity along with compact size. The proposed filtenna can be efficiently tuned between ultra‐wideband (UWB) and C‐band states of operation. A bandpass filter, based on rectangular stepped impedance stub loaded multiple‐mode resonator (MMR), is embedded to an elliptical monopole radiator to construct the filtenna circuit. The filtenna design approach leaves out the necessity of cascading an additional 50 Ω microstrip feed line in between the antenna and filter elements which makes the system more compact. The designed filtenna occupies 3.6–10.6 GHz band in its UWB state of operation and 3.63–4.70 GHz band in its C‐band state of operation, respectively. The UWB operating state is intended for spectrum sensing application whereas the C‐band operating state can be implemented for communication in a cognitive radio environment. The shifting between two operating states is controlled by appropriately switching the PIN diodes. An average peak gain of 2 dBi is observed within the passband. The overall size of the filtenna is optimised to 1.35λ0 × 0.96λ0 × 0.04λ0 (λ0 is calculated at 6.85 GHz). For validation purpose, the filtenna prototype is fabricated and characterised. A very close agreement is achieved with the suggested configuration.

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Section: Introductionmentioning

confidence: 99%

Compact UWB‐to‐C band reconfigurable filtenna based on elliptical monopole antenna integrated with bandpass filter for cognitive radio systems

Shome

Khan

Koul

et al. 2020

IET Microwaves, Antennas & Propagation

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“…With the development of the fifth‐generation (5G) mobile and wireless communication technologies, antennas play an important role in modern wireless communication systems. As an important component of radio frequency (RF) front end, filtering antennas have attracted more and more attention in recent years …”

Section: Introductionmentioning

confidence: 99%

“…As an important component of radio frequency (RF) front end, filtering antennas have attracted more and more attention in recent years. [1][2][3][4][5][6][7][8][9][10][11][12][13] Recently, some methods of designing filtering antennas are employed. The relatively simple method is to integrate extra filtering circuits into antenna.…”

Section: Introductionmentioning

confidence: 99%

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A novel differential filtering patch antenna with high selectivity

Wang

Ran

Hu³

et al. 2019

Int J RF Microw Comput Aided Eng

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A novel differential filtering antenna with high selectivity is proposed. The antenna is mainly composed of three different‐size patches, a slot, a pair of differential feeding lines, and a line resonator. An air gap is adopted to improve the impedance bandwidth and the filtering performance. The line resonator helps to generate high common‐mode (CM) rejection. Owing to the parasitic concave and convex patches, the filtering performance and the bandwidth of the antenna are enhanced. The parasitic concave patch affects the lower band‐edge selectivity while the parasitic convex patch influences the upper band‐edge selectivity. In addition, the frequencies of two radiation nulls can be controlled independently to achieve two high sharp roll‐off rates by adjusting the lengths of the parasitic patches. Considerable impedance matching bandwidth is achieved through an aperture coupling. Finally, a prototype of the differential filtering antenna is fabricated and tested. The measured results are in good agreement with the simulated results, showing an impedance bandwidth of 9.9% and an average realized gain of 7.5 dBi. Besides, two filter zero transmissions located at 3.40 and 3.84 GHz produced two radiation nulls.

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“…Recently, same attempts have been made on the design of omnidirectional filtering antennas. Shorting pins and slots were adopted in omnidirectional patch antenna to create radiation nulls. Further in reference [], a microstrip‐to‐slotline transition structure, which was applied as the feeding network, was proposed and adopted in the planar dipole to achieve filtering response.…”

Section: Introductionmentioning

confidence: 99%

A wideband omnidirectional filtering patch antenna with high selectivity

Wang

Chen

Wang

et al. 2018

Int J RF Microw Comput Aided Eng

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A wideband omnidirectional filtering patch antenna with high selectivity is proposed in this article. The annular ring is surrounded by the hexagonal patch with inner circle, whereas a series of shorting vias are regularly distributed among them and a copper top hat is suspended right on the top of the radiator, respectively. And, omnidirectional pattern is mainly performed on account of the symmetry and center‐fed structure. In addition, broadband performance is achieved by merging three resonant modes, which include the TM01 and TM02 modes of the annular ring and the TM02 mode of the hexagonal patch with inner circle. Taking advantages of the hexagonal patch and six shorting vias in it, two radiation nulls are provided in the upper band. Besides, another radiation null is generated in the lower band by reason of the top hat and other shorting vias. As a result, an ideal quasi‐elliptic bandpass response, high selectivity, and good out‐of‐band rejection are obtained simultaneously. The proposed filtering patch antenna, with a profile of 0.056 λ 0, shows a wide impedance bandwidth of 30.2% from 2.05 to 2.78 GHz. The average gain in the passband is about 6.5 dBi, and the out‐of‐band suppression level is greater than 15 dB in the wide stopband.

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Wideband Omnidirectional Slotted Patch Antenna With Filtering Response

Cited by 30 publications

References 14 publications

Compact UWB‐to‐C band reconfigurable filtenna based on elliptical monopole antenna integrated with bandpass filter for cognitive radio systems

Compact UWB‐to‐C band reconfigurable filtenna based on elliptical monopole antenna integrated with bandpass filter for cognitive radio systems

A novel differential filtering patch antenna with high selectivity

A wideband omnidirectional filtering patch antenna with high selectivity

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