DESIGN &amp; DEVELOPMENT OF COMPACT UNIPLANAR SEMI-HEXAGONAL ACS FED MULTI-BAND ANTENNA FOR PORTABLE SYSTEM APPLICATION

In this work, a novel 4 element Multi-Input Multi-Output (MIMO) antenna is reported. The proposed antenna has a size of 50 × 50 × 1.6 mm 3 is printed on the FR-4 substrate having dielectric constant ε r = 4.4 and loss tangent (tan δ = 0.02). The four antenna elements are positioned in each corner of the PCB board in an orthogonal manner such that they can provide better isolation between antenna elements. The proposed MIMO antenna is designed to operate in frequency bands of 2.25 GHz to 2.4 GHz and 4.7 GHz to 6.3 GHz. The lower band ranges from 2.25 GHz to 2.4 GHz and covers 2.3 GHz WiBro applications while the upper band ranging from 4.7 GHz to 6.3 GHz is useful for HiperLAN and Wi-MAX applications. The proposed antenna acquires return loss less than −10 dB and isolated by more than 16 dB throughout the dual operating bands. The structure exhibits stable gain and radiation patterns. Various diversity performance metrics including envelope correlation coefficient (ECC), diversity gain (DG), and mean effective gain (MEG) are evaluated and are within acceptable limits. Full wave simulation results in terms of impedance and radiation characteristics are presented to evaluate the proposed antenna performance in an installed environment.

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“…The fundamental element of the proposed Hook [36] shaped ACS fed MIMO antenna structure is illustrated in Fig. 1.…”

Section: Unit Elementmentioning

confidence: 99%

A Compact Four-Port High Isolation Hook Shaped Acs Fed Mimo Antenna for Dual Frequency Band Applications

Naidu¹,

Maheshbabu²,

Akkapanthula³

et al. 2021

PIER C

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“…For this purpose, a comprehensive state-of-the-art study was first carried out considering not only planar antennas covering both the 2.4 GHz and UWB frequency bands [10], [11], [12], [13], [14], [15], [16], [17], [18], [19], [20], [21], [22], [23], [24], [25], [26], [27], [28], [29], [30], [31], [32], [33], [34], [35], [36], [37], [38] but also recently developed compact multiband designs [39], [40], [41], [42], [43] since the intended notch band in the proposed design forms a triband 2.4/3.5/5.5-11 GHz antenna (Table 1). Note that due to the difference in antenna material and dimensions, radiating properties were excluded for a fair comparison.…”

Section: Introductionmentioning

confidence: 99%

Compact Slit-Loaded ACS-Fed Monopole Antenna for Bluetooth and UWB Systems With WLAN Band-Stop Capability

2023

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A compact asymmetric coplanar strip (ACS)-fed monopole antenna is presented, which operates within the Bluetooth and UWB frequency bands with the capability to simultaneously reject the lower WLAN interfering band. The antenna consists of an inverted right triangle patch monopole loaded by open-ended L-shaped slits not only to produce the additional 2.4 GHz passband to the UWB design but also to achieve stopband characteristics around 5.2 GHz. The conceptual equivalent circuit model as well as characteristic mode analyses are carried out in the design evolution process. The proposed antenna has an overall size of only 20 mm × 10 mm, having the smallest area among the so far developed designs, which can be easily integrated within any wireless gadgets. A prototype is fabricated and measured to validate the design, demonstrating the predicted behavior fairly achieved by full-wave analysis. The antenna −10 dB operating bandwidth ranges from 2.38 to 2.42 GHz and from 3.35 to 11 GHz while rejecting from 4.69 to 5.2 GHz. Unlike the unwanted stopband, where the radiation characteristics are adequately deteriorated, the proposed antenna fairly provides stable omni-directional radiation patterns in the H-plane, and has an average efficiency (gain) of 87.3% (2.6 dBi) in the desired passband. As far as the antenna transient behavior is concerned, an adequate measured (simulated) system fidelity factor of 0.7 (0.68) is achieved for the transmission of impulse-type UWB signals in the face-to-face configuration.

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“…Apart from the ISM band rectenna, multiband and wideband rectenna is also an option, but it has bulky devices and lossy performance [15][16][17][18][19][20][21]. Different antennas have been designed at 2.45 GHz in [22][23][24][25][26][27][28]. In the existing literature [29][30][31][32][33][34], the ISM band is considered for RF energy harvesting.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Rectenna at 2.42 GHZ for Wi-Fi Energy Harvesting

Pandey¹,

Shankhwar²,

Singh³

2021

PIER C

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This work proposes a design of rectenna for Wi-Fi energy harvesting application at 2.42 GHz. The proposed antenna includes a modified rectangular patch and two circular radiating elements with partial ground, and adopts a total area of 80×80 mm 2 . With the partial ground structure, the proposed antenna shows a better reflection coefficient (S 11 ) at 2.42 GHz. The proposed antenna is a modified conventional patch antenna that shows its improved suitability for Wi-Fi energy harvesting at the targeted band. For rectenna, an impedance matching circuit based on microstrip transmission lines, radial stubs, and enhanced Greinacher voltage doubler rectifier circuits are designed. The rectifier circuit occupies a total area of 25×25 mm 2 . The antenna part of the rectenna exhibits quite good S 11 < −10 dB and 3.94 dB peak gain. To validate the design experimentally, a prototype of the proposed rectenna is also fabricated. The measured result indicates that at the resonant frequency the rectenna achieves the peak efficiency of 78.53%, and the output voltage is 4.7 V at 0 dBm input power.

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DESIGN & DEVELOPMENT OF COMPACT UNIPLANAR SEMI-HEXAGONAL ACS FED MULTI-BAND ANTENNA FOR PORTABLE SYSTEM APPLICATION

Cited by 26 publications

References 21 publications

A Compact Four-Port High Isolation Hook Shaped Acs Fed Mimo Antenna for Dual Frequency Band Applications

A Compact Four-Port High Isolation Hook Shaped Acs Fed Mimo Antenna for Dual Frequency Band Applications

Compact Slit-Loaded ACS-Fed Monopole Antenna for Bluetooth and UWB Systems With WLAN Band-Stop Capability

Design and Analysis of Rectenna at 2.42 GHZ for Wi-Fi Energy Harvesting

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