Very Compact Open-Slot Antenna for Wireless Communication Systems

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.

Section: Evolution Of Antennamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Purohit¹,

Shukla²,

Raghuvanshi³

2019

“…The slot can be truncated on patch and ground plane which relocate the position of the resonating modes. Basically, slot changes the phase velocity (v p = 1/ √ LC) of the modes (T M 10 , T M 01 , T M 12 and T M 20 ), and it also changes the values of inductance (L) and capacitance (C) [6,7]. The shape and location of the slot, parasitic element, and tuning elements decide the fractional bandwidth, tuning of resonating frequency and overlapping of resonating modes.…”

Section: Introductionmentioning

confidence: 99%

A Study of Hybrid Wide Slot Antenna With Hybrid Parasitic Element for Wideband Applications

Kumar¹,

Shukla²,

Somkuwar³

et al. 2019

In this communication, a hybrid shaped wide slot antenna with hybrid parasitic element has been investigated which is fabricated on an FR-4 substrate (tan(δ) = 0.02, ε r = 4.3). The mutual coupling (between the slot and tuning stub), tuning of resonating modes and bandwidth of the antenna are adjusted by changing the dimension of parasitic element and tuning stub. The measured fractional bandwidth of the proposed antenna is 146.82% for S 11 < −10 dB which covers the frequency span from 0.92 to 6 GHz. This antenna exhibits resonances at 1.094, 1.56, 2.073, 2.67 and 4.02 GHz. Surface current distribution has been investigated, and series of equations are deduced for resonating frequencies. Radiation characteristic exhibits an eight-shaped pattern at fundamental mode frequency whereas at frequencies 2.85 and 3.91 GHz a distorted pattern has been observed. For understanding the behavior of the antenna, structural parameters are varied in specific ranges.

“…Researchers studied various methods to achieve ultra-wideband operations. Some such attempts are slots in the radiating elements, or ground plane modifications as presented in [3]. In [4], an irregular pentagon planar monopole antenna was presented with the size of 44 mm × 30 mm × 1.5 mm.…”

Section: Introductionmentioning

confidence: 99%

Dual-Three Stepped Trident Ultra-Wideband Planar Monopole Antenna

Gorla¹,

Harackiewicz²

2016

Self Cite

This paper presents a novel, dual, three-stepped-trident, planar, monopole antenna for ultra-wideband applications. The planar trident type antenna is designed, simulated, and fabricated. Its impedance bandwidth, radiation pattern and gain performances were measured. This antenna operates in the ultra-wideband from 3.0 GHz to 12.15 GHz. The maximum gain of this antenna design is 5.5 dBi. Measurements confirm the simulated results over the frequency of operation.