A Low-Profile Wideband PIFA Based on Radiation of Multiresonant Modes

Jian, Rongling; Chen, Yueyun; Chen, Taohua

doi:10.1109/lawp.2020.2976670

Cited by 16 publications

(9 citation statements)

References 8 publications

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“…Thus to achieve the benefits like high data rate transmission, improved channel capacity, larger bandwidth, reduced fading effect, and improved energy efficiency the MIMO technology is amalgamated with SWB antenna. Recently several wideband MIMO/diversity antennas have been VOLUME 4, 2016 investigated by contributors from academia and industry [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

“…However, the obtained isolation of the antenna is less than 17 dB and has high cross-polarization resulting in high Electromagnetic cross-talk. A wideband planar inverted-F antenna is proposed for wireless local area networks and the Internet of Vehicles applications presented in [16], where the bandwidth of the antenna ranges from 5 to 7 GHz is heightened by combining three resonant modes. However, the simulated radiation efficiency is below 55 percent at 6 GHz, resulting in a dissipation of input power in free space.…”

Section: Introductionmentioning

confidence: 99%

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A Modified SWB Hexagonal Fractal Spatial Diversity Antenna With High Isolation Using Meander Line Approach

Chaudhary

Manohar

2022

IEEE Access

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This manuscript introduces a novel miniaturized super wideband (SWB) hexagonal fractal spatial diversity 2-element multiple-input-multiple-output (MIMO) antenna for broadband applications, as a compact wideband antenna is required for military radio and space communication devices. The designed antenna includes two hexagonal (1 st modified Koch iteration) Koch fractal radiators with two linear tapered feedlines (TLTF) and a step tapered slotted ground plane (STSGP) that provides the broad impedance characteristic with miniaturized size in the operating band of 1.78-30 GHz. Moreover, the STSGP is also accountable for enabling the isolation (S 12/21 ) better than 10 dB. To further meet the isolation higher than 22 dB, a meander line is protruded from the ground plane while maintaining a 6 mm edge-to-edge distance between two antenna elements. Typically, the MIMO antenna with high isolation is beneficial for highspeed data transmission. The experimental outcomes represent that the proposed MIMO antenna is with the advantages of reasonably good diversity gain (nearly 10 dB), stable radiation patterns, high peak gain (almost 6.6 dBi), and moderate radiation efficiency (around 85%) across -10 dB impedance bandwidth. The total active reflection coefficient (TARC) and envelop correlation coefficient (ECC) are less than -25 dB and 0.1 respectively. Due to all these attributes, the proposed 2-element MIMO antenna array can be a potential candidate for military radio, spectrum sensing for cognitive radio, and space communication applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Modified SWB Hexagonal Fractal Spatial Diversity Antenna With High Isolation Using Meander Line Approach

Chaudhary

Manohar

2022

IEEE Access

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Section: Introductionmentioning

confidence: 99%

“…to review the antennas applicable to the earbuds [7]- [18]. There are methods to Planar Inverted-F Antenna (PIFA) with slot [7], [8], slot antenna with Inverted-F Antenna (IFA), dipole, and monopole [9]- [11], appropriate design cases of feeder and slot antenna [12]- [15], and how to make additional resonant modes between the resonant modes of the loop antenna by adding a capacitance factor in the middle of the loop antenna in series [16]- [18]. Although the previously reported methods have differences in the limited ground size of the earbuds and antenna positions, it is shown that a wideband design is possible by designing a basic antenna and creating additional operation modes.…”

Section: Introductionmentioning

confidence: 99%

Compact Wideband Loop Antenna for Earbuds

et al. 2022

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This paper presents the compact wideband loop antenna with a small size of 7.05mm's radius covering ultra-wideband above 6 GHz, Wi-Fi, and Bluetooth bands for earbuds. The wide bandwidth of the proposed compact loop antenna is obtained with the antenna structure consisting of the loop antenna and the capacitive loading pin inserted in the middle of the loop antenna. The loop antenna with the capacitive loading pin supports multi-resonant modes. A wider bandwidth can be obtained by adjusting the position of the capacitive loading pin. The half-wavelength resonant frequency of the basic loop can easily be tuned through the physical capacitance between the capacitive loading pin and loop antenna. Additionally, the impedance loop is considered for the impedance matching of the compact wideband loop antenna. The simulated and measured results are included to evaluate the performance of the proposed compact wideband loop antenna. Consequently, we obtained that the simulation and measurements results are consistent.INDEX TERMS Earbuds, hearing instruments, wearable device, ultra-wideband, loop antenna. YOUNG JOONG YOON (Senior Member, IEEE) received the B.S. and M.

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“…A multi-band PIFA usually consists of at least three meandering stubs impacting the reflection coefficient in dual bands [21] [22]. The proposed miniaturized PIFA was printed on a 0.4 mm FR4 substrate with permittivity of 4.4 and loss tangent of 0.02, which can be mounted in the leftup corner of the mock-up for vertical and horizontal folding, corresponding to the representations of Huawei's high-end vertical folding production and Samsung's horizontal folding production.…”

Section: Introductionmentioning

confidence: 99%

Key Technology of Mixed Matching Circuit for Miniaturizing Dual-Band Antenna

Zhu

Yang

et al. 2022

IEEE Access

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A mixed matching circuit for miniaturizing dual-band antenna is introduced and verified in this paper. According to the dual-band allocations on the Smith chart, two L-shaped matching circuit for miniaturization are cascaded to interpret the theory of operation. A matching circuit formula is deduced based on a bidirectional matching track from a certain position to the origin point on the Smith chart. Furthermore, a dual-band antenna is taken as an example to illustrate the performance of the novel matching approach for miniaturization. The occupation of a dual-band antenna can be reduced by a quarter at the simultaneous operational frequencies of 2.4 and 5.8 GHz. Finally, a dual-band planar inverted-F antenna (PIFA) is fabricated and measured. The experimental results have a good agreement with those in the simulator.

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A Low-Profile Wideband PIFA Based on Radiation of Multiresonant Modes

Cited by 16 publications

References 8 publications

A Modified SWB Hexagonal Fractal Spatial Diversity Antenna With High Isolation Using Meander Line Approach

A Modified SWB Hexagonal Fractal Spatial Diversity Antenna With High Isolation Using Meander Line Approach

Compact Wideband Loop Antenna for Earbuds

Key Technology of Mixed Matching Circuit for Miniaturizing Dual-Band Antenna

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