Bandwidth Enhancement of Printed E-Shaped Slot Antennas Fed by CPW and Microstrip Line

Dastranj, Aliakbar; Abiri, Habibollah

doi:10.1109/tap.2010.2041164

Cited by 126 publications

(83 citation statements)

References 20 publications

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“…The egg curved slot is excited by a 50 Ω CPW feed line. To achieve an efficient excitation and a wideband impedance matching [8,12], the central signal strip is terminated to a similar egg curved tuning stub separated by an offset feedgap distance d from the slot as shown in Fig. 1.…”

Section: Design Of Egg Curved Slot and Stubmentioning

confidence: 99%

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Printed Egg Curved Slot Antennas for Wideband Applications

Verma¹,

Kumar²

2014

PIER B

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Abstract-This paper presents a novel design of an egg curve based wide-slot antenna for various wideband applications. The proposed printed antenna consists of an egg curved slot with a similar tuning stub. The egg curve is obtained by introducing an egg shaping parameter into standard elliptic curve equation. The effect on the impedance bandwidth through the variations in antenna design parameters has been investigated and analysed in detail. To validate the theoretical design, various egg curved slot antennas were designed, fabricated and measured. Good agreement between the simulated results and the measured ones is observed. An empirical formula is also proposed to approximately determine the frequency corresponding to the lower edge of −10 dB operating bandwidth. The results demonstrate that the proposed egg curved slot antenna (ECSA) can obtain a measured bandwidth (BW) of 164.46% (1.95-20.0 GHz) for |S 11 | ≤ −10 dB. A stable realised gain of about 4.1-5.1 dBi with consistent radiation patterns are measured over more than the entire ultrawideband (UWB) bandwidth (3.1-10.6 GHz) which makes it a suitable candidate for wideband and UWB wireless system applications.

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Section: Design Of Egg Curved Slot and Stubmentioning

confidence: 99%

“…In [8], CPW-fed E-shaped feed stubs and slots with rounded corners (85 × 85 mm 2 ) are presented with a bandwidth of 2.83-18.2 GHz (more than 146%) for broadband communication systems. In [9], a U-shaped tuning stub is used with circular/elliptical slot to achieve the impedance bandwidth of 110% with gain varying from 1.9-5.1 dBi.…”

Section: Introductionmentioning

confidence: 99%

Printed Egg Curved Slot Antennas for Wideband Applications

Verma¹,

Kumar²

2014

PIER B

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“…Various coplanar waveguide (CPW) and microstrip fed antennas are designed and small ground plane are used to augment the bandwidth of the antenna. Advantages of CPW fed antenna is wider bandwidth, less dispersion loss and lower radiation leakage as compare to microstrip and probe fed technique [8][9][10]. In studies, many methods have been developed to design multiband antenna by using slot loading technique and design of notch frequency band such as cutting slots into the ground plane or into the antenna radiators [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

A Circular Disc Microstrip Antenna with Dual Notch Band for GSM/Bluetooth and Extended UWB Applications

Kumar¹,

Kumar²,

Vishwakarma³

2018

IJET

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A microstrip antenna with a circular disc design and modified ground is proposed in this paper. Circular shapes of different size have been slotted out from the radiating patch for achieving extended ultra wideband (UWB) with GSM/Bluetooth bands with maximum bandwidth of 17.7 GHz (0.88-18.6 GHz). Further, characteristic of dual notch band is achieved, when a combination of T and L-shaped slots are etched into the circular disc and ground plane respectively. Change in length of slots is controlling the notch band characteristics. The proposed antenna has rejection bandwidth of 1.3-2.2 GHz (LTE band), 3.2-3.9 GHz (WiMAX band) and 5.2-6.1 GHz (WLAN band) respectively. It covers the frequency range of 0.88-18.5 GHz with the VSWR of less than 2. Also, an equivalent parallel resonant circuit has been demonstrated for band notched frequencies of the designed antenna. The gain achieved by the proposed antenna is 6.27 dBi. This antenna has been designed, investigated and fabricated for GSM, Bluetooth, UWB, X and Ku band applications. The stable gain including H & E-plane radiation pattern with good directivity and omnidirectional behavior is achieved by the proposed antenna. Measured bandwidths are 0.5 GHz, 0.8 GHz, 1.1 GHz and 11.7 GHz respectively.

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“…Recently, wideband slot antennas [8][9][10][11][12][13][14][15] have received much attention in wireless communication system, owing to their attractive merits, such as low profile, low cost, easy fabrication, and wide impedance bandwidth. In these type of antenna design, different configurations are introduced for bandwidth enhancement, such as H-slot [8], T-slot [9], E-slot [10], wide rectangular slot with U shaped tuning stub [11], open L-slot [12], wide slot [13], multi-via holes [14], rectangular stub to the circular radiating Patch [15]. When the antenna is fed by a microstrip line, misalignment can result because etching is required on both sides of the dielectric substrate but there is no alignment error in CPW-fed slot antenna as the slot and the feed is on the same plane.…”

Section: Introductionmentioning

confidence: 99%

Bandwidth Enhancement of Microstrip Line and CPW-Fed Asymmetrical Slot Antennas

Mitra¹,

Das²,

Chaudhuri³

2012

PIER Letters

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Abstract-In this paper, a bandwidth enhancement technique of asymmetrical slot antenna with two different excitation methods is presented. One method of excitation is the microstrip line feed, and the other is the coplanar waveguide feed. The rectangular slot excited by microstrip line feed gives an impedance bandwidth of 14.76% (|S 11 | < −10 dB). When the rectangular slot is excited by a coplanar waveguide (CPW), it gives an impedance bandwidth of 26.61%. Both impedance and radiation characteristics of these antennas are studied.

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Bandwidth Enhancement of Printed E-Shaped Slot Antennas Fed by CPW and Microstrip Line

Cited by 126 publications

References 20 publications

Printed Egg Curved Slot Antennas for Wideband Applications

Printed Egg Curved Slot Antennas for Wideband Applications

A Circular Disc Microstrip Antenna with Dual Notch Band for GSM/Bluetooth and Extended UWB Applications

Bandwidth Enhancement of Microstrip Line and CPW-Fed Asymmetrical Slot Antennas

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