A Novel Dual Ultrawideband CPW‐Fed Printed Antenna for Internet of Things (IoT) Applications

Awais, Qasim; Chattha, Hassan Tariq; Jamil, Mohsin; Yang, Jianzhong; Tahir, Farooq A.; Rehman, Masood Ur

doi:10.1155/2018/2179571

Cited by 33 publications

(16 citation statements)

References 31 publications

(56 reference statements)

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“…9 shows that by subtracting two circular apertures from the ground plane, H-plane radiation pattern of antenna (e) is more omnidirectional and in wider frequency range than antenna (d). Also, bandwidth of the modified antenna is much wider than that mentioned and other antennas in references [3][4][5][6][7][8][9]. Furthermore, the antenna has a variable band-notched filtering feature.…”

Section: Radiation Patternsmentioning

confidence: 97%

“…In 2002, Federal Communications Commission (FCC) assigned frequency band 3.1-10.6 GHz for ultra-wideband (UWB) systems [1]. Some UWB systems and their applications have been introduced in references like [2][3][4][5][6][7]. Also, on July 14, 2016, the US Federal Communications Commission (FCC) adopted new rules for wireless broadband operations above 24 GHz, making the U.S. the first country to make this spectrum available for next generation wireless services.…”

Section: Introductionmentioning

confidence: 99%

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A Small Cost-Effective Super Ultra-Wideband Microstrip Antenna With Variable Band-Notch Filtering and Improved Radiation Pattern With 5g/Iot Applications

Oskouei¹,

Dastkhosh²,

Mirtaheri³

et al. 2019

PIER M

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In this work, a new design of small microstrip antenna with variable band-notched filtering characteristic for super ultra-wideband (UWB) applications including 5G/IoT networks is presented. In the proposed structure by creating steps with optimized appropriate sizes and angles in the lower edges of the quasi-square patch antenna and by a new technique of modifying the ground plane, more efficient radiation patterns and characteristic impedance are achieved. Moreover, the omnidirectional low cross-polarized H-plane radiation patterns are obtained in frequency band of 3-11 GHz. Also, its radiation patterns are improved between 11 and 14.5 GHz and have better performance especially with tuning capacitors between 14.5 and 20 GHz. In addition, its frequency bandwidth with VSWR < 2 is from 3 GHz to 50 GHz which covers 5G networks and both ultra-wideband (UWB) and super wideband (SWB) communications. A rectangular slot on the patch is used to create an integrated band-notch filter in the structure to avoid interference with other wireless systems like wireless local area networks (WLANs), and this specification can be activated or deactivated by a PIN diode. In addition, the center frequency of the filter can be tuned by just a varactor diode or a variable capacitor and/or by changing the position of the capacitors in frequency range of about 3.5-6 GHz, which rejects interference of all WLANs and even their lower and upper bands, and nulls in the radiation patterns can be changed especially in upper bands as well. The final structure simulation results are in good agreement with measurement ones.

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Section: Radiation Patternsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

A Small Cost-Effective Super Ultra-Wideband Microstrip Antenna With Variable Band-Notch Filtering and Improved Radiation Pattern With 5g/Iot Applications

Oskouei¹,

Dastkhosh²,

Mirtaheri³

et al. 2019

PIER M

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“…The following empirical formula is used to calculate the total length L of slots in antenna patches: where c is the speed of the light in free space, f notch the center frequency of the notch band needed, ε eff the effective dielectric constant of the substrate [16][17][18][19], and L the length of the CSRR ring gap. The radius of the ring gap is R = L slot /2π.…”

Section: Design Of the Triple Band-notched Uwb Antennamentioning

confidence: 99%

A Novel Triple Band-Notched Uwb Printed Monopole Antenna

Lv¹,

Zhang²,

Hou³

2019

PIER M

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A novel ultra-wideband (UWB) printed monopole antenna with triple band-notched characteristics is proposed in this paper. The antenna bandwidth is extended by grooving on the connecting floor and increasing the impedance transformation line, with antenna bandwidth of 3.0∼11 GHz and relative bandwidth of 114%. The overall antenna size is 35 × 30 mm 2 . The complementary split-ring resonators (CSRRs) are loaded on the UWB antenna patch with microstrip wire feed. A symmetric J gap is loaded on the bottom plate, and the spiral gap is loaded on the feeder. The triple band-notched characteristics at 3.22∼3.97 GHz, 4.94∼5.84 GHz, and 7.25∼7.86 GHz bands are realized. The gain of the designed antenna in the notch frequency segment can be reduced rapidly to −4 dbi, while the gain of other frequency bands is above 2 dBi. Simulated and measured results show that the antenna has stable gain and good radiation characteristics in the UWB frequency range.

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“…To acquire good communication, the antennas connecting to IoT are needed to be small, cost-effective, energy efficient to operate in the different bands for WLAN (IEEE 802.11 a/b/g/n), GSM (800 MHz, 850 MHz, and 1.9 GHz), Zigbee (IEEE 802.15.4), LTE, WiMAX (IEEE 802.16), etc. [2]. Reconfigurability among such applications is desirable in IoT based communication, which can be achieved through frequency reconfigurable antennas.…”

Section: Introductionmentioning

confidence: 99%

A Novel Reconfigurable Bandpass Filtering Antenna for Iot Communication Applications

Allam¹,

Madhav²,

Anilkumar³

et al. 2019

PIER C

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This paper presents a novel reconfigurable filtering antenna with three tunable states used for IoT applications. The frequency reconfigurability is achieved using the combination of a hairpin filter and an open loop filter in the structure with the switching of p-in diodes. The open-loop filter structure provides two narrow band states at 2.4 GHz and 7.8 GHz, and the hairpin filter provides a single narrow band state at 10.4 GHz. The frequency reconfiguration is obtained without compromising the compact size of the designed circuit along with the targeted frequency bands at lower WLAN (2.47 GHz), WiMAX (3.42 GHz), INSAT C-band (7.18 GHz), fixed/mobile satellite service in X-band (8.4 GHz), direct broadcast service in Ku-band (12.14 GHz) applications. The prototype is constructed on an FR4 substrate and tested for validation in an anechoic chamber. The designed antenna provides excellent radiation characteristics and considerable gain at resonant frequencies. The proposed reconfigurable antenna is also tested using the CDAC Cmote device in the real-time environment and found more suitable for the IoT based communication applications.

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A Novel Dual Ultrawideband CPW‐Fed Printed Antenna for Internet of Things (IoT) Applications

Cited by 33 publications

References 31 publications

A Small Cost-Effective Super Ultra-Wideband Microstrip Antenna With Variable Band-Notch Filtering and Improved Radiation Pattern With 5g/Iot Applications

A Small Cost-Effective Super Ultra-Wideband Microstrip Antenna With Variable Band-Notch Filtering and Improved Radiation Pattern With 5g/Iot Applications

A Novel Triple Band-Notched Uwb Printed Monopole Antenna

A Novel Reconfigurable Bandpass Filtering Antenna for Iot Communication Applications

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