Design of Open Slot Antenna for Bandwidth Enhancement With a Rectangular Stub

Chen, Bin; Jiao, Yong‐Chang; Ren, Feifei; Zhang, Li; Zhang, Fu‐Shun

doi:10.2528/pierl11062602

Cited by 8 publications

(8 citation statements)

References 14 publications

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“…By choosing a suitable angle, the bandwidth can be improved [10]. Reshaping the feed structure and radiating element are also techniques to enhance the bandwidth of an open slot antenna [11][12][13][14]. Tuning stub performs the operation of overlapping of resonating modes.…”

Section: Introductionmentioning

confidence: 99%

A Novel Design of Hybrid Open Slot Antenna With Parasitic Element for Wideband Applications

Purohit¹,

Shukla²,

Raghuvanshi³

2019

PIER C

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In this communication, a novel design of a hybrid open slot antenna is investigated and experimentally verified. The proposed structure comprises a slotted tuning stub, a proximity fed parasitic element, and slotted ground plane. Tuning and overlapping of best matching frequencies f r1 , f r2 , f r3 , f r4 , f r5 , f r6 , and f r7 are accomplished by varying the dimension of the parasitic element and elliptical slot. The experimental results reveal that this antenna covers the fractional bandwidth (BW(%) = 200 * (f h − f l)/(f h + f l)) of 139.5% from 0.98 GHz to 5.5 GHz for |S 11 | < −10 dB which is suitable for GSM 1800, WiMAX, PCS, and ITM-2000. After the analysis of current distribution, mathematical equations are developed for frequencies 1.04, 1.52, 3.06, 3.67, and 4.58 GHz. The structural analysis is also carried out for optimization and to know the electromagnetic behaviour of the antenna. Asymmetric radiation patterns are found at resonating frequencies due to open slot geometry.

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Section: Introductionmentioning

confidence: 99%

A Novel Design of Hybrid Open Slot Antenna With Parasitic Element for Wideband Applications

Purohit¹,

Shukla²,

Raghuvanshi³

2019

PIER C

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show abstract

“…The rotation of the radiating patch produces a large number of resonating modes, and by choosing the proper angle, these modes can be overlapped [17]. Some other methods are reported for enhancing the bandwidth of open slot antenna, such as integrating tuning stub [18], changing the shape of feed structure, and radiating element [19,20].…”

Section: Introductionmentioning

confidence: 99%

An Investigation of Stepped Open Slot Antenna With Circular Tuning Stub

Purohit¹,

Shukla²,

Raghuvanshi³

2019

PIER C

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In this article, a microstrip-fed stepped open slot antenna is presented which is suitable for GSM 1800, WiFi, WiMAX, PCS, and ITM-2000 applications. The proposed geometry is composed of a circle-shaped tuning stub, a feed structure, and deformed ground plane. The proper tuning of resonating modes (f r1 , f r2 , f r3 and f r4) and wideband frequency response are acquired by adjusting the dimension of stairs, tuning the stub and an elliptical slot. The experimental result demonstrates that this antenna covers the frequency range from 1.375 to 5.6 GHz with measured fractional bandwidth (BW (%) = 200 * (f h − f l)/(f h + f l)) of 121.14% for S 11 < −10 dB. This antenna also exhibits resonance at frequencies (measured) 1.625, 2.52, 2.82, 3.75, 4.67, and 5.42 GHz. After investigating the surface current distribution, the mathematical equations are deduced for simulated resonating frequencies of 1.35, 2, 3.8, and 5.22 GHz. Due to asymmetry in structure, asymmetric far-field patterns are found in E-plane with omnidirectional patterns in H-plane.

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“…The antenna can operate in the frequency range from 2.5 to 12.5 GHz, and the antenna size is only 30 mm × 35 mm. Chen et al [14] designed the circular patch into a semicircle, and the purpose of reducing the antenna size was realized. The measured results show that the antenna can obtain 139% of the relative impedance bandwidth, which can cover the frequency range from 2.57 to 14.23 GHz, while the antenna size can be reduced to 20 mm × 35 mm.…”

Section: Introductionmentioning

confidence: 99%

Design of L-Shaped Open-Slot Antenna Used in UAV Airborne Communication System

Zhang

Yang

2018

International Journal of Antennas and Propagation

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According to the communication demands of communication system used in the UAV (Unmanned Aerial Vehicle) communication system, a ladder-shaped open-slotted antenna design is presented. The impedance effects and directional radiation performance of designed antenna are improved with adopting a pair of L-shaped narrow slot and a passive resonator among the antenna structures. The measured results show that the impedance bandwidth of the antenna is about 90%, the frequency range can cover from 3 GHz to 12 GHz, and the antenna has a relative small size just as 22 mm × 24 mm. The antenna is realized through adopting improved ground structure, and its electrical length is increased simultaneously. To improve its impedance matching effect, the ladder structure is adopted in the antenna. The measured results show that the proposed design scheme is useful and effective, the antenna size can be controlled within the size of 22 mm × 24 mm and the good impedance bandwidth can also be obtained, its frequency bandwidth is from 3 GHz to 13.2 GHz, and the designed antenna has good group delay characteristics at the same time.

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Design of Open Slot Antenna for Bandwidth Enhancement With a Rectangular Stub

Cited by 8 publications

References 14 publications

A Novel Design of Hybrid Open Slot Antenna With Parasitic Element for Wideband Applications

A Novel Design of Hybrid Open Slot Antenna With Parasitic Element for Wideband Applications

An Investigation of Stepped Open Slot Antenna With Circular Tuning Stub

Design of L-Shaped Open-Slot Antenna Used in UAV Airborne Communication System

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